CN101845966B - Process for filling coal mine goaf - Google Patents
Process for filling coal mine goaf Download PDFInfo
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- CN101845966B CN101845966B CN2009102441258A CN200910244125A CN101845966B CN 101845966 B CN101845966 B CN 101845966B CN 2009102441258 A CN2009102441258 A CN 2009102441258A CN 200910244125 A CN200910244125 A CN 200910244125A CN 101845966 B CN101845966 B CN 101845966B
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- cement
- flyash
- gangue
- filling
- coal mine
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Abstract
The invention discloses a process for filling a coal mine goaf, comprising the following steps: feeding cement, gangue and water in a stirring tank; stirring into filler pulp; and transferring the filler pulp into the mine goaf in a gravity manner. According to the process for filling the coal mine goaf, the gangue is taken as a main filling material, cement and water are used as auxiliary materials, and water is added for filing. The gangue, cement and flyash used for filing the mine goaf are easily obtained from the mine, and the filler pulp which is prepared by stirring in the coal mine goaf filling process has convenient concentration adjusting.
Description
Technical field
The present invention relates to a kind of goaf filling technology, especially relate to a kind of process for filling coal mine goaf.
Background technology
Mine worked-out section is the dead zone that the mining back stays below the face of land, if do not fill, can cause surface collapse, brings danger.Traditionally, the mine worked-out section filling is to utilize tailings as the filling major ingredient, and cement etc. are as the glued auxiliary material of filling.Tailing slurry is moisture, so the concentration adjustment of filling slurry is complicated.
For coal mine gob, also seldom carry out backfill at present, the goaf that stays after therefore mining has become a dangerous matter sources for the coal-producing area, in the many banks of China surface collapse has taken place.Therefore, it is imperative coal mine gob to be carried out filling.But traditional filling process has not been suitable for the filling of coal mine gob.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.For this reason, the process for filling coal mine goaf that the one object of the present invention concentration that is to propose a kind of filling slurry is easy to regulate and the filling raw material is easy to get.
According to a kind of process for filling coal mine goaf of the present invention, may further comprise the steps: cement, gangue and water are supplied in the agitation tank; The cement, gangue and the water that supply in the agitation tank are stirred into filling slurry; With being flow automatically, filling slurry is transported to mine worked-out section.
According to process for filling coal mine goaf of the present invention, the gangue, cement and the flyash that are used for the filling coal mine gob obtain in the colliery easily, and the concentration of the filling slurry that stirring forms in the process for filling coal mine goaf process is beneficial to adjusting.
In addition, also have following additional technical feature according to process for filling coal mine goaf of the present invention:
Said process for filling coal mine goaf further comprises flyash is supplied in the agitation tank.
Alternatively, the weight ratio of said cement, flyash, gangue is 1: 4: 15.
In an embodiment of the invention, the weight ratio of said cement and gangue is 1: 15.
According to process for filling coal mine goaf of the present invention, as the filling major ingredient, cement and flyash are as auxiliary material with gangue; Add the water filling, make the concentration of filling slurry be beneficial to adjusting, and because the flyash price is low with respect to cement; Under the situation of part place of cement, thereby practice thrift cost.
Said cement and flyash supply in the agitation tank through the duplex tube helix feeding machine respectively, and the scalable quantity delivered.
Said gangue supplies in the agitation tank through the gangue rubber conveyer.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the sketch map of filling system that is used for the process for filling coal mine goaf of embodiment of the present invention; With
Fig. 2 is according to process for filling coal mine goaf flow chart of the present invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; Term " on ", the orientation of indications such as D score, " top ", " end " or position relation be for based on orientation shown in the drawings or position relation; Only be for the ease of describing the present invention rather than requiring the present invention therefore can not be interpreted as limitation of the present invention with specific azimuth configuration and operation.
Describe according to process for filling coal mine goaf of the present invention with reference to Fig. 1-2 below.
At first the coal mine gob filling system that is used for embodiment of the present invention is described with reference to figure 1.
Coal mine gob filling system comprises cement bin 1, gangue hopper 2, pond 3 and the agitation tank 4 that is used to store cement.
Agitation tank 4 has inlet 41 and outlet 42; Inlet 41 links to each other with cement bin 1, gangue hopper 2 and pond 3 to admit cement, gangue and water, and outlet 42 links to each other with the boring pipeline A of coal mine gob top and supplies in the coal mine gob with the filling slurry that cement, gangue and water stirring are prepared from.
In a concrete example, coal mine gob filling system also comprises gangue rubber conveyer 6 and disk feeder 7.Gangue rubber conveyer 6 is arranged between agitation tank 4 and the gangue hopper 2 and is used for gangue is supplied in the agitation tank 4 from gangue hopper 2.And disk feeder 7 is arranged between gangue hopper 2 and the gangue rubber conveyer 6, so that gangue is transported on the gangue rubber conveyer 6, thereby is transported in the agitation tank 4.Particularly, disk feeder 7 is arranged on the bottom of gangue hopper 2.
In one example, coal mine gob filling system also comprises the flyash storehouse 5 that is used to store flyash, and flyash storehouse 5 links to each other with the inlet 41 of agitation tank 4 and is used in agitation tank 4, supplying with flyash.
In another example of the present invention; Coal mine gob filling system also comprises air compressor machine 8 and gasholder 9; Air compressor machine 8 links to each other with the air inlet port of gasholder 9 and the gas outlet of gasholder 9 links to each other with the bottom of flyash storehouse 5 with cement bin 1 respectively; Make the flyash of 5 bottoms, flyash storehouse and the cement fluidization of cement bin 1 bottom when need being used to, discharge with the outlet at bottom of cement bin 1 so that flyash and cement are easy to from the flyash storehouse 5.
More specifically; Coal mine gob filling system also comprises the first duplex tube helix feeding machine 11 and the second duplex tube helix feeding machine 51 that is used for feeding; Wherein, the first duplex tube helix feeding machine 11 is arranged between agitation tank 4 and the cement bin 1, is used for cement supply to agitation tank 4 and regulate quantity delivered.The second duplex tube helix feeding machine 51 is arranged between agitation tank 4 and the flyash storehouse 5, is used for flyash is supplied to agitation tank 4 and regulates quantity delivered.
In addition, above cement bin 1 and flyash storehouse 5, also be respectively equipped with first dust-precipitator 12 and second dust-precipitator 52, the dedusting when being used for cement and ash transfer entering cement bin and flyash storehouse.
Need to prove; Term " links to each other " and should do broad understanding, and for example the inlet of agitation tank links to each other with cement bin, can be that the inlet of agitation tank links to each other through pipeline with the outlet opening of cement bin; Also can be that cement bin is arranged on the agitation tank top; Fall in the agitation tank from the cement that cement bin is discharged, the cement of perhaps discharging from cement bin is transported in the agitation tank through the duplex tube helix feeding machine, and this can and understand for those of ordinary skill in the art easily.
The filling flow process of describing according to process for filling coal mine goaf of the present invention with reference to figure 2 below.
(1) from cement bin 1, supply to cement in the agitation tank 4 through the first duplex tube helix feeding machine 11; Gangue gets into disk feeder 7 and is admitted in the agitation tank 4 through gangue rubber conveyer 6 then from gangue hopper 2; Wherein, the weight ratio of cement and gangue is 1: 15.
In an example of the present invention, can also flyash be supplied in the agitation tank 4 from flyash storehouse 5 through the second duplex tube helix feeding machine 51, and make that the weight ratio of cement, flyash, gangue is 1: 4: 15.
Wherein, cement and flyash are discharged from cement bin 1 and flyash storehouse 5 respectively.When needs, earlier compressed air is fed cement bin 1 and 5 bottoms, flyash storehouse by air compressor machine 8 and gasholder 9, make cement and flyash fluidization, so that flyash and cement are easy to from the flyash storehouse 5 and the outlet at bottom discharge of cement bin 1.
In addition, pond 3 supplies water in the agitation tank 4.
Cement, gangue, flyash and the water that (2) will supply in the agitation tank 4 stir into filling slurry.
(3) from agitation tank 4 filling slurry is transported to the boring pipeline A of coal mine gob top from exporting 42 gravity flows, thereby the goaf (not shown) is carried out filling.
According to process for filling coal mine goaf of the present invention, as the filling major ingredient, cement and flyash is as auxiliary material with gangue, adds water and stirs into filling slurry and carry out filling.The gangue that is used for the filling coal mine gob produces in the colliery, and near coal mine gob, has power plant usually, output flyash, and therefore, the filler that uses in the process for filling coal mine goaf of the present invention is easy to get.And the concentration that in this process for filling coal mine goaf, stirs the filling slurry that forms is beneficial to adjusting.In addition, because the flyash price is low with respect to cement, therefore, under the situation of part place of cement, the weight ratio of cement and flyash was made as 1: 4, thereby can reduces filling cost.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (5)
1. a process for filling coal mine goaf is characterized in that, may further comprise the steps:
With cement, gangue, flyash and water respectively from cement bin, gangue hopper, flyash storehouse and pond supply in agitation tank; Wherein with said cement and said flyash when said cement bin and flyash storehouse supply in the said agitation tank, thereby through air compressor machine and gasholder to the underfeed gas in said cement bin and flyash storehouse so that said cement is convenient in the cement of said cement bin and bottom, flyash storehouse and flyash fluidization and said flyash is discharged from said cement bin and flyash storehouse respectively;
The cement, gangue, flyash and the water that supply in the agitation tank are stirred into filling slurry; With
The filling slurry gravity flow is transported to mine worked-out section.
2. process for filling coal mine goaf according to claim 1 is characterized in that, the weight ratio of said cement, flyash, gangue is 1: 4: 15.
3. process for filling coal mine goaf according to claim 1 is characterized in that, the weight ratio of said cement and gangue is 1: 15.
4. process for filling coal mine goaf according to claim 1 is characterized in that said cement and flyash supply in the agitation tank through the duplex tube helix feeding machine respectively.
5. process for filling coal mine goaf according to claim 1 is characterized in that said gangue supplies in the agitation tank through the gangue rubber conveyer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102441258A CN101845966B (en) | 2009-12-29 | 2009-12-29 | Process for filling coal mine goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102441258A CN101845966B (en) | 2009-12-29 | 2009-12-29 | Process for filling coal mine goaf |
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| Publication Number | Publication Date |
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| CN101845966A CN101845966A (en) | 2010-09-29 |
| CN101845966B true CN101845966B (en) | 2012-08-22 |
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| CN2009102441258A Active CN101845966B (en) | 2009-12-29 | 2009-12-29 | Process for filling coal mine goaf |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556917A (en) * | 2014-12-22 | 2015-04-29 | 咸阳东方雨虹建筑材料有限公司 | High-early-strength filling material for coal mine goaf |
| CN104762950B (en) * | 2015-04-07 | 2016-04-27 | 山西交科岩土工程有限公司 | Highway goaf harnessing method |
| CN105690559B (en) * | 2016-01-28 | 2018-05-08 | 中国矿业大学(北京) | A kind of filling preparation that can save binder dosage |
| CN109053084A (en) * | 2018-09-27 | 2018-12-21 | 太原理工大学 | A method of coal mine paste filling material is prepared using scrap glass |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1433922A (en) * | 1973-04-27 | 1976-04-28 | Coal Industry Patents Ltd | Packing debris in mines |
| 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 |
| CN1782326A (en) * | 2004-12-03 | 2006-06-07 | 河北金牛能源股份有限公司 | Method for treating waste rock in coal mine |
| CN101008316A (en) * | 2007-01-31 | 2007-08-01 | 贵州开磷（集团）有限责任公司 | Phosphogypsum cementing and post-filling mining method and pulping technology thereof |
| 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 |
-
2009
- 2009-12-29 CN CN2009102441258A patent/CN101845966B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1433922A (en) * | 1973-04-27 | 1976-04-28 | Coal Industry Patents Ltd | Packing debris in mines |
| 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 |
| CN1782326A (en) * | 2004-12-03 | 2006-06-07 | 河北金牛能源股份有限公司 | Method for treating waste rock in coal mine |
| CN101008316A (en) * | 2007-01-31 | 2007-08-01 | 贵州开磷（集团）有限责任公司 | Phosphogypsum cementing and post-filling mining method and pulping technology thereof |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 王新民等.煤矸石作为胶结充填骨料性能的实验研究.《矿业快报》.2006,(第03期), * |
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