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为了更加安全、高效地处理巷道掘进过程中的大范围冒顶事故,结合谢桥矿13318E工作面轨道顺槽大范围冒顶事故处理的工程实践,对适合于治理此类事故的新型高分子化学注浆技术进行研究。为验证高分子化学注浆材料处理巷道大范围冒顶的有效性,测试了马丽散材料井下实际力学强度并分析其加固作用机理,同时运用了钻孔窥视及巷道表面位移观测等研究方法对其实际加固效果进行检验。研究表明,罗克休材料完全充满大冒顶造成的顶板空腔,起到传递顶板岩层载荷的作用;而马丽散浆液均匀扩散,将破碎煤岩体重新胶结为具有较大承载性能的整体。加固后的冒顶段巷道在后续掘进过程中保持了长期的稳定,未发生二次冒落失稳;高分子化学注浆加固技术圆满处理了13318E工作面轨道顺槽大范围冒顶事故。
In order to deal with the large-scale roof-fall accidents in tunneling process more safely and efficiently, in combination with the engineering practice of large-scale roof-fall accident treatment in 13318E face of Xieqiao Mine, a new type of polymer chemical grouting suitable for such accidents Technology research. In order to verify the effectiveness of macromolecule chemical grouting material for the treatment of large-scale roof fall in tunnels, the actual mechanics strength of Mali bulk material underground was tested and its reinforcement mechanism was analyzed. At the same time, the research methods such as drilling peep and lane surface displacement observation The actual reinforcement effect test. The research shows that the rock fill material is completely filled with the roof cavity caused by the large roof caving, which plays the role of transmitting the load of roof rock strata. However, the slurry of Ma Li disperses evenly and reintegrates the broken coal rock mass into a whole bearing large bearing capacity. After the reinforcement of the roof section of the roadway in the follow-up process to maintain a long-term stability, did not occur secondary to the fall of instability; polymer chemical grouting reinforcement technology to successfully handle the 13318E face orbital groove large-scale fallout.