大断面沿空留巷围岩支护技术优化研究  

Optimization of Surrounding Rock Support Technology for Large-section Gob Side Entry Retaining

作　　者：李吉祥 LI Jixiang(Sitai Mine,Jinneng Holding Coal Industry Group Co.,Ltd.,Datong 037052,Shanxi,China)

机构地区：[1]晋能控股煤业集团有限公司四台矿,山西大同037052

出　　处：《能源与节能》2024年第12期318-320,共3页Energy and Energy Conservation

摘　　要：在煤矿巷道的施工与运营中,由于岩体强度不足和稳定性较差,经常会发生顶板坍塌和涌水等灾害。以山西A矿沿空留巷巷道为研究对象,通过现场调查和分析围岩变形情况,提出了“超前预注浆+锚杆索网+U型钢+喷射混凝土”的综合支护方案,并通过数值模拟和实际应用验证了该方案的有效性,围岩变形得到了有效控制,巷道的稳定性也有所增强,还为类似地质条件的施工提供了可行的解决方案。In coal mine roadway construction and operation,due to the insufficient strength and poor stability of rock mass,disasters such as roof collapse and water gushing often occur.Taking the gob side entry retaining of Shanxi A Mine as the research object,through field investigation and analysis of surrounding rock deformation,a comprehensive support scheme of"pre-grouting+anchor cable net+U-shaped steel+shotcrete"was proposed,the effectiveness of the scheme was verified through numerical simulation and practical application,the deformation of surrounding rock was effectively controlled,and the stability of the roadway was enhanced.It can provide a feasible solution for the construction of similar geological conditions.

关 键 词：围岩变形 沿空留巷 综合支护 

分 类 号：TD353[矿业工程—矿井建设]