摘要
常规封孔测压方法在测定煤层瓦斯压力时,难以准确封堵至目标位置,测定结果的准确性值得商榷。提出采用一种新型封孔测压一体化装置解决该问题,并在木孔煤矿进行了实测,结果表明,在相同的地质单元＋650 m大巷施工埋深相近、倾角和方位角相同的钻孔,所测定的2号煤层的瓦斯压力值比采用填料封孔测压的常规测压法测定的值大0．45~0．56 MPa,测定结果更为准确。
It is difficult to accurately seal the hole to the target location and the accuracy of measuring results is questionable when the conventional gas pressure measuring method by hole sealing was used for gas pressure measurement. For solving this problem, a new integrated gas pressure measuring device by hole sealing was proposed and developed, with this device, actual measurement of gas pressure was conducted in Mukong Coal Mine, the results showed that when the hole with similar buried depth and the same dip angle and azimuth was drilled in-650m main roadway in the same geologic unit, the gas pressure of No. 2 coal seam which was measured by this new device was 0. 45-0. 56 MPa larger than that by conventional gas pressure measuring method by hole sealing with filling.
出处
《矿业安全与环保》
北大核心
2014年第1期47-49,共3页
Mining Safety & Environmental Protection
基金
重庆市自然科学基金项目(cstcjjA00002)
重庆市科技攻关(应用技术研发类Ⅰ重点)项目(cstc2012gg-yyjsB90001)
重庆市科技攻关(应用技术研发类)项目(cstc2012gg-yyjs90001)
关键词
煤层瓦斯压力
测定
封孔测压一体化
coal-seam gas pressure
measurement
integration of gas pressure measurement by hole sealing
