CN105808934B - Earth's surface damage range and disturbance number determine method under mutil-coal seam mining - Google Patents
Earth's surface damage range and disturbance number determine method under mutil-coal seam mining Download PDFInfo
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Abstract
The present invention relates to earth's surface damage ranges under mutil-coal seam mining and disturbance number to determine method, belongs to mining technique, land use and land reclamation field.This method includes：According to underground coal occurrence condition, utilize probability integration process, the analog prediction for dividing coal seam to carry out subsidence range, then according to seam mining plan, determine the final Subsidence Range of earth's surface under multiple seam repeated mining, exploitation is repeated to multiple seam simultaneously and divides different surface disturbance regions, and determines the number that different disturbance regions are disturbed.The present invention has considered subsidence range caused by each seam mining, mutil-coal seam mining influences the repetition of earth's surface, so that it is determined that earth's surface damage range and disturbance number under mutil-coal seam mining, it is easily understood, convenient for practical application, for follow-up mutil-coal seam mining depression land reclamation work provides the foundation information.
Description
Technical field
The invention belongs to mining technique, land use and land reclamation technical field, more particularly to multiple seam mining area repeats
Earth's surface damage range and the determination method of disturbance number under mining influence.
Background technology
Coal resources in China rich reserves, explored coal resources reserves are up to 1.48 trillion tons.Wherein, some areas
The coal seam number of plies is more, accumulation minable thickness is big, such as minable coal seam 9-18 layers of Anhui Province Huainan Mining Area, and accumulation minable thickness reaches 25-
34m；The mining areas such as Shandong Province Yanzhou, Jining minable coal seams is most of at 7-10 layers, minable coal seam overall thickness about 8-12m；Jiangsu Province
9 layers of Site in Xuzhou Mining Area Main workable coal seams, accumulation are adopted thick up to 15m.It is well known that China is coal production big country, according to《State in 2014
People's economy and social development statistical communique》Data show, annual China raw coal output is 38.7 hundred million tons within 2014, wherein 90% with
On coal production come from underground mine, and mostly use greatly move towards longwall all across fall method manage top plate, to be formed
Numerous subsidence land in coal mining area, according to related data, to the end of the year 2012, China's land area of depression due to coal mining is about 156
Ten thousand hectares, coal mine subsidence land work of reclaiming is extremely urgent.
With the increase of the continuous exploitation and mining depth of coal, mutil-coal seam mining is more universal.It is exploited with single coal bed
It compares, mutil-coal seam mining subsidence has the characteristics that many complexity, under mutil-coal seam mining, due to each ocurrence of coal seam situation difference,
Therefore subsidence range caused by different coal exploitation is also not quite similar, while earth's surface different zones are influenced number not by coal mining
Together, cause earth's surface damage situation complicated and changeable, be unfavorable for the progress of follow-up land reclamation work.Therefore, for mutil-coal seam mining,
Firstly the need of the delineation final damage range of earth's surface, determine different zones by disturbance number, could determine in advance needed for reclaim region,
Better accounting for follow-up Seam Mining influences, to the Reclamation Engineering of reasonable arrangement different zones.
Currently, having largely deep exploration for the ground damage etc. that single working face or single coal bed are exploited and grinding
Study carefully, and achieves great successes.But it is less for the final damage range of mutil-coal seam mining earth's surface and the research for disturbing number,
Under multiple seam repeated mining, the earth's surface seat of settlement and different zones how are determined by disturbance number, to be follow-up multiple
The selection of the determination and Secondary Reclamation Time of cultivating range provides basic information, reclaims to mutil-coal seam mining depression most important.
Invention content
The purpose of the present invention is to solve above-mentioned problem, propose earth's surface damage range and disturbance number under mutil-coal seam mining
It determines method, by land subsidence range under sunykatuib analysis mutil-coal seam mining, is influenced in combination with repeated mining, determine earth's surface most
Whole damage range and disturbance number, to provide basic information for follow-up mutil-coal seam mining land reclamation work.
Earth's surface damage range and disturbance number determine that method, this method are mainly applicable under mutil-coal seam mining proposed by the present invention
Coal seam is divided to carry out subsidence model using probability integration process in mutil-coal seam mining mining area, including according to underground coal occurrence condition
The analog prediction enclosed determines the final Subsidence Range of earth's surface under multiple seam repeated mining, while right then according to seam mining plan
Multiple seam repeats exploitation and divides different surface disturbance regions, and determines the number that different zones are disturbed.
This method specifically includes following steps：
1) coal seam is divided to carry out subsidence scope simulation estimated using probability integration process according to underground coal occurrence condition：
If the total n coal seam of production zone, and mining sequence be coal seam 1, coal seam 2 ..., coal seam i ..., coal seam n, utilize probability integration process
Estimated coal seam i exploitations cause the sinking of ground arbitrary point (x, y) respectively, and as shown in expression formula (1), then sinking is 10mm's
The isopleth of point delineation is the seat of settlement D of coal seam i exploitationsi, i=1,2,3 ..., i ... n.
In formula (1)：Wi(x, y) is the sinking that i exploitations in coal seam cause ground arbitrary point (x, y), unit mm；
qiFor the subsidence factor of coal seam i exploitations；The coal that mi is coal seam i is thick, unit mm；
αiFor the seam inclination of coal seam i, unit °；SiFor the production zone of coal seam i；
riFor the main radius of influence of coal seam i, unit m；I=1,2,3 ..., i ... n；
2) according to seam mining plan, the final Subsidence Range of earth's surface under multiple seam repeated mining is determined：According to seam mining
Divide coal seam subsidence coverage in plan and step 1), show that earth's surface is most under multiple seam repeated mining by space overlapping
The whole seat of settlement, then after m seam mining, the final Subsidence Range R of earth's surfacemAs shown in expression formula (2)：
In formula (1)：M=1,2,3 ..., m ... n；J=1,2,3 ..., j ... m；
3) exploitation is repeated to multiple seam and divides different surface disturbance regions：According to mutil-coal seam mining earth surface effects range,
After determining m seam mining, the different earth's surface disturbance region F of divisionkAs shown in expression formula (3)：
In formula (2)：M=1,2,3 ..., m ... n；K=1,2,3 ..., k ... m；
4) determine different earth's surface disturbance regions by disturbance number：According to mutil-coal seam mining earth surface effects feature, m coal is determined
After layer exploitation, surface disturbance region FkNumber T (the F disturbedk) as shown in expression formula (4)：
T(FK)=m+1-k (4)
In formula (3)：M=1,2,3 ..., m ... n；K=1,2,3 ..., k ... m.
The present invention mainly has following technological merit：
The present invention divides subsidence model caused by seam mining by using under Probability Integral Method To Predicate mutil-coal seam mining
It encloses, while considering multiple seam repeated mining feature, clearly divided different disturbance regions of the earth's surface by mining influence, and accurate
Ground determines the number that different zones are disturbed.This method is easily understood, and is convenient for practical application, is follow-up mutil-coal seam mining soil
Work of reclaiming provides the foundation information.
Description of the drawings
Fig. 1 is that earth's surface damage range and disturbance number determine method flow diagram under mutil-coal seam mining.
Fig. 2 is that (A-B indicates original ground, Si in figure for earth's surface damage range and disturbance number schematic diagram under mutil-coal seam mining
Indicate that working seam i (i=1,2 ..., n), curve Li indicate to cause surface subsidence basin range, region after coal seam i exploitations
Ri indicates the final seat of settlement of earth's surface after coal seam i exploitations).
Fig. 3 is embodiment earth's surface damage range and disturbance number schematic diagram.
Specific implementation mode
Earth's surface damage range and the determination method of disturbance number under mutil-coal seam mining proposed by the present invention, in conjunction with attached drawing and reality
Applying example, detailed description are as follows：
The method of the present invention is primarily adapted for use in mutil-coal seam mining mining area, including according to underground coal occurrence condition, using general
Rate integration method, the analog prediction for dividing coal seam to carry out subsidence range determine that multiple seam repeats then according to seam mining plan
The final Subsidence Range of lower earth's surface is adopted, while exploitation is repeated to multiple seam and divides different surface disturbance regions, and is determined different
The number that region is disturbed.
This method specifically includes following steps：
1) coal seam is divided to carry out subsidence scope simulation estimated using probability integration process according to underground coal occurrence condition：
If the total n coal seam of production zone, and mining sequence be coal seam 1, coal seam 2 ..., coal seam i ..., coal seam n, utilize probability integration process
Estimated coal seam i exploitations cause the sinking of ground arbitrary point (x, y) respectively, and as shown in expression formula (1), then sinking is 10mm's
The isopleth of point delineation is the seat of settlement D of coal seam i exploitationsi, i=1,2,3 ..., i ... n.
In formula (1)：Wi(x, y) is the sinking that i exploitations in coal seam cause ground arbitrary point (x, y), unit mm；
qiFor the subsidence factor of coal seam i exploitations；The coal that mi is coal seam i is thick, unit mm；
αiFor the seam inclination of coal seam i, unit °；SiFor the production zone of coal seam i；
riFor the main radius of influence of coal seam i, unit m；I=1,2,3 ..., i ... n；
2) according to seam mining plan, the final Subsidence Range of earth's surface under multiple seam repeated mining is determined：According to seam mining
Divide coal seam subsidence coverage in plan and step 1), show that earth's surface is most under multiple seam repeated mining by space overlapping
The whole seat of settlement, then after m seam mining, the final Subsidence Range R of earth's surfacemAs shown in expression formula (2)：
In formula (1)：M=1,2,3 ..., m ... n；J=1,2,3 ..., j ... m；
3) exploitation is repeated to multiple seam and divides different surface disturbance regions：According to mutil-coal seam mining earth surface effects range,
After determining m seam mining, the different earth's surface disturbance region F of divisionkAs shown in expression formula (3)：
In formula (2)：M=1,2,3 ..., m ... n；K=1,2,3 ..., k ... m；
4) determine different earth's surface disturbance regions by disturbance number：According to mutil-coal seam mining earth surface effects feature, m coal is determined
After layer exploitation, surface disturbance region FkNumber T (the F disturbedk) as shown in expression formula (4)：
T(FK)=m+1-k (4)
In formula (3)：M=1,2,3 ..., m ... n；K=1,2,3 ..., k ... m.
Embodiment：
The present embodiment is a certain high ground-water level Plain in east mining area, and ground even is open, and main in area there are four mine coals
Layer, respectively coal seam 1, coal seam 2, coal seam 3 and coal seam 4, this four coal seams, which are the whole district, to adopt, and simple in structure, wherein coal seam 1
Buried depth about 620m, average thickness 2.0m；Coal seam 2 buried depth about 680m, average thickness 2.5m；Coal seam 3 buried depth about 730m, it is average
Thickness is 2.0m, coal seam 4 buried depth about 770m, average thickness 3.0m.
The present embodiment earth's surface damage range and disturbance number in the case where computer software environment Imitating determines mutil-coal seam mining,
Its method flow is as shown in Figure 1, include the following steps：
1) coal seam is divided to carry out subsidence scope simulation estimated using probability integration process according to underground coal occurrence condition：
Production zone totally 4 coal seams, and mining sequence is coal seam 1, coal seam 2, coal seam 3, coal seam 4, utilizes probability integration process and electrometer
Calculation machine, which obtains coal output layer 1, coal seam 2, coal seam 3, coal seam 4 and exploits respectively, causes subsidence coverage to be D1=78hm2、D2=
95hm2、D3=113hm2、D4=133hm2。
3) exploitation is repeated to multiple seam and divides different surface disturbance regions：According to mutil-coal seam mining earth surface effects range,
After determining 4 seam minings, by the region F of different disturbance numbers1=R1=78hm2, F2=R2-R1=17hm2, F3=R3-
R2=18hm2, F4=R4-R3=20hm2。
4) determine different earth's surface disturbance regions by disturbance number：According to mutil-coal seam mining earth surface effects feature, 4 coals are determined
After layer exploitation, surface disturbance region F1、F2、F3、F4The number disturbed is respectively T (F1)=4+1-1=4, T (F2)=4+
1-2=3, T (F3)=4+1-3=2, T (F4)=4+1-4=1.This example subsidence range and disturbance number as shown in figure 3,
A-B indicates that original ground, S1, S2, S3, S4 indicate working seam 1, coal seam 2, coal seam 3 and coal seam 4 respectively in figure, curve L1,
L2, L3, L4 indicate that coal seam 1, coal seam 2, coal seam 3 and coal seam 4 cause surface subsidence basin range after exploiting, region R1, R2,
R3, R4 indicate the final seat of settlement of earth's surface after coal seam 1, coal seam 2, coal seam 3 and coal seam 4 are exploited respectively.
Claims (1)
1. earth's surface damage range and disturbance number determine method under a kind of mutil-coal seam mining, which is characterized in that this method includes：Root
According to underground coal occurrence condition, using probability integration process, the analog prediction for dividing coal seam to carry out subsidence range, then according to coal
Layer production program, determines the final Subsidence Range of earth's surface under multiple seam repeated mining, and be divided into difference by space overlapping
Surface disturbance region, be finally based on mutil-coal seam mining earth surface effects feature, using specific formulation determine different disturbance regions by
Exploit the number of disturbance；
This method specifically includes following steps：
1) coal seam is divided to carry out subsidence scope simulation estimated using probability integration process according to underground coal occurrence condition：If opening
The total n coal seam in exploiting field domain, and mining sequence be coal seam 1, coal seam 2 ..., coal seam i ..., coal seam n, earth axes x, o, y,
It is ε that coal seam i, which is projected as the coordinate system after horizontal seam,i、o、ηi, and the floor projection of coordinate system overlaps, and utilizes probability integration process point
It Yu Ji not coal seam i production zones SiThe sinking for causing ground arbitrary point (x, y), as shown in formula (1), then sinking is 10mm's
The isopleth of point delineation is the seat of settlement D of coal seam i exploitationsi, i=1,2 ..., n；
In formula (1)：Wi(x, y) is the sinking that i exploitations in coal seam cause ground arbitrary point (x, y), unit mm；
qiFor the subsidence factor of coal seam i exploitations；miThick, the unit mm for the coal of coal seam i；
αiFor the seam inclination of coal seam i, unit °；
riFor the main radius of influence of coal seam i, unit m；I=1,2 ..., n；
2) according to seam mining plan, the final Subsidence Range of earth's surface under multiple seam repeated mining is determined：According to seam mining plan,
With divide coal seam subsidence coverage in step 1), the final depression of earth's surface under multiple seam repeated mining is obtained by space overlapping
Coverage, then after m seam mining, the final Subsidence Range R of earth's surfacemAs shown in formula (2)：
In formula (2)：M=1,2 ..., n；J=1,2 ..., m；
3) exploitation is repeated to multiple seam and divides different surface disturbance regions：According to mutil-coal seam mining earth surface effects range, m is determined
After a seam mining, the different earth's surface disturbance region F of divisionkAs shown in formula (3)：
In formula (3)：M=1,2 ..., n；K=1,2 ..., m；
4) determine different earth's surface disturbance regions by disturbance number：According to mutil-coal seam mining earth surface effects feature, determine that m coal seam is opened
After adopting, surface disturbance region FkNumber T (the F disturbedk) as shown in formula (4)：
T(FK)=m+1-k formulas (4)
In formula (4)：M=1,2 ..., n；K=1,2 ..., m.
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| CN111781597B (en) * | 2020-07-07 | 2023-07-07 | 太原理工大学 | Remote sensing quantification method for surface disturbance by coal face underground mining |
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| CN103541376A (en) * | 2013-10-10 | 2014-01-29 | 金川集团股份有限公司 | Foundation deformation prediction method for coal mining subsidence area foundation under condition of repeated mining |
| CN103628876A (en) * | 2013-11-06 | 2014-03-12 | 中国矿业大学(北京) | Harmonious mining method for block-type dip stripes in deep spanned mining areas of steep inclined seam |
| CN104239680A (en) * | 2014-07-16 | 2014-12-24 | 广州日滨科技发展有限公司 | Display method and system of coal-seam distribution |
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