探析煤层瓦斯压力测定方案设计  

Analysis of Coal Seam Gas Pressure Measurement Plan Design

作　　者：张海军 ZHANG Hai-jun(Shanxi Xinjing Coal Industry Co.,Ltd.,Yangquan 045000,China)

机构地区：[1]山西新景矿煤业有限责任公司,山西阳泉045000

出　　处：《机电工程技术》2018年第9期206-207,共2页Mechanical & Electrical Engineering Technology

摘　　要：在原套管-水泥封孔工艺的基础上,对封孔套管及法兰盘进行改造加工,采用3次注浆法对钻孔进行封堵,最高承受6 MPa高压的注浆压力。改进的新封孔工艺封孔严密,高压注浆作业操作简单、安全,有效填充测试区域岩层裂隙,避免由于岩层裂隙的存在造成测压失败。On the basis of the original casing-cement sealing technology, the casing and flange for sealing hole were modified and processed. The borehole was plugged by three times grouting method. And the maximum grouting pressure of 6 MPa high pressure is withstood. The improved new sealing technology has the advantages of tight sealing, simple and safe operation of high pressure grouting, effective filling of rock fracture in test area, and avoiding the failure of pressure measurement due to the existence of rock fracture.

关 键 词：瓦斯压力 封孔 穿层钻孔 瓦斯含量 瓦斯参数 

分 类 号：TD82[矿业工程—煤矿开采]