原相煤矿沿空留巷支护技术研究
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摘要
针对沿空留巷围岩变形大、维护效果差等状况,以原相矿沿空留巷为工程背景,采用数值模拟分析了锚杆预应力承载结构,研究发现预应力承载结构对锚杆发挥主动支护作用具有重要作用,配合锚索的悬吊作用能够有效控制围岩变形。基于预应力承载结构开发了沿空留巷巷内的基本支护和加强支护技术。
According to the situation of gob-side entry retaining with the large deformation and poor support effects,took gob-side entry retaining in Yuanxiang colliery asengineering background,dealt with the numerical simulation analysis the relationship between support inside roadway and prestressed bearing structure. The study found the prestressed bearing structure plays an important role in the active support of the anchorrod, and the suspension effect of the anchor cable can effectively control the deformation of the surrounding rock.Based on the prestressed bearing structure, the basic support inside roadway technology for gob side retaining is developed, reinforced support and reinforced support.
According to the situation of gob-side entry retaining with the large deformation and poor support effects,took gob-side entry retaining in Yuanxiang colliery asengineering background,dealt with the numerical simulation analysis the relationship between support inside roadway and prestressed bearing structure. The study found the prestressed bearing structure plays an important role in the active support of the anchorrod, and the suspension effect of the anchor cable can effectively control the deformation of the surrounding rock.Based on the prestressed bearing structure, the basic support inside roadway technology for gob side retaining is developed, reinforced support and reinforced support.
引文
[1]柏建彪,周华强,侯朝炯,等.沿空留巷巷旁支护技术的发展[J].中国矿业大学学报,2004(2).
[2]袁亮.低透气性高瓦斯煤层群无煤柱快速留巷Y型通风煤与瓦斯共采关键技术[J].中国煤炭,2008,34(6):9-13,4.
[3]陈勇.沿空留巷围岩结构运动稳定机理与控制研究[D].徐州:中国矿业大学,2012.
[4]陈勇,柏建彪,王襄禹,等.沿空留巷巷内支护技术研究与应用[J].煤炭学报,2012,37(6):903-910.
[5]康红普,牛多龙,张镇,等.深部沿空留巷围岩变形特征与支护技术[J].岩石力学与工程学报,2010,29(10):1 977-1 987.
[6]华心祝,马俊枫,许庭教.沿空留巷巷旁锚索加强支护与参数优化[J].煤炭科学技术,2004(8):60-64.
[2]袁亮.低透气性高瓦斯煤层群无煤柱快速留巷Y型通风煤与瓦斯共采关键技术[J].中国煤炭,2008,34(6):9-13,4.
[3]陈勇.沿空留巷围岩结构运动稳定机理与控制研究[D].徐州:中国矿业大学,2012.
[4]陈勇,柏建彪,王襄禹,等.沿空留巷巷内支护技术研究与应用[J].煤炭学报,2012,37(6):903-910.
[5]康红普,牛多龙,张镇,等.深部沿空留巷围岩变形特征与支护技术[J].岩石力学与工程学报,2010,29(10):1 977-1 987.
[6]华心祝,马俊枫,许庭教.沿空留巷巷旁锚索加强支护与参数优化[J].煤炭科学技术,2004(8):60-64.