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本文介绍了一个受多次采动压力影响的大跨度、大断面、多交叉点冒落硐室修复工程中进行锚、网、喷联合支护的研究与实践。通过对围岩破坏机理分析,根据围岩松动圈支护原理,采用锚、网、喷联合支护,选择合理的支护参数,由锚杆、混凝土喷层、金属网与围岩的共同作用实现维护的目的,成功地进行了修复施工。
This paper introduces the research and practice of anchor, net and jet joint support in the repair project of large-span, large-section and multi-intersection caving chambers affected by multiple mining pressures. Based on the analysis of the failure mechanism of surrounding rock, according to the supporting principle of the loose rock of surrounding rock, the supporting parameters of anchor, net and spray are selected, and the proper supporting parameters are selected. By the combination of anchor bolt, concrete spray layer, metal net and surrounding rock To achieve the purpose of maintenance, successful repair construction.