CN104121895A - Soft soil area plane height measurement control point and embedding method thereof - Google Patents
Soft soil area plane height measurement control point and embedding method thereof Download PDFInfo
- Publication number
- CN104121895A CN104121895A CN201310154236.6A CN201310154236A CN104121895A CN 104121895 A CN104121895 A CN 104121895A CN 201310154236 A CN201310154236 A CN 201310154236A CN 104121895 A CN104121895 A CN 104121895A
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- mark post
- mark
- protection tube
- hole
- steel
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
- G01C15/06—Surveyors' staffs; Movable markers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Foundations (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a soft soil area plane height measurement control point and an embedding method of the soft soil area plane height measurement control point. The soft soil area plane height measurement control point comprises a surveying rod, wherein a core column made of cement mortar is arranged in the surveying rod, the bottom of the surveying rod is embedded to a dense sand layer or a solid bearing layer, a steel protecting tube is sheathed on a part of the surveying rod, which is exposed above the ground, an upper opening of the steel protecting tube is flush with the top end of the surveying rod, and a concrete abutment is poured to the periphery of the steel protecting tube. The embedding method comprises the following steps: embedding the surveying rod into a drilling hole, injecting the cement mortar to form the core column, installing the steel protecting tube, pouring the concrete abutment, fixing a surveying marker and repairing and building safeguards. The soft soil area plane height measurement control point and the embedding method have the advantages of reasonable structure, mature construction process, long service life and the like and are especially suitable for embedding the soft soil area plane height deep embedded measurement control point, and the stability of the basic point surveying rod can be guaranteed.
Description
Technical field
The present invention relates to the control survey reference installation of heavy construction construction survey and settlement monitoring and operation maintenance etc., relate in particular to a kind of plane elevation buried measurement reference mark and method for embedding thereof that is applicable to soft clay area.
Background technology
Control survey is the subject of research Accurate Measurement ground point locus.The net form being made up of these some positions is called control net, and its task is the foundation as lower grade surveying work, plays control action in precision.In actual measurement work, Xian Ce district selects some to have the point of controlling meaning, first their planimetric position and elevation is accurately measured out, and then measures other detail points according to them.
In prior art, the conventional way of burying reference mark underground is to make mark to laying of markstone, or charged electrical hole hammer out, the mode of concreting mark core.The measurement mark core of plane and vertical control point is fixed on to markstone, and the method for embedding of markstone is conventionally taked 1. to excavate and is buried the foundation ditch of measuring reference mark markstone underground and 2. build mixed earth and 3. bury underground and measure the reference mark mark core key steps such as maintenance that 4. the cement solidifies.But adopt the reference mark horizontal level of above-mentioned markstone and method for embedding and elevation all unstable, especially in soft clay area, when particularly periphery has Large Construction project, along with obvious variation all can occur for passage of time planimetric coordinates and elevation, even reference mark is destroyed, cannot ensure the stability at reference mark.
Chinese invention patent 201010540446.5 discloses Deep Embedded Piles and the method for embedding thereof of a kind of freezing and defrosting area plane vertical control point, mark post by the steel on its top and cement protection tube and between fine sand packed layer, steel protection tube and mark post between slide construction and cement mortar protective course, stem stem, the mud top layer of mark post form.Method for embedding by excavating stake hole, top, bury cement protection tube underground, hole, insert mark post, injected water cement mortar, the step such as slide construction and fixed base point mark is set forms.This invention all can be controlled at thaw collapse amount in permissible range for thaw collapse, strong thaw collapse area, and particularly the depth of burying of mark post can reach the gravel soil layer below freezing deeply according to freezing dark adjustment.But this invention structure is comparatively complicated, and work efficiency is not high, and the measurement reference mark that is not suitable for soft clay area is buried underground.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of plane elevation buried measurement reference mark and method for embedding thereof that is applicable to soft clay area, for solving the problems of the prior art.
For achieving the above object and other relevant objects; the invention provides plane measurement of higher degree reference mark, a kind of soft clay area; comprise mark post; in described mark post, be provided with the stem stem that sand-cement slurry forms; described mark post bottom is buried underground to dense sand stratum or solid supporting course; described mark post is exposed to the above part in ground and is arranged with steel protection tube, and steel protection tube is suitable for reading concordant with mark post top, and concrete pier base has been built in described steel protection tube periphery.
Optionally, described mark post by plurality of sections of steel pipes be threaded connection, pipe collar connects or is welded to connect and form.
Optionally, described steel pipe is diameter of phi 160-180mm, wall thickness 4-10mm, the weldless steel tube that length is 1-6m.
Optionally, the diameter of described steel protection tube is Φ 190-210mm.
Optionally, the pallet that described steel protection tube arranges by bottom is fixed on described mark post.
Optionally, described concrete pier base width is 50-60cm.
Optionally, described mark post is exposed to ground 40-50cm.
The present invention also comprises the method for embedding at plane measurement of higher degree reference mark, soft clay area, comprise the following steps: 1) hole in position, buried measurement reference mark, bore diameter is 170-190mm, hole depth reaches dense sand stratum or solid supporting course, borehole perpendicularity error is not more than 1 degree, reach after hole depth requires and carry and bore whole hole, clear hole; 2) aperture, hole deviation, the hole depth of monitoring boring repeats cleaning bottom of hole, clear hole in the defective situation of boring, until detect qualified; 3) by diameter of phi 160-180mm, wall thickness 4-10mm, each joint steel pipe that length is 1-6m section by section be threaded standard pipe collar connects or welding after, insert boring at the bottom of hole, mark post top is exposed to ground 40-50cm; 4) enter sand-cement slurry from mark post top to hole rising pouring, sand-cement slurry is upwards returned and is formed cement mortar protective course to ground along borehole wall, and makes sand-cement slurry fill mark post to become stem stem; 5) be that the steel protection tube of Φ 190-210mm is sheathed on mark post and is exposed to above ground portion by diameter, steel protection tube is suitable for reading concordant with mark post, and steel protection tube bottom is provided with pallet, pallet and mark post welding; 6) casting concrete pier around steel protection tube, concrete pier base width is 50-60cm; 7) fixation measuring mark is installed on mark post top, is built by laying protective equipment, bury punctuate protection Sign Board underground.
By above technical scheme, the present invention has following technique effect compared to prior art: the depth of burying of mark post reaches dense sand stratum or solid supporting course, ensure whole pile foundation stability, this buried measurement reference mark can be controlled at settling amount in permissible range in soft clay area, and reach steady state (SS) within a short period of time; Connect section by section each steel pipe, can ensure immersed tube verticality, increase work efficiency and success ratio; That the present invention has is rational in infrastructure, construction technology is ripe, can ensure basic point mark stability, the advantages such as long service life, and the buried measurement of the plane elevation reference mark that is particularly useful for soft clay area is buried underground.
Brief description of the drawings
Fig. 1 is the structural representation of the buried measurement of the plane elevation reference mark preferred embodiment of soft clay area of the present invention.
Element numbers explanation:
1 mark post
2 stem stems
3 steel protection tubes
4 concrete pier bases
51 protective covers
52 protection wells
61 main survey marks
62 auxiliary survey marks
Embodiment
By particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this instructions below.
Refer to Fig. 1.Notice, appended graphic the illustrated structure of this instructions, ratio, size etc., all contents in order to coordinate instructions to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under effect that the present invention can produce and the object that can reach, all should still drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, in this instructions, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of the present invention without essence.
Consult shown in Fig. 1; it is the structural representation of soft clay area of the present invention plane measurement of higher degree reference mark preferred embodiment; comprise mark post 1; in described mark post 1, be provided with the stem stem 2 that sand-cement slurry forms; described mark post bottom is buried underground to dense sand stratum or solid supporting course; ensure whole pile foundation stability; described mark post is exposed to the above part in ground and is arranged with steel protection tube 3; steel protection tube is suitable for reading concordant with mark post top; concrete pier base 4 has been built in described steel protection tube periphery, with the above part of fixed bottom boundary.
For convenience of installing, mark post by plurality of sections of steel pipes be threaded connection, pipe collar connects or is welded to connect and forms.In above-mentioned connected mode, adopt welding cannot ensure accurate verticality, adopt pipe collar need to additionally take borehole space, therefore preferably adopt thread connecting mode, when ensureing verticality, installation rate is the fastest.Above-mentioned steel pipe is diameter of phi 160-180mm, wall thickness 4-10mm, and the weldless steel tube that length is 1-6m, in this preferred embodiment, actual employing steel pipe sizes is diameter of phi 168mm, wall thickness 5mm, length 3m.
Determine according to measuring reference mark geopotentia mark post bassets how many, high-land, mark post bassets relatively shortly, otherwise relatively long, generally mark post is exposed to ground 40-50cm.The mark post sheathed steel protection tube 3 of part that bassets, the bottom of steel protection tube 3 is provided with pallet, by pallet is welded on mark post, complete fixing.The diameter of above-mentioned steel protection tube is Φ 190-210mm, and in this preferred embodiment, the actual steel protection tube that adopts is of a size of diameter of phi 200mm.
After the installation of steel protection tube; casting concrete pier 4 around it; steel protection tube, concrete pier base height are all concordant with mark post top; concrete pier base width is 50-60cm; the width of concrete pier base also determines according to physical features, high-land, and its width is relatively little; high-land, its width is relatively large.Then bury survey mark underground, comprise main survey mark 61 and auxiliary survey mark 62.Finally build by laying protective equipment, protective equipment comprises the protective cover 51 on protection well 52 and protection well, and protective cover lid is the cement cover board that square 1m × 1m, thickness are 10cm.
By above measure, the present invention carries out ensureing to measure the reliable and stable of reference mark under the condition of Large Construction around, and is difficult for destroyedly, is beneficial to long-term engineering monitoring intermediate item and uses.
Method for embedding below in conjunction with plane measurement of higher degree reference mark, soft clay area is further described, and comprises the following steps:
1) in position, buried measurement reference mark boring, bore diameter is 170-190mm, and bore diameter equates substantially with mark post diameter, and hole depth reaches dense sand stratum or solid supporting course, and borehole perpendicularity error is not more than 1 degree, reaches after hole depth requires and carries and bore whole hole, hole clearly;
2) aperture, hole deviation, the hole depth of monitoring boring repeats cleaning bottom of hole, clear hole in the defective situation of boring, until detect qualified;
3) by diameter of phi 160-180mm, wall thickness 4-10mm, each joint steel pipe that length is 1-6m section by section be threaded standard pipe collar connects or welding after, insert boring at the bottom of hole, mark post top is exposed to ground 40-50cm.In this preferred embodiment, actual employing steel pipe sizes is diameter of phi 168mm, wall thickness 5mm, length 3m;
4) enter sand-cement slurry so that the more general bored concrete pile of its side friction power is high from mark post top with certain pressure to hole rising pouring, sand-cement slurry is upwards returned and is formed cement mortar protective course to ground along borehole wall, and makes sand-cement slurry fill mark post to become stem stem;
5) be that the steel protection tube of Φ 190-210mm is sheathed on mark post and is exposed to above ground portion by diameter, in this preferred embodiment, the actual steel protection tube that adopts is of a size of diameter of phi 200mm.Steel protection tube is suitable for reading concordant with mark post, and steel protection tube bottom is provided with pallet, pallet and mark post welding;
6) casting concrete pier around steel protection tube, concrete pier base width is 50-60cm;
7) fixation measuring mark is installed on mark post top, is built by laying protective equipment, bury punctuate protection Sign Board underground.
In sum, the depth of burying of mark post of the present invention reaches dense sand stratum or solid supporting course, ensures whole pile foundation stability, this buried measurement reference mark can be controlled at settling amount in permissible range in soft clay area, and reach steady state (SS) within a short period of time; Connect section by section each steel pipe, can ensure immersed tube verticality, increase work efficiency and success ratio; That the present invention has is rational in infrastructure, construction technology is ripe, can ensure basic point mark stability, the advantages such as long service life, and the buried measurement of the plane elevation reference mark that is particularly useful for soft clay area is buried underground.So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (8)
1. plane measurement of higher degree reference mark, a soft clay area; comprise mark post; in described mark post, be provided with the stem stem that sand-cement slurry forms; it is characterized in that; described mark post bottom is buried underground to dense sand stratum or solid supporting course; described mark post is exposed to the above part in ground and is arranged with steel protection tube, and steel protection tube is suitable for reading concordant with mark post top, and concrete pier base has been built in described steel protection tube periphery.
2. plane measurement of higher degree reference mark, soft clay area according to claim 1, is characterized in that, described mark post by plurality of sections of steel pipes be threaded connection, pipe collar connects or is welded to connect and forms.
3. plane measurement of higher degree reference mark, soft clay area according to claim 2, is characterized in that, described steel pipe is diameter of phi 160-180mm, wall thickness 4-10mm, the weldless steel tube that length is 1-6m.
4. plane measurement of higher degree reference mark, soft clay area according to claim 3, is characterized in that, the diameter of described steel protection tube is Φ 190-210mm.
5. plane measurement of higher degree reference mark, soft clay area according to claim 1, is characterized in that, the pallet that described steel protection tube arranges by bottom is fixed on described mark post.
6. plane measurement of higher degree reference mark, soft clay area according to claim 1, is characterized in that, described concrete pier base width is 50-60cm.
7. plane measurement of higher degree reference mark, soft clay area according to claim 1, is characterized in that, described mark post is exposed to ground 40-50cm.
8. the method for embedding at plane measurement of higher degree reference mark, soft clay area according to claim 1, is characterized in that, comprises the following steps:
1) in the boring of position, buried measurement reference mark, bore diameter is 170-190mm, and hole depth reaches dense sand stratum or solid supporting course, and borehole perpendicularity error is not more than 1 degree, reaches after hole depth requires and carries and bore whole hole, clear hole;
2) aperture, hole deviation, the hole depth of monitoring boring repeats cleaning bottom of hole, clear hole in the defective situation of boring, until detect qualified;
3) by diameter of phi 160-180mm, wall thickness 4-10mm, each joint steel pipe that length is 1-6m section by section be threaded standard pipe collar connects or welding after, insert boring at the bottom of hole, mark post top is exposed to ground 40-50cm;
4) enter sand-cement slurry from mark post top to hole rising pouring, sand-cement slurry is upwards returned and is formed cement mortar protective course to ground along borehole wall, and makes sand-cement slurry fill mark post to become stem stem;
5) be that the steel protection tube of Φ 190-210mm is sheathed on mark post and is exposed to above ground portion by diameter, steel protection tube is suitable for reading concordant with mark post, and steel protection tube bottom is provided with pallet, pallet and mark post welding;
6) casting concrete pier around steel protection tube, concrete pier base width is 50-60cm;
7) fixation measuring mark is installed on mark post top, is built by laying protective equipment, bury punctuate protection Sign Board underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310154236.6A CN104121895B (en) | 2013-04-28 | 2013-04-28 | The stake bar at plane measurement of higher degree control point, soft clay area and method for embedding thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310154236.6A CN104121895B (en) | 2013-04-28 | 2013-04-28 | The stake bar at plane measurement of higher degree control point, soft clay area and method for embedding thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104121895A true CN104121895A (en) | 2014-10-29 |
| CN104121895B CN104121895B (en) | 2016-07-20 |
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| CN201310154236.6A Expired - Fee Related CN104121895B (en) | 2013-04-28 | 2013-04-28 | The stake bar at plane measurement of higher degree control point, soft clay area and method for embedding thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862901A (en) * | 2016-06-01 | 2016-08-17 | 青岛市勘察测绘研究院 | Docked type bed rock measuring marker and construction method thereof |
| CN107063178A (en) * | 2017-04-21 | 2017-08-18 | 中水北方勘测设计研究有限责任公司 | A kind of concrete level mark for installing displacement transducer and its elevation observation and computational methods |
| CN109024573A (en) * | 2018-08-08 | 2018-12-18 | 中国十七冶集团有限公司 | A kind of inbuilt construction method in collapsible loess geology control point |
| CN109944272A (en) * | 2019-04-12 | 2019-06-28 | 中铁七局集团有限公司 | A kind of subway work multifunctional measuring architecture of base station |
| CN110672062A (en) * | 2019-08-23 | 2020-01-10 | 广州市地质调查院(广州市地质环境监测中心) | Embedding method of monitoring points for monitoring settlement of bedrock |
| CN111174755A (en) * | 2020-01-09 | 2020-05-19 | 青岛市勘察测绘研究院 | Expansive soil area plane elevation measurement control point device and installation method |
| CN113529682A (en) * | 2021-06-24 | 2021-10-22 | 中国五冶集团有限公司 | Soft soil layer measurement control point structure and construction method |
| CN118376205A (en) * | 2024-06-25 | 2024-07-23 | 中国科学院南京土壤研究所 | Surface elevation monitoring device convenient to installation is fixed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105862901A (en) * | 2016-06-01 | 2016-08-17 | 青岛市勘察测绘研究院 | Docked type bed rock measuring marker and construction method thereof |
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| CN109024573A (en) * | 2018-08-08 | 2018-12-18 | 中国十七冶集团有限公司 | A kind of inbuilt construction method in collapsible loess geology control point |
| CN109944272A (en) * | 2019-04-12 | 2019-06-28 | 中铁七局集团有限公司 | A kind of subway work multifunctional measuring architecture of base station |
| CN110672062A (en) * | 2019-08-23 | 2020-01-10 | 广州市地质调查院(广州市地质环境监测中心) | Embedding method of monitoring points for monitoring settlement of bedrock |
| CN111174755A (en) * | 2020-01-09 | 2020-05-19 | 青岛市勘察测绘研究院 | Expansive soil area plane elevation measurement control point device and installation method |
| CN111174755B (en) * | 2020-01-09 | 2022-02-15 | 青岛市勘察测绘研究院 | Expansive soil area plane elevation measurement control point device and installation method |
| CN113529682A (en) * | 2021-06-24 | 2021-10-22 | 中国五冶集团有限公司 | Soft soil layer measurement control point structure and construction method |
| CN118376205A (en) * | 2024-06-25 | 2024-07-23 | 中国科学院南京土壤研究所 | Surface elevation monitoring device convenient to installation is fixed |
| CN118376205B (en) * | 2024-06-25 | 2024-10-22 | 中国科学院南京土壤研究所 | Surface elevation monitoring device convenient to installation is fixed |
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| CN104121895B (en) | 2016-07-20 |
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