CN104612753B - What maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines - Google Patents
What maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines Download PDFInfo
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- CN104612753B CN104612753B CN201510043883.9A CN201510043883A CN104612753B CN 104612753 B CN104612753 B CN 104612753B CN 201510043883 A CN201510043883 A CN 201510043883A CN 104612753 B CN104612753 B CN 104612753B
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- 235000019738 Limestone Nutrition 0.000 title claims abstract description 77
- 239000006028 limestone Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000005265 energy consumption Methods 0.000 claims abstract description 27
- 230000005611 electricity Effects 0.000 claims abstract description 18
- 230000008595 infiltration Effects 0.000 claims abstract description 12
- 238000001764 infiltration Methods 0.000 claims abstract description 12
- 238000013316 zoning Methods 0.000 claims abstract description 9
- 238000013461 design Methods 0.000 claims abstract description 8
- 238000005065 mining Methods 0.000 claims description 29
- 239000003673 groundwater Substances 0.000 claims description 24
- 238000007569 slipcasting Methods 0.000 claims description 16
- 230000000994 depressogenic effect Effects 0.000 claims description 14
- 238000011161 development Methods 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 9
- 206010002961 Aplasia Diseases 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 6
- 239000012466 permeate Substances 0.000 claims description 6
- 230000010339 dilation Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 206010016807 Fluid retention Diseases 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000004577 thatch Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of anti-method of harnessing the river closing stifled lean phase combination that maokou limestone underground grouting dams, comprise the steps: the exploiting field of high energy consumption under (1) closed-in well, safe power supply drainage condition difference；(2) elevation range in maokou limestone karsts developing area vertical zoning territory is determined；(3) in the maokou limestone duplexsyncline base plate underlied in the exploiting field of buttoned-up down-hole high energy consumption, safe power supply drainage condition difference, choose the subsidiary anticline ridge nearest away from infiltration area and design target area as underground grouting；(4) degree of depth and the orientation in maokou limestone underground grouting hole are determined；(5) maokou limestone subsoil water under Vatch basin；(6) electricity price low-valley interval draining.The present invention can take precautions against water inrush accident；Reduce the probability occurring Karst geomorphy to subside, and a large amount of electricity charge can be saved, increase economic efficiency.
Description
Technical field
The present invention relates to a kind of anti-method harnessed the river in colliery, especially relate to what a kind of maokou limestone underground grouting dammed
Close the anti-method of harnessing the river that stifled lean phase combines.
Background technology
South China coalfield belongs to Huanan Late upper permian coalfield, and seat earth is mostly maokou limestone water-bearing layer, its hydrology
Geological conditions is often between extremely complexity-Midpoint type.-2012 years calendar year 2001s, there is water inrush accident 179 in national colliery, extremely
Number of dying 1598 people, wherein colliery, south occurs 96, and dead 917 people account for 53.6% and 57.4% respectively.Water inrush accident causes weight
Big casualties, property loss and serious social and environmental problems.Colliery, south maokou limestone mine water disaster preventing and treating at present is typically adopted
Taking ground leak stopping, down-hole forced-ventilated, based on the control measures of row.Due to maokou limestone mine hydrogeology complicated condition, adopted
Pick destroys or the karst aquifer of impact, old empty water, surface water, and its nourishment condition is fine, and Source Of Supply is extremely abundant, and mine is dashed forward
Water is frequent, and anti-riparian work amount is big, and effect is poor.
On the basis of long-term work is put into practice, preventing and treating water conservancy project author has successively explored approach and the side of some water hazard prediction
Method is harnessed the river in colliery aspect, and " Draining hook " and " grouting for water blocking " is two large-engineering measures of mine water preventing and treating.Water hazard prediction
The selection of technical method depends on to be fully realized hydrogeologic condition, with reference to the monitoring information of water inrush precursor.For
Some disastrous water inrush accidents, for rescue and relief work, the method mostly taking grouting for water blocking.But often result in engineering more afterwards
Repair or the waste of water resource and pollution.Seldom there is at present the colliery can be from the anti-angle of harnessing the river of mine entirety, by water-bearing layer slip casting
Being modified to water barrier, it is achieved the carrying out of mine groundwater is rationally dammed, the discharge to full ore deposit subsoil water carries out integrated planning.Existing
Underground grouting water blockoff stopped flow technique be primarily directed to the north mining area Ordovician limestone, be all for the purpose of water blockoff, do not examine
Consider the drainage after groundwater trapping.
For colliery, south, the most perpendicular point of band domain characteristic of the karsts developing area in maokou limestone water-bearing layer, mine is to deep
During developing, many inflow rate of mine water are the most obvious with different geohydrologic unit changes.Mine floor is by the strongest
Tectonism, defines the duplexsyncline structure of complexity mostly.Duplexsyncline is by some subsidiary anticlines, to tiltedly combining
One large-scale synclinal structure, the spine of the most same fold be the highest portion position of subsidiary anticline protuberance, groove portion for secondary to tiltedly
The minimum position of depression.The stratum of this complicated structure is Middle P ermian maokou limestone, and karst is the most relatively grown, and subsoil water is very
Abundant.How to make full use of karsts developing area vertical zoning territory characteristic and the duplexsyncline geology in maokou limestone water-bearing layer, colliery, south
Structure, forced-ventilated drainage simply of correcting one's mistakes is to close the guarded drainage mode that stifled lean phase combines, to promote mine guarded drainage safety
Protect well ability, improve mine economic profit, be the key subjects of worth research and development.
Summary of the invention
In order to solve above-mentioned technical problem, lean phase is blocked up in the pass that the present invention provides a kind of maokou limestone underground grouting to dam
In conjunction with anti-method of harnessing the river, it can take precautions against water inrush accident；Reduce the probability occurring Karst geomorphy to subside, and can save big
The amount electricity charge, increase economic efficiency.
The technical solution used in the present invention, comprises the steps:
(1) high energy consumption, the exploiting field of safe power supply drainage condition difference under closed-in well；
(2) elevation range in maokou limestone karsts developing area vertical zoning territory is determined；
(3) the maokou limestone that underlies of exploiting field of buttoned-up down-hole high energy consumption, safe power supply drainage condition difference compound to
In inclined bottom plate, choose the subsidiary anticline ridge nearest away from infiltration area and design target area as underground grouting；
(4) degree of depth and the orientation in maokou limestone underground grouting hole are determined；
(5) maokou limestone subsoil water under Vatch basin；
(6) electricity price low-valley interval draining.
What above-mentioned maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines, the tool of step (1)
Body operating process is as follows: by carrying out the statistical data for many years of coal mining output, displacement and the water yield in Nei Ge exploiting field, mining area point
Analysis, determines the exploiting field of down-hole high energy consumption, safe power supply drainage condition difference, it is forever closed, and withdraws from all of closedown exploiting field
Equipment.
What above-mentioned maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines, the tool of step (2)
Body operating process is as follows: by holing mining area maokou limestone, and analysis solution cavity rate, along the Changing Pattern on stratum, obtains Mao Kou
Limestone karst development degree is in three band domain of vertical direction: solution cavity development belt, fracture extension zone and karst aplasia band；According to
Maokou limestone karstic development pattern, determine mine hydrogeology condition demarcation line be fracture extension zone and karst aplasia band point
Interface.
What above-mentioned maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines, the tool of step (3)
Body operating process is as follows: find out groundwater in mining area feeding area, runoff zones, stratigraphic sequence and geological structure, in buttoned-up down-hole
In the maokou limestone duplexsyncline base plate underlied in the exploiting field of high energy consumption, safe power supply drainage condition difference, choose away from the recharge of ground water
The nearest subsidiary anticline ridge in district designs target area, above-mentioned subsidiary anticline ridge and the recharge of ground water as underground grouting
A secondary is at least there is to oblique depressed area between district.
What the slurry of above-mentioned maokou limestone down-hole dammed closes the anti-method of harnessing the river that stifled lean phase combines, the tool of step (4)
Body operating process is as follows: utilize karsts developing area vertical zonality, determines the degree of depth and the orientation of each injected hole, by " first reconnoitre hole,
Grouting behind shaft or drift lining hole, a hole are multiplex " principle use double dislocation mode to arrange inlet well in the plane, the degree of depth of injected hole should surpass
More mine hydrogeology condition demarcation line, the azimuth of injected hole controls 65o～85 oBetween, the spacing of injected hole is less than
2 times of slurry dilation angle.
What above-mentioned maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines, the tool of step (5)
Body operating process is as follows: in the subsidiary anticline ridge slip casting of described maokou limestone duplexsyncline, by described maokou limestone again
Formula is transformed into water proof band to oblique subsidiary anticline axle portion near zone, and subsoil water is enclosed in described subsidiary anticline ridge and ground
Between Xia Shui feeding area, and away from the nearest secondary of subsidiary anticline ridge in oblique depressed area, subsoil water also passes through
Projective water point pours in buttoned-up down-hole high energy consumption, the exploiting field of safe power supply drainage condition difference；Groundwater trapping is at slip casting tunnel water
Flat, stop superficial part one step subsoil water to permeate to deep.
What above-mentioned maokou limestone underground grouting dammed closes the anti-method of harnessing the river that stifled lean phase combines, the tool of step (6)
Body operating process is as follows: due to the existence of water proof band, and secondary lies prostrate buttoned-up high energy consumption, safe power supply row in oblique depressed area
The exploiting field of water condition difference essentially becomes the huge sump in mining area, during night shift, is stored by subsoil water in huge sump, mornig shift electricity price
Low-valley interval, drains into earth's surface by storing the subsoil water in huge sump.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is directed to south maokou limestone base plate karsts developing area vertical zoning territory, colliery characteristic and there is duplexsyncline
Geological structure proposes, and under closed-in well, the preventing and treating that stifled lean phase combines (is i.e. closed in high energy consumption, the exploiting field of safe power supply drainage condition difference
"Off" in water method), the subsidiary anticline ridge at maokou limestone duplexsyncline base plate implements underground grouting, by subsoil water
The secondary dammed between subsidiary anticline ridge and infiltration area is to oblique depressed area, and is poured in by projective water point
Anti-the harnessing the river in method of stifled lean phase combination (is i.e. closed in down-hole high energy consumption, the exploiting field of safe power supply drainage condition difference closed
" block up ")；Groundwater trapping in slip casting tunnel level, is stoped superficial part subsoil water to permeate to deep so that lower level is opened by the present invention
The water yield adopted greatly reduces, and mine groundwater is raised to slip casting tunnel level, reduces maokou limestone dewatering funnel face, mining area
Long-pending, greatly reduce the probability occurring Karst geomorphy to subside；The present invention, stores in secondary to the most recessed at night shift period subsoil water
Fall into lie prostrate on position and be turned off in exploiting field (having essentially become the huge sump in mining area), morning electricity price low-valley interval, will store in
The subsoil water of huge sump drains into earth's surface (i.e. closing anti-" dredging " harnessed the river in method that stifled lean phase combines).Due under karst region
Water dams in slip casting tunnel level, greatly reduces draining lift, saves a large amount of electricity charge, increases economic efficiency.
Accompanying drawing explanation
Fig. 1 maokou limestone duplexsyncline board structure and karsts developing area vertical zoning territory schematic diagram.
Anti-the harnessing the river that the stifled lean phase in pass that Fig. 2 maokou limestone duplexsyncline ridge underground grouting dams combines is shown
It is intended to.
Fig. 3 underground grouting pore size distribution schematic diagram.
Fig. 4 is the A-A sectional view in Fig. 2.
Fig. 5 is the B-B sectional view in Fig. 3.
1, high energy consumption, the exploiting field 2 of safe power supply drainage condition difference, solution cavity development belt 3, fracture extension zone 4, karst are not
Development belt 5, mine hydrogeology condition demarcation line 6, subsidiary anticline ridge 7, the injected hole degree of depth 8, water proof band 9, prominent
Water spot 10, slip casting tunnel 11, lower level 12, huge sump 13, draining lift 14, injected hole 15, slurry dilation angle
16, top board 17, elementary stream 18, injected hole azimuth 19, subsidiary anticline 20, secondary to oblique 21, spine 22, groove portion 23,
Infiltration area 24, maokou limestone duplexsyncline base plate 25, secondary are to oblique depressed area 26, coal measure strata.
Detailed description of the invention
With embodiment, the present invention is further described below below in conjunction with the accompanying drawings.
Colliery, south maokou limestone floor water-bearing rock, by repeatedly strong tectonism, defines the duplexsyncline of complexity mostly
Structure, described duplexsyncline structure refers to by some subsidiary anticlines 19, secondary large-scale to tiltedly to oblique 20 one combined
Structure, highest portion position, groove portion 22 that the spine 21 of the most same fold swells for subsidiary anticline are secondary to tiltedly caving in
Low position.The present invention makes full use of karsts developing area vertical zoning territory characteristic and the duplexsyncline in maokou limestone water-bearing layer, colliery, south
Geological structure, forced-ventilated drainage simply of correcting one's mistakes is to close the guarded drainage mode that stifled lean phase combines, and is greatly promoted the anti-row of mine
Water security protects well ability, especially big raising mine economic profit.Specific implementation method is as follows:
(1) high energy consumption, the exploiting field of safe power supply drainage condition difference under closed-in well.By the coal mining to Nei Ge exploiting field, mining area
The statistical data for many years of amount, displacement and water yield is analyzed, and determines adopting of down-hole high energy consumption, safe power supply drainage condition difference
District 1, forever closes it, and withdraws from all devices closing exploiting field.
(2) elevation range in maokou limestone karsts developing area vertical zoning territory is determined.By mining area maokou limestone is bored
Hole, analysis solution cavity rate, along the Changing Pattern on stratum, obtains the maokou limestone karst development degree three band domain in vertical direction: molten
Hole development belt 2, fracture extension zone 3 and karst aplasia band 4, more develop toward deep according to maokou limestone, solution cavity cranny development rate
The lowest Changing Pattern, determines the separating surface that mine hydrogeology condition demarcation line 5 is fracture extension zone and karst aplasia band.
(3) the maokou limestone that underlies of exploiting field 1 of buttoned-up down-hole high energy consumption, safe power supply drainage condition difference compound to
In inclined bottom plate 24, choose the subsidiary anticline ridge 6 nearest from infiltration area 23 and design target area as underground grouting, enter
, between above-mentioned subsidiary anticline ridge 6 and infiltration area 23, at least there is a secondary to oblique depressed area in one step
25。
(4) degree of depth and the orientation in maokou limestone underground grouting hole are determined.Expand according to karsts developing area vertical zonality and slurry
Dissipate radius 15, determine the injected hole degree of depth 7 of each injected hole 14, injected hole azimuth 18 and the spacing of injected hole, by " first reconnoitring
Hole, grouting behind shaft or drift lining hole, a hole are multiplex " principle, use double dislocation mode to arrange injected hole in the plane, the injected hole degree of depth 7 should
Surmounting hydrogeologic condition demarcation line 5, injected hole azimuth 18 controls 65o～85 oBetween, the spacing of injected hole is less than slurry
2 times of bulk diffusion radius 15.
(5) maokou limestone subsoil water under Vatch basin.On the subsidiary anticline ridge 6 of above-mentioned maokou limestone duplexsyncline
Choose suitable slip casting tunnel 10, subsidiary anticline axle region is carried out slip casting, subsidiary anticline axle portion near zone is transformed into
Water proof band 8, subsoil water is enclosed in from the nearest secondary of subsidiary anticline ridge 6 in oblique depressed area 25, subsoil water
And poured in by projective water point 9 and secondary in oblique depressed area 25, to lie prostrate buttoned-up high energy consumption, the adopting of safe power supply drainage condition difference
In district 1；So groundwater trapping is in slip casting tunnel 10 level, stops superficial part subsoil water to permeate to deep.Lower level 11 is opened
The water yield adopted greatly reduces, and mine groundwater is raised to slip casting tunnel 10 level, reduces mining area maokou limestone dewatering funnel
Area, greatly reduces the probability occurring Karst geomorphy to subside.
(6) electricity price low-valley interval draining.Due to the existence of water proof band 8, secondary volt in oblique depressed area 25 is turned off height
The exploiting field 1 of energy consumption, safe power supply drainage condition difference essentially becomes the huge sump 12 in mining area, and the night shift period, subsoil water stores
In above-mentioned huge sump 12, mornig shift electricity price low-valley interval, drain into earth's surface by storing the subsoil water in huge sump 12.Due to thatch
After mouth limestone groundwater trapping, subsoil water stores in above-mentioned huge sump 12, stops superficial part subsoil water to permeate to deep, huge
Sump 12 to the draining lift 13 of top drainage than the draining lift much less of deep mining.Save a large amount of electric energy, and
Draining during electricity price low ebb, is greatly saved the electricity charge, increases economic efficiency.
Embodiment:
The administrative Meitanba mining area of dark fund epoch Changsha, Hunan mining industry company limited is a well-known throughout the country inundation mine area, ore deposit
District existing five mu of punchings, Xifeng logical sequence, pools, Zhushan County three are to mine, and Mine area geologic structure is medium, and hydrogeologic condition is the most complicated, along with ore deposit
The continuous pit haulage system of well, mine dewatering funnel constantly expands, and drainage area has currently reached 368km2.Have been enter into later stage deep to open
Adopting the stage, production cost remains high, waterproof guarantor's well arduous task, and pressure is huge, is only harnessed the river by earth's surface, closed-in well bottom
Divide the exploiting field of high energy consumption, safe power supply drainage condition difference, the mining area of essential safety, high benefit could be reached comprehensively, make mining area shine
Generation machine.The enforcement region of the present invention is Dong Yi exploiting field, colliery, the pool, Zhushan County.This region is positioned at Meitanba mining area the east, for mining area
, there are Yang Quan lake groundwater run-off band, great achievement bridge groundwater run-off band in the main feeding area of subsoil water, and He Shiqiao groundwater run-off band is altogether
With supply, abundant water.Use of Geophysical Data shows that this groundwater level is mild, and hydraulic gradient is 3-5 ‰, the most past east, this region,
Catchment area is the biggest.And disclose through down-hole, eastern seven crossdrift 34 transportation roadway-170 flowing water lanes, colliery, the pool, Zhushan County-170, for
The subsidiary anticline ridge of Tang Hejia gulf, Zhushan County duplexsyncline, this position underlies Dong Yi exploiting field, colliery, the pool, Zhushan County, is bamboo
Dong Yi exploiting field, pond on a hill colliery maokou limestone duplexsyncline base plate, the subsidiary anticline protuberance nearest away from the main feeding area of eastern subterranean water
Position.Use the present invention, specifically comprising the following steps that for the treatment of groundwater
(1) exploiting field that high energy consumption under closed-in well, safe power supply drainage condition are poor.Dong Yi exploiting field, colliery, the pool, Zhushan County includes-
235 levels ,-207 levels are the exploiting field 1 that high energy consumption, safe power supply drainage condition are poor.Dong Yi exploiting field, colliery, the pool, whole Zhushan County is existing
There is beveloped coal reserve only 7.0 ten thousand tons, and wing exploiting field, east inflow rate of mine water is 8800m to the maximum3/ h, average out to 6400 m3/ h, accounts for complete
The 70% of company's inflow rate of mine water.It is first shut off-235 horizontal Dong great lane floodgate wall gate valves, withdraws from that-235 levels are all to be set as far as possible
Standby.According to the projective water point water yield mutation analysis of east, colliery, the pool, Zhushan County wing, progressively close the whole exploiting field of the wing, east, colliery, the pool, Zhushan County.
(2) elevation range in maokou limestone karsts developing area vertical zoning territory is determined.Well is obtained according to Meitanba mining area boring
It is 2.1% that the solution cavity rate of lower different level is respectively as follows :-120m～-200 m solution cavity rate, and-200 m～-250 m solution cavity rates are
1.31% ,-250 m～-300 m solution cavity rates are 0.14%, and-300～-400 solution cavity rates are 0.1%.Obtain from drilling result analysis
The elevation range of the solution cavity development belt 2 in this mining area is :-120m～-200 m, and the elevation range of fracture extension zone 3 is :-200 m
～-240 m, karst aplasia band 4 elevation range is :-240 m area below.Visible maokou limestone more develops toward deep,
The Changing Pattern that solution cavity cranny development rate is the lowest, determines that mine hydrogeology condition demarcation line 5 is located for absolute altitude-240m.
(3) the maokou limestone that underlies of exploiting field of buttoned-up down-hole high energy consumption, safe power supply drainage condition difference compound to
In inclined bottom plate 24, choose the subsidiary anticline ridge 6 nearest away from infiltration area 23 and design target area as underground grouting.Coal
Main nourishment source, mining area, charcoal dam is the ground such as Yang Quan lake, great achievement bridge, has Yang Quan lake groundwater run-off band, great achievement bridge groundwater flow
Band and He Shiqiao groundwater run-off band feed jointly, and the water yield is very abundant, and the average hydraulic gradient is 5 ‰.Colliery, the pool, Zhushan County-
170 eastern seven crossdrift 34 transportation roadway-170 flowing water lanes, the subsidiary anticline for Tang Hejia gulf, Zhushan County duplexsyncline swells
Position 6, this position underlies Dong Yi exploiting field, colliery, the pool, Zhushan County, be the maokou limestone base plate in Dong Yi exploiting field, colliery, the pool, Zhushan County compound to
Tiltedly, the subsidiary anticline ridge 6 nearest away from the main feeding area of eastern subterranean water, play " ridge ", " hump " and cross water bottle neck
Effect, is underground grouting design target area, maokou limestone tunnel.
(4) degree of depth and the orientation in maokou limestone underground grouting hole are determined.At 34 transportation roadway of colliery, the pool, Zhushan County absolute altitude-170m
In the subsidiary anticline ridge of Tang Hejia gulf, Zhushan County duplexsyncline, as slip casting tunnel 10, carry out underground grouting, root
According to karsts developing area vertical zonality and slurry dilation angle 15, determining that the injected hole degree of depth 7 is 80m, the azimuth 18 of slip casting is about
75o, injected hole spacing is 15m, and wherein injected hole degree of depth 80m surmounts hydrogeologic condition demarcation line 5, by " first reconnoitring hole, note afterwards
Slurry hole, a hole is multiplex " principle, use double dislocation mode to arrange injected hole in the plane.After slip casting completes, maokou limestone is multiple
Formula has been transformed into water proof band 8, water proof band 8 total length 450 meters to oblique subsidiary anticline axle portion near zone.
(5) maokou limestone groundwater trapping.The subsidiary anticline axle portion near zone of maokou limestone duplexsyncline be transformed into every
After water band 8, the secondary that subsoil water is enclosed between subsidiary anticline ridge 6 and infiltration area is to oblique depressed area 25
In, and pouring in buttoned-up high energy consumption, the exploiting field 1 of safe power supply drainage condition difference by projective water point 9, groundwater trapping is above-mentioned
It is turned off in exploiting field, thus stops superficial part subsoil water to permeate to deep.After maokou limestone groundwater trapping, east, colliery, the pool, Zhushan County wing
The subsoil water outburst amount of absolute altitude-170m level reaches 2600 m3/ h, and lower horizontal 11(be-270 levels) water yield be only 700
m3/h.It is owing to the subsoil water overwhelming majority is gushed out from east, colliery, the pool, Zhushan County wing-170m level, the least from the water yield of-270 levels,
So will reduce about 100 meters from mine to the lift of top drainage.
(6) electricity price low-valley interval draining.Due to the existence of water proof band 8, what secondary lied prostrate in oblique depressed area 25 is turned off
High energy consumption, the exploiting field 1 of safe power supply drainage condition difference essentially become the huge sump 12 in mining area, night shift subsoil water store in
In huge sump, cumulative volume about 30000 m3, by 2600 m3/ h flow can water-retention 11.5 hours, night shift can be realized and stop draining, enter
Row water-retention, mornig shift electricity price low-valley interval drains, and compared with electricity price peak interval of time, uses mornig shift electricity price low-valley interval draining, its row
Water power price differential 0.4 yuan/degree.
Use the present invention, it is possible to reduce draining lift 100 meters, every year can saves energy 2732.6 ten thousand degree, minimizing labour force
Recruitment 48 people, utilizes electricity price low-valley interval draining, year can power cost saving 10,930,000 yuan, simultaneously because east the wing close after, whole ore deposit
Draining cost in district's reduces, and can reduce total lease production, the Yanchang Area length of service, and social benefit is the most clearly.
Claims (7)
1. the anti-method of harnessing the river that the pass that maokou limestone underground grouting dams-stifled-lean phase combines, comprises the steps:
(1) high energy consumption, the exploiting field of safe power supply drainage condition difference under closed-in well；
(2) elevation range in maokou limestone karsts developing area vertical zoning territory is determined；
(3) at the bottom of the maokou limestone duplexsyncline underlied in the exploiting field of buttoned-up down-hole high energy consumption, safe power supply drainage condition difference
In plate, choose the subsidiary anticline ridge nearest away from infiltration area and design target area as underground grouting；
(4) degree of depth and the orientation in maokou limestone underground grouting hole are determined；
(5) maokou limestone subsoil water under Vatch basin；
(6) electricity price low-valley interval draining.
What maokou limestone underground grouting the most according to claim 1 dammed closes the anti-method of harnessing the river that stifled lean phase combines,
The specific operation process of step (1) is as follows: by the statistics for many years of coal mining output, displacement and water yield to Nei Ge exploiting field, mining area
Data are analyzed, and determine the exploiting field of down-hole high energy consumption, safe power supply drainage condition difference, it are forever closed, withdraw from closedown and adopt
The all devices in district.
What maokou limestone underground grouting the most according to claim 1 dammed closes the anti-method of harnessing the river that stifled lean phase combines,
The specific operation process of step (2) is as follows: by holing mining area maokou limestone, analyzes the solution cavity rate change rule along stratum
Rule, obtains the maokou limestone karst development degree three band domain in vertical direction: solution cavity development belt, fracture extension zone and karst are not
Development belt；According to maokou limestone karstic development pattern, determine that mine hydrogeology condition demarcation line is fracture extension zone and karst
The separating surface of aplasia band.
What maokou limestone underground grouting the most according to claim 1 dammed closes the anti-method of harnessing the river that stifled lean phase combines,
The specific operation process of step (3) is as follows: find out groundwater in mining area feeding area, runoff zones, stratigraphic sequence and geological structure,
In the down-hole high energy consumption closed, the maokou limestone duplexsyncline base plate that underlies of exploiting field of safe power supply drainage condition difference, choose away from
The nearest subsidiary anticline ridge in infiltration area designs target area as underground grouting, above-mentioned subsidiary anticline ridge and
A secondary is at least there is to oblique depressed area between infiltration area.
What maokou limestone underground grouting the most according to claim 1 dammed closes the anti-method of harnessing the river that stifled lean phase combines,
The specific operation process of step (4) is as follows: according to karsts developing area vertical zonality and slurry dilation angle, determine each injected hole
The degree of depth and orientation, use double dislocation mode to arrange in the plane by the principle of " first reconnoitre hole, grouting behind shaft or drift lining hole, a hole multiplex "
Inlet well, the degree of depth of injected hole should surmount mine hydrogeology condition demarcation line, and the azimuth of injected hole controls 65o～85 oBetween, the spacing of injected hole is less than 2 times of slurry dilation angle.
What maokou limestone underground grouting the most according to claim 1 dammed closes the anti-method of harnessing the river that stifled lean phase combines,
The specific operation process of step (5) is as follows: in the subsidiary anticline ridge slip casting of maokou limestone duplexsyncline, by described secondary
Anticlinal axis portion near zone is transformed into water proof band, and subsoil water is enclosed between subsidiary anticline ridge and infiltration area,
And from the nearest secondary of subsidiary anticline ridge in oblique depressed area, subsoil water being poured in by projective water point is turned off
Down-hole high energy consumption, safe power supply drainage condition difference exploiting field；Groundwater trapping, in slip casting tunnel level, stops superficial part subsoil water
Permeate to deep.
What maokou limestone underground grouting the most according to claim 1 dammed closes the anti-method of harnessing the river that stifled lean phase combines,
The specific operation process of step (6) is as follows: due to the existence of water proof band, and secondary volt in oblique depressed area is turned off exploiting field essence
On become the huge sump in mining area, during night shift, subsoil water is stored in huge sump, mornig shift electricity price low-valley interval, will store
Subsoil water in huge sump drains into earth's surface.
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