Study of sealing technology of downward and permeable borehole
In gas prediction and prevention, it is important for the Mine-managers to know coal-seam gas-pressure.Because of the limitation of geological conditions, some seam can not use upward bore to measure gas pressure, so using downward bore is essential, but coal-seam gas-pressure measure is difficult on the this condition(Xu Q X, 1992).In order to resolve this problem, the way of subsection and time-sharing bole sealing is propounded in this paper.By using this method, the crevice water of wall rock is blockaded effectively and the influence of measure gas pressure by crevice water is avoided.It can provide guarantee to measure gas pressure under the complicated condition.By the local practice, good effect is achieved.
coal-seam upward bore gas-pressure
HU Zu-xiang
College of Resource and Safety, Anhui University of Science and Technology, Huainan 232001 ,China
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
321-324
2014-09-19（万方平台首次上网日期，不代表论文的发表时间）