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日前,中国煤炭地质总局所属水文地质局承担的全国煤炭行业首例“L”型三维水平井——同煤塔山煤矿瓦斯抽采井项目顺利竣工。该项目以两靶点相对方位角305.6°、最大井斜角81.5°、水平裸孔206.51m的高难度钻探作业,为同煤集团解决了以塔山煤矿为典型的高强度开采条件下瓦斯涌出量大的难题,消除了工作面生产中的瓦斯隐患,也为大采高综放工作面瓦斯治理探索出了新的途径,开创了全国煤炭系统先河。
Recently, the first “L” type horizontal well in China’s coal industry borne by the Bureau of Geology and Geology of China General Administration of Geology has successfully completed the gas extraction well project of Tashan Coal Mine. The project with two targets at an azimuth of 305.6 °, the maximum inclination angle of 81.5 °, horizontal bare hole 206.51m difficult drilling operations, with the Datong Coal Mine Group to solve the typical high-intensity mining conditions gas emission Large amount of problems, eliminating the gas hidden dangers in the production of face, but also explore a new way for gas control of the fully mechanized top coal caving mining face, creating a precedent for the national coal system.