大型地下硐室围岩支护动态设计方法的研究

随着水电建设的发展,地下发电硐室规模越来越大,地质条件也越来越复杂,单一分析方法已不能满足地下硐室围岩锚固稳定分析,需要建立综合性的围岩锚固分析系统。结合拉西瓦水电站的大型地下硐室围岩支护设计过程,提出大型地下硐室围岩支护动态调整法。此方法成功地应用于该工程的围岩支护设计中,收到了良好的经济和社会效益。这种综合性的围岩锚固分析体系可以很好解决大型地下硐室围岩锚固设计。

Research on Dynamic Design Method for Surrounding Rock Bolting of Large Underground Cavern

Along with the development of hydropower construction,the scale of underground cavern for power generation is more and more large,and its geological conditions are more and more complex.So the single analysis method already could not satisfy the needs for the anchor stability analysis of surrounding rocks of the cavern,the comprehensive analysis system for surrounding rock bolting should be set up.Here,combining with the design process of the surrounding rock bolting for the large underground cavern in Laxiwa Hydropower Station,the dynamic design method of surrounding rock bolting for the large underground cavern is proposed,which is applied in the design for surrounding rock supporting of this project successfully,receiving a good economic and social benefits.The practice proves that this analysis system could better solve the problems in the design for surrounding rock anchoring of large underground caverns.