CN109598049A - Method for drilling rock fracture development degree and regional rock fracture development rule - Google Patents
Method for drilling rock fracture development degree and regional rock fracture development rule Download PDFInfo
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Abstract
The invention relates to the technical field of geological exploration, and discloses a method for the development degree of rock cracks of a drilled hole and the development rule of rock cracks in an area, which comprises the steps of collecting logging data of the drilled hole; counting the RQD values of all drill holes in each round; according to the rock quality classification table, performing rock quality grade division and judging the rock quality grade of each turn; obtaining the rock fracture development degree of each complete drill hole according to a rock fracture development degree equation of the whole drill hole; counting the results of the calculation of the development degrees of all the rock fractures of the drill hole, and generating a contour map by using a drawing software by using an interpolation method; analyzing the development degree of each drill hole rock fracture according to the classification table of the rock fracture degree of the drill hole; and analyzing the development rule of the regional rock fracture based on the drawn contour map and the analysis of the development degree of the rock fracture of each drill hole. The method has the advantage that the rock fracture development degree of the whole drill hole and the regional rock fracture development rule can be accurately analyzed.
Description
Technical field
The present invention relates to technical field of geological exploration, more particularly to a kind of drilling rock cranny development degree and region rock
The method of stony fracture gap law of development.
Background technique
RQD is a kind of index for indicating rock quality quality, can reflect rock fracture in each drilling round trip indirectly
Development degree: cranny development is better, and rock quality lower grade, RQD value is with regard to smaller.But RQD value can only reflect each creep into back
Cranny development degree in secondary, and the drilling round trip quantity of each drilling is often very much, it can not embody the crack entirely to drill
Development degree and the cranny development in region rule, and there has been no the rock entirely to drill is calculated using round trip RQD value at present
The method of stony fracture gap development degree and using RQD value come the method for analyzed area rock fracture law of development.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of drilling rock cranny development degree and the sides of region rock fracture law of development
Method can not accurately calculate the cranny development degree entirely to drill to solve method in the prior art based on round trip RQD value
And the technical problem of the cranny development rule in region.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of drilling rock cranny development degree and region rock fractures
The method of law of development, comprising: step S1 collects drilling and edits and records data；Step S2 counts the RQD of all each round trips of drilling
Value；Step S3 carries out rock quality grade classification, the rock quality etc. of each round trip of preliminary judgement according to rock quality classification chart
Grade；Step S4 acquires each rock fracture development completely to drill according to the rock fracture development degree equation entirely to drill
Degree；Step S5 counts the result that all drilling rock cranny development degree calculate, the rock fracture that will entirely drill
Development degree value is thrown into mapping software by each self-drilling real coordinate position, generates equivalence by mapping software using interpolation method
Line chart；Step S6 carries out the analysis of each drilling rock cranny development degree according to drilling rock crack degree classification table；Step
S7, the analysis based on the isogram drawn out and to each drilling rock cranny development degree, the region Lai Jinhang rock fracture
The analysis of law of development.
Wherein, the step S4 includes: the rock fracture development degree equation entirely to drill are as follows:
Wherein, PfFor the rock fracture development degree (%) entirely to drill；RQDiFor i-th of round trip in matrixes of drilled holes part
RQD value (%)；LiFor the drilling depth length of i-th of round trip in matrixes of drilled holes part；LsDrilling depth for entire matrixes of drilled holes part is total
Length；N is the bedrock portion round trip total quantity entirely to drill.
Wherein, in the step S1, it includes: probing raw log table, geological drilling that data is edited and recorded in the collection drilling
Table is edited and recorded in drilling, Geology Drilling edits and records table, drilling quality examination table and distribution of boreholes data.
Wherein, the step S2 further include: obtain in each round trip drilling institute's coring in each matrixes of drilled holes part
Ratio of the sum of the length accumulated of core section of all length greater than 10cm with the round trip entirety drilling depth length, the ratio with
Percentage indicates.
Wherein, in the step S4, the RQD value of each round trip is that each round trip rock of reflection is complete in matrixes of drilled holes part
Degree, RQD value is higher, and rock quality is better, PfValue it is lower.
Wherein, in the step S4, in entire matrixes of drilled holes part the relatively low round trip of rock quality grade into
Ruler length (Li) and entire matrixes of drilled holes part drilling depth total length (Ls) ratio and pfProportional, ratio is bigger, pf
Value it is higher.
Wherein, in the step S3, if the RQD value is greater than 90, show rock quality grade preferably；If described
RQD value then shows that rock quality grade is preferable between 75 to 90；If the RQD value shows rock between 50 to 75
Credit rating is poor；If the RQD value between 25 to 50, shows that rock quality grade is poor；If the RQD value is less than
25, then show that rock quality grade is very poor.
Wherein, in the step S6, if PfGreater than 30, then show that drilling rock crack degree is fabulous；If PfIt is arrived 20
Between 30, then show that drilling rock crack degree is fine；If PfBetween 10 to 20, then show that drilling rock crack degree is
Generally；If PfLess than 10, then show that drilling rock crack degree is poor.
Wherein, the PfValue is higher, and the drilling rock cranny development degree is higher, the PfIt is worth lower, the drilling rock
Stony fracture gap development degree is lower.
Wherein, the isopleth value for constituting the isogram is higher, then shows PfIt is worth higher, the cranny development degree of rock
Better.
(3) beneficial effect
Method provided by the invention has the advantages that compared with prior art
In this application, by using the present processes, so as to realize to complete drilling rock cranny development journey
Degree is analyzed, and is analyzed region rock fracture law of development, and RQD value may make to obtain more preferable, more perfect benefit
With, and it is not limited solely to the division of rock quality grade in round trip drilling.Such method can be to the cranny development journey of each drilling
Degree is quantified, and more detailed macroscopic analysis can be carried out to region cranny development rule, and then assistant analysis water vein
Distribution characteristics, assist determine region exploitation water vein beneficial zone, substantially increase water vein research process
In working efficiency.
Detailed description of the invention
Fig. 1 is the method for the drilling rock cranny development degree and region rock fracture law of development of embodiments herein
Step flow diagram；
Fig. 2 is the method for the drilling rock cranny development degree and region rock fracture law of development of embodiments herein
Involved in rock quality grade separation table；
Fig. 3 is the method for the drilling rock cranny development degree and region rock fracture law of development of embodiments herein
Involved in region rock fracture law of development figure；
Fig. 4 is the method for the drilling rock cranny development degree and region rock fracture law of development of embodiments herein
Involved in drilling rock cranny development degree classification table.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment 1:
As shown in Figures 1 to 4, this application provides a kind of drilling rock cranny development degree and region rock fracture to develop
The embodiment of the method for rule, this method comprises:
Step S1 collects drilling and edits and records data；
Step S2 counts the RQD value of all each round trips of drilling；
Step S3 carries out rock quality grade classification, the rock of each round trip of preliminary judgement according to rock quality classification chart
Credit rating；
Step S4 acquires each rock fracture completely to drill according to the rock fracture development degree equation entirely to drill
Development degree；
Step S5 counts the result that all drilling rock cranny development degree calculate, the rock that will entirely drill
Cranny development degree value is thrown into mapping software by each self-drilling real coordinate position, is generated using interpolation method by mapping software
Isogram；
Step S6 carries out the analysis of each drilling rock cranny development degree according to drilling rock crack degree classification table；
Step S7, the analysis based on the isogram drawn out and to each drilling rock cranny development degree, Lai Jinhang
The analysis of region rock fracture law of development.Specifically, in this application, by using the present processes, so as to reality
Now complete drilling rock cranny development degree is analyzed, and region rock fracture law of development is analyzed, can be made
It obtains RQD value and obtains more preferable, more perfect utilization, and be not limited solely to the division of rock quality grade in round trip drilling.Such side
Method can quantify the cranny development degree of each drilling, and more in detail macroscopical point can be carried out to region cranny development rule
Analysis, and then the distribution characteristics of assistant analysis region water vein assist the beneficial zone for determining region exploitation water vein,
Substantially increase the working efficiency in water vein research process.
In the comparison preferred embodiment of the application, the step S4 includes: that the rock entirely to drill is split
Gap development degree equation are as follows:
Wherein, PfFor the rock fracture development degree (%) entirely to drill；RQDiFor i-th of round trip in matrixes of drilled holes part
RQD value (%)；LiFor the drilling depth length of i-th of round trip in matrixes of drilled holes part；LsDrilling depth for entire matrixes of drilled holes part is total
Length；N is the bedrock portion round trip total quantity entirely to drill.
In a preferred embodiment, in the step S1, it includes: that probing is original that data is edited and recorded in the collection drilling
Class's report, table is edited and recorded in geological drilling drilling, Geology Drilling edits and records table, drilling quality examination table and distribution of boreholes data.
It should be noted that the step S1 of the application not merely is confined to situation cited by above-described embodiment,
It can also be adjusted correspondingly according to practical situation.
In a preferred embodiment, step S2 further include: obtain each round trip in each matrixes of drilled holes part
Creep into the sum of length that core section of all length greater than 10cm in institute's coring is accumulated and the round trip entirety drilling depth length
Ratio, the ratio is as a percentage.
In a specific embodiment, drafting certain region has 30 drillings, and number is respectively ZK01~ZK30, wherein
ZK01 matrixes of drilled holes part totally 120 round trips, wherein so-called " round trip ", which refers to, each time finishes drilling tool down toward bottom hole drilling
Afterwards, a work cycle to ground is all proposed out of hole.If the first round trip of ZK01 bedrock portion has crept into 100 centimetres,
The rock core section that the round trip has three segment length to be greater than 10 centimetres, respectively 12 centimetres, 25 centimetres and 30 centimetres, then the round trip
RQD value=(12+25+30)/100=70%, and so on, count the RQD of 119 round trips of ZK01 matrixes of drilled holes some residual
Value counts the RQD value of each round trip in each matrixes of drilled holes part ZK02~ZK30.
In another preferred embodiment, in step S4, the RQD value of each round trip is in matrixes of drilled holes part
Reflect each round trip rock integrated degree, RQD value is higher, and rock quality is better, PfValue it is lower.
In one embodiment, in step S4, rock quality grade is relatively low in entire matrixes of drilled holes part
Drilling depth length (the L of round tripi) and entire matrixes of drilled holes part drilling depth total length (Ls) ratio and pfProportional, than
It is worth bigger, pfValue it is higher.
In entire drilling, the drilling depth length of the low round trip of rock quality grade accounts for matrixes of drilled holes part drilling depth total length
Ratio is bigger, PfValue it is bigger.That is, after the RQD value of the entire each round trip in matrixes of drilled holes part is subtracted each other with 1, with
The length of each round trip is weighted and averaged calculating as flexible strategy.Then, journey is developed using the above-mentioned rock fracture entirely to drill
Degree equation is weighted and averaged calculating to the RQD value of each round trip in each complete matrixes of drilled holes part, to acquire entire drilling
Rock fracture development degree.
As shown in Fig. 2, in a preferred embodiment, in step S3, if the RQD value is greater than 90, showing rock
Stone credit rating is preferably.
If the RQD value between 75 to 90, shows that rock quality grade is preferable.
If the RQD value between 50 to 75, shows that rock quality grade is poor.
If the RQD value between 25 to 50, shows that rock quality grade is poor.
If the RQD value less than 25, shows that rock quality grade is very poor.
It should be noted that by the RQD in the RQD value of each round trip counted and above-mentioned rock quality grade separation table
The range of value is compared, so as to accurately obtain rock quality grade.
As shown in figure 4, in the comparison preferred embodiment of the application, in step S6, if PfGreater than 30, then
Show that drilling rock crack degree is fabulous.
If PfBetween 20 to 30, then show that drilling rock crack degree is fine.
If PfBetween 10 to 20, then show that drilling rock crack degree is general.
If PfLess than 10, then show that drilling rock crack degree is poor.
That is, P can be obtained based on the above-mentioned rock fracture development degree equation entirely to drillfValue, by by the Pf
Value and the P in Fig. 4fRange be compared, so that current drilling rock crack degree can be accurately determined out.
In a preferred embodiment, the PfValue is higher, and the cranny development degree is higher, the PfIt is worth lower, crack hair
It is lower to educate degree.
In another preferred embodiment, in the isogram, the isopleth value for constituting the isogram is higher,
Then show PfValue is higher, and the cranny development degree of rock is better.
It should also be noted that, carrying out the analysis method of region rock fracture law of development specifically:
According to the P in Fig. 4fClassification can clearly be seen that: PfValue is higher, and the cranny development degree of rock is higher；Phase
Instead, PfValue is lower, and the cranny development degree of rock is lower.It is corresponded in Fig. 3, can be intuitive to see with this relationship: etc.
It is higher to be worth line chart medium value line value, PfValue is just higher and higher, and cranny development degree is with regard to higher and higher.It, can be on a macro scale according to Fig. 3
The case where finding out rock fracture distribution and the changing rule on region.
That is, can accurately analyze complete drilling rock cranny development degree and region rock using above method
Stony fracture gap law of development.
Except this, on the basis of above, this method can also auxiliarily analyze the distribution characteristics of water vein, and auxiliary determines
The beneficial zone of region exploitation water vein.It is worth noting that, to be able adequately determines the distribution characteristics of water vein and
The beneficial zone of region exploitation water vein, it is necessary to which comprehensive to combine other means, this is mainly by the underground space and crack
It is lauched the complexity decision of formation condition.This requirement investigates thoroughly that the landform in region and geomorphic feature (influence the fortune of water vein
Dynamic rule), meteorological model feature (Atmospheric precipitation is the important sources of underground water planar supply, influences the water of underground water), pleat
(fold influences movement and the enrichment discipline of water vein for wrinkle and fault conditions；Nearby often rock fracture is developed for fracture
Degree is higher, but fracture can also be blocked water with water guide, need to find out scale and property), formation lithology (influence water vein
Enrichment, infiltration), groundwater type, water-bearing layer distribution situation, underground water mend diameter row rule (supply of water vein, runoff and
Total quantity control), aquifer water well etc..
It, can therefore on the basis of having analyzed complete drilling rock cranny development degree and region rock fracture law of development
In conjunction with the data collection (analyses such as topography and geomorphology, meteorological model, areal geology, the hydrogeology in collection research area region
Topography and landform character, meteorological model feature, fold and fault conditions, formation lithology, groundwater type, water-bearing layer distribution
Situation, underground water mend diameter row rule etc.), ground investigation (field is made an on-the-spot survey on the spot), physical prospecting prospecting (with High Density Resistivity, swash
Send out the groundwater occurrence and water-bearing layer distribution situation, fault conditions on the vertical face of the methods of polarization method analysis), probing discloses
(determine variation of the formation lithology on vertical, find out water-bearing layer water level and distribution situation), test (calculate the hydrology with bailing test
Geologic parameter, determine aquifer water well) etc. means, under the premise of various aspects comprehensively consider, with studying the crack in the region
The distribution characteristics being lauched determines the beneficial zone of region exploitation water vein.
In conclusion in this application, by using the present processes, being split so as to realize to complete drilling rock
Gap development degree is analyzed, and is analyzed region rock fracture law of development, and RQD value may make to obtain more preferably, more
Perfect utilization, and it is not limited solely to the division of rock quality grade in round trip drilling.Such method can split each drilling
Gap development degree is quantified, and can carry out more detailed macroscopic analysis to region cranny development rule, and then assistant analysis is split
The distribution characteristics that unoccupied place is lauched assists the beneficial zone for determining region exploitation water vein, substantially increases water vein
Working efficiency in research process.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method of drilling rock cranny development degree and region rock fracture law of development characterized by comprising
Step S1 collects drilling and edits and records data；
Step S2 counts the RQD value of all each round trips of drilling；
Step S3 carries out rock quality grade classification, the rock quality of each round trip of preliminary judgement according to rock quality classification chart
Grade；
Step S4 acquires each rock fracture development completely to drill according to the rock fracture development degree equation entirely to drill
Degree；
Step S5 counts the result that all drilling rock cranny development degree calculate, the rock fracture that will entirely drill
Development degree value is thrown into mapping software by each self-drilling real coordinate position, generates equivalence by mapping software using interpolation method
Line chart；
Step S6 carries out the analysis of each drilling rock cranny development degree according to drilling rock crack degree classification table；
Step S7, the analysis based on the isogram drawn out and to each drilling rock cranny development degree, the region Lai Jinhang
The analysis of rock fracture law of development.
2. the method according to claim 1, wherein the step S4 includes: that the rock entirely to drill is split
Gap development degree equation are as follows:
Wherein, PfFor the rock fracture development degree (%) entirely to drill；RQDiFor the RQD of i-th of round trip in matrixes of drilled holes part
It is worth (%)；LiFor the drilling depth length of i-th of round trip in matrixes of drilled holes part；LsFor the drilling depth total length of entire matrixes of drilled holes part；
N is the bedrock portion round trip total quantity entirely to drill.
3. the method according to claim 1, wherein in the step S1, data is edited and recorded in the collection drilling
Include: probing raw log table, geological drilling drilling edit and record table, Geology Drilling edits and records table, drilling quality examination table and
Distribution of boreholes data.
4. the method according to claim 1, wherein the step S2 further include: obtain each matrixes of drilled holes portion
The sum of length that core section of all length greater than 10cm in the drilling institute's coring of each round trip in point is accumulated and the round trip
The ratio of whole drilling depth length, the ratio is as a percentage.
5. according to the method described in claim 2, it is characterized in that, in the step S4, each time in matrixes of drilled holes part
Secondary RQD value is each round trip rock integrated degree of reflection, and RQD value is higher, and rock quality is better, PfValue it is lower.
6. according to the method described in claim 2, it is characterized in that, in the step S4, rock in entire matrixes of drilled holes part
Drilling depth length (the L of the relatively low round trip of stone credit ratingi) and entire matrixes of drilled holes part drilling depth total length (Ls) ratio
With pfProportional, ratio is bigger, pfValue it is higher.
7. the method according to claim 1, wherein in the step S3, if the RQD value is greater than 90,
Show rock quality grade preferably；
If the RQD value between 75 to 90, shows that rock quality grade is preferable；
If the RQD value between 50 to 75, shows that rock quality grade is poor；
If the RQD value between 25 to 50, shows that rock quality grade is poor；
If the RQD value less than 25, shows that rock quality grade is very poor.
8. according to the method described in claim 2, it is characterized in that, in the step S6, if PfGreater than 30, then show to drill
Rock fracture degree is fabulous；
If PfBetween 20 to 30, then show that drilling rock crack degree is fine；
If PfBetween 10 to 20, then show that drilling rock crack degree is general；
If PfLess than 10, then show that drilling rock crack degree is poor.
9. the method according to claim 1, wherein the PfIt is worth higher, the drilling rock cranny development degree
It is higher, the PfValue is lower, and the drilling rock cranny development degree is lower.
10. the method according to claim 1, wherein constituting the isogram in the isogram
Isopleth value is higher, then shows PfValue is higher, and the cranny development degree of rock is better.
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