煤矿安全2012，Vol.43Issue(7)：66-68,3.
下向穿层测压钻孔排水与封孔方法
Drainage and Sealing Method in Downward Cross- layer Gas Pressure Determination Borehole
张智峰 1张瑞林1
作者信息
- 1. 河南理工大学安全科学与工程学院,河南焦作454000
- 折叠
摘要
Abstract
Accurate determination of coal seam gas pressure is the effective protection of the prediction and prevention of mine gas, drilling water gushing and hydrocele problem are often encountered in measuring downward cross - layer borehole pressure process in rich water surrounding rock, which not only increase the difficulty of grouting sealing, but also influence the authentieity and reliability of the original gas pressure because of the impact of water pressure. To solve above problems, this paper attempts to explore the drain- age and sealing method under the conditions of water gushing and hydroeele in downward cross - layer gas pressure determination bore- hole. The field practice in Gedian mine of Shenhuo coal and electricity group proved that this method can effectively avoid the adverse effects of residual water and continued gushing caused by downward cross - layer gas pressure determination borehole and can more ac- curately measure the original gas pressure of the coal seams.关键词
下向钻孔/钻孔排水/压力测试/封孔/瓦斯压力测定Key words
downward drilling holes/drilling drainage/pressure test/sealing borehole/gas pressure determination分类
矿业与冶金引用本文复制引用
张智峰,张瑞林..下向穿层测压钻孔排水与封孔方法[J].煤矿安全,2012,43(7):66-68,3.
