Hydraulic drill hole reaming technology with large flow and draining of coal mine gas
This paper takes Zhaozhuang mine in Shanxi province as an example to study the technology of hydraulic reaming drill hole for improving the gas extraction. The influence of the physical properties of coal seam on the hydraulic reaming drill holes and the draining of coal mine gas were analyzed and d...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-12-01
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| Series: | International Journal of Mining Science and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268617304251 |