松软围岩巷道锚杆加固的理论分析与工程实践

Theory analysis and engineering practice of reinforcing soft surrounding rock roadway with bolting

应用锚杆支护围岩强度强化理论 ,建立了锚固体力学参数强化模型。由于锚杆对围岩强度的强化作用 ,松软围岩巷道采用锚杆加固时 ,能在巷道围岩内形成强度较高的承载结构 ,从而可维护巷道的稳定。据此对加固方案的锚杆参数进行了计算和分析 ,并用于工程实践。

The theory of strengthening surrounding rock supported with bolting is applied in this paper. Then the strengthening model of mechanics parameters of bolting body is established. Because of strengthening surrounding rock by bolting, a high load bearing capacity structure around the roadway can be formed when applying bolt to reinforce soft surrounding rock. Thus the roadway can be kept stable. On the basis of this principle, the parameters of reinforcing project are calculated and they are applied in engineering practice.