CN102491690B - Filling material for high caving area of coal roadway - Google Patents
Filling material for high caving area of coal roadway Download PDFInfo
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- CN102491690B CN102491690B CN 201110405857 CN201110405857A CN102491690B CN 102491690 B CN102491690 B CN 102491690B CN 201110405857 CN201110405857 CN 201110405857 CN 201110405857 A CN201110405857 A CN 201110405857A CN 102491690 B CN102491690 B CN 102491690B
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Abstract
The invention belongs to the technical field of the filling of high caving areas of coal roadways, and particularly relates to a filling material for a high caving area of a coal roadway. The filling material consists of the following raw materials in part by mass: 25 to 30 parts of expanded perlite, 30 to 40 parts of cement, 8 to 15 parts of ceramsite, 35 to 45 parts of water, 0.2 to 8 parts of water reducing agent, 1.5 to 3.5 parts of expanding agent, 1.5 to 3.5 parts of accelerating agent and 0.2 to 0.9 part of redispersible latex powder. The invention has the advantages that the filling material does not generate heat, is not combusted when filled, has the characteristic of high-temperature resistance and a good closed effect, so that the phenomenon of filler combustion due to the spontaneous combustion of coal seams of the high caving areas in thick coal seams; and the filling material is light, so the weight of the filler after the filling material is filled can be reduced, and the filler is difficult to drop and high in compression strength.
Description
Technical field
The invention belongs to the coal mine roadway height and emit packing technique field, district, be specifically related to a kind of filling material for high caving area of coal roadway.
Background technology
In process of coal mining, at the thick seam coal road or be subjected to structure influence zone, the back poor stability, the easy inbreak of top board forms tunnel Gao Maoqu, and the long-term existence of Gao Maoqu can be produced to the colliery bring potential safety hazard.
There is the following aspect of main manifestations, unfavorable aspect in tunnel Gao Maoqu: first Gao Maoqu occurs in the coal seam of easy spontaneous combustion, and height emits coal seam, top, district to be in the easy oxidation of zone of silence, causes spontaneous combustion; It two is that the top of Gao Maoqu easily causes methane accumulation, the gas exceeding limit phenomenon occurs; Three to be that the stability of Gao Maoqu exists uncertain for it, also the roof fall phenomenon can occur.
For a long time, coal mining enterprise pays close attention to always and processes timely Gao Maoqu, and the method for processing Gao Maoqu mainly is divided into two kinds: the one, and artificial grillage filling, and use flyash, loess or other materials filling, this placement method efficient is low, stowing operation is dangerous large, and backfilled enclosed effect is bad; The 2nd, the injection organic materials, stop material and auspicious rice material etc. such as beautiful loose, the FCC chemical material of foamex, horse, Bo Leiyin material, Roc, although the organic materials placement efficiency is high, but filling cost is higher, and especially chemical reaction occurs in stowing operation compaction material, emits amount of heat, easily cause the burning in coal seam, the high case of emitting district's filling organic materials freely burning fire once occuring, caused greater loss to mine, also stayed hidden danger for following safety in production.Therefore, seek new not fire, lightweight, inorganic materials be that the roof fall district carries out filling, will be of great significance the Safety of Coal Mine Production tool.
Summary of the invention
The purpose of this invention is to provide a kind ofly do not fire, the filling material for high caving area of coal roadway of lightweight, be used for the tunnel height that colliery thick seam tunnelling process occurs and emit district's filling.
The present invention is by the following technical solutions:
A kind of filling material for high caving area of coal roadway is comprised of the raw material of following mass fraction: pearlstone 25-30 part, cement 30-40 part, haydite 8-15 part, water 35-45 part, water reducer 0.2-8 part, swelling agent 1.5-3.5 part, accelerating chemicals 1.5-3.5 part and redispersible latex powder 0.2-0.9 part.
Further preferred, the mass fraction of each raw material is: 0.66 part of 26 parts of pearlstones, 33 parts of cement, 11 parts of haydites, 40 parts in water, 0.6 part of water reducer, 2.64 parts of swelling agents, 2.64 parts of accelerating chemicalss and redispersible latex powder.
The particle diameter of described pearlstone is 1-3mm, and tap density is 90-130kg/m
3The particle diameter of haydite is 6-12 mm.
Described water reducer is FDN-8000, FDN-03, FDN-C or KS-20 high efficiency water reducing agent; Swelling agent is aluminate class swelling agent or sulplo-aluminate class swelling agent; Accelerating chemicals J85 or 8880 type accelerating chemicalss.
Get in proportion each raw material during preparation, mixing gets final product.
Filling material for high caving area of coal roadway of the present invention emits district's filling for the tunnel height that colliery thick seam tunnelling process occurs, can adopt the pneumatic injection pump to carry out filling during filling, has good deformation performance after solidifying, hysteresis quality with expansion, the real tunnel Gao Maoqu of the preferably filling of obturator that forms realizes connecing preferably the top effect; This compaction material the material that is also advantageous in that do not produce heat, filling is not burnt, and has resistant to elevated temperatures characteristic, has better obturation effect, thereby has avoided the thick seam height to emit district's obturator combustion phenomena of bringing of spontaneous combustion of coal seam; Compaction material self is lighter, can reduce the weight of obturator after the filling, the obturator difficult drop-off, and ultimate compression strength is good.
Embodiment
Embodiment 1
Filling material for high caving area of coal roadway is comprised of the raw material of following mass fraction: 0.2 part of 25 parts of pearlstones, 30 parts of cement, 8 parts of haydites, 35 parts in water, 0.2 part of FDN-8000 high efficiency water reducing agent, 1.5 parts of bulking agent of calcium aluminate, 1.5 parts of 8880 type accelerating chemicalss and redispersible latex powder.
After the compaction material of employing embodiment 1 emitted district's filling to the coal road height, the performance data that detects obturator is: density was 620 Kg/m
3, degree of mobilization is 120mm, be initial set≤5min time of coagulation, and final set 〉=10min, 3d ultimate compression strength 1.4MPa, compression deformation rate is 2%, and is functional.
Embodiment 2
Filling material for high caving area of coal roadway is comprised of the raw material of following mass fraction: 0.66 part of 26 parts of pearlstones, 33 parts of cement, 11 parts of haydites, 40 parts in water, 0.6 part of FDN-C high efficiency water reducing agent, 2.64 parts of sulphoaluminate expanders, 2.64 parts of J85 type accelerating chemicalss and redispersible latex powder.
After the compaction material of employing embodiment 2 emitted district's filling to the coal road height, the performance data that detects obturator is: density was 640 Kg/m
3, degree of mobilization is 130mm, be initial set≤5min time of coagulation, and final set 〉=10min, 3d ultimate compression strength 1.6MPa, compression deformation rate is 2%, and is functional.
Embodiment 3
Filling material for high caving area of coal roadway is comprised of the raw material of following mass fraction: 0.9 part of 30 parts of pearlstones, 40 parts of cement, 15 parts of haydites, 45 parts in water, 8 parts of KS-20 high efficiency water reducing agents, 3.5 parts of bulking agent of calcium aluminate, 3.5 parts of J85 type accelerating chemicalss and redispersible latex powder.
After the compaction material of employing embodiment 3 emitted district's filling to the coal road height, the performance data that detects obturator is: density was 650 Kg/m
3, degree of mobilization is 140mm, be initial set≤4min time of coagulation, and final set 〉=8min, 3d ultimate compression strength 1.7MPa, compression deformation rate is 1.5%, and is functional.
Embodiment 4
Filling material for high caving area of coal roadway is comprised of the raw material of following mass fraction: 0.9 part of 25 parts of pearlstones, 40 parts of cement, 8 parts of haydites, 45 parts in water, 0.2 part of FDN-8000 high efficiency water reducing agent, 3.5 parts of sulphoaluminate expanders, 1.5 parts of 8880 type accelerating chemicalss and redispersible latex powder.
After the compaction material of employing embodiment 4 emitted district's filling to the coal road height, the performance data that detects obturator is: density was 6450 Kg/m
3, degree of mobilization is 155mm, be initial set≤4min time of coagulation, and final set 〉=8min, 3d ultimate compression strength 1.8MPa, compression deformation rate is 1.0%, and is functional.
Embodiment 5
Filling material for high caving area of coal roadway is comprised of the raw material of following mass fraction: 0.2 part of 30 parts of pearlstones, 30 parts of cement, 15 parts of haydites, 35 parts in water, 8 parts of FDN-8000 high efficiency water reducing agents, 1.5 parts of sulphoaluminate expanders, 3.5 parts of J85 type accelerating chemicalss and redispersible latex powder.
After the compaction material of employing embodiment 5 emitted district's filling to the coal road height, the performance data that detects obturator is: density was 635 Kg/m
3, degree of mobilization is 125mm, be initial set≤5min time of coagulation, and final set 〉=10min, 3d ultimate compression strength 1.5MPa, compression deformation rate is 2%, and is functional.
The particle diameter of pearlstone is 1-3mm among the embodiment 1-5, and tap density is 90-130kg/m
3, the particle diameter of haydite is 6-12 mm, and the umber among the embodiment 1-5 is mass fraction, gets in proportion each raw material during preparation, and mixing gets final product.
Claims (4)
1. filling material for high caving area of coal roadway, it is characterized in that: the raw material by following mass fraction forms: pearlstone 25-30 part, cement 30-40 part, haydite 8-15 part, water 35-45 part, water reducer 0.2-8 part, swelling agent 1.5-3.5 part, accelerating chemicals 1.5-3.5 part and redispersible latex powder 0.2-0.9 part.
2. filling material for high caving area of coal roadway as claimed in claim 1, it is characterized in that: the mass fraction of each raw material is: 0.66 part of 26 parts of pearlstones, 33 parts of cement, 11 parts of haydites, 40 parts in water, 0.6 part of water reducer, 2.64 parts of swelling agents, 2.64 parts of accelerating chemicalss and redispersible latex powder.
3. filling material for high caving area of coal roadway as claimed in claim 1 or 2, it is characterized in that: the particle diameter of described pearlstone is 1-3mm, tap density is 90-130kg/m
3The particle diameter of haydite is 6-12 mm.
4. filling material for high caving area of coal roadway as claimed in claim 1 or 2, it is characterized in that: described water reducer is FDN-8000, FDN-03, FDN-C or KS-20 high efficiency water reducing agent; Swelling agent is aluminate class swelling agent or sulplo-aluminate class swelling agent; Accelerating chemicals is J85 or 8880 type accelerating chemicalss.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110405857 CN102491690B (en) | 2011-12-08 | 2011-12-08 | Filling material for high caving area of coal roadway |
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| CN 201110405857 CN102491690B (en) | 2011-12-08 | 2011-12-08 | Filling material for high caving area of coal roadway |
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| CN102491690B true CN102491690B (en) | 2013-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104251139B (en) * | 2013-06-26 | 2016-04-06 | 河南理工大学 | Coal-face Collapsed zone filling mining method |
| CN105481314B (en) * | 2015-12-01 | 2017-09-12 | 安徽理工大学 | Utilize the colliery Paste-like body filler and its preparation and fill method of building waste |
| CN106747636B (en) * | 2016-12-12 | 2020-01-10 | 安徽佳泰矿业科技有限公司 | Mineral inorganic superfine foaming filling material and preparation method and use method thereof |
| CN110218065A (en) * | 2019-05-30 | 2019-09-10 | 昌鑫生态科技(陕西)有限公司 | The technology of Industrial Solid Waste preparation pit packing material |
| CN110332008A (en) * | 2019-07-31 | 2019-10-15 | 邢萌 | Based on graphite-filled underground caving place structure and its fill method |
| CN112194416A (en) * | 2020-09-25 | 2021-01-08 | 辽宁工程技术大学 | Novel roadway sprayed concrete heat insulation layer and application method thereof |
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| CN101538136A (en) * | 2009-04-29 | 2009-09-23 | 华南理工大学 | Premixing mortar with high moisture retention and production method thereof |
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Inventor after: Wang Wen Inventor after: Li Dongyin Inventor after: Li Huamin Inventor after: Xiong Zuqiang Inventor after: Yuan Ruifu Inventor after: Zhang Yaohui Inventor before: Li Huamin Inventor before: Wang Wen Inventor before: Li Dongyin Inventor before: Xiong Zuqiang Inventor before: Yuan Ruifu Inventor before: Zhang Yaohui |
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Free format text: CORRECT: INVENTOR; FROM: LI HUAMIN WANG WEN LI DONGYIN XIONG ZUQIANG YUAN RUIFU ZHANG YAOHUI TO: WANG WEN LI DONGYIN LI HUAMIN XIONG ZUQIANG YUAN RUIFU ZHANG YAOHUI |
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