CN103821558B - Coal mine gob filling mining and gob side entry retaining filling process - Google Patents
Coal mine gob filling mining and gob side entry retaining filling process Download PDFInfo
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- CN103821558B CN103821558B CN201410051780.2A CN201410051780A CN103821558B CN 103821558 B CN103821558 B CN 103821558B CN 201410051780 A CN201410051780 A CN 201410051780A CN 103821558 B CN103821558 B CN 103821558B
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Abstract
A kind of filling process being applicable to coal mining, this technique is, stope filling material fragmentation and agitator chamber arrangement mountain top portion in orbit, stowboard is arranged in the certain distance of coal-face overlying rock, to fan drilling to goaf under being constructed by the stowboard of above goaf, filling pipeline is laid in stowboard, coal-face and goaf separate by the shielding plate between coal-face and goaf on rear side of close measure hydraulic support, gob side entry retaining and bashing are separated by gob side entry retaining filling process hydraulic prop and steel form.By filling pipeline, filler is transported to goaf; After filler solidifies and has certain intensity, coal-face is pushed ahead, and goes round and begins again and carries out exploiting and filling.Beneficial effect of the present invention is: effectively control stope ground pressure, reduces subsidence; Avoid gangue to take good farmland, eliminate hillock and cause environment pollution, the lasting exploit in colliery can be realized.
Description
Technical field
The present invention relates to one and be applicable to coal mining filling, particularly relate in the gentle dip being subject to mining influence violent and inclined seam exploitation field.
Background technology
Coal is the disposable energy, in the energy resource structure of China, account for the principal status of public economy.Along with the fast development of China's economy, along with the increase of the demand to the energy, the yield of coal also rolls up, and has exceeded 4,000,000,000 tons at the coal production of China in 2013.Simultaneously the environmental problem brought of coal mining is more and more serious, as coal mining causes strata movement and destruction, is formed in overlying rock " three bands ", causes the flowing of water and gas in rock stratum, cause coal mine gas explosion and down-hole water inrush accident; Subsidence is caused to ground, the damage of building facilities; Bulk deposition, at the spoil on ground, both took good farmland, caused environment pollution again; Along with the continuous increase of China's pit mining degree of depth, the frequency that the dynamic disaster such as strata behaviors and bump occurs increases, and intensity increases, and jeopardizes the safety in production of mine.Application number be 201110388670.1 Chinese patent disclose in the strip-type fluid expansion filling mining method in thick following coal seam, adopt strip-type exploitation, limit by seam inclination simultaneously; Application number be 201110070870.2 Chinese patent disclose in the laneway type filling mining method in thick and above coal seam, pick anchor all-in-one or continuous miner is adopted to adopt laneway type exploitation and filling, production efficiency is low, and the method is only suitable for small mine or local " three times " exploitation; Application number be 201110028042.2 Chinese patent disclose a kind of coal mine filling exploitation face timbering system; Application number is that the Chinese patent of 2011100396497.X discloses Moveable type mechanical seal filling exploitation bracket.Application number be 201310184020.4 Chinese patent disclose the method for arranging of drilling chamber in a kind of filling mining, the method is applicable to metal mine, is arranged in obturation by drilling chamber.
The present invention is a kind of method belonging to Coal Green exploitation, by eliminating seam mining to the destruction of environment to the filling in goaf, reducing mine disaster simultaneously and occurring.
Summary of the invention
According to the restriction of above deficiency of the prior art or applicable elements, the technical problem to be solved in the present invention is: under the condition that can meet now widely used longwall actual mining work plane normal productive capacity, realizes lasting exploit to by the violent gentle dip of mining influence and inclined seam exploitation.
For achieving the above object, technical scheme of the present invention is as follows:
Extensively adopting Mined-out Area control in progress of coal mining is at present comprehensive caving method, detailed process: when coal-face is after open-off cut advances certain distance, immediate roof exposes and reaches certain area and be about to begin to collapse and fall behind in mixed and disorderly accumulation in the goaf in, hard old top due to its fracture step larger, above goaf is exposed to so that platy structure is outstanding, when main roof strata reaches its strength limit, form fracture by the edge of old top platy structure and middle part, namely coal-face is pressed.After immediate roof and main roof caving are ruptured, can there are three representative parts in the destruction of overlying strata and movement, be called from bottom to top: caving zone, fissure zone and warp damage, generally referred to as " three bands ".Final initiation subsidence and underground water and aquifer are destroyed, and cause surface buildings to damage; Simultaneously a large amount of spoil directly outer row store up, account for firming ground, contaminated environment.
Coal mine gob filling exploitation is propelling along with coal-face, by filling pipeline and filling borehole by filling waste rock, flyash, building waste and the special filler technology to goaf.
The advantage of coal mine gob filling mining: increase stope filling material fragmentation and agitator chamber, stowboard, filling borehole and filling pipeline on existing production technology basis, forms process for filling coal mine goaf.This filling process and existing coal mining technique and stope production technology separate.The overlying strata of coal mine filling exploitation are caving feature and surface movement mechanism is completely different is caving formula process comprehensively exploits in adopting goaf.Main manifestations is: by goaf filling, form obturation roof supporting, the exploitation of Overburden Rock Failure scope more comprehensive caving method is less, generally only causes cracking behavior destroy and destroy without inbreak; Mainly bend the boil down to master with obturation with rock stratum above production zone during filling mining, the exploitation of longwall whole caving method is then based on the flexural deformation of the inbreak of bottom rock, fracture and rock stratum, top, and both moving characteristics exist significant difference.Achieve and both ensure that coal mining intensity does not reduce, the destruction of coal mining to environment can be reduced again; Underground goaf water, methane accumulation space can be reduced, reduce the accident possibility occurrences such as goaf gushing water, gas explosion, pernicious gas are outstanding, spontaneous combustion of float, suppress the dynamic phenomenon of coal seam and roof and floor, improve mine safety degree of protection; Spoil can be digested in a large number, alleviate the impact of coal mining on earth's surface, reduce cultivated land occupancy and mining area village migration, protect and improve mining area ecological environment, promote development of resources and Coordination Development Between Eco-environment.
The mechanism of coal mine filling exploitation: obturation supports overlying rock effect.Along with work plane is from the propelling of open-off cut, every the cemented fill of a segment distance filling one fixed width, is supported by obturation and cover top board, improve characteristics of surrounding rock.When after stope excavation, due to stress redistribution, in the scope that overlying strata top layer is certain, create weakening region, in this district, rock mass is stressed has exceeded its peak strength.Being filled with of obturation, can make the excavation surface residual strength of this part rock mass be improved; The effect of obturation to country rock mainly supports, allow pressure and stop overburden deformation (or displacement), be then secondary to the improvement of overlying strata top layer residual strength.For large area obturation, it can also reach the effect controlling large-area pressure activity.The mechanism of obturation to overlying strata is one and supports and press through journey with allowing.
Coal mine gob filling mining technology comprises: stope filling material fragmentation and agitator chamber, and underground stowboard is arranged and filling pipeline, filling borehole, close measure between coal-face and goaf.
This system is carried out in the steps below: a construction stowboard in coal-face overlying rock, to fan drilling to goaf under constructing, lays filling pipeline in stowboard in stowboard; After the coal advance of the face one segment distance, with the shielding plate on rear side of hydraulic support, coal-face and goaf are separated; Filler enters goaf through filling pipeline and filling borehole, and after filler solidifies and has certain intensity, coal-face is pushed ahead; Filler is the barren rock on the spoil of down-hole or ground hillock, spoil on the hillock existed ground is transported to down-hole stope filling material fragmentation and agitator chamber after floor crushing, and the barren rock be excavated for stone head under mine directly transports to stope filling material fragmentation and agitator chamber.
Filler is barren rock, flyash, building waste and special filler on the spoil of down-hole or ground hillock, and cementitious materials adopts cement, flyash, blast-furnace cinder, adds accelerating admixture simultaneously.
The filling process of gob side entry retaining lane side: at lane side erection hydraulic prop as primary structure member, install steel form in hydraulic prop, and steel form is fixed on hydraulic prop; After goaf filling terminates, when filler has certain intensity, first remove a hydraulic prop and corresponding steel form from away from work plane position, then remove hydraulic prop and steel form successively in order.
Advantageous Effects of the present invention is: the filling realizing goaf when not changing existing coal-face equipment and arranging; Adopt the method for mining by the way of filling effectively can reduce the mine pressure of country rock around coal-face and stope drift active workings; Filler effectively can reduce ground settlement to the support of goaf top plate country rock, avoids the destruction of above ground structure; Barren rock on hillock, as filler, can be eliminated gangue and takies good farmland and cause environment pollution; At lane side erection suspension device, fully achieve gob side entry retaining and without coal pillar mining.
The present invention is applicable to the goaf of Types Below coal-face: level and flat seam, gently inclined seam and inclined seam; The coal-face that stope ground pressure is large; The coal-face that " three times " exploitation is suitable for.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of coal mine gob filling mining and gob side entry retaining filling process;
Fig. 2 is coal mine gob filling mining technology elevational schematic view;
Fig. 3 is coal mine gob filling mining and gob side entry retaining filling process generalized section;
Fig. 4 is gob side entry retaining device for filling and process schematic representation.
In figure: 1. stope filling material fragmentation and agitator chamber; 2. underground stowboard; 3. filling pipeline; 4. filling borehole; 5. gob side entry retaining device for filling; 6. filling area; 7. goaf; 8. coal-face; 9. treat coal mining body; 10. hydraulic prop; 11. steel forms; 12. back timbers.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Coal mine filling production practice carries out in the steps below: (1) is in the recovery process of coal-face 8, prepare filler simultaneously, spoil on the hillock existed ground is transported to down-hole stope filling material fragmentation and agitator chamber 1 after floor crushing, and the barren rock be excavated for stone head under mine directly transports to stope filling material fragmentation and agitator chamber 1; (2) in the process preparing coal-face correlation engineering, construction stope filling material fragmentation and agitator chamber 1, underground stowboard 2, wherein stowboard is positioned at the top of coal work face tilt; (3) started filling borehole 4 of constructing in stowboard push ahead the width of open-off cut at coal-face 8 after, filling borehole 4 adopts fan-shaped layout, installs monomer hydraulic supporting 10, back timber 12 and steel form 11 in the lane of gob side entry retaining side.Along with coal-face 8 continues to push ahead, the lane side of gob side entry retaining is corresponding installs monomer hydraulic supporting 10, back timber 12 and steel form 11.When coal-face 8 pushes ahead about 10m, stop the recovery activity of coal-face 8.With the shielding plate on rear side of hydraulic support, coal-face 8 and goaf 7 are separated; The filler of stope filling material fragmentation and agitator chamber 1 enters goaf 7 through filling pipeline 3 and filling borehole 4, and after filler solidifies and has certain intensity, coal-face 8 is pushed ahead.
The filling process of gob side entry retaining lane side: at lane side erection hydraulic prop 10 as primary structure member, install steel form 11 in hydraulic prop 10, and steel form 11 is fixed on hydraulic prop 10; After goaf 8 sand off and filler have certain intensity, first remove hydraulic prop 10 and steel form 11 successively in order from away from work plane position.
The above; be only the specific embodiment of the present invention; but the protection domain of invention is not limited thereto; any engineers and technicians being familiar with the art are in technical scope of the present invention; some conversion can be done; as the quantity of the position of stowboard, filling borehole, the filling lane side quarantine measures etc. of gob side entry retaining, all should as infringement protection scope of the present invention.Therefore protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (1)
1. coal mine gob filling mining and gob side entry retaining filling process, by stope filling material fragmentation and agitator chamber, stowboard, filling pipeline, filling borehole, between coal-face and goaf, plugging device forms, and it is characterized in that:
(1) filler fragmentation and agitator chamber are set at the track mountain upper top in exploiting field;
(2) a construction stowboard in coal-face overlying rock;
(3) in stowboard, filling pipeline is laid;
(4) to fan drilling to goaf under constructing in stowboard, set up hydraulic prop as primary structure member in lane side simultaneously, in hydraulic prop, steel form is installed, and steel form is fixed on hydraulic prop;
(5) after coal-face advances a segment distance, with the shielding plate on rear side of filling hydraulic support, coal-face and goaf are separated;
(6) filler of stope filling material fragmentation and agitator chamber enters goaf through filling pipeline and filling borehole, and after filler solidifies and has certain intensity, coal-face is pushed ahead;
(7) filler is that barren rock on the spoil of down-hole or ground hillock enters agitator after fragmentation, and cementitious materials adopts cement, flyash, blast-furnace cinder, adds accelerating admixture simultaneously;
(8) bashing has certain intensity when filler after terminating, and removes hydraulic prop and steel form successively in order from away from coal-face position.
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| CN201410051780.2A CN103821558B (en) | 2014-02-14 | 2014-02-14 | Coal mine gob filling mining and gob side entry retaining filling process |
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| CN201410051780.2A CN103821558B (en) | 2014-02-14 | 2014-02-14 | Coal mine gob filling mining and gob side entry retaining filling process |
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| CN103821558A CN103821558A (en) | 2014-05-28 |
| CN103821558B true CN103821558B (en) | 2016-02-24 |
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| CN104948191A (en) * | 2015-07-15 | 2015-09-30 | 辽宁工程技术大学 | Method for preventing and treating rock burst by using filling mode |
| CN106522980A (en) * | 2015-09-15 | 2017-03-22 | 四川达竹煤电(集团)有限责任公司金刚煤矿 | Gob-side roadway protection support for inclined middle-thickness coal bed layered roof and construction method for gob-side roadway protection support |
| CN105604552B (en) * | 2015-12-21 | 2017-10-10 | 冀中能源集团有限责任公司 | A kind of solid material filling coal mining gob-side entry retaining method |
| CN106321103B (en) * | 2016-09-08 | 2018-04-13 | 中国矿业大学 | A kind of solid filling collaboration artificial ore pillar recycling room formula coal column method |
| CN106968708A (en) * | 2016-11-17 | 2017-07-21 | 湖南科技大学 | A kind of half-edge coal seam moves towards fully mechanized mining without coal column sublevel fill stoping coal-mining method |
| CN107524469B (en) * | 2017-07-25 | 2019-05-28 | 中南大学 | A kind of gently inclined orebody paneling barren rock and the cementing combination filling method of tailings |
| CN108222938B (en) * | 2018-02-07 | 2020-01-03 | 西安科技大学 | Combined grouting filling mining method for large-inclination-angle coal seam goaf |
| CN108468564B (en) * | 2018-03-12 | 2020-07-17 | 中国矿业大学 | Near-horizontal coal seam roadway type cemented filling method |
| CN108625862A (en) * | 2018-04-11 | 2018-10-09 | 贵州开磷建设集团有限公司 | A kind of sinking and drifting method on loose crushing rock mass |
| CN110043311A (en) * | 2019-03-29 | 2019-07-23 | 新汶矿业集团有限责任公司 | A kind of goaf grouting filling process for being suitble to stay lane |
| CN109973144B (en) * | 2019-04-04 | 2022-04-12 | 中国矿业大学(北京) | Two-wing mining method for filling and rotating alternative cooperative operation |
| CN109944634B (en) * | 2019-04-19 | 2020-07-31 | 中国矿业大学(北京) | Coal seam top and bottom plate filling type goaf filling structure and filling method thereof |
| CN112943243B (en) * | 2021-02-08 | 2023-03-24 | 中国矿业大学 | Method for old hole cutting of oversize section of fully mechanized caving face of shallow-buried extra-thick coal seam |
| CN113404531B (en) * | 2021-06-18 | 2022-05-13 | 中国矿业大学 | Goaf filling method for reconstructing broken roof structure in coal pillar-free mining |
| CN113586053B (en) * | 2021-08-27 | 2022-04-12 | 东莞理工学院 | Trinity gob-side entry retaining gangue filling mining method |
| CN113622993B (en) * | 2021-09-06 | 2022-05-17 | 中国矿业大学 | Mineralization ecological protective coal mining method utilizing CO2 waste gas |
| CN114673550A (en) * | 2022-03-31 | 2022-06-28 | 中国矿业大学(北京) | Waste rock treatment method for continuous filling mining |
| CN115263412A (en) * | 2022-07-22 | 2022-11-01 | 中国矿业大学 | Method for filling caving coal goaf |
| CN117266922B (en) * | 2023-10-17 | 2024-03-19 | 济宁矿业集团矿产资源勘查开发有限公司 | Postmining filling water-reducing process and postmining filling water-reducing equipment for goaf of shallow-buried thin coal seam coal mine |
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Effective date of registration: 20190812 Address after: 016200 Manhatu Town, Shanghai Miao Town, Etok Qianqi, Ordos City, Inner Mongolia Autonomous Region Patentee after: Otog Front Banner Changcheng Mine Co.,Ltd. Address before: 232001 Anhui Province, Huainan city Shungeng Road No. 168 Patentee before: Anhui University Of Science And Technology |