CN107526920A - Method for analyzing corresponding relation between new surface subsidence dynamic process and overlying strata abscission layer development - Google Patents
Method for analyzing corresponding relation between new surface subsidence dynamic process and overlying strata abscission layer development Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000011161 development Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 28
- 230000018109 developmental process Effects 0.000 title abstract 7
- 230000006578 abscission Effects 0.000 title abstract 4
- 238000000926 separation method Methods 0.000 claims abstract description 30
- 230000007423 decrease Effects 0.000 claims abstract description 14
- 230000000977 initiatory effect Effects 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 23
- 238000004458 analytical method Methods 0.000 claims description 16
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 5
- 238000013139 quantization Methods 0.000 claims description 4
- 238000007619 statistical method Methods 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 3
- 238000012821 model calculation Methods 0.000 claims description 3
- 229910052655 plagioclase feldspar Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
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Abstract
The invention discloses a method for analyzing the corresponding relation between a new surface subsidence dynamic process and overburden abscission layer development, which comprises the steps of measuring a sticking measuring point on a model overburden section to obtain the time process of abscission layer from cracking to expanding to closing and quantitative development indexes of the length and the width of the abscission layer; arranging a subsidence measuring point on the model ground surface, and measuring the whole process data of the ground surface subsidence gradually developing from zero to the maximum value at the same time with the separation layer; and obtaining a time schedule by a model test, displaying the dynamic growth data of the surface subsidence and the dynamic development data of the overburden bed separation, statistically analyzing the corresponding relation of the dynamic growth data and the dynamic development data of the overburden bed separation, finding the corresponding relation of the initial period, the active period and the decline period of the surface subsidence and the initiation, development and closing time points of the bed separation, and newly proposing and dividing bed separation time nodes and each development stage. The characteristic of breaking the overburden separation layer can be more clearly reflected by indirectly obtaining data when the physical model and the digital model are used.
Description
Technical field
The present invention relates to surface subsidence dynamic process and overlying strata separation layer technical field, specially a kind of new surface subsidence dynamic
Process and overlying strata separation layer development corresponding relation analysis method.
Background technology
During coal mine underground is exploited, with the passage of underground mining working face, the spontaneous combustion stress of overlying strata body is destroyed
Poised state, due to the effect of the secondary stress field of redistribution, the stress inside rock stratum also divides goaf overlying rock again
Cloth is to reach new balance.Fracture, inbreak, bending and sinking will occur for overlying rock, and this motion change is from bottom to top progressively
Development, forms subsidence, overlying rock apart from the difference of mined out zone position, thickness etc., and is caused due to lithology to earth's surface
The motion of rock stratum is not that Complete Synchronization is consistent, and so as to displacement difference of the overlying strata motion on vertical occur, it is empty to form absciss layer
Between.
The Production conditions of overlying strata separation layer：The absciss layer of rock stratum refers to generate Normal Displacement between two adjacent rock stratum, and it is produced
Condition depends primarily on, the bending rigidity of lower rock stratum, when the bending rigidity of upper rock stratum is more than the next rock stratum, then can produce
Absciss layer, and the bending rigidity of rock stratum depends on the bullet mould and thickness of rock stratum.
The content of the invention
It is an object of the invention to provide a kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis
Method.
To achieve the above object, the present invention provides following technical scheme：The measurement that measuring point is pasted in model overlying strata section obtains
Absciss layer by crack initiation, expand to the time course of closure and its quantization development indicators of absciss layer length and width；
Sinking measuring point is installed in model earth's surface, surface subsidence is measured in the same time with absciss layer and progressively develops into maximum from zero
Overall process data；
Time schedule is drawn by model test, exhibition row surface subsidence dynamic increases data and overlying strata separation layer active development number
According to, the corresponding relation of both statistical analyses, initial period, active period and the decline phase of surface subsidence and the crack initiation of absciss layer, hair are found
Exhibition and the corresponding relation of closing time point, propose from new and divide absciss layer timing node and develop each stage.
A kind of above-mentioned new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, are cutd open with model overlying strata
The measurement that measuring point is pasted in face is analyzed, and overlying strata main key stratum is when it is 30-40m that working face, which adopts hole depth, surface subsidence speed
Most fast, its subsidence velocity reaches 7.5mm/d, it can be seen that, earth's surface maximum subsidence velocity is synchronous with key stratum maximum subsidence velocity,
The first breaking of key stratum result in the quick sinking of earth's surface,
Calculation formula is：
DW (t)/dt=c [W (t)/(1-1-e-ct)-Wk(1-1-e-ct)]
W (t) is a certain moment Dynamic Subsidence value
WkFor earth's surface final subsidence value
1-e-ctTo obtain variable quantity in certain time
DW (t)/dt is surface subsidence speed, as W (t)/(1-1-e-ct)-Wk(1-1-e-ct) value be more than 0 when surface subsidence
Speed can be accelerated, as W (t)/(1-1-e-ct)-Wk(1-1-e-ct) value be less than 0 when earth's surface decrease speed can reduce, but due to by
The condition limitation of plagioclase and length into model so that the numerical value and actual numerical value drawn has certain deviation.
Preferably, a kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, pass through
The parameter setting at joint between key stratum block is obtained very big, make not producing motion between block, broken with this to simulate key stratum rock mass
Moved before disconnected, when adopting width and reaching key stratum broken mechanics, reduce block joint parameters, moved after simulation key stratum is disrumpent feelings, overlying strata
Key stratum obtains the disrumpent feelings surface subsidence that will influence and obtains dynamic process,
Calculation formula is：
W (t)=W0+Δω(1-ae-kt)
W (t) is a certain moment Dynamic Subsidence value
W0The largest amount of subsidence of earth's surface at the end of for the decline phase
ΔωTerminate the remaining sinking of rear earth's surface for the decline phase
Due to W0For solid value, the amount that W (t) sinks is relevant with a, k and t, works as 1-ae-ktDuring more than 0, W (t) sinkings can add
Greatly, 1-ae is worked as-ktDuring less than 0, W (t) sinkings can slow down, and the disrumpent feelings of key strata of covering rock will cause the obvious of surface subsidence speed
Increase is in not cyclically-varying.
Preferably, a kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, are carried out
Simulation is excavated in coal seam according to irregular depth, after each excavate model calculation to starting again in next step after steady
Excavate, when depth is advanced into 150m, key stratum occurs first breaking, first time periodic failure and second of cycle and broken respectively
Disconnected, before key stratum is disrumpent feelings, surface subsidence increment is smaller, and after key stratum is disrumpent feelings, surface subsidence increment can increase, and earth's surface
Moving influence angle and moving influence border are not unalterable,
Calculation formula is：
W (x, y, t)=Wm(1-x2/a2-y2/b2)(1-e-ct)k
W (x, y, t) is subsidence basin any point deflection at any time
1-e-ctTo obtain variable quantity in certain time
(1-x2/a2-y2/b2)(1-e-ct)kWhen product is positive number, W (x, y, t) deflection can increase, (1-x2/a2-y2/b2)
(1-e-ct)kWhen product is negative, W (x, y, t) deflection be able to can slow down, and with a and b increasing, surface subsidence influences border will
It is obvious to expand.
Compared with prior art, beneficial effects of the present invention are：Disrumpent feelings due to key strata of covering rock will cause surface subsidence
Speed significantly increase, therefore can will ensure the principle that be designed as coal mining underbuildings of the not disrumpent feelings unstability of key strata of covering rock, be
Guarantee coal mining underbuildings both has a preferable economic benefit, while also ensures that above ground structure does not suffer damage, and research is closed
Key is to determine reasonably to subtract heavy production technique and parameter according to sand coated iron mold under actual conditions and key stratum feature.
Brief description of the drawings
Fig. 1 develops settling velocity under corresponding relation analysis method for a kind of new surface subsidence dynamic process of the present invention with overlying strata separation layer
Degree and ground distance meander line structure schematic diagram；
Fig. 2 develops corresponding relation analysis method rock stratum power for a kind of new surface subsidence dynamic process of the present invention and overlying strata separation layer
Learn parameter table schematic diagram；
Fig. 3 develops in corresponding relation analysis method for a kind of new surface subsidence dynamic process of the present invention with overlying strata separation layer adopts width
Angle form schematic diagram is influenceed with surface movement.
Embodiment
The present invention provides a kind of technical scheme：The measurement that measuring point is pasted in model overlying strata section obtains absciss layer by crack initiation, expansion
Open up the time course of closure and its quantization development indicators of absciss layer length and width；
Sinking measuring point is installed in model earth's surface, surface subsidence is measured in the same time with absciss layer and progressively develops into maximum from zero
Overall process data；
Time schedule is drawn by model test, exhibition row surface subsidence dynamic increases data and overlying strata separation layer active development number
According to, the corresponding relation of both statistical analyses, initial period, active period and the decline phase of surface subsidence and the crack initiation of absciss layer, hair are found
Exhibition and the corresponding relation of closing time point, propose from new and divide absciss layer timing node and develop each stage.
A kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, are sticked with model overlying strata section
The measurement of patch measuring point is analyzed, and for overlying strata main key stratum when it is 30-40m that working face, which adopts hole depth, surface subsidence is fastest,
Its subsidence velocity reaches 7.5mm/d, it can be seen that, earth's surface maximum subsidence velocity is synchronous with key stratum maximum subsidence velocity, crucial
The first breaking of layer result in the quick sinking of earth's surface,
Calculation formula is：
DW (t)/dt=c [W (t)/(1-1-e-ct)-Wk(1-1-e-ct)]
W (t) is a certain moment Dynamic Subsidence value
WkFor earth's surface final subsidence value
1-e-ctTo obtain variable quantity in certain time
DW (t)/dt is surface subsidence speed, as W (t)/(1-1-e-ct)-Wk(1-1-e-ct) value be more than 0 when surface subsidence
Speed can be accelerated, as W (t)/(1-1-e-ct)-Wk(1-1-e-ct) value be less than 0 when earth's surface decrease speed can reduce, but due to by
The condition limitation of plagioclase and length into model so that the numerical value and actual numerical value drawn has certain deviation.
A kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, by by key stratum block
Between the parameter setting at joint obtain very big, make not producing motion between block, with this come simulate key stratum rock mass it is disrumpent feelings before move, when adopting
When width reaches key stratum broken mechanics, reduce block joint parameters, simulation key stratum it is disrumpent feelings after move, key strata of covering rock obtain it is disrumpent feelings will
Influence surface subsidence and obtain dynamic process,
Calculation formula is：
W (t)=W0+Δω(1-ae-kt)
W (t) is a certain moment Dynamic Subsidence value
W0The largest amount of subsidence of earth's surface at the end of for the decline phase
ΔωTerminate the remaining sinking of rear earth's surface for the decline phase
Due to W0For solid value, the amount that W (t) sinks is relevant with a, k and t, works as 1-ae-ktDuring more than 0, W (t) sinkings can add
Greatly, 1-ae is worked as-ktDuring less than 0, W (t) sinkings can slow down, and the disrumpent feelings of key strata of covering rock will cause the obvious of surface subsidence speed
Increase is in not cyclically-varying.
A kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, carry out in simulation coal seam by
Excavated according to irregular depth, after each excavate model calculation to starting to excavate in next step again after steady, work as depth
When being advanced into 150m, it is disrumpent feelings that first breaking, first time periodic failure and second of periodic failure, key stratum occur respectively for key stratum
Before, surface subsidence increment is smaller, and after key stratum is disrumpent feelings, and surface subsidence increment can increase, and surface movement influence angle and
Moving influence border is not unalterable,
Calculation formula is：
W (x, y, t)=Wm(1-x2/a2-y2/b2)(1-e-ct)k
W (x, y, t) is subsidence basin any point deflection at any time
1-e-ctTo obtain variable quantity in certain time
(1-x2/a2-y2/b2)(1-e-ct)kWhen product is positive number, W (x, y, t) deflection can increase, (1-x2/a2-y2/b2)
(1-e-ct)kWhen product is negative, W (x, y, t) deflection be able to can slow down, and with a and b increasing, surface subsidence influences border will
It is obvious to expand.
On analog simulation test model, the measurement that measuring point is pasted by model overlying strata section obtains absciss layer by crack initiation, expansion
Open up the time course of closure and its quantization development indicators of absciss layer length and width；Meanwhile sinking measuring point is installed in model earth's surface,
Surface subsidence is measured in the same time with absciss layer from the zero overall process data for progressively developing into maximum.Row ground is opened up according to time schedule
Table, which sinks, dynamically increases data and overlying strata separation layer active development data, the corresponding relation of both statistical analyses, finds surface subsidence
Initial period, active period and decline phase and the crack initiation of absciss layer, the corresponding relation of development and closing time point, count each period absciss layer
To the contribution rate of surface subsidence, propose from new and divide absciss layer timing node and develop each stage；According to experiment similarity criterion
Surface subsidence on the spot is converted into developing corresponding relation with overlying strata separation layer, provides overlying strata separation layer grouting control surface subsidence most
Good time standard.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, although with reference to foregoing reality
Apply example the present invention is described in detail, for those skilled in the art, it still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic.All essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (4)
1. a kind of new surface subsidence dynamic process and overlying strata separation layer development corresponding relation analysis method, it is characterised in that：
Model overlying strata section paste measuring point measurement obtain absciss layer by crack initiation, expand to the time course and its absciss layer of closure
The quantization development indicators of length and width；
Sinking measuring point is installed in model earth's surface, surface subsidence is measured in the same time with absciss layer and progressively develops into the complete of maximum from zero
Process data；
Time schedule is drawn by model test, exhibition row surface subsidence dynamic increases data and overlying strata separation layer active development data,
The corresponding relation of both statistical analyses, find initial period, active period and the decline phase of surface subsidence and the crack initiation of absciss layer, development and
The corresponding relation of closing time point, propose from new and divide absciss layer timing node and develop each stage.
2. a kind of new surface subsidence dynamic process according to claim 1 and overlying strata separation layer development corresponding relation analysis side
Method, it is characterised in that：
The measurement that measuring point is pasted with model overlying strata section is analyzed, and it is 30-40m that overlying strata main key stratum adopts hole depth in working face
When, surface subsidence is fastest, and its subsidence velocity reaches 7.5mm/d, it can be seen that, earth's surface maximum subsidence velocity and key stratum are most
Rapid sink rate is synchronous, and the first breaking of key stratum result in the quick sinking of earth's surface,
Calculation formula is：
DW (t)/dt=c [W (t)/(1-1-e-ct)-Wk(1-1-e-ct)]
W (t) is a certain moment Dynamic Subsidence value
WkFor earth's surface final subsidence value
1-e-ctTo obtain variable quantity in certain time
DW (t)/dt is surface subsidence speed, as W (t)/(1-1-e-ct)-Wk(1-1-e-ct) value be more than 0 when surface subsidence speed meeting
Accelerate, as W (t)/(1-1-e-ct)-Wk(1-1-e-ct) value when being less than 0 earth's surface decrease speed can reduce, but due to by model
In plagioclase and length condition limitation so that the numerical value and actual numerical value drawn has certain deviation.
3. a kind of new surface subsidence dynamic process according to claim 1 and overlying strata separation layer development corresponding relation analysis side
Method, it is characterised in that：
It is very big by the way that the parameter setting at joint between key stratum block is obtained, make not produce motion between block, key is simulated with this
Moved before layer rock mass is disrumpent feelings, when adopting width and reaching key stratum broken mechanics, reduce block joint parameters, transported after simulation key stratum is disrumpent feelings
Dynamic, key strata of covering rock obtains the disrumpent feelings surface subsidence that will influence and obtains dynamic process,
Calculation formula is：
W (t)=W0+Δω(1-ae-kt)
W (t) is a certain moment Dynamic Subsidence value
W0The largest amount of subsidence of earth's surface at the end of for the decline phase
ΔωTerminate the remaining sinking of rear earth's surface for the decline phase
Due to W0For solid value, the amount that W (t) sinks is relevant with a, k and t, works as 1-ae-ktDuring more than 0, W (t) sinkings can increase, when
1-ae-ktDuring less than 0, W (t) sinkings can slow down, and the disrumpent feelings of key strata of covering rock will cause significantly increasing simultaneously for surface subsidence speed
Non- is in cyclically-varying.
4. a kind of new surface subsidence dynamic process according to claim 1 and overlying strata separation layer development corresponding relation analysis side
Method, it is characterised in that：
Excavated in simulation coal seam according to irregular depth, after each excavate model calculation to opening again after steady
Begin to excavate in next step, when depth is advanced into 150m, first breaking, first time periodic failure and second occur respectively for key stratum
Periodic failure, before key stratum is disrumpent feelings, surface subsidence increment is smaller, and after key stratum is disrumpent feelings, surface subsidence increment can increase, and
And surface movement influences angle and moving influence border is not unalterable,
Calculation formula is：
W (x, y, t)=Wm(1-x2/a2-y2/b2)(1-e-ct)k
W (x, y, t) is subsidence basin any point deflection at any time
1-e-ctTo obtain variable quantity in certain time
(1-x2/a2-y2/b2)(1-e-ct)kWhen product is positive number, W (x, y, t) deflection can increase, (1-x2/a2-y2/b2)(1-e-ct)kWhen product is negative, W (x, y, t) deflection be able to can slow down, and with a and b increasing, surface subsidence influences border will be obvious
Expand.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216236A (en) * | 2013-03-13 | 2013-07-24 | 中国矿业大学(北京) | Method for reducing subsidence of stope overburden bed separation by grouting |
| CN103558646A (en) * | 2013-10-31 | 2014-02-05 | 中国矿业大学 | Method of detecting dynamic developmental situation of overburden mining-induce fissure in radon gas earth surface |
| CN105067294A (en) * | 2015-07-17 | 2015-11-18 | 青岛理工大学 | Mining overburden bed separation different-speed growth test monitoring system and analysis method |
| CN106772678A (en) * | 2016-12-16 | 2017-05-31 | 安徽理工大学 | A kind of wellhole many reference amounts method for surveying of rock deformation destructive characteristics |
| CN106884657A (en) * | 2017-03-31 | 2017-06-23 | 青岛理工大学 | Method for displaying surface subsidence dynamic process based on overburden bed separation dynamic development |
-
2017
- 2017-07-19 CN CN201710590471.6A patent/CN107526920B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216236A (en) * | 2013-03-13 | 2013-07-24 | 中国矿业大学(北京) | Method for reducing subsidence of stope overburden bed separation by grouting |
| CN103558646A (en) * | 2013-10-31 | 2014-02-05 | 中国矿业大学 | Method of detecting dynamic developmental situation of overburden mining-induce fissure in radon gas earth surface |
| CN105067294A (en) * | 2015-07-17 | 2015-11-18 | 青岛理工大学 | Mining overburden bed separation different-speed growth test monitoring system and analysis method |
| CN106772678A (en) * | 2016-12-16 | 2017-05-31 | 安徽理工大学 | A kind of wellhole many reference amounts method for surveying of rock deformation destructive characteristics |
| CN106884657A (en) * | 2017-03-31 | 2017-06-23 | 青岛理工大学 | Method for displaying surface subsidence dynamic process based on overburden bed separation dynamic development |
Non-Patent Citations (1)
| Title |
|---|
| 胡晓阳: "基于异速生长理论的采动覆岩离层时空分布规律与沉陷模型研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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