CN107905816A - A kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods - Google Patents
A kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003245 coal Substances 0.000 claims abstract description 55
- 238000003325 tomography Methods 0.000 claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000005065 mining Methods 0.000 claims abstract description 21
- 239000000126 substance Substances 0.000 claims abstract description 17
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000007569 slipcasting Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 7
- 230000002706 hydrostatic effect Effects 0.000 claims description 6
- 229920002521 macromolecule Polymers 0.000 claims description 5
- 230000005641 tunneling Effects 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 9
- 238000000605 extraction Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 230000032258 transport Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052655 plagioclase feldspar Inorganic materials 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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Abstract
Faced upward the invention discloses a kind of three-soft seam high-seam working face and adopted more than 5m major fault methods, preventing slurry injection is carried out to the fault plane that two lanes disclose in advance, before the passing fault phase, according to the fault parameter verified and roof and floor lithologic drafting tomography layer position and the corresponding lithological profile figure of drilling；According to the change of lithology condition and Fault profile figure, adjustment coalcutter incised layer position：Head elder generation passing fault, working face progressively disclose tomography by accelerating advance rate before passing fault, adjusting two lane advanced arguments, head first discloses tomography, the last passing fault of tail, and working face is in oblique state with tomography；According to Fault profile figure in advance in coal wall note chemical material prevention breaking roof, when working face extraction is to apart from 5~7m of fault plane, reinforced in footwall top plate injection chemical material.The present invention effectively strengthens the management of shear-zone top side, working face is crossed major fault smoothly according to design back production layer position by tomography for fully-mechanized mining working and is provided valuable technical experience.
Description
Technical field
Mining method is faced upward compared with large working area the present invention relates to a kind of fault throw, more particularly to a kind of three-soft seam is adopted greatly
High comprehensive mining working face, which is faced upward, adopted more than 5m major fault methods.
Background technology
Three-soft seam refers to what is run into coal mining：Soft roof strata, soft main mining coal seam and soft seat earth rock
Layer, under normal circumstances, the colliery coal seam and roof and floor with three soft features are soft stratum.Cracks in coal seam is developed, and construction is multiple
It is miscellaneous.
Three exploiting field 1612 (3) working face Fs227 fault throws of Zhang Ji Norths west are larger, complex lithology, and are in 1611 (3)
Along empty stressed zone, fault plane stress concentration, causes fault plane roof cracking in face.1612 (3) working faces are to be adopted on western three 13-1 coals
Second, area working face, east is adjacent to F25 tomographies, west to boundary protection pillar line；Southern side is not yet exploitation 13-1 coal entities；North
Portion is local back production 1611 (3) working face.Working face absolute altitude is -455m~-533m.Working face, which can be adopted, moves towards long 1321m, inclines
Plagioclase 239m.4.6~8.3m of coal seam thickness, average 5.8m, coal bed texture is complicated, 8~14 ° of seam inclination.According to westerly three
Exploiting field back production experience, fault belt Roof Control are difficult point in working face extraction, emphasis.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of three-soft seam high-seam working face
Face upward and adopted more than 5m major fault methods, tomography can be passed through.
The present invention is achieved by the following technical solutions, and the present invention comprises the following steps：
(1) fault plane beats depth hole grouting and reinforcing before passing fault
Preventing slurry injection is carried out to the fault plane that two lanes disclose in advance, fault plane progress longhole infusion mud adds in advanced opposite
Transported Gu needing to transport rail before drilling construction along the whitewashing of drill site tunneling boring, boundary of works area for rail along each 20m in working face fault plane both sides,
Spray thickness is not less than 100mm, prevents slip casting liquid from being flowed out from coal wall；
(2) tomography extension and lithology in the coverage of tomography are verified
Before the passing fault phase, tomography layer position is drawn according to the drill fault parameter verified and roof and floor lithologic and corresponding lithology is cutd open
Face figure；
(3) layer position Adjusted Option during passing fault
According to the change of lithology condition and Fault profile figure, adjustment coalcutter incised layer position：Head elder generation passing fault, working face
Progressively disclose tomography by, take working face point three sections of car passing faults that float, in section packet gradually float car transition, every group of 5~10 framves,
Chain mat machine keeps transition gentle, and horizontal, verticality meets code regulation；
(4) top side reinforces during passing fault
Accelerate advance rate before passing fault, daily advance rate is not less than 2 knife coals, the control of non-tomography influence area mining height 4~
5m, tomography influence area mining height are controlled in 3~5m；Two lane advanced arguments are adjusted, head first discloses tomography, and tail is last excessively disconnected
Layer, working face are in oblique state with tomography；Prevent breaking roof in coal wall note chemical material in advance according to Fault profile figure, when
When working face extraction is to apart from 5~7m of fault plane, reinforced in footwall top plate injection chemical material.
In the step (1), carrying out preventing slurry injection processing to the fault plane that two lanes disclose in advance is：Tomography faces out spray 20
Rice, using deep Shallow hole grouting, 2 meters of shallow bore hole, 8 meters of deep hole.
In the step (1), the size of grouting pressure calculates according to the following formula：
P=(2~2.5) P1, P is maximum allowable grouting pressure in formula；P1 is coal seam hydrostatic pressure, according to hydrostatic pressure 4
~6Mp, selects 12~13MPa of grouting pressure；During deep Shallow hole grouting, the slip casting ratio of mud is 1：0.4, during the slip casting of coal seam, the ratio of mud
For 2:0.4.
In the step (4), the method that chemical material is reinforced is as follows：In progradation, by working face head to tail
Start progressively to fill macromolecule chemical material；After working face discloses fault plane lower wall coal body, when exposure coal body exceedes setting range
Note high molecular material reinforcing coal side.
The present invention has the following advantages compared with prior art：It is of the invention effectively to strengthen the management of shear-zone top side, make work
Face crosses major fault for fully-mechanized mining working and provides valuable technical experience, be mine smoothly according to design back production layer position by tomography
Satisfactory completion production under-study plan and all operations, profit norm have played important function.
Brief description of the drawings
Fig. 1 is the construction plan of the present invention；
Fig. 2 is injected hole arrangement schematic diagram；
Fig. 3 is Fs227 tomography grouting and reinforcings hole floor plan design；
Fig. 4 is Fs227 tomography grouting and reinforcings hole design profile figure；
Fig. 5 is that 1612 (3) working faces float car parameter schematic diagram,
Wherein, to be 140 frame rails float car schematic diagram along moving back ruler working face a, in figure A1 be rail along ruler is moved back, A2 is 140 framves；
B is that the transport of 105 framves moves back ruler working face and floats car schematic diagram, in figure B1 be fortune along ruler is moved back, B2 is 105 framves；
C, which is 70 framves fortune, to float car schematic diagram along moving back ruler working face, in figure C1 be fortune along ruler is moved back, C2 is 70 framves；
D, which is 35 framves fortune, to float car schematic diagram along moving back ruler working face, in figure D1 be fortune along ruler is moved back, D2 is 35 framves；
E, which is 1 frame fortune, to float car schematic diagram along moving back ruler working face, in figure E1 be fortune along ruler is moved back, E2 is 1 frame.
Embodiment
Elaborate below to the embodiment of the present invention, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
As shown in Figure 1,1612 (3) working faces of the present embodiment are second, exploiting field working face on western three 13-1 coals, east
Neighbouring F25 tomographies, west to boundary protection pillar line；Southern side is not yet exploitation 13-1 coal entities；The north is local back production 1611
(3) working face.Working face absolute altitude is -455m~-533m.Working face, which can be adopted, moves towards long 1321m, tilts long 239m.Coal seam thickness
4.6~8.3m, average 5.8m, coal bed texture is complicated, 8~14 ° of seam inclination.Boundary of works area is rail fortune along working face lateral shear face
With inner (coal road section) each 20m, construction length amounts to 40m, and A portions are fault plane in Fig. 1.
Fs227 tomography overviews in the 2# exceptions areas of working face：
Working face fortune is 2# exceptions areas coverage along 498m~550m sections of ruler is moved back along ruler 473m~530m, rail is moved back.2# is different
Normal area influences exceptions area for Fs227 tomographies, and 1 coals of influence degree H ﹥ are thick, back production is influenced very big.One is developed on 2# exceptions areas periphery
A top plate sandstone Zhi Fu areas, in sandstone Zhi Fu areas, inside ceiling panel is relatively broken, locally may there is top and wall caving phenomenon.
Fortune forwards will disclose Fs227 tomographies to ruler 497m, rail is moved back along ruler 515m is moved back, and influence back production length about 65m in face, break
Layer runs through whole working face, and trend is substantially parallel with working face.As shown in table 1.
1 Fs227 tomography situation lists of table
| Fault name | Property | Move towards (°) | It is inclined to (°) | Inclination angle (°) | Drop (m) | To back production influence degree |
| Fs227 | Just | 184~189 | 274~279 | 31~80 | 5.7~6.2 | Influence big |
The method of specific passing fault is as follows：
(1) fault plane beats depth hole and grouting and reinforcing before passing fault
(11) as shown in Fig. 2, A, B, C, D are respectively 1 row, 2 rows, 19 rows and 20 rows in figure, break in advance to two lane exposure
Aspect carries out preventing slurry injection.Tomography faces out 20 meters of spray, using deep Shallow hole grouting, 2 meters of shallow bore hole, 8 meters of deep hole.
(12) fault plane carries out longhole infusion mud reinforcing in advanced opposite.Fortune is along respectively from moving back cloth at ruler 530m, 540m
Two groups of drillings are put, empty borehole bottom location is bored and is located at hanging wall roof, design 22 holes altogether.Rail two groups of drillings of suitable design, one group
In 4# drill sites, one group fire prevention drill site (moving back ruler 560m) long drilled holes are beaten into face respectively, design 24 holes altogether.As shown in Fig. 2, figure
Middle top plate 1 is located at the top of coal wall 2, and 1# holes are shallow bore hole in figure, and construction location is away from top plate 1m, hole depth 2m, pipe range 1.5m, front end
0.5m is floral tube：2# holes are deep hole, and for construction location away from 1# holes 1m, hole depth 8.5m, pipe range 8m, front end 3m is floral tube；Construction luck
Construct along by 10~12 ° of elevations angle, rail is constructed along by 10~12 ° of angles of depression.
As shown in Fig. 3, Fig. 4 and table 2, this batch of inlet well designs 23 altogether, moves back ruler point 494m (4# drill sites from rail is suitable respectively
It is interior) position, fortune constructs along 512m places (drill site), and wherein rail arranges 11 holes along drill site, is responsible for construction by Te Xiu areas, transports suitable
Drill site arranges that construction is responsible in 12 holes by surveying two teams of brill.Need to carry out tunneling boring whitewashing along drill site to rail, fortune before drilling construction, spray is thick
Not less than 100mm, to ensure slip casting effect.Boring aperture is Φ 94mm, and azimuth is in drilling horizontal projection and upper and lower crossheading
The angle of line, fortune along towards working face, rail along towards collar extension, it is to the left be it is negative, to the right is just；Horizontal plane is subject at inclination angle, upwards
For just, downward is negative.For fortune along drill site tapping point apart from back 0.8m, pitch of holes is 0.5m；Rail along drill site tapping point away from
From back 1.0m, pitch of holes is similarly 0.5m.
Table 2 1612 (3) face Fs227 fault enhancement drilling construction parameter lists
(13) it is rail fortune along working face fault plane two to need to transport rail before drilling construction along the whitewashing of drill site tunneling boring, boundary of works area
Each 20m in side, spray thickness are not less than 100mm, prevent slip casting liquid from being flowed out from coal wall, influence slip casting effect.
(14) grouting pressure is the power that slurries are spread in country rock, directly affects grouting and reinforcing quality and effect.Slip casting
Pressure size calculates according to the following formula：
P=(2~2.5) P1, P is maximum allowable grouting pressure in formula；P1 is coal seam hydrostatic pressure, according to hydrostatic pressure 4
~6Mp, selects grouting pressure (voltage stabilizing) 12~13MPa.
(15) deep Shallow hole grouting, the ratio of mud 1:0.4, during the slip casting of coal seam, the ratio of mud 2:0.4, moisture ratio is tuned up, increases coal
Slip casting permeability in wall, expands range of grouting.
(16) according to live coal petrography actual conditions, transport along 12.5 tons of cementing altogether；Rail is along 12 tons of cementing altogether.
(2) tomography extension and lithology situation in Fs227 tomography coverages are verified according to drilling
(21) rail is followed successively by upwards along Roof rock feature：1.5m packsands, 0.3m mud stone, 1.7m packsands, 0.3m mud stone,
2.6m packsand；Fortune is followed successively by upwards along Roof rock feature：2.2m packsands, 0.5m seams, 3.6m thickness packsands.
(21) fortune is 8.5 along actual measurement sandstone f values；Rail is 12.3 along actual measurement sandstone f values, but big portion is Sandy Silt in face,
Its f value is less than 10, Φ, 3 meters of coalcutter screw type rollers, and it is 5~10 to be adapted to f values, is seen according to Roof rock feature, and coal machine replaces strength
Can normally broken rock, coal cutting after pick.
(23) as shown in Figure 3 and Figure 4, before the passing fault phase, according to the fault parameter verified and the roof and floor lithologic drafting of drilling
Tomography layer position and corresponding lithological profile figure, are divided into 5 sections of profile drawings, and formulating working face according to profile is segmented the car that floats, broken top
Chart, the listed management in scene, controls drift height and angle per knife, particularly starting stage drift car is necessary in strict accordance with the chart
In place.
(3) layer position Adjusted Option during passing fault
In process of production, according to the change of lithology condition and Fault profile figure, adjustment coalcutter incised layer position, takes and cuts
It is soft not cut hard principle, construction is blown out with reference to broken spoil, reduces equipment loss, improves advance rate.
(31) as shown in figure 5, fortune is along first with pushing up back production, back production to transport along start at 470m to caunch, the car that floats is (it is expected that the spacing that floats
From 37m), the height that floats is per 150~200mm of knife；Back production is to moving back 13-2 seams top plate back production on ruler 496m heels；Back production is to moving back ruler
Continue the car that floats after entering fault plane at point 501m；Coal top transition (it is expected that capturing the most thick 1.5m in coal top) is captured after into footwall, is floatd
Car keeps up with 13-1 coals top plate, and stope incrementally increases mining height until normal back production at the same time.Tunnel is estimated at lower end 501m connects
1~1.5m of heights of roofs.
(31) because of head elder generation passing fault, working face progressively discloses tomography by reducing tomography and disclosing scope, take working face
Divide three sections of car passing faults that float, car transition of gradually floaing, every group of 5~10 framves are grouped in section, chain mat machine keeps transition gentle, horizontal, vertical
Straight degree meets code regulation, is specially：
(311) first segment floats car：To transporting along moving back at ruler point 470m, head~69# framves are first caunched, are floatd working face extraction
Car.It is expected that back production, to transporting along moving back at ruler 497m (float car distance 27m), 35# framves keep up with 13-2 seam top plate back production；Back production is to moving back ruler
Enter fault plane at point 501m, into footwall after the car that continues to float capture coal top transition (it is expected that capturing the most thick 1.6m in coal top), float car
Keeping up with 13-1 coals top plate, stope incrementally increases mining height until normal back production at the same time.
(312) second segment floats car：For working face extraction to transporting along moving back at ruler point 485m, 70#~120# framves start the car that floats.It is expected that
To transporting along moving back at ruler 506m, 70# framves keep up with 13-2 seam top plate back production for back production；Back production enters fault plane to moving back at ruler point 509m,
The car that continues to float after into footwall captures coal top transition (it is expected that capturing the most thick 1.4m in coal top)；The car that floats keeps up with 13-1 coals top plate while returns
Mining face incrementally increases mining height until normal back production.It is expected that back production, to transporting along moving back at ruler 514m, working face 105# framves enter disconnected
Aspect, is advanced into fortune along at 519m, 105# framves are completely into footwall, it is contemplated that capture coal top 2.1m thickness.Into after footwall
The car that continues to float, which keeps up with 13-1 coal top plates and works at the same time face, incrementally increases mining height, until normal back production.
(313) the 3rd sections of cars that float：To rail along moving back at ruler point 500m, working face 121#~140# framves start to float working face extraction
Car.According to rail along Roof rock feature, 2.6 meters thick packsand (broken 1.7m thickness packsand) back production cannot not be taken brokenly.140# framves float car to moving back
Ruler point 524m (float car distance 24m) keeps up with 2.6 meters thick packsand top plate, and back production enters fault plane at 520m.Into under tomography
After disk, top coal transition is captured, it is contemplated that adopt to rail is suitable and move back coal top thickness 2.3m at ruler 527m.Into after lower wall, the car that floats with upper plate at the same time
Mining height is progressively increased in working face until normal back production, as shown in table 3.
Table 3 1612 (3) Coal Face Passing Through Fs227 tomographies break the top amount table of comparisons
(4) side reinforcement means in top during passing fault
(41) accelerate advance rate before passing fault, reduce because before direct toplap in coal wall be broken caused by wall caving fall it is useful therefore, often
It ensures the advance rate not less than 2 knife coals.
(42) plus working face mining height management during passing fault, non-tomography influence area mining height are controlled in 4.5m or so；Tomography
Influence area controls mining height, and due to stent minimum constructive height 2.8m, coal machine height is in 3m, safety travel, hydraulic pressure branch plus 0.5m
The unnecessary pipeline of frame and the amount of crushing, tomography influence area mining height control in 4m or so, it is ensured that coal machine under stent normal through,
Cash amount is cut in reduction.
(43) two lane advanced arguments are adjusted, head first discloses tomography, the last passing fault of tail, and working face is in oblique with tomography
Friendship state, reduces working face and discloses tomography scope at the same time, breaking roof is in small range controllable state；Ensure that head closes at the same time
Reason overlap joint, reduces chain mat machine bottom chain belt and turns one's head coal and influence advance rate.
(44) the daily specification quality management of working face is strengthened, emphasis is the adjustment of force piece state, it is ensured that poppet pressure
Meet the requirements.
(45) breaking roof is prevented in coal wall note chemical material in advance according to Fault profile figure, when working face extraction to distance
During fault plane 6m or so, reinforced in footwall top plate note chemical material.Specially：Fortune is advanced to along moving back at ruler 495m, is worked
The frame of face head~69 starts to note macromolecule chemical material apart from fault plane 6m；Fortune is advanced to along moving back at ruler 503m, working face 70#
~120# frame local distance fault plane 6m, note macromolecule chemical material in advance；Rail is advanced to along moving back at ruler 514m, working face 120#
~tail starts to note chemical material；After working face discloses fault plane lower wall coal body, macromolecule is noted when disclosing coal body more than 5 frame scope
Material reinforced coal side, prevent lower wall coal body it is soft be not easy to catch cause wall caving to fall top；, can if top plate is integrally preferable and controllable
Local reduction stage small range note chemical material is taken, is accomplished based on roof timbering manages, supplemented by grouting and reinforcing prevention, is reduced
Material consumption.
During deep, shallow hole drilling grouting and reinforcing and passing fault are beaten fault plane and top plate in advance by taking two lanes crush region
Working face wall notes chemical material reinforcement means, has effectively controlled fault belt top plate, has avoided large area wall caving, emits
Useful therefore generation；At the same time according to fault parameter, extension situation and the roof and floor lithologic verified, refined of drilling, work is drawn out
Face passing fault profile has simultaneously formulated float car, broken top chart of passing fault and is suspended on on-the-spot guidance, listed management is carried out, easy to worker
Scene is floatd car, broken vertex cut coal operation, is reached and is rectified a deviation in time, adjusts correct back production layer position purpose；Reality is determined according to Fault profile figure
Border drop and scope is disclosed, carry out and float car by portion, segmentation adjustment, avoid large area from disclosing fault tectonic, roof cracking is difficult to control
System, it is ensured that working face passes through tomography.Live back production effect shows, constructs according to the tomography scheme, effectively strengthens resolving
The management of layer band top side, makes working face cross major fault smoothly according to design back production layer position by Fs227 tomographies for fully-mechanized mining working and carry
For valuable technical experience.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods, it is characterised in that including following
Step：
(1) fault plane beats depth hole grouting and reinforcing before passing fault
Preventing slurry injection is carried out to the fault plane that two lanes disclose in advance, fault plane carries out longhole infusion mud reinforcing in advanced opposite, bores
Need to transport rail before the construction of hole thick not along each 20m in working face fault plane both sides, spray for rail fortune along the whitewashing of drill site tunneling boring, boundary of works area
Less than 100mm, prevent slip casting liquid from being flowed out from coal wall；
(2) tomography extension and lithology in the coverage of tomography are verified
Before the passing fault phase, according to the fault parameter verified and roof and floor lithologic drafting tomography layer position and the corresponding lithological profile of drilling
Figure；
(3) layer position Adjusted Option during passing fault
According to the change of lithology condition and Fault profile figure, adjustment coalcutter incised layer position：Head elder generation passing fault, working face is progressively
Tomography is disclosed by taking three sections of car passing faults that float of working face point, car transition of gradually floaing, every group of 5~10 framves, carrier bar being grouped in section
Machine keeps transition gentle, and horizontal, verticality meets code regulation；
(4) top side reinforces during passing fault
Accelerate advance rate before passing fault, daily advance rate is not less than 2 knife coals, and non-tomography influence area mining height is controlled in 4~5m, broken
The mining height control of layer influence area is in 3~5m；Two lane advanced arguments are adjusted, head first discloses tomography, the last passing fault of tail, work
Face is in oblique state with tomography；According to Fault profile figure in advance in coal wall note chemical material prevention breaking roof, work as working face
When back production is to apart from 5~7m of fault plane, reinforced in footwall top plate injection chemical material.
2. a kind of three-soft seam high-seam working face according to claim 1, which is faced upward, adopted more than 5m major fault methods,
It is characterized in that, in the step (1), carrying out preventing slurry injection processing to the fault plane that two lanes disclose in advance is：Tomography faces out spray
20 meters of note, using deep Shallow hole grouting, 2 meters of shallow bore hole, 8 meters of deep hole.
3. a kind of three-soft seam high-seam working face according to claim 1, which is faced upward, adopted more than 5m major fault methods,
It is characterized in that, in the step (1), the size of grouting pressure calculates according to the following formula：
P=(2~2.5) P1, P is maximum allowable grouting pressure in formula；P1 is coal seam hydrostatic pressure, according to hydrostatic pressure 4~
6Mp, selects 12~13MPa of grouting pressure；During deep Shallow hole grouting, the slip casting ratio of mud is 1：0.4, during the slip casting of coal seam, the ratio of mud is
2:0.4。
4. a kind of three-soft seam high-seam working face according to claim 1, which is faced upward, adopted more than 5m major fault methods,
It is characterized in that, in the step (4), the method that chemical material is reinforced is as follows：In progradation, by working face head to machine
Tail starts progressively to fill macromolecule chemical material；After working face discloses fault plane lower wall coal body, disclose coal body and exceed setting range
When note high molecular material reinforcing coal side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711088877.0A CN107905816A (en) | 2017-11-08 | 2017-11-08 | A kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711088877.0A CN107905816A (en) | 2017-11-08 | 2017-11-08 | A kind of three-soft seam high-seam working face, which is faced upward, adopted more than 5m major fault methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107905816A true CN107905816A (en) | 2018-04-13 |
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| CN108825235A (en) * | 2018-05-04 | 2018-11-16 | 内蒙古伊泰煤炭股份有限公司 | Coal mining height is to tick lables method and structure and coal mine end mining method |
| CN109798131A (en) * | 2019-01-22 | 2019-05-24 | 淮南矿业(集团)有限责任公司 | Help grouting strengthening method in a kind of three-soft seam large-mining-height working surface top |
| CN111236940A (en) * | 2020-01-14 | 2020-06-05 | 山西晋城无烟煤矿业集团有限责任公司 | Method for safely and efficiently passing reverse fault group on fully mechanized coal mining face |
| CN111810197A (en) * | 2019-08-27 | 2020-10-23 | 淮南矿业(集团)有限责任公司 | Pre-grouting reinforcement method for fault structural zone of working face |
| CN113027467A (en) * | 2021-04-01 | 2021-06-25 | 宿州市金鼎安全技术股份有限公司 | Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone |
| CN116906046A (en) * | 2023-07-27 | 2023-10-20 | 山东省煤田地质局第四勘探队 | Working surface fault passing method based on coal field geological exploration |
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| CN108825235A (en) * | 2018-05-04 | 2018-11-16 | 内蒙古伊泰煤炭股份有限公司 | Coal mining height is to tick lables method and structure and coal mine end mining method |
| CN109798131A (en) * | 2019-01-22 | 2019-05-24 | 淮南矿业(集团)有限责任公司 | Help grouting strengthening method in a kind of three-soft seam large-mining-height working surface top |
| CN109798131B (en) * | 2019-01-22 | 2020-09-08 | 淮南矿业(集团)有限责任公司 | Top slope grouting reinforcement method for large mining height working face of three-soft coal seam |
| CN111810197A (en) * | 2019-08-27 | 2020-10-23 | 淮南矿业(集团)有限责任公司 | Pre-grouting reinforcement method for fault structural zone of working face |
| CN111810197B (en) * | 2019-08-27 | 2022-04-08 | 淮南矿业(集团)有限责任公司 | Pre-grouting reinforcement method for fault structural zone of working face |
| CN111236940A (en) * | 2020-01-14 | 2020-06-05 | 山西晋城无烟煤矿业集团有限责任公司 | Method for safely and efficiently passing reverse fault group on fully mechanized coal mining face |
| CN113027467A (en) * | 2021-04-01 | 2021-06-25 | 宿州市金鼎安全技术股份有限公司 | Advanced grouting reinforcement treatment method for fully mechanized mining face passing through structural broken zone |
| CN116906046A (en) * | 2023-07-27 | 2023-10-20 | 山东省煤田地质局第四勘探队 | Working surface fault passing method based on coal field geological exploration |
| CN116906046B (en) * | 2023-07-27 | 2024-02-06 | 山东省煤田地质局第四勘探队 | Working surface fault passing method based on coal field geological exploration |
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