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| Study and Analysis on Water-absorption ofCoal on the Condition of Pressure |
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Received:April 16, 2013
Revised:September 16, 2015
Accepted:April 23, 2013
Published Online:December 29, 2015
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| DOI： |
| KeyWord:safety accident；coal seam water; seepage flow effect; water injection pressure; pressure parameters |
| Author | Institution |
| ZHEN Hao |
Handan special equipment supervision and Inspection Institute |
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| Abstract: |
| Coal seam water infusion can lower dust when digging, so a technical research of declining dust is urgent. In the research, we change the water-flooding parameters by different water pressure and get suitable water pressure by contrasting of circumstance under the different parameters to the coal kind. Carrying on an experiment in pure water to the coal with 2.5MPa、6MPa and 10MPa, we can see that, the pressure is bigger neither the absorbing water of coal effect is better, which the higher pressure may change the hole of coal inner part to distribute and make coal seam water lower. The No.1 coal kind under the condition of 10 MPa still could not reach to the safety standard, research must be carried out on the active agent formulation，and the No.2 coal kind under the condition of 6 and 10MPa noting water effect has already satisfied a safety request. Under the pure water condition, we need to carry on a pressure experiment to different coal to get the most suitable water pressure. Used in a Shanxi coal mine, has certain practical value. |
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