摘要
为研究塔山煤矿高强度开采条件下瓦斯高涌出问题,对大同矿区塔山煤矿实施地面L型钻井工程,L型井采用三开井身结构,一开采用φ444.5 mm钻头钻至基岩面下60 m,下入φ339.7 mm×9.65 mm表层套管固井;二开采用φ216 mm钻头导向,φ311 mm钻头钻至480 m,下入φ244.5 mm×8.94 mm技术套管后固井候凝;三开采用φ216 mm钻头钻至靶点866 m完钻,下入φ168.28 mm×8.94 mm技术套管。该成果可为同煤集团矿井大采高综放工作面瓦斯治理探索新的途径。
In order to study the problem of high gas emission under the condition of high strength mining in Tashan Coal Mine,the ground L-type drilling project was carried out in Tashan Coal Mine of Datong Mining Area.The L-type well adopts three-hole body structure.In the first operation,theφ444.5 mm drill bit was drilled to 60 m below the bedrock surface,and theφ339.7 mm×9.65 mm surface casing was cemented.The second opening is guided byφ216 mm drill bit,theφ311 mm drill bit is drilled to 480 m,and theφ244.5 mm×8.94 mm technical casing is used for cementing.Theφ216 mm bit was drilled to the target 866 m,and theφ168.28 mm×8.94 mm technical casing was drilled.The results can explore new ways for gas control in fully mechanized caving face with large mining height in Datong Coal Mine Group.
作者
王晓民
Wang Xiaomin(Hydrology Team 2,Xingtai 054000,China)
出处
《煤炭与化工》
CAS
2022年第6期117-119,共3页
Coal and Chemical Industry
关键词
瓦斯涌出
L型钻井
瓦斯治理
固井
gas emission
L-type drilling
gas control
cementing
