论文部分内容阅读
随着抽水蓄能电站工程建设的不断增多,抽水蓄能电站地下厂房洞室群围岩稳定性越来越受到重视。而洞室洞轴线走向选取是否合理将直接影响洞室的开挖进度和安全。洞室布置除了要满足功能要求外,还要充分考虑结构面产状等多方面的因素。当洞室穿越断层、节理等破碎带时,要尽可能让洞室不同结构面组合成的围岩关键块体达到最小。对于上述问题,该文基于Unwedge程序的工作原理,以广东惠州抽水蓄能电站输水隧洞为例,运用此程序,考虑输水隧洞计算区域内不同区段不同结构面组合在不同洞室走向条件下围岩关键块体的大小,评价隧洞围岩稳定性,提出了输水隧洞的合理走向。
With the continuous construction of pumped storage power station project, the stability of surrounding rock mass of underground powerhouse of pumped storage power station is paid more and more attention. The reasonable selection of the cavern cave axis will directly affect the excavation progress and safety of the cavern. Cavern layout in addition to meet the functional requirements, but also give full consideration to the structural surface and other factors. When the cavern passes through faults, joints and other broken belts, it is necessary to minimize the key blocks of surrounding rock formed by the combination of different structural planes in the cavern. Based on the working principle of Unwedge program and taking the water conveyance tunnel of Huizhou Pumped Storage Power Station in Guangdong as an example, this paper considers the combination of different structural planes in different sections of the water conveyance tunnel in different cavern conditions The size of the key block of the surrounding rock, evaluate the stability of the surrounding rock of the tunnel, and put forward the reasonable trend of the water conveyance tunnel.