CN102562069B - The fluid-filled replacement exploitation in coal seam method on high artesian body - Google Patents
The fluid-filled replacement exploitation in coal seam method on high artesian body Download PDFInfo
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Abstract
The filling replacement exploitation technology in coal seam on a kind of high artesian body that the invention discloses passes through the addressing of filling and injecting slurry station, down-hole feeding boring and grout pipe line design, it is high that the techniques such as roadway workface layout can reach consolidated fill bulk concentration, good flowing properties, entirely plane system is from the interpolation of material, stirring, conveying all achieves Automated condtrol, possess simple to operate, monitoring in real time, it is difficult to plugging, the features such as intensity is suitable, workable, achieve one exploiting field of service, a tunnel, reduce drivage ratio, improve resource recovery, the safest extraction is threatened coal seam by water, solve again gangue to take up an area, environmental pollution, the problems such as surface subsidence, improve coal recovery rate, economic benefit, social benefit and ecological benefits are notable.
Description
One, accompanying method field
Type of the present invention relates to a kind of pit mining method, a kind of recovery method preventing and treating water damage.
Two, background method
With extension and the prolongation of the length of service of pit mining level, coal amount ratio is threatened to increase year by year, by water prestige by water
Side of body degree is the most serious.As a example by Feicheng Coalfield, Feicheng Coalfield is that hydrogeologic condition is extremely complex, is national well-known flood
, since the lower group coal of nineteen sixty-five exploitation, there is Water Inrush more than 300 times in mining area, the water yield is more than 1000m38 times of/h, maximum prominent
The water yield is 32970m3/ h, floods well 4 times, and waterflooding is flat once floods exploiting field once, and the water yield is more than 30m3/ h has 125 times, causes huge
Big economic loss.At the end of cut-off 2010, coal amount is threatened to account for the 70.2% of mining area recoverable reserves by water.In terms of water hazard prediction to the greatest extent
Pipe has done substantial amounts of work, explores some ways, achieves some experiences, but there are still many difficult problems, can't be from root
Solving water damage in basis to threaten, the moment exists floods the danger of well, analyze reason have following some:
(1) complicated hydrogeological conditions: is structure development, especially buried structure grow, rift structure make coal seam and
Basal water boil on the nape opposite the mouth contacts, and threatens degree big.Two is that basal water (Xu Jia village limestone, Ordovician limestone) watery is strong,
Spacing is little, and hydraulic connection is close, and nourishment source is sufficient, and difficulty of governance is big.Three mining elevations are deep, hydraulic pressure big, ore deposit pressure collapse dept
(within 2003, respectively reached by University Of Science and Technology Of Shandong's actual measurement Cao Zhuan ore deposit 8812,9604 floor undulation maximal destruction degree of depth greatly
36.5m, 14.2m), gushing water probability is big.Four is that working seam Xia Juxujia village limestone spacing is little, and general about 18m, at hydraulic pressure
Exploiting direct gushing water under effect with ore deposit pressure, ash spacing difficult to understand is little, meets latent crack or tomography may result in Ordovician karst water and directly highlights,
Threaten mine safety production.
(2) hydrogeologic condition is unclear, and along with the deepening of pit mining level, degree of prospecting is low, and hydrological data is few, structure
Unclear, the watery pole heterogeneity in water-bearing layer, the connectivity in crack is poor, and preventing and treating water work difficulty is big.
(3) water control measures can't adapt to completely complexity hydrogeologic condition, although take expansion drainability,
Set up waterproof isolation facility, floor grouting is reinforced, is stopped the measures such as barrier pillar, localized mass section curtain cut off current and draining depressurization,
But still it cannot be guaranteed that not water outlet, mine nevertheless suffers from water damage and threatens.But existing water control measures can not adapt to deep completely
Complicated hydrogeologic condition, is restricted by deep height hydraulic pressure and water-bearing layer cranny development rule, and existing grouting equipment can not
Meeting the requirement of slip casting, in hole, setting-out does not enters, it is impossible to grout transformation；Thin fall is difficult to find that again rich water crack；Ore deposit, deep pressure is aobvious
Now violent, plate destructing depth is big, easily causes gushing water；Ash top karstic development pattern difficult to understand and watery are unclear, there is presently no
Find the effective anti-method of harnessing the river administering ash difficult to understand.Therefore new anti-method of harnessing the river is explored extremely urgent.Carry out filling mining energy
Reduce ore deposit and press the collapse dept manifested and to base plate, water hazard prediction is played a key effect.
The research of the Water Inrush problem caused working seam on artesian water for many years, Chinese scholars has carried out some
Useful exploration and trial.Filling method application is relatively wide abroad, from the thirties in 20th century so far, Canadian, Australian,
Filling method is successively applied in metal mine exploitation by the states such as the former Soviet Union, Germany, South Africa, and main purpose prevents ground settlement, takes
Obtained remarkable result.But utilize filling mining to solve to prevent and treat water problems the most not find on relevant document at present.
Current domestic filling mining one is with the solid such as spoil, flyash as charges.Ore deposit, Xingtai is with half-full
Carry out filling with spoil and flyash, it is therefore an objective to reclaim industry solid waste, reduce the impact on above ground structure, the method pair
Control ground settlement effect poor.Two is with high concentration paste body filling as charges.What success used at present has Jining peace coal
Ore deposit, Xin Kuang group Sun Cun colliery, Zibo Wangzhuang Coal Mine.Jining Taiping coalmine Paste-filling System was formally thrown in May, 2006
Enter to use, use slip preparation and the carrying method of Germany, invest more than 6,000 ten thousand yuan, add specially with nasal mucus river fluvial sand, fly ash in electric power plant
Being configured to paste slip with cementitious matter and water, mastic concentration controls, 75%～80%, to be pumped to underground filling exploiting field；New ore deposit collection
Tuan Sun village colliery Paste-like body gravity flow placement method, this project put into operation in March, 2006, through the system calibrating examination of earth's surface accident hole
Test stage, down-hole Abandoned Tunnel pilot-plant test stage, move towards longwell Paste-like body filling industry experimental stage, face upward plagioclase wall like cream
The developmental research in 4 stages of body filling mining, finally achieves successfully.The method is with cement, flyash, gangue and early strength agent
For casting resin, make according to a certain ratio 72%～75% high concentration like original text somaplasm body, it is achieved that the gravity flow of 3 times of stowing gradients is defeated
Send, effectively control surface subsidence.The high-water expansion material that Zibo Wangzhuang Coal Mine has carried out in recent years based on flyash grinds
Studying carefully, filler is mainly flyash, water and swelling agent, slurry concentration 60%, expansion rate 8～10%, it is achieved that distance is flow automatically
Carrying and actively connect top problem, filling effect is preferable.
Said method is used to railways and water-bodies, it is therefore an objective to solves ground settlement problem, but truly utilizes filling
Exploitation solves on high artesian body safely mining of coalbed method and manifests rule in this filling state lower shoe collapse dept, ore deposit pressure
Rule, surface strata movement rule scheduling theory the most still belong to the first.
The fluid-filled replacement exploitation in coal seam technique study on high artesian body is carried out in mining area, Feicheng, is not only filling mining and grinds
Studying carefully the model combined with scientific practice, its filling mining theoretical research result will build on deep fractures exploitation high artesian body
The integrated approach approach of karst water preventing and treating, provides valuable experience for reference and reference for the preventing and treating of northern China coalfield base plate karst water
Data, abundant and development China mine water preventing and treating theory and method.
Three, summary of the invention
Following methods scheme is used for solving the above method problem present invention
1, coal seam filling replacement exploitation method employing following steps on a kind of high artesian body:
A: the determination of filling and injecting slurry station addressing；
B: filler and filling process determine；Filler: rubber solid material, spoil powder, flyash, proportions's relation
For: 1.8:6:6；Filling serosity mass percent concentration: 60%, proportion: 1.56；Filling process is: filling preparation → water-filling is clear
Pipe → mortar pushes away water → spoil slurry and pushes away mortar → mortar and push away spoil slurry → water and push away mortar → water-filling pigging → high-pressure blast blowpipe, filling
System is divided into ground and down-hole two parts;Ground system by material system processed, aggregate-storing system, power supply water system, automatically control and
Metering system, monitoring communication system, emergency disposal system totally six part composition；Downhole system is by pipeline transport system and work surface
Shelves slurry system two parts composition altogether
C: down-hole feeding boring and grout pipe line design；
D: roadway workface is arranged
E: coal winning technology coal winning technology uses: termination machine nest and work surface pressure are bombarded eye, powder charge → explosion → start nest, cut
Coal → burst pressure big gun → pine machine is coaling → moves drag conveyor → Zhi Jiben pillar → prop drawing (4 cuttves of mining, prop drawing 3 row) → pressure gear
Slurry curtain → return last row's pillar → making block pulp wall → filling → obturator solidification.
In said method scheme, in filling system, ground system mainly consists of:
(1) material system processed: by a disintegrating machine, screening machine, vertical elevator, 7 spoil broken material conveyings
Belt, a forklift composition；
(2) aggregate-storing system: flyash silo 2；One, rubber solid material tank,；One, spoil powder tank,；Spoil powder storing canopy one
Individual；
(3) power supply water system；
(4) automatically control and metering system: include main control device, collection control equipment, pneumatic control equipment, blender, spiral
Conveyer, measure control equipment；
(5) monitoring communication system: include that TV monitor system, photographic head, GCS Ground Communication System, filling pipeline communication set
Standby；
(6) emergency disposal system: surface grout injection station sets Emergent water tank, flush water pump and pressure fan.
This method scheme is used mainly to have following methods effect: (1) can effectively control Surrounding Rock Movement, reduces mine pressure
Manifesting intensity, reduce and shift a bearing capacity, suppression base plate is heaved, and obstruction base plate is through with base plate rich water rock stratum, reduces the end
Plate collapse dept, it is achieved safe working on artesian water, change the purpose of coal with cash.
(2) the consolidated fill bulk concentration formed is high, and good flowing properties, in Paste-like body state, is carried by pipeline self
To goaf, efficiently solve the hidden danger such as spontaneous combustion in goaf, old empty water, Floor water, harmful gas, again limit rock stratum and move
Dynamic.
(3) entirely plane system from the interpolation of material, stir, carry and all achieve Automated condtrol, possess simple to operate,
Monitor in real time, be difficult to plugging, the intensity feature such as suitably, workable.
(4) achieve one exploiting field of service, a tunnel, reduce drivage ratio, improve resource recovery.
(5) the method is seriously to be threatened the safe working in coal seam to provide possibility by water, and the safest extraction is threatened by water
Coal seam, solves again the problems such as gangue occupation of land, environmental pollution, surface subsidence, improves coal recovery rate, economic effect
Benefit, social benefit and ecological benefits are notable.
Four, detailed description of the invention
Present embodiment uses shortwall advancing coal-mining method, and high-grade conventional mining mode is mined.DW-150 type coal-winning machine falls,
Coaling, SGB-150C type scratch board conveyor fortune coal, hydraulic prop band cap coupled columns supporting roof, see the Zhi Huifang of four times
Formula, spoil slurry filling method management top board, full-seam mining, advance of working cycle 1.0m, take to exploit continuously, be spaced the mode of filling,
Each advance of the face 4.0m filling is once.
Coal winning technology selects: termination machine nest and work surface pressure bombard eye, powder charge → explosion → start nest, coal cutting → burst pressure
Big gun → pine machine is coaling → moves drag conveyor → Zhi Jiben pillar → prop drawing (4 cuttves of mining, prop drawing 3 row) → pressure block pulp curtain → return
Rear row's pillar → making block pulp wall → filling → obturator solidification.
The minimum and maximum distance of face roof under control
Work surface uses 3-4 row's control top mode, sees four times one, and the maximum distance of face roof under control is 4.4m, and the minimum distance of face roof under control is 3.4m；Adopt
At the oblique stubble of coal machine penetration of a cutting tool, the distance of face roof under control can expand 5.4m to.
Filling process
Work surface filling
Work surface uses the control top mode seeing four times, and work surface often pushes to adopt 4m, makes a block pulp curtain, carries out a cash
Stone slurry filling.
In order to ensure the reliability of goaf filling, usability and economy, with hydraulic prop, block pulp cord, build
Build and carry out filling with steel form making barricade.
Filling process flow process
Filling preparation → water-filling pigging → mortar push away water → spoil slurry push away mortar → mortar push away spoil slurry → water push away mortar →
Water-filling pigging → high-pressure blast blowpipe.
Block pulp wall makes
The making of block pulp wall is divided into 2 parts, and a part belongs to work surface and stays along sky and set transport and stay lane to lean on a gang of gear in goaf
Slurry wall, another part belongs to work surface circulation block pulp wall.
1. the making material of block pulp wall: the DZ2.0-2.5 hydraulic prop of face timbering use, block pulp cord
(100m × 3m), belt, construction(al)steel template, iron wire etc..Before making block pulp wall, it is necessary to get out make the various materials of block pulp wall
Material.
2. set transportation roadway help by goaf two, along the empty making stayed and set air intake lane by goaf a gang of block pulp wall along empty staying:
Float cash cleaning up float coal by a gang of base plate in goaf, cord lower end be folded to goaf 0.2-0.5m, be laid on base plate,
Being pressed on cord with spoil, then push down cord 0.2 m with plate-girder, a hydraulic prop on plate-girder, post, away from 0.5m, is mentioned
The other end of cord, pushes down the upper end of cord with plate-girder, is risen by hydraulic prop and withstands plate-girder, then props up at monomer hydraulic
Use construction(al)steel template as main block pulp body of wall inside post, drain into top board and last row's pillar of work surface successively.Building
Being fixed on hydraulic prop with steel form iron wire, support force of single-column reaches requirement equal with work surface, and pillar is all fastened
Restrict anti-down.
3. the making of work surface circulation block pulp wall: when work surface Zhi Qisi arranges pillar, at goaf side, the 2nd row reciprocal props up
Post belt and block pulp curtain cloth set up divider wall.Block pulp curtain cloth lower end is folded to old empty side 0.5m, all presses tight with spoil, Hui Wan
After four row's pillars, pull-up block pulp cord, upper end uses stigma to push down block pulp cord, cord stigma to be exposed 200mm, external 2 layers
Belt is fastened from bottom to top on last row's pillar.Belt to block cord with big basketry from base plate 300mm at the bottom of belt.Keep off skin
Between last row's coupled columns, install close standing props after band, block belt.Stubble is pressed to sew on conjunction between block pulp curtain and block pulp curtain
Tight connection.
4. stay along sky and set transportation roadway, stay along sky and set air intake lane and work surface block pulp wall strictly to set quality, the total engineering in ore deposit
Teacher organizes special messenger to check and accept, qualified after can carry out filling.
(1) 1, filling system
Filler: rubber solid material, spoil powder, flyash, proportions's relation is: 1.8:6:6.Filling serosity quality hundred
Proportion by subtraction concentration: 60%；Proportion: 1.56.
Filling intensity:
Filling method: filling serosity flows automatically to underground work face goaf through feedhole and filling pipeline.Fill up ground face
Mouth absolute altitude :+114.4m, absolute altitude :-240m at the bottom of hole, hole depth: 354.4m, work surface absolute altitude :-360～-397.7m；Filling pipe
Road length: 1850m；The filling discrepancy in elevation: 512m, stowing gradient: δ=3.6.
Filling system: whole system divides ground and down-hole two parts.System from the interpolation of material, stir, carry and achieve
Automatically control, there is monitoring simple to operate, real-time, be difficult to plugging, the intensity feature such as suitably.Ground system is by material system processed, storage
Material system, power supply water system, automatically control and metering system, monitoring communication system, emergency disposal system totally six parts composition；
Downhole system is starched system two parts altogether by pipeline transport system and work surface shelves and is formed.
Ground system:
(1) material system processed: by a disintegrating machine, screening machine, vertical elevator, 7 spoil broken material conveyings
Belt, a forklift composition.Broken, screening, hoisting power are 100～150t/h, spoil product grading≤5mm, system synthesis
Stowage capacity is 100～120 t/h.
(2) aggregate-storing system: flyash silo 2, volume 100 m3/；One, rubber solid material tank, volume 100 m3；Spoil powder
One, tank, volume 150m3；One, spoil powder storing canopy, can store 3000m3；4 belt conveyors and a feeding forklift.
(3) power supply water system: set a house substation, the transformator of two 800KVA and corollary equipment, inlet wire electricity
Pressure 6KV, output voltage 380V and 220V, equipment total load 665KW, wherein crushing system 440KW, pulping system 225KW, additionally
Control and illuminator 25KW.Filling water source is down-hole sewer, and water supply capacity is 200m3/ h, including cistern (500m3), 5
Platform water pump (wherein 2 standby), pipeline 5 times, measure control equipment 1 set etc..
(4) automatically controlling and metering system: include that main control device 1 overlaps, collection control equipment 1 overlaps, and automatically controls a little 28, gas
Dynamic control equipment is a set of, 2, blender, conveying worm 4, measure control equipment 4 set etc..Possess simple to operate, metering standard
The feature such as really.
(5) monitoring communication system: set TV monitor system 1 and overlap, photographic head 16, ground landline telephone 2, Personal Handyphone System 4
Portion, transmitter receiver 6, underground filling pipeline is installed along the line and is fixed 5 phones, it is achieved that communication is unimpeded and the visualization in crucial place
Management.
(6) emergency disposal system: surface grout injection station sets each 1 of Emergent water tank 1, flush water pump and pressure fan, slip casting
Journey once have a power failure or cuts off the water, processing in time.
Downhole system:
(1) pipeline transport system: stood hole by two ground and down-hole send slurry pipeline to form.Aperture Φ is entered under the complete opening of vertical hole
The Ceramic Composite 350m of resistance to pipe, 6m of 146 × 13mm mono-, welding manner connects；Down-hole grout pipe line Φ 108 × 6mm, length
1850m, tube head is formed by the compacting of special book joint setting machine, and high pressure Ka Lan docks, and every hundred meters set blind plate threeway one, and key position is installed
Pressure gauge, it is achieved to monitoring and emergency processing in real time under whole pipeline filling state.
(2) work surface shelves slurry system: be made up of 3 parts, one is the making of work surface shelves slurry curtain: shelves slurry cloth is drainage
Woven bag, specification is length × wide=100 × 3m, accomplish during making that the fixing back of the body of upper pillar pawl is real, the fixing compacting of lower disintegrating slag, in
Between with shelves laitance coating band auxiliary support, back is by caving row's close standing props being fixed thereon；Two is that work surface slips a gob side entry retaining side
Shelves slurry wall making, shelves slurry wall use shelves slurry cloth, shelves slurry steel form and close standing props make, accomplish on bind, lower compacting, wall
Outside sets post of hesitating to advance and fixes, and prevents filling serosity from outflowing.
Roadway layout
For preventing serosity from outflowing, reducing the pressure of gob side entry retaining side shelves cash wall, tunnel is all arranged, during back production by coal seam tendency
Face upward and adopt.For ease of stoping-and-filling, will be that 81006 work surfaces moving towards to arrange are divided into I, II, III, IV 4 to tilt shortwall work originally
Face carries out back production filling, 81,006 I sections of work surface sand ofves the most successively, and hand-pulled noodles is returned by 81,006 II, III section
Adopt.81006I face only arranges that is cut an eye, a return airway, and transportation roadway is not at driving, but with adopting with pick, gob side entry retaining, makees
For following return airway；81006 II, III section of intermediate transportation lane that hand-pulled noodles only constructed, two sections of air intake lanes, III section work surface
Transportation roadway carries out gob side entry retaining, tunnel clear span 2.7m constructed, clear height 2m, section 5.4m2.Draft type is that " Z " font is led to
Wind, work surface driving reduces by a tunnel.
Claims (2)
1. a filling replacement exploitation method in coal seam on high artesian body, is characterized in that: employing following steps:
A: the determination of filling and injecting slurry station addressing；
B: filler and filling process determine；Filler: rubber solid material, spoil powder, flyash, proportions's relation is:
1.8:6:6；Filling serosity mass percent concentration: 60%, proportion: 1.56；Filling process is: filling preparation → water-filling pigging →
Mortar pushes away water → spoil slurry and pushes away mortar → mortar and push away spoil slurry → water and push away mortar → water-filling pigging → high-pressure blast blowpipe, filling system
It is divided into ground and down-hole two parts;Ground system by material system processed, aggregate-storing system, power supply water system, automatically control and measure
System, monitoring communication system, emergency disposal system totally six part composition；Downhole system is by pipeline transport system and work surface block pulp
System two parts composition altogether；
C: down-hole feeding boring and grout pipe line design；
D: roadway workface is arranged；
E: coal winning technology coal winning technology use: termination machine nest and work surface pressure bombard eye, powder charge → explosion → start nest, coal cutting →
Burst pressure big gun → pine machine is coaling → moves drag conveyor → Zhi Jiben pillar → prop drawing (4 cuttves of mining, prop drawing 3 row) → pressure block pulp curtain
→ return last row's pillar → making block pulp wall → filling → obturator solidification.
On high artesian body the most according to claim 1, coal seam filling replacement exploitation method, is characterized in that in filling system
Ground system mainly consists of:
(1) material system processed: by a disintegrating machine, screening machine, vertical elevator, 7 spoil broken material conveying skins
Band, a forklift composition；
(2) aggregate-storing system: flyash silo 2；One, rubber solid material tank, one, spoil powder tank, one, spoil powder storing canopy；
(3) power supply water system；
(4) automatically control and metering system: include main control device, collection control equipment, pneumatic control equipment, blender, helical feed
Machine, measure control equipment；
(5) monitoring communication system: include TV monitor system, photographic head, GCS Ground Communication System, filling pipeline communication equipment；
(6) emergency disposal system: surface grout injection station sets Emergent water tank, flush water pump and pressure fan.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102937035B (en) * | 2012-11-09 | 2014-10-15 | 四川省煤炭产业集团有限责任公司 | Method for rock mining and filling in mine goaf |
| CN104832174B (en) * | 2015-03-17 | 2016-10-19 | 太原理工大学 | The method that the other bilateral up second mining of whole filling of a kind of post pedals sky coal seam |
| CN104775818B (en) * | 2015-03-17 | 2017-01-18 | 太原理工大学 | Method for performing ascending re-mining on hollow coal bed by column with one completely-filled side |
| CN110924984B (en) * | 2019-11-29 | 2021-01-29 | 北京中科中电电力工程管理有限公司 | Tunnel grouting equipment and process |
| CN112360462B (en) * | 2020-12-18 | 2022-04-05 | 唐山立锦通科技有限公司 | Mining process for filling and grouting short-wall fully-mechanized mining gangue |
| CN115539122B (en) * | 2022-11-22 | 2023-02-28 | 山西正大恒通科技有限公司 | Coal gangue underground filling system and method |
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| CN1424275A (en) * | 2003-01-10 | 2003-06-18 | 中国矿业大学（北京校区） | Cementing materials for filling, slurry and preparing and filling processes |
| CN101555107A (en) * | 2009-02-19 | 2009-10-14 | 赤峰西拉沐沦(集团)公格营子煤业有限公司 | Coal mine consolidated fill technical skill |
| CN101881180A (en) * | 2010-06-04 | 2010-11-10 | 新汶矿业集团有限责任公司孙村煤矿 | Coal face paste-like filling method and slurry-baffling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1424275A (en) * | 2003-01-10 | 2003-06-18 | 中国矿业大学（北京校区） | Cementing materials for filling, slurry and preparing and filling processes |
| CN101555107A (en) * | 2009-02-19 | 2009-10-14 | 赤峰西拉沐沦(集团)公格营子煤业有限公司 | Coal mine consolidated fill technical skill |
| CN101881180A (en) * | 2010-06-04 | 2010-11-10 | 新汶矿业集团有限责任公司孙村煤矿 | Coal face paste-like filling method and slurry-baffling device |
| CN102101763A (en) * | 2010-12-10 | 2011-06-22 | 天地科技股份有限公司 | Paste for mine goaf filling and preparation system of paste |
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