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目前对于存在岩脉情况下的地下洞室间距和围岩稳定的研究较少,通过采用FLAC~(3D)有限差分的数值分析方法,对岩脉条件下的抽水蓄能电站地下洞室间距问题进行研究分析.以惠州抽水蓄能电站为例,对比分析了地下厂房围岩在不同设计方案下的应力、位移以及塑性区的分布特征,结果显示,在岩脉部位出现了应力集中、位移较大及塑性区增大的现象,根据结果确定了主厂房与主变洞的合理间距.并分析了该间距在锚杆支护条件下的围岩稳定性,总结得出了岩脉在地下洞室间距的确定过程中的影响特征及其对围岩稳定的影响,对与此相类似的工程起到一定的参考和指导作用.
At present, there are few researches on the underground cavity spacing and surrounding rock stability in the presence of dikes. Through the numerical analysis using FLAC 3D finite difference method, the underground cavity spacing problem of pumped storage power station under dikes Taking Huizhou Pumped Storage Power Station as an example, the stress, displacement and plastic zone distribution characteristics of surrounding rock of underground powerhouse under different design schemes are comparatively analyzed. The results show that stress concentration and displacement Large and plastic zone increased, according to the results to determine the reasonable spacing between the main plant and the main tunnel.And analyzed the stability of the surrounding rock under the conditions of bolt support, concluded that the dikes in the underground cave The characteristics of the influence of the determination of the inter-room distance and its influence on the stability of the surrounding rock play a certain reference and guidance role for similar projects.