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机构地区:[1]平煤神马集团,河南平顶山467000 [2]济南澳科矿山工程技术有限公司,济南250031 [3]山东安科矿山支护技术有限公司,济南250000
出 处:《煤炭技术》2017年第2期12-14,共3页Coal Technology
基 金:中国博士后基金资助项目(20090461257)
摘 要:针对深部地层力学环境条件下高应力软岩巷道围岩大变形控制难题,总结分析了深部巷道围岩控制的4种技术途径,提出了深井巷道高强全锚注支护控制理念,通过高强中空注浆锚杆、高强中空注浆锚索对围岩进行大范围高压注浆,实现围岩承载结构的延扩及自承能力的提升。试验表明:高强锚注支护能够充填围岩宏观裂隙、挤压楔固密实围岩孔裂隙,改善围岩力学性能,有效控制了离层向纵深发展。Aiming at the mechanical properties of the brittle ductile transition of surrounding rock of deep mine roadway and the large deformation of soft rock in geological engineering, analysis of the four ways of deep roadway surrounding rock control are summarized, put forward the bolting control idea of the whole strength of deep mine roadway, by the high strength, high strength hollow grouting anchor hollow grouting anchor for a large range of high pressure grouting of surrounding rock support structure, realize the extension of the extended self beating capacity improvement. Experiments show that: high strength bolting support can rock filling of macro cracks,extrusion wedge rock pore fracture rock compacting, improve the mechanical properties, the effective control of the separation to develop in depth.
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