CN118444404A - Investigation method of solid waste landfill site - Google Patents
Investigation method of solid waste landfill site Download PDFInfo
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- CN118444404A CN118444404A CN202410459113.1A CN202410459113A CN118444404A CN 118444404 A CN118444404 A CN 118444404A CN 202410459113 A CN202410459113 A CN 202410459113A CN 118444404 A CN118444404 A CN 118444404A
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- 239000002910 solid waste Substances 0.000 title claims abstract description 267
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- 231100000419 toxicity Toxicity 0.000 claims abstract description 9
- 230000001988 toxicity Effects 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims description 50
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- 230000007059 acute toxicity Effects 0.000 claims description 6
- 231100000403 acute toxicity Toxicity 0.000 claims description 6
- 238000002386 leaching Methods 0.000 claims description 6
- 230000009257 reactivity Effects 0.000 claims description 6
- 231100000167 toxic agent Toxicity 0.000 claims description 6
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- G—PHYSICS
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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- G—PHYSICS
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/885—Radar or analogous systems specially adapted for specific applications for ground probing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
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Abstract
The invention provides a investigation method of a solid waste landfill site, and belongs to the technical field of solid waste landfill. The investigation method comprises the steps of dividing a solid waste landfill site to obtain a measuring area, a measuring line and a measuring point; judging the solid waste landfill in the measuring point, and calculating the solid waste landfill range in the measuring point when the judging result is that the solid waste landfill exists in the measuring point, so as to obtain the solid waste landfill amount; and taking the solid waste landfill range, the solid waste landfill amount and the dangerous identification result as investigation results of the solid waste landfill site. The invention solves the problem that the specific landfill condition and toxicity of the residual solid waste cannot be quickly determined by the existing investigation method of the solid waste landfill site, and can be quickly determined.
Description
Technical Field
The invention relates to the technical field of solid waste landfill, in particular to a investigation method of a solid waste landfill site.
Background
The spatial distribution of industrial solid waste dumping and landfill has great uncertainty and heterogeneity, is common and long-term, and has huge environmental risks. Therefore, the definition of the industrial solid waste range and the influence on the surrounding ecological environment are key to scientifically disposing the history left-over problems.
In order to solve the above hidden danger of solid waste, further investigation of hidden danger of solid waste is required to be carried out on the solid waste landfill to determine whether residual solid waste still exists. However, the existing investigation method of the solid waste landfill site cannot quickly determine the specific landfill condition and toxicity of the residual solid waste.
Disclosure of Invention
The invention solves the technical problems that: the existing investigation method of the solid waste landfill site cannot quickly determine the specific landfill condition and toxicity of the residual solid waste.
In order to solve the problems, the technical scheme of the invention is as follows:
a method of investigation of a solid waste landfill comprising:
Performing field exploration on the solid waste landfill, dividing the solid waste landfill based on the field exploration result to obtain a measuring area, dividing the measuring area to obtain a measuring line, and further dividing the measuring line to obtain measuring points;
Detecting a measuring line in the measuring area by a transient electromagnetic method or a density electric method, further detecting a measuring point on the measuring line with the solid waste landfill by a ground penetrating radar method when the solid waste landfill is detected on the measuring line, and defining a solid waste landfill range in the measuring point with the solid waste landfill by encryption drilling when the solid waste landfill is detected in the measuring point;
Drawing a three-dimensional graph of the solid waste landfill range through visual geological modeling software, and calculating according to the three-dimensional graph to obtain the solid waste landfill amount; finally, identifying the dangerousness of the solid waste in the solid waste landfill range to obtain a dangerousness identification result; and taking the solid waste landfill range, the solid waste landfill amount and the dangerous identification result in all the measuring points in the solid waste landfill as the investigation result of the solid waste landfill.
As one aspect of the invention, a method of in situ exploration of a solid waste landfill is: based on landfill history data and on-site survey of the solid waste landfill site, primarily judging whether the solid waste landfill site is in solid waste landfill or not; when solid waste landfill exists, further judging the landfill position and the landfill material type of the solid waste landfill according to the landfill history data of the solid waste landfill site; the landfill history data includes solid waste landfill sites and solid waste traits which were found in the solid waste landfill sites.
As one aspect of the present invention, a method of dividing a solid waste landfill based on the results of a field survey is: determining the area where the solid waste landfill exists according to landfill history data of the solid waste landfill site and the on-site survey result; taking the determined area with the solid waste landfill as a solid waste landfill area; equidistant division is carried out in the measuring area to obtain a measuring line; and finally, equally dividing the measuring lines to obtain measuring points.
As one aspect of the present invention, the method of demarcating the solid waste landfill range in the site where the solid waste landfill exists by the encryption drilling is as follows: when the solid waste landfill is detected to exist in the measuring point, encryption drilling is carried out in four directions of east, west, south and north, which are 2-4 m away from the measuring point until no landfill exists under the point of the encryption drilling, so that the solid waste landfill range in the measuring point is defined, the solid waste landfill layer is marked, and the mark information of the solid waste landfill layer is obtained.
As one aspect of the present invention, the solid waste landfill marking information includes: solid waste landfill plane distribution range information, solid waste landfill thickness information and solid waste character of vertical distribution of solid waste landfill; wherein, the solid waste character comprises color, state and smell, and the state comprises solid state and liquid state.
As one aspect of the present invention:
the method for drawing the three-dimensional map of the solid waste landfill range through the visual geological modeling software comprises the following steps: drawing a solid waste landfill three-dimensional map through visual geological modeling software based on the solid waste landfill information and the solid waste landfill marking information; the solid waste landfill information comprises longitude and latitude and ground elevation information of a solid waste landfill range;
The method for identifying the solid waste danger in the solid waste landfill range comprises the following steps: and identifying corrosiveness, reactivity, inflammability, leaching toxicity, toxic substance content and acute toxicity of the solid waste in the solid waste landfill range, and judging whether the solid waste is dangerous waste according to an identification result.
The beneficial effects of the invention are as follows:
The invention combines three geophysical detection methods, develops a comprehensive geophysical electromagnetic detection method mainly comprising a transient electromagnetic method and a ground penetrating radar and assisted by a high-density electrical method, realizes the rapid and accurate judgment of suspicion of solid waste landfill, further determines relevant information of the solid waste landfill range through encryption drilling, draws a three-dimensional diagram of the solid waste landfill range through visual geological modeling software, realizes the calculation of the solid waste landfill amount, and finally takes the calculated solid waste landfill amount and dangerous identification result as the investigation result of a solid waste landfill, thereby ensuring the investigation accuracy and the authenticity of the investigation result.
Drawings
FIG. 1 is a plot of the zone distribution of a solid waste landfill in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a DCDTEM-2S type towed high-resolution transient electromagnetic system in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of a EDGMD-1A centralized high-density electrical measurement system in accordance with an embodiment of the present invention;
FIG. 4 is a EKKO PRO multi-functional geological radar in accordance with an embodiment of the present invention;
FIG. 5 is a diagram of in situ drilling of a solid waste landfill in accordance with an embodiment of the present invention;
FIG. 6 is a rig drilling point distribution plot of a solid waste landfill in an embodiment of the present invention;
FIG. 7 is a schematic diagram of the positions of the G1 and G2 lines selected by the high density electrical method according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a survey line G1 resistivity inversion profile in an embodiment of the invention;
FIG. 9 is a schematic diagram of a survey line G2 resistivity inversion profile in an embodiment of the invention;
FIG. 10 is a cross-sectional view of a geological radar in accordance with an embodiment of the present invention;
FIG. 11 is a plan view of transient electromagnetic resultant circling anomalies in an embodiment of the present invention;
fig. 12 is a three-dimensional view of a solid waste landfill in an embodiment of the present invention.
Detailed Description
Noun interpretation
Transient electromagnetic method (TRANSIENT ELECTROMAGNETIC METHOD) is a geophysical prospecting method for detecting subsurface resistivity distributions. The resistivity information of underground rock and soil is acquired by utilizing the induction effect of the transient electromagnetic field. Transient electromagnetic methods infer the resistivity distribution of the subsurface by injecting a instantaneously changing current into the subsurface and measuring the induced magnetic field.
High density electrical Method (HIGH DENSITY ELECTRICAL Method) is a geophysical prospecting Method for measuring subsurface resistivity distribution. It infers the resistivity characteristics of the subsurface medium by placing a plurality of electrodes in the subsurface and measuring the relationship between current and voltage.
Ground penetrating radar (group PENETRATING RADAR, GPR) is a non-invasive geophysical prospecting method that uses high frequency electromagnetic waves to detect subsurface material structures and interfaces. It acquires the position, shape and properties of an underground object by transmitting high-frequency electromagnetic waves and receiving echo signals.
The operation and management of landfill sites requires strict compliance with environmental regulations and technical standards to ensure the safety and effectiveness of waste disposal. Meanwhile, solid waste landfills have various hidden dangers including address selection problems, waste leakage problems, gas discharge problems and land utilization problems.
In order to solve the above problems, this embodiment describes a method for investigating a solid waste landfill, comprising:
Performing field exploration on the solid waste landfill, dividing the solid waste landfill based on the field exploration result to obtain a measuring area, dividing the measuring area to obtain a measuring line, and further dividing the measuring line to obtain measuring points;
Detecting a measuring line in the measuring area by a transient electromagnetic method or a density electric method, further detecting a measuring point on the measuring line with the solid waste landfill by a ground penetrating radar method when the solid waste landfill is detected on the measuring line, and defining a solid waste landfill range in the measuring point with the solid waste landfill by encryption drilling when the solid waste landfill is detected in the measuring point;
Drawing a three-dimensional graph of the solid waste landfill range through visual geological modeling software, and calculating according to the three-dimensional graph to obtain the solid waste landfill amount; finally, identifying the dangerousness of the solid waste in the solid waste landfill range to obtain a dangerousness identification result; and taking the solid waste landfill range, the solid waste landfill amount and the dangerous identification result in all the measuring points in the solid waste landfill as the investigation result of the solid waste landfill.
The method for performing on-site exploration on the solid waste landfill site comprises the following steps: determining the area where the solid waste landfill exists according to landfill history data of the solid waste landfill site and the on-site survey result; taking the determined area with the solid waste landfill as a solid waste landfill area; equidistant division is carried out in the measuring area to obtain a measuring line; and finally, equally dividing the measuring lines to obtain measuring points.
In the above process, the dividing method of the measuring line and the measuring point belongs to the common means in the field. The distance between the measuring lines is usually 2 meters, and the distance between the measuring points is usually 1.5 meters.
Specifically, in this embodiment, further investigation of hidden danger of solid waste is performed in a retired chemical plant and in an immediate vicinity of a town of a county, whether residual solid waste still exists is determined, the distribution range and the landfill depth of the solid waste plane are accurately defined, and the landfill amount of the solid waste is determined.
The types of the landfill materials can be chemical waste liquid, household garbage and/or slag, and can be other types of landfill materials, and the specific types of the landfill materials are determined according to the historical landfill conditions of the solid waste landfill.
The method for dividing the solid waste landfill sites based on the results of the field exploration comprises the following steps: estimating the position and the area of the area where the solid waste landfill exists according to the landfill history data of the solid waste landfill site and the on-site survey result; based on the position and the area of the solid waste landfill area obtained by estimation, dividing the solid waste landfill area into a measuring area, dividing a measuring line in the measuring area, and finally dividing measuring points on the measuring line.
Specifically, this embodiment detects (collects landfill history data and site survey) a region of 7 sites within a retired chemical plant of a town of a county to obtain a region of 7 sites where solid waste landfills exist, and the region of 7 sites where solid waste landfills exist is referred to as the 7 site region of the solid waste landfills. The 7-position areas are an A1 area, an A2 area, an A3 area, an A4 area, an A5 area, an A6 area and an A7 area respectively, and the distribution positions of the 7-position areas are shown in figure 1; 50 sections are detected by a transient electromagnetic method, and the total number of the calculated points is 2936. Wherein: 2 experimental detection sections total 120 check points; 2761 section points are counted in total of 48 sections; and the device also comprises 55 solid waste response experiment measuring points. 2 high-density detection sections and 192 detection points are completed. Wherein, a section refers to a detection surface formed by underground detection of a line.
The geophysical exploration method comprises a transient electromagnetic method, a ground penetrating radar method and a high-density electrical method; the transient electromagnetic method or the high-density electric method is used for detecting the measuring line, and the ground penetrating radar method is used for detecting the measuring point.
In the embodiment, a detecting instrument for realizing a transient electromagnetic method is a DCDTEM-2S type towed high-resolution transient electromagnetic system, and as shown in fig. 2, the DCDTEM-2S type towed high-resolution transient electromagnetic system consists of a transient electromagnetic host, a towed transceiver coil and data processing and imaging software; the technical indexes comprise: emission current: 10A, the emission magnetic moment: 400Am 2, turn-off delay < 0.8 mus (pure resistance); receiving coil effective area: 24m 2; a/D conversion: 24 bits; the sampling rate is 2.5MHz; dynamic range is collected: 250dB; measurement mode: spot measurement and dragging; and (3) collecting: USB3.0 control and collection;
In this embodiment, the detection instrument for implementing the high-density electrical method is a high-density electrical method instrument, as shown in fig. 3, and the high-density electrical method instrument adopts EDGMD-1A centralized high-density electrical method measurement system.
In this embodiment, the detecting instrument implementing the ground penetrating radar method is a geological radar, as shown in fig. 4, and EKKO PRO multifunctional geological radars are adopted as the geological radar; EKKO PRO the multifunctional geological radar consists of a host, a transmitter, a receiver, a notebook computer, an optical cable, an antenna and the like.
The method for judging the suspicion of solid waste landfill in the measuring line/measuring point by using the geophysical detection method comprises the following steps: detecting the measuring line by a transient electromagnetic method, and judging that the solid waste landfill suspicion exists in the measuring line when the detection result is that the high resistivity is abnormal; detecting the measuring point by a ground penetrating radar method, and judging that the solid waste landfill suspicion exists at the measuring point when the detection result shows that the interface reflection signal is strong and the characteristic of typical isolated phase is presented; and detecting the measuring line by a high-density electrical method, and judging that the solid waste landfill suspicion exists in the measuring line when the detection result is high resistivity.
In this embodiment, the basis for determining the high resistivity anomaly by the transient electromagnetic method is: the high resistivity anomaly is a resistivity anomaly value of a certain region of the subsurface that is significantly deviated from a normal resistivity distribution compared to surrounding regions. High resistivity anomalies may be due to specific geological formations in the subsurface, such as containing high resistivity materials (which may be solid waste remaining in the subsurface of a solid waste landfill), low groundwater content or low porosity, etc. The detection of the high resistivity abnormality can provide information of the underground structure, and has important significance for mineral exploration, underground water resource evaluation and the like;
In this embodiment, the ground penetrating radar method determines that the interface reflection signal is strong, and the basis of the characteristic of the typical isolated phase is: the strong interface reflection signal means that in the ground penetrating radar method, when electromagnetic waves meet the interfaces between different underground mediums, reflection signals are generated; when the reflection coefficient of the interface is large or the resistivity difference between the media is large, the reflection signal is relatively strong; these interface reflection signals exhibit typical isolated phase characteristics in the GPR profile, i.e., appear as a clearer, independent waveform in the profile; in nondestructive testing, the strong interface reflection signal and the isolated phase characteristics can help to determine underground structures and detect hidden targets;
In this embodiment, the basis for determining the high resistivity by the high density electrical method is: the high resistivity means that the resistivity value of a certain area of the underground is higher, namely the conductivity of rock, soil or groundwater of the area is poorer; the high resistivity feature may correspond to a low resistivity, which generally represents a region of better conductivity; the high resistivity region may be due to the fact that the subsurface contains high resistivity material, i.e., solid waste that may remain in the subsurface of the solid waste landfill.
Specifically, in this embodiment, the spatial distribution situation of solid waste is determined with the assistance of the high-density electrical method, and based on this purpose, in this embodiment, a detection section of a G1 line and a G2 line is designed, as shown in fig. 7, and the two lines are both located in the A2 region, where the G1 line coincides with the transient electromagnetic A2L1 line, and the G2 line coincides with the transient electromagnetic A2L4 line.
The two-dimensional inversion resistivity profiles of the measurement lines G1 and G2 obtained by the high-density electrical method are shown in fig. 8 and 9, and as can be seen from fig. 8 and 9, the overall electrical distribution of the measurement line G1 and the measurement line G2 has similarity and corresponds well to the transient electromagnetic detection profile. The electrical vertical direction in the A2 area shows a high-low variation trend, the shallow part of the field is a filling layer according to the geological data of the field, the soil is loose, the resistivity is higher, the high resistance is in the range of 4m of the shallow part from the resistivity profile, the distribution is uneven, the thickness and the electrical variation are larger, the practical disclosure data of the drill hole is combined, the layer is an upper filling layer, and the resistivity value is larger than 30 Ω & m. Drilling holes S126 and S128 are respectively arranged at 50m and 80m of the section of the G1 measuring line, the depth of the pollutants is respectively disclosed as 0.8 m-1.7 m (thickness is 0.9 m) and 3.8 m-4.2 m (thickness is 0.4 m), and high-density electrical method achievements are interpreted on the G2 measuring line based on the drilling holes S126 and S128. Due to the volume effect of the direct current method, the explained solid waste thickness is larger than the actual thickness, and the physical properties of the stratum below 5m are more uniform, and the stratum is presumed to be an undisturbed stratum.
Specifically, in this embodiment, the structure of the stratum in the shallow portion (mainly within 5 m) is determined with assistance of a ground penetrating radar method, and the ground penetrating radar method detects the A1 region, the A2 region, the A3 region, the A4 region, the A5 region, the A6 region and the A7 region. In the A2 region, an abnormality at 1 is outlined from the A2-1 section, the number is YC01, and an A2-1 geological radar section image is shown in FIG. 10; in the A3 region, 3 anomalies are marked from the A3-1 section, the number is YC02-YC04, 3 anomalies are marked from the A3-2 section, the number is YC05-YC07, 1 anomalies are marked from the A3-3 section, the number is YC08, 1 anomalies are marked from the A3-4 section, the number is YC09, 1 anomalies are marked from the A3-5 section, and the number is YC10; in the A5 area, the abnormality is marked 1 from the A5-2 section, the number is YC11, the abnormality is marked 1 from the A5-6 section, the number is YC12, the abnormality is marked 1 from the A5-7 section, the number is YC14-YC15; in the A6 area, 2 anomalies are marked from the A6-1 section, the number is YC14-YC15, 2 anomalies are marked from the A6-2 section, and the number is YC16-YC17; and the geological radar anomalies 17 are co-circled, and all anomalies have strong reflected signals and are typical isolated phase characteristics.
According to the interpretation results of the three electromagnetic detection data, the abnormal distribution and the solid waste distribution of the local area can be integrally known. In the area covered by the investigation task, the abnormal distribution presents two characteristics: firstly, the abnormality has the characteristic of 'small quantity of multiple points and scattered distribution'; secondly, the abnormal types are more, including solid waste abnormality, original factory building foundation residue, polluted soil, hole cracks, household garbage and the like, and the data processing and interpretation technology provides higher challenges.
In the vertical direction, a large number of drill holes exist in the detection area, and the stratum in the detection area is mainly divided into three layers according to the core drilling and geological data, wherein the surface layer is covered with a filling layer, the porosity is high, the soil is loose, and the resistivity is mostly high when the water saturation is low; the second layer is a clay layer which,
Contains organic matters and has higher water saturation; the third layer is clay layer containing Fe-Mn nodule or rust spot. As can be seen by comparing the line with the nearby drilling data, the detection result of the embodiment is basically consistent with the actual stratum electrical characteristics of the drilling data, and the layering condition of the ground electric section and the lithology interface of the drilling coring have higher consistency, so that the detection result of the embodiment is more accurate in the vertical direction.
On a plane, according to transient electromagnetic detection data interpretation results, high-density electrical method interpretation results and ground penetrating radar geological interpretation results, abnormal areas mainly exist in A2, A3, A5 and A6 areas, wherein the A2 area and the A4 area find out a plurality of chemical solid waste agglomerations in the detection process, according to the comparison of the results of the high-density electromagnetic measurement lines and the transient electromagnetic measurement lines, the transient electromagnetic measurement data interpretation results and the high-density electrical method interpretation results have better correspondence, according to the abnormal distribution of the two methods, the solid waste is deduced to be mainly located in the A2 area, the A4 area only has transient electromagnetic detection data, and according to the general rule of the A2 area, the A4 area possibly contains a small amount of suspected solid waste landfill; the anomalies of the area delineation of A3 and A5 mainly take a ground penetrating radar method as a judgment basis, according to the anomaly characteristic analysis of the ground penetrating radar, the anomalies mainly take the uncompacted stratum structure and the residual building foundation as the main materials, and the site situation is combined to infer that the residual building materials mainly comprise concrete hardened fragments, masonry fragments, reinforcing steel bars and the like; the A6 area is less exposed abnormally, and according to the drilling and coring results, the pollutants in the A6 area are mixed with stratum soil, the abnormality is mainly a polluted soil layer, so that the mixed stratum mixed with the pollutants is difficult to form effective reflection, in the area, the transient electromagnetic method is used for explanation, and the abnormality mainly comprising the polluted soil in the A6 area is deduced.
In summary, after the types of the anomalies and the abnormal characteristics of each area are analyzed, the existence position of the solid waste anomalies in the investigation area can be approximately defined (as shown in fig. 11), wherein the solid waste anomalies are mainly located in the area A2, and the characteristics of multiple points and small quantity are presented, and a small quantity of solid waste is found on the surface of the area A4, and a small quantity of solid waste landfill is suspected to exist.
The method for detecting the measuring points on the measuring line with the solid waste landfill by using the ground penetrating radar method when the solid waste landfill is detected on the measuring line is detected by using the transient electromagnetic method or the density electric method comprises the following steps:
Detecting the measuring line in the measuring area by a transient electromagnetic method or a high-density electric method; when the detection result is that the high resistivity is abnormal or the interface reflection signal is strong and typical three-dimensional phase characteristics are presented, determining that solid waste landfill exists in the measuring line;
When the solid waste landfill exists in the measuring line, the measuring point on the measuring line is detected by a ground penetrating radar method, and when the detection result is high resistivity, the solid waste landfill exists in the measuring point.
When the solid waste landfill is detected to exist in the measuring point, the solid waste landfill existing in the measuring point is verified by a drilling method of a drilling machine, and the verification method is as follows: drilling the measuring point by a drilling machine, and if the section structures of the core obtained by drilling are inconsistent, indicating that solid waste landfill exists in the measuring point; wherein the depth of drilling is 4.5-7.5 m.
Specifically, in this embodiment, as shown in fig. 5, a Geoprobe environmental protection drilling machine is used to perform drilling sampling work on the plots of the Huaihe chemical plant and the Huaisthmus chemical plant. Comprehensively considering the distribution of land block soil and underground water survey points and the distribution of the polluted soil restoration and excavation range, and displaying the survey stage of the soil and underground water survey points and the polluted soil restoration area by the early working data without solid wastes, so that the point distribution verification of the above points or areas is not carried out. The distribution of drilling sites of the drilling machine in this embodiment is shown in fig. 6, and according to the actual development condition of the drilling work site, 136 soil site drilling works are completed in total, and the drilling depth is 4.5-7.5 m.
Specifically, in this embodiment, 136 point location drilling sampling operations are performed in Fengtai county, the Huaihe chemical plant and in the surrounding immediate vicinity, and according to the conditions of the texture, color, smell and the like of the core section, 9 drilling points are found out to have solid waste landfill conditions in total, and the solid waste landfill conditions are intensively distributed in 3 areas, namely, the immediate vicinity slope protection area of the Huaihe chemical plant, the southwest corner of the Huaihe chemical plant and the east side of the Huaihe chemical plant.
Wherein, the solid useless landfill layer mark information includes: solid waste landfill plane distribution range information, solid waste landfill thickness information and solid waste character of vertical distribution of solid waste landfill; wherein, the solid waste character comprises color, state and smell, and the state comprises solid state and liquid state; the solid waste landfill plane distribution range information refers to longitude and latitude of solid waste landfill plane distribution, the solid waste landfill thickness information refers to initial depth and termination depth of solid waste landfill in the vertical direction, and the solid waste landfill vertical distribution information refers to solid waste types corresponding to the solid waste landfill in the vertical direction.
The method for drawing the three-dimensional map of the solid waste landfill range through the visual geological modeling software comprises the following steps: drawing a solid waste landfill three-dimensional map through visual geological modeling software based on the solid waste landfill information and the solid waste landfill marking information; the solid waste landfill information comprises longitude and latitude and ground elevation information of a solid waste landfill range.
Specifically, in this embodiment, according to analysis and summary of geophysical detection results, the suspected solid waste landfill conditions in the areas A2, A4 and A6 are co-arranged, so as to further find out whether the two areas have solid waste landfill conditions, and if so, further find out the solid waste landfill range and the amount. And carrying out drilling verification work on the abnormal solid waste landfill area and the point positions found by the geophysical prospecting by using a Geoprobe drilling machine, and arranging 12 verification points in total.
According to the drilling verification result, solid waste is not found in the drilling core sections of the A4 area and the A6 area, the drilling core section of the A2 area shows that broken masonry is commonly contained in the mixed filling soil from the surface layer to 1.2 m-3.2 m, part of points are formed by black interlayers, no peculiar smell exists, the characteristics of the mixed filling soil on the upper layer of the area are similar to those of slag, building slag and soil mixtures (solid waste) found in adjacent temporary slope protection areas, and therefore the A2 area is judged to be in solid waste landfill, and the characteristics are slag, building slag and soil mixtures.
The method for defining the solid waste landfill range in the solid waste landfill measuring point by the encryption drilling comprises the following steps: when the solid waste landfill is detected to exist in the measuring point, encryption drilling is conducted in four directions of east, west, south and north, which are 1 meter away from the measuring point until no landfill exists below the point of the encryption drilling, so that the solid waste landfill range in the measuring point is defined, the solid waste landfill layer is marked, and the mark information of the solid waste landfill layer is obtained. The non-landfill under the point position of the encrypted drilling is judged by judging whether the section structures of the rock cores are consistent or not; when the core section structure is consistent, the character of the core section is single, and the core section only contains soil and does not contain solid waste, namely no landfill exists under the point position of encrypted drilling; when the core section structures are inconsistent, the property of the core section is not single, and the core section is indicated to contain not only soil but also solid wastes, namely solid wastes are buried in the point of encrypted drilling, and the drilling should be continued. It is understood that the above-mentioned encryption drilling belongs to the technical means common in the technical field.
Specifically, in this embodiment, according to the drilling verification result, the periphery of the point location obtained by the drilling verification result is subjected to encryption distribution, so as to further calculate the solid waste landfill range and the amount.
Specifically, in this embodiment, a three-dimensional map of a solid waste landfill range is drawn by visual geological modeling software, and the method for obtaining the solid waste landfill amount by calculation according to the three-dimensional map includes: using visual geologic modeling software (Earth Volumetric Studio, EVS) to map the drilling results to a three-dimensional map of the surface elevation and the solid waste landfill markers, as shown in fig. 12; the three-dimensional graph of the visual geological modeling software is obtained by the following steps: the solid waste landfill of the retired chemical plant in a certain county is mainly distributed in the immediate adjacent slope protection area of the Huaihe chemical plant, the southwest corner of the Huaihe chemical plant and the eastern side area of the Huaihe chemical plant, and the solid waste total landfill amount in the three-dimensional map is 266.9m 3 (287.2 t) through calculation of visual geological modeling software, and the landfill conditions of all areas are shown in table 2. The solid waste total landfill amount in the three-dimensional map is obtained through calculation by the visual geological modeling software, and belongs to a common solid waste total landfill amount calculation method in the technical field.
TABLE 2 list of solid waste landfill conditions for retired chemical plants in a county
The method for identifying the solid waste danger in the solid waste landfill range comprises the following steps: and acquiring the solid waste in the solid waste landfill range, identifying corrosiveness, reactivity, inflammability, leaching toxicity, toxic substance content and acute toxicity of the solid waste, and judging whether the solid waste is dangerous waste or not according to an identification result.
Specifically, in the embodiment, the operation process of identifying corrosiveness, reactivity, inflammability, leaching toxicity, toxic substance content and acute toxicity comprises sampling and detection analysis, wherein the sampling is to collect a solid waste sample, the detection analysis is carried out on corrosiveness, reactivity, inflammability, leaching toxicity, toxic substance content and acute toxicity in the collected solid waste, and the detection analysis methods of various detection indexes are different; the specifications and standards for the execution of the dangerous property identification of the solid waste in this embodiment include: technical Specification for hazardous waste identification (HJ 298-2019), identification of hazardous waste identification standard corrosiveness (GB 5085.1-2007), identification of hazardous waste identification standard acute toxicity primary screening (GB 5085.2-2007), identification of hazardous waste identification standard leaching toxicity (GB 5085.3-2007), identification of hazardous waste identification standard inflammability (GB 5085.4-2007), identification of hazardous waste identification standard reactivity (GB 5085.5-2007) and identification of hazardous waste identification standard toxic substance content (GB 5085.6-2007).
Claims (6)
1. A method of investigating a solid waste landfill, comprising:
Performing field exploration on the solid waste landfill, dividing the solid waste landfill based on the field exploration result to obtain a measuring area, dividing the measuring area to obtain a measuring line, and further dividing the measuring line to obtain measuring points;
Detecting a measuring line in the measuring area by a transient electromagnetic method or a density electric method, further detecting a measuring point on the measuring line with the solid waste landfill by a ground penetrating radar method when the solid waste landfill is detected on the measuring line, and defining a solid waste landfill range in the measuring point with the solid waste landfill by encryption drilling when the solid waste landfill is detected in the measuring point;
Drawing a three-dimensional graph of the solid waste landfill range through visual geological modeling software, and calculating according to the three-dimensional graph to obtain solid waste landfill quantity; finally, identifying the dangerousness of the solid waste in the solid waste landfill range to obtain a dangerousness identification result; and taking the solid waste landfill range, the solid waste landfill amount and the dangerous identification result in all the measuring points in the solid waste landfill as the investigation result of the solid waste landfill.
2. A method of investigating a solid waste landfill as claimed in claim 1, wherein the method of on-site exploration of the solid waste landfill comprises: based on landfill history data and on-site survey of the solid waste landfill site, primarily judging whether the solid waste landfill site is in solid waste landfill or not; when solid waste landfill exists, further judging the landfill position and the landfill material type of the solid waste landfill according to the landfill history data of the solid waste landfill site; wherein the landfill history data includes a solid waste landfill location and a solid waste trait that were once found in the solid waste landfill site.
3. A method of investigating a solid waste landfill as claimed in claim 2, wherein the method of dividing the solid waste landfill based on the results of the on-site exploration comprises: determining the area where the solid waste landfill exists according to landfill history data of the solid waste landfill site and the on-site survey result; taking the determined area with the solid waste landfill as a solid waste landfill area; equidistant division is carried out in the measuring area to obtain a measuring line; and finally, equally dividing the measuring lines to obtain measuring points.
4. A method of investigation of a solid waste landfill according to claim 1, wherein the method of demarcating the solid waste landfill range in the site of the solid waste landfill by means of encryption drilling is as follows: when the solid waste landfill is detected to exist in the measuring point, encryption drilling is conducted in four directions of east, west, south and north, which are 1 meter away from the measuring point until no landfill exists below the point of the encryption drilling, so that the solid waste landfill range in the measuring point is defined, the solid waste landfill layer is marked, and the mark information of the solid waste landfill layer is obtained.
5. The method of investigation of a solid waste landfill site of claim 4, wherein the solid waste landfill marking information comprises: solid waste landfill plane distribution range information, solid waste landfill thickness information and solid waste character of vertical distribution of solid waste landfill; wherein the solid waste traits include color, status and odor, and the status includes solid and liquid.
6. A method of investigating a solid waste landfill as claimed in claim 4, wherein:
the method for drawing the three-dimensional map of the solid waste landfill range through the visual geological modeling software comprises the following steps: drawing a solid waste landfill three-dimensional map through visual geological modeling software based on the solid waste landfill information and the solid waste landfill marking information; the solid waste landfill information comprises longitude and latitude and ground elevation information of a solid waste landfill range;
The method for identifying the solid waste danger in the solid waste landfill range comprises the following steps: and identifying corrosiveness, reactivity, inflammability, leaching toxicity, toxic substance content and acute toxicity of the solid waste in the solid waste landfill range, and judging whether the solid waste is dangerous waste according to an identification result.
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| CN202410459113.1A CN118444404A (en) | 2024-04-17 | 2024-04-17 | Investigation method of solid waste landfill site |
| JP2024068952A JP7530587B1 (en) | 2024-04-17 | 2024-04-22 | Methods for investigating solid waste landfill sites. |
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| US8560459B2 (en) | 2005-11-17 | 2013-10-15 | Casella Waste Systems, Inc. | Methods and facilities for a municipal solid waste management system |
| JP2010023020A (en) | 2008-06-17 | 2010-02-04 | Taisei Kanri Kaihatsu Kk | System for managing waste landfill disposal site |
| JP5377186B2 (en) | 2009-09-16 | 2013-12-25 | 一般財団法人日本環境衛生センター | Method for calculating the abundance ratio for each type of solid waste |
| JP5732764B2 (en) | 2010-07-21 | 2015-06-10 | 株式会社大林組 | Waste management system at waste disposal site |
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