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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Bibliographic Details
Main Author: Li Dingqi
Format: Article
Language:English
Published: Elsevier 2019-12-01
Series:International Journal of Mining Science and Technology
Online Access:http://www.sciencedirect.com/science/article/pii/S2095268617304251