CN106093341B - The experimental provision and method of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata - Google Patents
The experimental provision and method of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata Download PDFInfo
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- 238000005553 drilling Methods 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title abstract description 6
- 239000003245 coal Substances 0.000 claims abstract description 158
- 238000004088 simulation Methods 0.000 claims abstract description 149
- 238000005065 mining Methods 0.000 claims abstract description 36
- 239000000084 colloidal system Substances 0.000 claims abstract description 18
- 230000006378 damage Effects 0.000 claims abstract description 5
- 238000007634 remodeling Methods 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 claims description 60
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 58
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 29
- 239000010440 gypsum Substances 0.000 claims description 29
- 229910052602 gypsum Inorganic materials 0.000 claims description 29
- 238000013508 migration Methods 0.000 claims description 29
- 230000005012 migration Effects 0.000 claims description 29
- 230000015572 biosynthetic process Effects 0.000 claims description 27
- 239000004576 sand Substances 0.000 claims description 21
- 238000002474 experimental method Methods 0.000 claims description 20
- 210000001072 colon Anatomy 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910001868 water Inorganic materials 0.000 claims description 10
- 239000004816 latex Substances 0.000 claims description 8
- 229920000126 latex Polymers 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 238000011161 development Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002817 coal dust Substances 0.000 claims description 3
- 238000004040 coloring Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 6
- 238000011160 research Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 by proportioning Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The experimental provision and method of a kind of disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata, overlying strata disrumpent feelings rule inverting when being mined for being simulated in laboratory.When simulating single coal bed mining conditions, the prefabricated multiple simulation surface drillings of pvc pipe are utilized when laying model, current intelligence is destroyed using mini-drill endoscope to the hole wall changing of the relative positions for simulating surface drilling to be observed, while record the disrumpent feelings motion conditions of overlying strata in working seam；When simulating coal seam group mining condition, need to have adopted the destruction hole wall of coal seam overlying strata drilling with filling colloid remodeling before coal seam under exploitation, to simulate drilling sliding deformation situation under the conditions of repeated mining.Easy to use, cost is low, and simulation effect is good.
Description
Technical field
The present invention relates to a kind of experimental provision and method, and be particularly suitable for use in the base simulated in a kind of laboratory and used when mining
In the disrumpent feelings migration rule inverting experimental provision of the overlying strata of surface drilling sliding deformation and method.
Background technology
It is well known that can cause the deformation, destruction and movement of overlying rock after seam mining, progressively development is straight from bottom to top
To earth's surface, roof caving is caused, a series of problems, such as cranny development, methane accumulation, water inrush accident, surface drainage destroy, directly
Connecing influences mine safety production and surface environment.It can be said that the overlying strata motion after exploitation not only produces weight to mine pressure
It is big to influence, and basis the problems such as research subsidence, mine groundwater, gas control and earth's surface ecological protection.Therefore, it is accurate
Really judge that the disrumpent feelings migration rule of overlying strata has great importance for mine safety production and ecology of mining areas protection.
At present, using borehole television panoramic shooting system, field observation is carried out to surface drilling, directly can effectively be slapped
Hold the surface drilling changing of the relative positions and destroy dynamic change.But by mining influence, scene drilling easily occurs plug-hole, causes borehole television equipment
It can not transfer, the changing of the relative positions that drilled below plug-hole height destroys situation and can not observed.And grasp comprehensively the drilling changing of the relative positions destroy situation can be with
Inverting overlying strata are disrumpent feelings migration rule, it is therefore necessary to which a kind of experimental method analog study surface drilling sliding deformation and overlying strata are set
Relation between disrumpent feelings migration, another implementation is provided for the disrumpent feelings migration rule inverting of overlying strata, so as to be coal mine gas
The research such as improvement and ground water protection provides theoretical foundation.
The content of the invention
Technical problem：The present invention is directed to the weak point of prior art, there is provided a kind of easy to use, cost is low, simulation effect
Migration rule inverting experimental method that the good overlying strata based on surface drilling sliding deformation of fruit are disrumpent feelings.
Technical scheme：To realize above-mentioned technical purpose, the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata of the invention
Experimental provision, including both sides panel can be covered with multilayer simulation coal with the simulation box and video monitoring apparatus of folding in simulation box
Rock stratum, the coal rock layer include being layered on the simulation coal seam of simulation box bottom, simulation rock stratum are provided with above simulation coal seam, simulates coal seam
Experiment needs to lay, and the top is provided with simulation unconsolidated formation；
The coal rock layer upper vertical to have multiple depth until simulation box it is undermost simulation coal seam at be used for mould
Intend the conduit of structure surface drilling；
The video monitoring apparatus includes mini-drill endoscope and passes through the connected host computer of circuit.
After the simulation coal seam and simulation rock stratum are well mixed by sand, calcium carbonate, gypsum plus water stirring is made, wherein mould
Intending rock stratum includes simulation incompetent bed and simulation hard formation.
Sand, calcium carbonate, gypsum and the water quality ratio that the simulation coal seam and simulation rock stratum use are 7:1~9:1；Simulation
Sand, calcium carbonate, the gypsum quality in coal seam are matched by analog simulation with colon 773, and add coal dust coloring；Rock stratum is simulated by sand
Son, calcium carbonate, gypsum quality, with the proportioning simulation incompetent bed of colon 573, are pressed by analog simulation by sand, calcium carbonate, gypsum quality
Simulation hard formation is matched with colon 337；Sand, calcium carbonate, the gypsum quality of simulation unconsolidated formation are matched somebody with somebody by analog simulation with colon 773
Than；
When carrying out the disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under single coal bed mining conditions
It is single coal bed condition Imitating coal seam to simulate coal seam during experiment, in the coal rock layer in simulation box, and is arranged on bottommost, single
One coal seam conditions Imitating coal seam is provided with multilayer simulation rock stratum；
Now conduit uses a diameter of 3cm pvc pipe, and the pvc pipe depth of burying is until single coal bed condition Imitating coal seam
Place, the length of pvc pipe are advisable with exposure simulation unconsolidated formation top interface 5cm, and hole heart position is located at model width center；
The disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under the conditions of coal seam group mining is carried out is real
It is respectively to be located at coal seam under the simulation of bottom that coal seam is simulated when testing, in the coal rock layer in simulation box, simulates lower coal seam and is provided with mould
Intend rock stratum, simulation rock stratum is provided with the upper coal seam of simulation；Now conduit uses a diameter of 3cm small-bore pvc pipe, small-bore PVC
A diameter of 5cm large aperture pvc pipe is buried on the outside of pipe, small-bore pvc pipe and large aperture pvc pipe are arranged in concentric circles state, greatly
The length of aperture pvc pipe should be bigger 5cm than upper coal seam buried depth, and small-bore pvc pipe length is bigger 5cm than lower coal seam buried depth.
Migration rule inverting experimental method that a kind of overlying strata based on surface drilling sliding deformation are disrumpent feelings, its step are as follows：
A. using sand, calcium carbonate, gypsum and water, by proportioning, coal seam, simulation rock are simulated in the laying from bottom to top in simulation box
Layer and simulation unconsolidated formation form simulation coal rock layer, during laying simulation rock stratum and simulation unconsolidated formation, bury insertion simulation box
The conduit in bottom analog coal seam, the top exposure simulation unconsolidated formation of conduit；
B. after waiting the drying of coal rock layer model forming, dismounting simulation box both sides panel, the coal rock layer by conduit from shaping
Simulation surface drilling is formed after being extracted out in model, is 1 according to situ time similar proportion:10th, size similar proportion is 1:100
Similar proportion, stay set certain border coal pillar mining simulation coal seam from left to right, exploitation rate is every 15 minutes 5cm；
C. during simulation working face mining coal seam, often exploit once, just peeped using the mini-drill with scale
Surface drilling is deeply simulated depending on instrument, and the hole wall changing of the relative positions to simulating surface drilling destroys current intelligence and is observed collection, gathers
Simulate surface drilling hole wall and the altitude range of the changing of the relative positions, changing of the relative positions amount size occurs；Meanwhile the disrumpent feelings motion conditions of overlying strata are remembered
Record, including overburden rock damage, cranny development scope；
When carrying out the disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under single coal bed mining conditions
During experiment, for simulation single coal bed condition Imitating surface drilling, the conduit used is the simulation surface drilling in the step a
Diameter 3cm pvc pipe, the length of pvc pipe are advisable with exposure simulation unconsolidated formation top interface 5cm.
The disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under the conditions of coal seam group mining is carried out is real
When testing, described simulation surface drilling is coal seam group condition Imitating surface drilling, and the conduit used is combination tubular construction, described
Combination tubular construction includes being vertically arranged the length small-bore pvc pipe bigger 5cm a diameter of 3cm than lower coal seam buried depth, small-bore pvc pipe
Outer concentric justifies the large aperture pvc pipe for being disposed with a diameter of 5cm, and the length of large aperture pvc pipe should be bigger 5cm than upper coal seam buried depth；
The disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under the conditions of coal seam group mining is carried out is real
Step c when testing is：
After upper coal seam has been adopted, because the coal seam group condition Imitating surface drilling of upper coal seam to ground table segment is produced by mining influence
The raw changing of the relative positions and rupture, to avoid its influence to the observation that drilled under the conditions of repeated mining, using filling colloid remodeling the wall of a borehole：
First, inserted with a diameter of 3cm small-bore pvc pipe from earth's surface at the top of lower coal seam, using syringe in upper coal seam
Injection filling colloid between mining overburden respective apertures footpath pvc pipe and hole wall, until filling colloid is full of between pvc pipe and hole wall
Space；
Secondly, the cementing shaping of colloid to be filled is waited, pvc pipe is extracted, so that passing through small-bore pvc pipe and large aperture
The up big and down small drilling reparation that pvc pipe simulation is formed all is 3cm, pore size and lower coal bed drilling aperture phase for upper and lower pitch-row
Together, remold the wall of a borehole and require smooth complete, without obvious crack, do not influence secondary observation；
The filling colloid is well mixed stirring by calcium carbonate, gypsum and latex and is made, and calcium carbonate, gypsum, latex are pressed
10g：10g：3ml ratios mix.
Beneficial effect：Overlying strata disrumpent feelings migration rule inverting experimental method of the invention based on surface drilling sliding deformation, gram
Take existing research method and be difficult to the obtained drilling changing of the relative positions of actual measurement and destroy situation to carry out the disrumpent feelings migration rule inverting research of overlying strata
Problem.It is different according to condition of coal seam occurrence, enter for two kinds of situations under the conditions of single coal bed mining conditions and coal seam group mining
Row simulated experiment, it can be drilled with analog study and be drilled under different exploitation condition between sliding deformation and the disrumpent feelings migration rule of overlying strata
Contact.According to working face and the difference of drilling relative position, the hole wall using mini-drill endoscope to simulation surface drilling
The changing of the relative positions destroys current intelligence and is observed, while records the disrumpent feelings motion conditions of overlying strata, can grasp drilling sliding deformation with covering
Relation between migration that rock is disrumpent feelings, foundation is provided for the disrumpent feelings migration rule of inverting overlying strata, given birth to for mine safety production and mining area
State protection has great importance.
Brief description of the drawings
Fig. 1 is the experimental provision structural representation under the conditions of single coal bed of the present invention；
Fig. 2 is the surface drilling observation schematic diagram under the conditions of single coal bed of the present invention；
Fig. 3 is the experimental provision structural representation under the conditions of coal seam group of the present invention；
Fig. 4 is the use filling colloid remodeling hole wall schematic diagram under the conditions of coal seam group of the present invention.
In figure：1- simulation boxes；2- single coal bed condition Imitatings coal seam；3- simulates rock stratum；4- simulates unconsolidated formation；5-PVC
Pipe；6- single coal bed condition Imitating surface drillings；7- mini-drill endoscopes；8- simulates working face；The lower coal seam of 9- simulations；
Coal seam in 10- simulations；11- small-bores pvc pipe；12- large apertures pvc pipe；13- coal seam group condition Imitating surface drillings；14- fills
Filler body；15- syringes.
Embodiment
1 embodiment of the present invention is further described below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, the experimental provision of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata of the invention, it
Multilayer simulation coal rock layer can be covered with the simulation box 1 and video monitoring apparatus of folding in simulation box 1 including both sides panel, it is described
Coal rock layer includes being layered on the simulation coal seam of the bottom of simulation box 1, and simulation rock stratum 3 is provided with above simulation coal seam, and the experiment of simulation coal seam needs
Lay, the top is provided with simulation unconsolidated formation 4, and the simulation coal seam and simulation rock stratum 3 are mixed equal by sand, calcium carbonate, gypsum
After even plus water stirring is made, wherein simulation rock stratum 3 includes simulation incompetent bed and simulation hard formation, the simulation coal seam and simulation rock
Sand, calcium carbonate, gypsum and the water quality ratio that layer 3 uses are 7:1~9:1；Simulate sand, calcium carbonate, the gypsum quality in coal seam
Matched by analog simulation with colon 773, and add coal dust coloring；Rock stratum 3 is simulated by sand, calcium carbonate, gypsum quality by similar
Simulation matches simulation hard formation by sand, calcium carbonate, gypsum quality with the proportioning simulation incompetent bed of colon 573 by with colon 337；
Sand, calcium carbonate, the gypsum quality of simulation unconsolidated formation 4 are matched by analog simulation with colon 773；
The coal rock layer upper vertical to have multiple depth until simulation box 1 it is undermost simulation coal seam at be used for mould
Intend the conduit of structure surface drilling；
The video monitoring apparatus includes mini-drill endoscope 7 and passes through the connected host computer of circuit.
When carrying out the disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under single coal bed mining conditions
It is single coal bed condition Imitating coal seam 2 to simulate coal seam during experiment, in the coal rock layer in simulation box 1, and is arranged on simulation box 1
Bottommost, single coal bed condition Imitating coal seam 2 are provided with multilayer simulation rock stratum 3；Now the conduit is using a diameter of 3cm's
Pvc pipe 5, for the depth of burying of pvc pipe 5 until at single coal bed condition Imitating coal seam 2, the length of pvc pipe 5 is loose with exposure simulation
Layer 4, which pushes up interface 5cm, to be advisable, and hole heart position is located at model width center.
The disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under the conditions of coal seam group mining is carried out is real
It is respectively to be located at coal seam 9 under the simulation of bottom that coal seam is simulated when testing, in the coal rock layer in simulation box 1, simulates lower coal seam 9 and is provided with
Rock stratum 3 is simulated, simulation rock stratum 3 is provided with the upper coal seam 10 of simulation；Now conduit uses a diameter of 3cm small-bore pvc pipe 11, small
A diameter of 5cm large aperture pvc pipe 12 is buried in the outside of aperture pvc pipe 11, and small-bore pvc pipe 11 and large aperture pvc pipe 12 are same
The heart justifies arrangement states, and the length of large aperture pvc pipe 12 should be bigger 5cm than the upper buried depth of coal seam 10, and the length of small-bore pvc pipe 11 is than lower coal
The big 5cm of layer buried depth.
Migration rule inverting experimental method that a kind of overlying strata based on surface drilling sliding deformation are disrumpent feelings, its step are as follows：
A. sand, calcium carbonate, gypsum and the water coal seam of laying simulation from bottom to top, simulation in simulation box 1 by proportioning are utilized
Rock stratum 3 and simulation unconsolidated formation 4 form simulation coal rock layer, during laying simulation rock stratum 3 and simulation unconsolidated formation 4, bury insertion
The conduit in the bottom analog coal seam of simulation box 1, the top exposure simulation unconsolidated formation 4 of conduit；
B. after waiting the drying of coal rock layer model forming, the both sides panel of simulation box 1, the coal rock layer by conduit from shaping are dismantled
Simulation surface drilling is formed after being extracted out in model, is 1 according to situ time similar proportion:10th, size similar proportion is 1:100
Similar proportion, stay set certain border coal pillar mining simulation coal seam from left to right, exploitation rate is every 15 minutes 5cm；
C. during the working seam of working face 8 is simulated, often exploit once, that is, advance 5cm, just uses with scale
Mini-drill endoscope 7 deeply simulates surface drilling, and the hole wall changing of the relative positions to simulating surface drilling destroys current intelligence and seen
Collection is surveyed, the altitude range of the changing of the relative positions, changing of the relative positions amount size occur for collection simulation surface drilling hole wall；Meanwhile to the disrumpent feelings fortune of overlying strata
Emotionally condition is recorded, including overburden rock damage, cranny development scope.
When carrying out the disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under single coal bed mining conditions
During experiment, the simulation surface drilling in the step a is simulation single coal bed condition Imitating surface drilling 6, the conduit used
For diameter 3cm pvc pipe 5, the length of pvc pipe 5 pushes up interface 5cm with exposure simulation unconsolidated formation 4 to be advisable.
The disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under the conditions of coal seam group mining is carried out is real
When testing, described simulation surface drilling is coal seam group condition Imitating surface drilling 13, and the conduit used is to combine tubular construction, institute
Stating combination tubular construction includes being vertically arranged the length small-bore pvc pipe 11 bigger 5cm a diameter of 3cm than the lower buried depth of coal seam 9, small-bore
The outer concentric of pvc pipe 11 justifies the large aperture pvc pipe 12 for being disposed with a diameter of 5cm, and the length of large aperture pvc pipe 12 should be than upper coal seam
The big 5cm of 10 buried depths；
The disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under the conditions of coal seam group mining is carried out is real
Step c when testing is：
After upper coal seam 10 has been adopted, because the coal seam group condition Imitating surface drilling 13 in upper coal seam 10 to ground table segment is adopted
Influence to produce the changing of the relative positions and rupture, to avoid its influence to the observation that drilled under the conditions of repeated mining, remolded using filling colloid 14
The wall of a borehole：
First, lower coal seam 9 top is inserted from earth's surface with a diameter of 3cm small-bore pvc pipe 11, using syringe 15 upper
Injection filling colloid 14 between Seam Mining overlying strata respective apertures footpath pvc pipe 11 and hole wall, until filling colloid 14 is full of pvc pipe
Space between 11 and hole wall, the filling colloid 14 are well mixed stirring by calcium carbonate, gypsum and latex and are made, calcium carbonate,
Gypsum, latex press 10g：10g：3ml ratios mix；
Secondly, 14 cementing shaping of colloid to be filled is waited, pvc pipe 11 is extracted, so that by small-bore pvc pipe 11 and greatly
The up big and down small drilling reparation that the simulation of aperture pvc pipe 12 is formed all is 3cm, pore size and lower coal bed drilling for upper and lower pitch-row
Aperture is identical, and remodeling the wall of a borehole requires smooth complete, without obvious crack, does not influence secondary observation.
The filling colloid 14 is well mixed stirring by calcium carbonate, gypsum and latex and is made, and calcium carbonate, gypsum, latex are pressed
10g：10g：3ml ratios mix.
Claims (8)
- A kind of 1. experimental provision of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata, it is characterised in that：It includes two sides Plate can be with the simulation box of folding（1）And video monitoring apparatus, simulation box（1）Inside it is covered with multilayer simulation coal rock layer, the coal rock layer Including being layered on simulation box（1）The simulation coal seam of bottom, simulation coal seam top are provided with simulation rock stratum（3）, simulation coal seam is according to experiment Setting is needed to lay, the top is provided with simulation unconsolidated formation（4）；The coal rock layer upper vertical is to having multiple depth until simulation box（1）It is used to simulate at undermost simulation coal seam Build the conduit of surface drilling；The video monitoring apparatus includes mini-drill endoscope（7）With pass through the connected host computer of circuit；When the disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under progress single coal bed mining conditions is tested, Simulation box（1）It is single coal bed condition Imitating coal seam that coal seam is simulated in interior coal rock layer（2）, and it is arranged on simulation box（1） Bottommost, single coal bed condition Imitating coal seam（2）It is provided with multilayer simulation rock stratum（3）；Now the conduit is using a diameter of 3cm pvc pipe（5）, pvc pipe（5）The depth of burying is until single coal bed condition Imitating coal seam（2）Place, pvc pipe（5）Length Unconsolidated formation is simulated with exposure（4）Top interface 5cm is advisable, and hole heart position is located at model width center.
- 2. the experimental provision of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata according to claim 1, its feature exist In：The simulation coal seam and simulation rock stratum（3）After being well mixed by sand, calcium carbonate, gypsum plus water stirring is made, wherein simulating Rock stratum（3）Including simulation incompetent bed and simulation hard formation.
- 3. the experimental provision of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata according to claim 2, its feature exist In：The simulation coal seam and simulation rock stratum（3）Sand, calcium carbonate, gypsum and the water quality ratio used is 7:1~9:1；Simulate coal Sand, calcium carbonate, the gypsum quality of layer are matched by analog simulation with colon 773, and add coal dust coloring；Simulate rock stratum（3）By Sand, calcium carbonate, gypsum quality simulate incompetent bed by analog simulation with the proportioning of colon 573, by sand, calcium carbonate, gypsum quality Simulation hard formation is matched by with colon 337；Simulate unconsolidated formation（4）Sand, calcium carbonate, gypsum quality match somebody with somebody colon by analog simulation 773 proportionings.
- 4. the experimental provision of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata according to claim 1, its feature exist In：When the disrumpent feelings migration rule inverting experiment of the overlying strata based on surface drilling sliding deformation under the conditions of carrying out coal seam group mining, Simulation box（1）It is respectively to be located at coal seam under the simulation of bottom that coal seam is simulated in interior coal rock layer（9）, simulate lower coal seam（9）On set There is simulation rock stratum（3）, simulate rock stratum（3）It is provided with the upper coal seam of simulation（10）；Now conduit uses a diameter of 3cm small-bore Pvc pipe（11）, small-bore pvc pipe（11）Bury a diameter of 5cm large aperture pvc pipe in outside（12）, small-bore pvc pipe（11）With Large aperture pvc pipe（12）For arranged in concentric circles state, large aperture pvc pipe（12）Length should be than upper coal seam（10）The big 5cm of buried depth, Small-bore pvc pipe（11）Length is bigger 5cm than lower coal seam buried depth.
- 5. a kind of usage right requires the disrumpent feelings migration rule of the overlying strata based on surface drilling sliding deformation of 1 or 4 experimental provisions Restrain inverting experimental method, it is characterised in that step is as follows：A. proportioning is pressed in simulation box using sand, calcium carbonate, gypsum and water（1）In from bottom to top laying simulation coal seam, simulation rock Layer（3）With simulation unconsolidated formation（4）Simulation coal rock layer is formed, rock stratum is simulated in laying（3）With simulation unconsolidated formation（4）During, bury If insert simulation box（1）The conduit in bottom analog coal seam, the top exposure simulation unconsolidated formation of conduit（4）；B. after waiting the drying of coal rock layer model forming, simulation box is dismantled（1）Both sides panel, the coal rock layer by conduit from shaping Simulation surface drilling is formed after being extracted out in model, is 1 according to situ time similar proportion:10th, size similar proportion is 1:100 Similar proportion, stay set certain border coal pillar mining simulation coal seam from left to right, exploitation rate is every 15 minutes 5cm；C. in simulation working face（8）During working seam, often exploit once, just peeped using the mini-drill with scale Depending on instrument（7）Surface drilling is deeply simulated, and the hole wall changing of the relative positions to simulating surface drilling destroys current intelligence and is observed collection, adopts The altitude range of the changing of the relative positions, changing of the relative positions amount size occur for collection simulation surface drilling hole wall；Meanwhile the disrumpent feelings motion conditions of overlying strata are carried out Record, including overburden rock damage, cranny development scope；Tested when carrying out the disrumpent feelings migration rule inverting of the overlying strata based on surface drilling sliding deformation under single coal bed mining conditions When, the simulation surface drilling in the step a is simulation single coal bed condition Imitating surface drilling（6）, the conduit used is Diameter 3cm pvc pipe（5）, pvc pipe（5）Length with exposure simulate unconsolidated formation（4）Top interface 5cm is advisable.
- 6. the experimental method of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata according to claim 5, its feature exist In：When the disrumpent feelings migration rule inverting experiment of the overlying strata based on surface drilling sliding deformation under the conditions of carrying out coal seam group mining, Described simulation surface drilling is coal seam group condition Imitating surface drilling（13）, the conduit used is combination tubular construction, described Combination tubular construction includes being vertically arranged length than lower coal seam（9）The a diameter of 3cm of the big 5cm of buried depth small-bore pvc pipe（11）, aperture Footpath pvc pipe（11）Outer concentric justifies the large aperture pvc pipe for being disposed with a diameter of 5cm（12）, large aperture pvc pipe（12）Length should Than upper coal seam（10）The big 5cm of buried depth.
- 7. the experimental method of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata according to claim 6, its feature exist In：When the disrumpent feelings migration rule inverting experiment of the overlying strata based on surface drilling sliding deformation under the conditions of carrying out coal seam group mining Step c is：Upper coal seam（10）After having adopted, due to upper coal seam（10）To the coal seam group condition Imitating surface drilling of ground table segment（13）Adopted It is dynamic to influence to produce the changing of the relative positions and rupture, to avoid its influence to the observation that drilled under the conditions of repeated mining, using filling colloid（14） Remold the wall of a borehole：First, with a diameter of 3cm small-bore pvc pipe（11）Lower coal seam is inserted from earth's surface（9）Top, utilize syringe（15） Upper Seam Mining overlying strata respective apertures footpath pvc pipe（11）The injection filling colloid between hole wall（14）, until filling colloid（14） Full of pvc pipe（11）Space between hole wall；Secondly, colloid to be filled is waited（14）Cementing shaping, by pvc pipe（11）Extract, so that passing through small-bore pvc pipe（11）With Large aperture pvc pipe（12）The up big and down small drilling reparation that simulation is formed all is 3cm, pore size and lower coal seam for upper and lower pitch-row Boring aperture is identical, and remodeling the wall of a borehole requires smooth complete, without obvious crack, does not influence secondary observation.
- 8. the experimental method of the disrumpent feelings rule of surface drilling sliding deformation inverting overlying strata according to claim 7, its feature exist In：The filling colloid（14）Stirring is well mixed by calcium carbonate, gypsum and latex to be made, calcium carbonate, gypsum, latex press 10 g：10 g：3 ml ratios mix.
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