抽水蓄能电站交通隧洞围岩分级方法研究

Study on Classification Method of Surrounding Rock of Traffic Tunnel in Pumped Storage Power Station

针对缙云抽水蓄能电站交通隧洞,结合影响隧洞围岩分级的主要因素,基于模糊数学分析方法,对隧洞围岩等级进行模糊综合评判,最终得出不同断面的围岩分级结果。研究表明:由于工程区域地质条件复杂,采用模糊综合评判法其围岩分级结果与现场评定结果大体一致,仅部分区域分级结果较现场评定结果略高;采用模糊综合评判法结合专家经验,避免了采用规范法进行围岩评级难以综合考虑各种模糊因素所造成的缺陷,可得到更加合理的岩体质量评定分级结果,工程建设中具有较高的应用价值。

Aiming at the traffic tunnel of Jinyun Pumped Storage Power Station,combined with many factors affecting the grade of surrounding rock,the fuzzy comprehensive evaluation of tunnel surrounding rock grade is carried out based on using fuzzy mathematics calculation,and the grade of surrounding rock of different sections is divided finally.The research results show that due to the complex geological conditions in the region,the classification results of the fuzzy comprehensive evaluation method are basically consistent with the classification results used in the field,and only some areas have slightly higher classification results.The fuzzy comprehensive evaluation method combined with expert experience solves the defects caused by the difficulty of comprehensively considering various fuzzy factors when using standard method for surrounding rock grading,and can obtain more reasonable rock mass quality assessment and classification results,which has high application value in engineering construction.