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结合北京长沟峪煤矿的实际情况,使用声波探测法测定巷道围岩松动圈的范围,根据巷道围岩松动圈支护理论确定长沟峪煤矿巷道围岩属于稳定围岩和较稳定围岩范畴,巷道支护采用喷混凝土支护和锚喷支护,支护设计采用悬吊理论进行。通过对锚杆类型、锚杆长度、锚杆间排距、锚固力、喷射混凝土厚度、混凝土强度等支护参数进行优化设计,选择可靠、合理的支护参数,确保支护经济、安全。
According to the actual situation of Changgouya coal mine in Beijing, the range of rocking zone of surrounding rock is determined by using acoustic detection method. According to the supporting theory of loose rock of surrounding rock, the surrounding rock of Changgouyu coal mine tunnel belongs to stable surrounding rock and relatively stable surrounding rock , Roadway support using spraycrete support and anchor spray support, support design using suspension theory. Through the optimization design of bolt types, bolt length, bolt spacing, anchorage force, shotcrete thickness, concrete strength and other support parameters, select reliable and reasonable support parameters to ensure the support economy and safety.