CN105317459A - Subarea filling method used for controlling large-area falling disaster of hard roof - Google Patents
Subarea filling method used for controlling large-area falling disaster of hard roof Download PDFInfo
- Publication number
- CN105317459A CN105317459A CN201510802272.8A CN201510802272A CN105317459A CN 105317459 A CN105317459 A CN 105317459A CN 201510802272 A CN201510802272 A CN 201510802272A CN 105317459 A CN105317459 A CN 105317459A
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- Prior art keywords
- filling
- roof
- area
- goaf
- grouting
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000032798 delamination Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 7
- 238000005553 drilling Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005065 mining Methods 0.000 claims description 5
- 210000003127 knee Anatomy 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 8
- 239000000945 filler Substances 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 4
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/08—Filling-up hydraulically or pneumatically
-
- 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/02—Supporting means, e.g. shuttering, for filling-up materials
- E21F15/04—Stowing mats; Goaf wire netting; Partition walls
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Revetment (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a subarea filling method used for controlling a large-area falling disaster of a hard roof. According to the subarea filling method used for controlling the large-area falling disaster of the hard roof, a gob is divided into main supporting filling zones, an auxiliary filling area and a roof separation filling area; each main supporting filling zone is mainly composed of discarded gangue, concrete, short anchor cables and supporting components so as to have strong supporting and closing ability; the auxiliary filling area is mainly arranged in a closed space between the two main supporting filling zones and filled with highly-hydraulic materials or other materials; in the sinking process of the roof, the main supporting filling zones and coal walls on the two sides have a restraining effect on a filler, so the filler in the auxiliary filling area has high supporting ability; in the roof separation filling area, high-pressure grouting filling is conducted in the area where the roof is subjected to separation within the range of the auxiliary filling area so as to prevent separation of rock strata at upper levels, and then subsidence can be effectively controlled.
Description
Technical field
The present invention relates to a kind of coal mine gob processing method, be applicable to the subregion placement method controlling tight roof large area caving disaster
Background technology
Coal mine gob tight roof process problem is the important problem of the safe and efficient production of puzzlement mine working face.When working seam top board is complete hard rock stratum, along with work plane is pushed ahead, above goaf tight roof large area is unsettled and do not occur to be caving accordingly, thus cause work plane rear above goaf top board outstanding showing up long-pendingly to increase gradually, now tight roof has gathered great number of elastic energy, be caving once occurrence of large-area, will strong bump be produced.In addition, in goaf, large quantity of air is compressed suddenly, in tunnel, produce hurricane, impacts all mining equipment of damage and operating personnel, even has influence on other regions of full mine and mine main fan.
At present, the method for generally taked controlroof, be mainly that artificial overhead caving, Roof injection are softening, hydrofracturing, depth hole inclination explosion etc.These methods achieve certain effect in applying at the scene, but all there is the problem such as tight roof drilling construction difficulty, serious restriction drawing speed, and fail fundamentally to solve a tight roof control difficult problem.The present invention has changed existing river harnessing ideas, the impact disaster adopting placement method to solve tight roof large area caving to bring, and propose that new subregion placement method realizes that full mine gives up that cash utilizes, back production and filling work in coordination with and carry out and effective control of subsidence.
Summary of the invention
Object of the present invention is exactly the problem in order to solve existing for above-mentioned current tight roof control technology, and maturation is simple technically, control top cost is low, the method that the effectiveness of roof control is good to provide one.The method effectively can solve the problem existing for the technology of above-mentioned current control top, as higher in there is control top cost, and complicated construction technique, tight roof is difficult to fundamentally obtain a series of outstanding problems such as corresponding effectively control.
For realizing above-mentioned purpose of the present invention, the invention provides a kind of method being applicable to control goaf tight roof and sinking to being caving suddenly.After work plane pushes ahead certain distance from open-off cut, in support afterbody goaf, lay corresponding grouting pipe.Meanwhile make a call to 1 ~ 3 deep drill to goaf top plate uniformly at whole work plane rear.Drilling depth gets to top board main key stratum lower roof plate generation absciss layer place, meanwhile corresponding and lay the grouting pipeline of an atresia, wherein Grouting Pipe with import drill hole annular rubber ring and seal.Grouting pipeline adopts flexible pipe, and is equipped with corresponding steel bar framework operator guards at pipeline, avoids goaf spoil inbreak to smash corresponding grouting pipeline.When after the corresponding propelling certain distance of work plane, after force piece, use discarded spoil to build having one fixed width with height cross section is trapezoidal support fire dam, wherein trapezoidal top width is 5 ~ 10m, be highly corresponding mining height, its concrete large I is discarded spoil amount according to mine and is adjusted accordingly; Lay wire lath on support fire dam surface, utilize concrete grouting pipeline to carry out corresponding grouting and reinforcing to it; Before concrete slurry does not also solidify, interval is evenly loaded onto by reinforcement rigging from top to bottom to support fire dam, meanwhile applies corresponding prestressing force, increase with this bulk strength supporting fire dam, make it become main support packwall, goaf.When complete and after reaching its corresponding some strength to support packwall slip casting, high-water material is adopted to assist the grouting pipe of filling area centre to assist filling area to carry out lag grouting to the goaf behind main support packwall by being laid on goaf; Along with pushing ahead of work plane, meanwhile continue to assist in filling area main support packwall and goaf to carry out corresponding grouting and reinforcing, when continuing to push ahead along with work plane, corresponding absciss layer will be there is in its work plane rear goaf top plate, now adopt high-water material to carry out corresponding grouting and reinforcing by the grouting pipe be laid in goaf top plate to roof delamination district, reduce the surface subsidence phenomenon caused by the exploitation of underground coal with this.
Beneficial effect
Present invention achieves down-hole bastard coal be directly separated and transport, the spoil fragmentation of being separated down-hole is directly transported to goaf afterwards and carries out filling, decreases surface subsidence, alleviates the pressure that transport promotes.Decrease floor space and the environment pollution of hillock simultaneously, surface subsidence can be controlled well, be applicable to the place higher to surface subsidence control requirement; In addition the filler selected by it is simple and easy to obtain, and filler cost is low, the problem such as efficiently solve filling operation area water and mud is too much.Filling velocity is fast, and placement method is simple, achieves working face extraction and bashing carries out simultaneously, and reliability is strong, and small investment, cost are low, in tight roof control technology field, have practicality widely.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention solves the filling control method of tight roof large area caving disaster.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is B-sectional view in Fig. 1.
Fig. 4 is C-C line sectional view in Fig. 1.
Fig. 5 is the partial enlarged drawing in Fig. 1, Fig. 2 and Fig. 3.
Description of reference numerals: main support packwall, 1-goaf; 2-concrete filling pipeline; High-water material slip casting district in 3-goaf; Grouting pipe in 4-goaf; 4a-steel bar framework; 4b-injected hole; 5-roof delamination district; 6-roof delamination district grouting pipe; 6a-ring-shaped rubber sealing-plug; 7-entity coal; 8-work plane; 9-filling pumping plant; 10a-steel strand; 10b-pallet; 10c-reinforcing bar ladder beam; 11-wire lath.
Detailed description of the invention
A kind of subregion placement method for controlling tight roof large area caving disaster as shown in Figure 1, comprising: main support packwall 1, goaf; Concrete grouting pipeline 2; High-water material slip casting district 3 in goaf; Grouting pipe 4 in goaf; Steel bar framework 4a; Injected hole 4b; Roof delamination district 5; Roof delamination district grouting pipe 6; Ring-shaped rubber sealing-plug 6a; Entity coal 7; Work plane 8; Filling pumping plant 9; Strengthen rigging; Steel strand 10a; Pallet 10b; Reinforcing bar ladder beam 10c; Wire lath 11.
A kind of subregion placement method for controlling tight roof large area caving disaster of the application, its supporting method is: after work plane 8 pushes ahead certain distance from open-off cut, corresponding grouting pipe 4 is laid in support afterbody goaf, meanwhile evenly make a call to 1 ~ 3 deep drill to top board at whole work plane rear, drilling depth gets to the main key stratum place of top board generation absciss layer, and lay the grouting pipe 6 of an atresia, grouting pipe 6 is installed at the bottom of drilling hole; To crush effect to reach best grout injection control; In addition boring will adopt ring-shaped rubber sealing-plug 6a to seal with the aperture place of injected hole, an auxiliary filling area length is pushed ahead when work plane is corresponding, after force piece with gangue built have one fixed width and height and its cross section is trapezoidal main support packwall 1, goaf, wherein trapezoidal top width is 5 ~ 10m, be highly corresponding mining height, its concrete large I is discarded spoil amount according to mine and is adjusted accordingly; Lay wire lath 11 on surface, main support packwall 1, utilize concrete grouting pipeline 2 to carry out corresponding grouting and reinforcing to it; Before concrete slurry does not also solidify, interval is evenly loaded onto by reinforcement rigging from top to bottom to main support packwall 1, by lockset, steel strand 10a, pallet 10b and reinforcing bar ladder beam 10c are closely linked as an entirety, meanwhile apply corresponding prestressing force, increase the bulk strength of main support packwall 1 with this.Its pipeline laid all adopts steel bar framework 4a to protect accordingly grouting pipeline, by pipeline protection wherein in case do not affect again its corresponding slip casting effect while that Grouting Pipe being damaged by pressure by goaf spoil; When complete to main support filling 1 slip casting, and after reaching corresponding some strength, high-water material is adopted to carry out lag grouting by the grouting pipe 4 being laid on work plane rear-center place to the goaf behind main support packwall 1; After complete to rear, main support packwall 1 goaf grouting, along with work plane 8 continue push ahead, will absciss layer be there is in the top board in its goaf, work plane 8 rear, now adopt high-water material to carry out corresponding grouting and reinforcing by the grouting pipe 6 pairs of roof delamination districts 5 be laid in roof delamination district 5, reduce the surface subsidence phenomenon caused by the exploitation of underground coal with this.Described auxiliary filling area length depends primarily on roof periodic water component L, support width of wall body d, body of wall from construction to the time t and the face propulsion speed v that play supporting role, its length should be less than L-vt-d, ensure in main knee wall body construction process, work plane can normally be exploited, and top board can not occur disrumpent feelings; When the advance of the face is to disrumpent feelings position, main support packwall can form effective support, avoids occurrence of large-area to be caving disaster.
Claims (5)
1. one kind for controlling the subregion placement method of tight roof large area caving disaster, it is characterized in that: the described subregion placement method for controlling tight roof large area caving disaster, the working space under tight roof is utilized to carry out a point region class filling and support, can while back production, carry out filling and support operation, described method comprises: when after the advance of the face to auxiliary filling area length, a trapezoidal support body of wall is built into the discarded Gangue that full mine is transported to this place immediately after force piece, pre-buried steel twisted wire in the process of piling up, and concrete grouting is carried out to discarded spoil support body of wall, waste metal net is laid afterwards on support body of wall inclined-plane, and by the steel supporting plate of pre-buried steel strand recovery, reinforcing bar ladder beam carries out prestress application to the pack wall after concrete grouting, its entirety is made to have advantages of higher compressive strength, become main support packwall, goaf, in the work progress of main support packwall, built-in slip casting pipe road, and adopt corresponding steel bar framework structure to protect, in case grouting pipeline is damaged when main support belt plays a role, after a main support packwall completes and can reach some strength, namely in the auxiliary filling area that it is closed, the operation of high-water material grouting filling is carried out, form the filling in whole goaf, avoid along with passage of time, there is unstability and to collapse side and then generation goaf top plate large area caving in main support packwall, when goaf is assisted filling area slip casting complete after, along with work plane continue push ahead, will absciss layer be there is in its face roof, high-water material is now adopted to carry out corresponding grouting and reinforcing by the grouting pipe be laid in top board to roof delamination district, weaken absciss layer district upwards to expand, strengthen the control to subsidence.
2. a kind of subregion placement method for controlling tight roof large area caving disaster according to claim 1, it is characterized in that: after work plane pushes ahead certain distance from open-off cut, can to top board construction 1 ~ 3 boring in goaf, drilling depth gets to the main key stratum place of top board generation absciss layer, before main support packwall is formed, the grouting pipeline completing roof delamination district lays work, and this grouting pipeline lays along goaf top plate.
3. a kind of subregion placement method for controlling tight roof large area caving disaster according to claim 1, it is characterized in that: described auxiliary filling area length depends primarily on roof periodic water component L, support width of wall body d, body of wall from construction to the time t and the face propulsion speed v that play supporting role, its length should be less than L-vt-d, ensure in main knee wall body construction process, work plane can normally be exploited, and top board can not occur disrumpent feelings; When the advance of the face is to disrumpent feelings position, main support packwall can form effective support, avoids occurrence of large-area to be caving disaster.
4. a kind of subregion placement method for controlling tight roof large area caving disaster according to claim 1, it is characterized in that: the discarded spoil adopted for piling up main support packwall, goaf produced in full mine normal production, by downhole gangue refuse reclamation, can alleviate the energy consumption that original materials transportation system burden avoids spoil to be promoted to ground simultaneously, and ground spoil is stacked and processes the production and environmental problem that bring.
5. a kind of subregion placement method for controlling tight roof large area caving disaster according to claim 1, it is characterized in that: main support packwall, goaf cross section is trapezoidal, trapezoidal top width is 5 ~ 10m, it is highly corresponding mining height, its concrete large I is discarded spoil amount according to mine and is adjusted accordingly, if when mine spoil output is larger, can directly unnecessary discarded spoil be laid in auxiliary filling area, avoid because supporting width of wall body excessive, thus cause construction volume and grouting amount sharply to increase, and affect working face mining fltting speed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802272.8A CN105317459B (en) | 2015-11-19 | 2015-11-19 | A kind of subregion placement method for being used to control tight roof large area caving disaster |
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| CN201510802272.8A CN105317459B (en) | 2015-11-19 | 2015-11-19 | A kind of subregion placement method for being used to control tight roof large area caving disaster |
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| CN105317459A true CN105317459A (en) | 2016-02-10 |
| CN105317459B CN105317459B (en) | 2017-07-28 |
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| CN201510802272.8A Expired - Fee Related CN105317459B (en) | 2015-11-19 | 2015-11-19 | A kind of subregion placement method for being used to control tight roof large area caving disaster |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894838A (en) * | 2017-02-21 | 2017-06-27 | 长沙矿山研究院有限责任公司 | Large area insertion dead zone bag type partition substep filling administering method |
| CN106958446A (en) * | 2017-06-01 | 2017-07-18 | 湖南科技大学 | A kind of strata movement of steeply-inclined seam mining and the control method of subsidence |
| CN107916933A (en) * | 2017-11-20 | 2018-04-17 | 河南理工大学 | Stay equipment, method in a kind of tight roof coal seam goaf space |
| CN108204244A (en) * | 2016-12-20 | 2018-06-26 | 中国矿业大学(北京) | The spoil interval method of collecting coal by the means of filling |
| CN108412542A (en) * | 2018-01-18 | 2018-08-17 | 山东科技大学 | A kind of wide lane digging gangue paste body filling of high seam is at lane method |
| CN108756944A (en) * | 2018-05-29 | 2018-11-06 | 中国煤炭地质总局勘查研究总院 | The method that surface subsidence is controlled during mining |
| CN108999634A (en) * | 2018-07-26 | 2018-12-14 | 中国矿业大学 | Surface drilling realizes that a hole of water damage prevention and treatment and surface settlement control is mostly used method |
| CN109098752A (en) * | 2018-10-15 | 2018-12-28 | 中国矿业大学 | A kind of trapezoidal ruggedized construction of filling mining roadside support body and method |
| CN109681206A (en) * | 2018-08-20 | 2019-04-26 | 华北科技学院 | A method of filling control ground settlement of mining |
| CN110145363A (en) * | 2019-04-30 | 2019-08-20 | 中国矿业大学(北京) | A kind of Roof Control method realized fully mechanized coal face and be caving filling mining transition |
| CN110593874A (en) * | 2019-10-09 | 2019-12-20 | 中国矿业大学 | Full-filling method for strong and weak full mining of coal mine |
| CN112096449A (en) * | 2020-10-26 | 2020-12-18 | 西安科技大学 | Coal mine goaf paste strip grouting combined filling mining method |
| CN112360550A (en) * | 2020-10-28 | 2021-02-12 | 安徽理工大学 | Method for injecting and filling coal-based solid waste paste in low-position roof separation zone in gob-side entry retaining |
| CN113550782A (en) * | 2021-08-20 | 2021-10-26 | 太原理工大学 | Gob-side entry retaining working face goaf gas and natural ignition composite disaster treatment method |
| CN113914931A (en) * | 2021-09-30 | 2022-01-11 | 山东科技大学 | Method for performing goaf sealing and combustion inhibition by utilizing gangue isolation belt in coal mining process |
| CN114542174A (en) * | 2022-02-25 | 2022-05-27 | 安徽理工大学 | Controllable grouting filling method in roadway |
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204244A (en) * | 2016-12-20 | 2018-06-26 | 中国矿业大学(北京) | The spoil interval method of collecting coal by the means of filling |
| CN106894838B (en) * | 2017-02-21 | 2019-10-18 | 长沙矿山研究院有限责任公司 | Large area penetrates through dead zone bag type partition substep filling administering method |
| CN106894838A (en) * | 2017-02-21 | 2017-06-27 | 长沙矿山研究院有限责任公司 | Large area insertion dead zone bag type partition substep filling administering method |
| CN106958446A (en) * | 2017-06-01 | 2017-07-18 | 湖南科技大学 | A kind of strata movement of steeply-inclined seam mining and the control method of subsidence |
| CN107916933A (en) * | 2017-11-20 | 2018-04-17 | 河南理工大学 | Stay equipment, method in a kind of tight roof coal seam goaf space |
| CN108412542B (en) * | 2018-01-18 | 2019-03-12 | 山东科技大学 | A kind of wide lane digging gangue paste body filling of high seam is at lane method |
| CN108412542A (en) * | 2018-01-18 | 2018-08-17 | 山东科技大学 | A kind of wide lane digging gangue paste body filling of high seam is at lane method |
| CN108756944A (en) * | 2018-05-29 | 2018-11-06 | 中国煤炭地质总局勘查研究总院 | The method that surface subsidence is controlled during mining |
| CN108999634B (en) * | 2018-07-26 | 2019-07-05 | 中国矿业大学 | Surface drilling realizes that a hole of water damage prevention and treatment and surface settlement control is mostly used method |
| CN108999634A (en) * | 2018-07-26 | 2018-12-14 | 中国矿业大学 | Surface drilling realizes that a hole of water damage prevention and treatment and surface settlement control is mostly used method |
| CN109681206A (en) * | 2018-08-20 | 2019-04-26 | 华北科技学院 | A method of filling control ground settlement of mining |
| CN109098752A (en) * | 2018-10-15 | 2018-12-28 | 中国矿业大学 | A kind of trapezoidal ruggedized construction of filling mining roadside support body and method |
| CN110145363B (en) * | 2019-04-30 | 2024-03-29 | 中国矿业大学(北京) | Roof control method for realizing transition from fully mechanized mining face caving to filling mining |
| CN110145363A (en) * | 2019-04-30 | 2019-08-20 | 中国矿业大学(北京) | A kind of Roof Control method realized fully mechanized coal face and be caving filling mining transition |
| CN110593874A (en) * | 2019-10-09 | 2019-12-20 | 中国矿业大学 | Full-filling method for strong and weak full mining of coal mine |
| WO2021068691A1 (en) * | 2019-10-09 | 2021-04-15 | 巨峰 | Strong-weak-strong clean mining and full filling method for coal mine |
| CN112096449A (en) * | 2020-10-26 | 2020-12-18 | 西安科技大学 | Coal mine goaf paste strip grouting combined filling mining method |
| CN112360550A (en) * | 2020-10-28 | 2021-02-12 | 安徽理工大学 | Method for injecting and filling coal-based solid waste paste in low-position roof separation zone in gob-side entry retaining |
| CN113550782A (en) * | 2021-08-20 | 2021-10-26 | 太原理工大学 | Gob-side entry retaining working face goaf gas and natural ignition composite disaster treatment method |
| CN113914931A (en) * | 2021-09-30 | 2022-01-11 | 山东科技大学 | Method for performing goaf sealing and combustion inhibition by utilizing gangue isolation belt in coal mining process |
| CN113914931B (en) * | 2021-09-30 | 2023-11-28 | 山东科技大学 | Method for goaf sealing and burning inhibition by gangue isolation belt in coal mining process |
| CN114542174A (en) * | 2022-02-25 | 2022-05-27 | 安徽理工大学 | Controllable grouting filling method in roadway |
| CN114542174B (en) * | 2022-02-25 | 2023-02-28 | 安徽理工大学 | Controllable grouting filling method in roadway |
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