【摘要】 通过对常用的几种测压工艺优缺点分析,提出聚氨酯-胶囊带压注浆封孔测压技术。并对钻孔周边裂隙圈的分析,优化了注浆参数,在上社煤矿进行现场实验。结果表明:水泥浆带压后能有效封堵钻孔周边的裂隙,测得的瓦斯压力更加接近原始瓦斯压力。更多还原

【Abstract】 Through analysis on commonly used processes, sealing technology of polyurethane-capsule and grunting withpressurre in borehole for gas pressure measurement is put forward. Based on analysis of fracture area,grouting parameters was optimized, and experiments were done in Shangshe coal mine.Results show that cement slurry with pressure can effectively plug fracture, measurement of gas pressure is more close to the original gas pressure.更多还原