CN102491690A - 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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- CN102491690A CN102491690A CN2011104058578A CN201110405857A CN102491690A CN 102491690 A CN102491690 A CN 102491690A CN 2011104058578 A CN2011104058578 A CN 2011104058578A CN 201110405857 A CN201110405857 A CN 201110405857A CN 102491690 A CN102491690 A CN 102491690A
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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 coal road height and emit district's compaction material.
Background technology
In process of coal mining, at the thick seam coal road or receive structure influence zone, the back poor stability, top board is prone to inbreak, forms tunnel Gao Maoqu, and the long-term existence of Gao Maoqu can be brought potential safety hazard to colliery production.
Tunnel Gao Maoqu exists unfavorable aspect mainly to show following aspect: first Gao Maoqu to occur in the coal seam that is prone to spontaneous combustion, and height emits coal seam, top, district to be in zone of silence to be prone to oxidation, to cause spontaneous combustion; It two is that the top of Gao Maoqu is prone to cause 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 handles timely Gao Maoqu, and the method for handling 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 big, and backfilled enclosed effect is bad; The 2nd, the injection organic materials, as foamex, horse beautifully loose, FCC chemical material, Bo Leiyin material, Roc stop material and auspicious rice material etc., though the organic materials placement efficiency is high; But filling cost is higher, and especially chemical reaction takes place in stowing operation compaction material, emits a large amount of heats; Be prone to cause the burning in coal seam; The high case of emitting district's filling organic materials freely burning fire once taking place, caused greater loss to mine, also stayed hidden danger for following safety in production.Therefore, seek new not fire, lightweight, inorganic materials carry out filling for the roof fall district, will have crucial meaning to Safety of Coal Mine Production.
Summary of the invention
The purpose of this invention is to provide a kind ofly do not fire, light-weight coal road height emits district's compaction material, be used for the tunnel height that colliery thick seam tunnelling process occurs and emit district's filling.
The present invention adopts following technical scheme:
A kind of coal road height emits district's compaction material, is made up 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 said pearlstone is 1-3mm, and tap density is 90-130kg/m
3The particle diameter of haydite is 6-12 mm.
Said 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 each raw material during preparation in proportion, mixing gets final product.
Coal road height of the present invention emits district's compaction material to be used for the tunnel height that colliery thick seam tunnelling process occurs and emits district's filling; Can adopt the pneumatic injection pump to carry out filling during filling; Has good deformation property after solidifying; Have the expansible hysteresis quality, the real tunnel Gao Maoqu of the obturator of formation filling preferably 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
The coal road height emits district's compaction material, is made up 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
The coal road height emits district's compaction material, is made up 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
The coal road height emits district's compaction material, is made up 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
The coal road height emits district's compaction material, is made up 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
The coal road height emits district's compaction material, is made up 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 a mass fraction, gets each raw material during preparation in proportion, and mixing gets final product.
Claims (4)
1. a coal road height emits district's compaction material, it is characterized in that: the raw material by following mass fraction is formed: 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. coal road height as claimed in claim 1 emits district's compaction material, 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. according to claim 1 or claim 2 coal road height emits district's compaction material, and it is characterized in that: the particle diameter of said pearlstone is 1-3mm, and tap density is 90-130kg/m
3The particle diameter of haydite is 6-12 mm.
4. according to claim 1 or claim 2 coal road height emits district's compaction material, and it is characterized in that: said 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.
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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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| CN102491690A true CN102491690A (en) | 2012-06-13 |
| CN102491690B CN102491690B (en) | 2013-04-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251139A (en) * | 2013-06-26 | 2014-12-31 | 河南理工大学 | Filling mining method for caving zone on coal face |
| CN105481314A (en) * | 2015-12-01 | 2016-04-13 | 安徽理工大学 | Coal mine paste-like filling material using construction waste, and preparation and filling method thereof |
| CN106747636A (en) * | 2016-12-12 | 2017-05-31 | 安徽佳泰矿业科技有限公司 | A kind of mining inorganic ultrafine foam filling material and preparation method thereof and application method |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2011
- 2011-12-08 CN CN 201110405857 patent/CN102491690B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538136A (en) * | 2009-04-29 | 2009-09-23 | 华南理工大学 | Premixing mortar with high moisture retention and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郝玉龙等: "煤巷高冒区高水材料固化顶板及防火研究", 《煤》, vol. 8, no. 2, 28 February 1999 (1999-02-28), pages 21 - 23 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251139A (en) * | 2013-06-26 | 2014-12-31 | 河南理工大学 | Filling mining method for caving zone on coal face |
| CN104251139B (en) * | 2013-06-26 | 2016-04-06 | 河南理工大学 | Coal-face Collapsed zone filling mining method |
| CN105481314A (en) * | 2015-12-01 | 2016-04-13 | 安徽理工大学 | Coal mine paste-like filling material using construction waste, and preparation and filling method thereof |
| CN106747636A (en) * | 2016-12-12 | 2017-05-31 | 安徽佳泰矿业科技有限公司 | A kind of mining inorganic ultrafine foam filling material and preparation method thereof and application method |
| 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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| CN102491690B (en) | 2013-04-17 |
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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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