富水松散地层斜井井筒普通综掘法施工技术
Practices on Selection and Application of Hydraulic Powered Support for Fully Mechanized Coal Mining Face
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摘要: 针对内蒙古西部矿井建设过程中遇到的富水松散白垩纪地层对建井施工影响极大,且采用冻结法施工井筒工期较长的问题,采用普通综掘法施工替代冻结法施工通过白垩纪地层。介绍了综掘机掘进+小型挖掘机装矸+箕斗运送的综合机械一体化斜井井筒普通施工技术,制定了探、降、截、疏等综合防治水方案;设计采用36U型钢喷混凝土+钢筋混凝土砌碹和锚网喷+钢筋混凝土砌碹2种支护方式;研发了软弱岩层底板处理技术、出渣工艺、综掘机排矸链条堵塞处理技术、运输安全技术等。采取上述措施后,有效遏制了该地区地层富水松散特性对井筒施工的不利影响,解决了装载和运输矸石困难等难题。Abstract: In order to select a hydraulic powered support suitable for mining conditions of the coal mining face in No. 15 seam of Jincheng Mining Area and to realiz e the mine high production and high efficiency, based on the application experiences of the ZZ6000/17/32 mode hydraulic powered support applied in No.15 seam minin g of Wangtaipu Mine and the mine strata pressure observation information, the powered support stressed conditions in No.2306 coal mining face of the mine were studi ed when the immediate roof initially fell down, the main roof initially pressurized, the main roof pressurized periodically and pressurized non-periodically.A study and an alysis on the insufficient rated working resistances of the support in the coal mining face and the problems existed in the powered support were conducted.The results s howed that the ZY 10000/16/32D mode two legs shield powered support selected for the coal mining face would have good suitability to the mining conditions of No.15 s eam in the mining area.