刘园子煤矿三软煤层巷道支护技术
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摘要
为了解决沙井子矿区刘园子煤矿"三软煤层"巷道因岩石松软、易膨胀,遇风风化、遇水泥化等导致的严重变形,现场尝试直墙半圆拱锚网索喷+底板反底拱混凝土浇筑+包裹注浆联合支护方式,有效将"三软煤层"开拓,巷道年变形量控制在50 mm左右。
In order to solve the serious deformation caused by soft rock, easy expansion, wind weathering and cement in the three soft seamroadway of Liuyuanzi Mine, the combined support method of pouring concrete wrapped grouting of reverse bottom arch bottom slab with straight wall semi-circular arch anchor mesh and bottom slab plan was adopted, which effectively developed three soft coal seams and controlled the annual deformation of roadway at about 50 mm.
In order to solve the serious deformation caused by soft rock, easy expansion, wind weathering and cement in the three soft seamroadway of Liuyuanzi Mine, the combined support method of pouring concrete wrapped grouting of reverse bottom arch bottom slab with straight wall semi-circular arch anchor mesh and bottom slab plan was adopted, which effectively developed three soft coal seams and controlled the annual deformation of roadway at about 50 mm.
引文
[1]吴定洪,冯红.深孔泄压注浆治理软岩巷道底鼓[J].煤炭技术,2004,23(9):56-57.
[2]纪海玉,张琰岽,宁杉.软岩巷道钢筋注浆锚网喷支护技术研究与应用[J].煤炭技术,2018,37(11):24-26.
[3]张乾龙,王涛,薛鹏.深部构造区软岩巷道底鼓治理技术研究[J].煤炭技术,2018,37(11):48-51.
[4]周翠英,邓毅梅,谭祥韶,等.饱水软岩力学性质软化的试验研究与应用[J].岩石力学与工程学报,2005,24(10):33-38.
[5]张农,李桂臣,许兴亮.泥质巷道围岩控制理论与实践[M].徐州:中国矿业大学出版社,2011.
[6]柴肇云.物化型软岩包覆改性理论及应用[M].北京:煤炭工业出版社,2011.
[7]庞建勇.软弱围岩隧道新型半刚性网壳衬砌结构研究与应用[M].徐州:中国矿业大学出版社.
[2]纪海玉,张琰岽,宁杉.软岩巷道钢筋注浆锚网喷支护技术研究与应用[J].煤炭技术,2018,37(11):24-26.
[3]张乾龙,王涛,薛鹏.深部构造区软岩巷道底鼓治理技术研究[J].煤炭技术,2018,37(11):48-51.
[4]周翠英,邓毅梅,谭祥韶,等.饱水软岩力学性质软化的试验研究与应用[J].岩石力学与工程学报,2005,24(10):33-38.
[5]张农,李桂臣,许兴亮.泥质巷道围岩控制理论与实践[M].徐州:中国矿业大学出版社,2011.
[6]柴肇云.物化型软岩包覆改性理论及应用[M].北京:煤炭工业出版社,2011.
[7]庞建勇.软弱围岩隧道新型半刚性网壳衬砌结构研究与应用[M].徐州:中国矿业大学出版社.