收稿日期: 2022-10-21
修回日期: 2023-02-14
网络出版日期: 2023-07-20
基金资助
国家自然科学基金项目“中低品位磷矿山固废胶结体宏细观损伤特性及充填空区力学效应研究”(52174086);国家自然科学基金项目“顺层坡含碎石滑带土变形及渗流特性研究”(51804222);武汉工程大学研究生教育创新基金(CX2019107)
Quality Evaluation of Tunnel Surrounding Rock in Karst Area Based on Comprehensive Weight-Fuzzy Matter-element Method
Received date: 2022-10-21
Revised date: 2023-02-14
Online published: 2023-07-20
张卫中 , 袁威 , 康钦容 , 夏缘帝 , 李梦玲 . 基于综合权重—模糊物元法的岩溶地区隧道围岩质量评价[J]. 黄金科学技术, 2023 , 31(3) : 487 -496 . DOI: 10.11872/j.issn.1005-2518.2023.03.153
The distribution area of karst in China can reach about 33% of the country’s land area，therefore，in the process of tunnel excavation and construction in karst area，it is inevitable to cross the karst development location.At the same time，due to the hidden nature and irregularity of karst development，water and mud surges may occur locally in tunnel excavation，which greatly reduces the safety and stability of the tunnel and easily causes collapse accidents and threatens construction safety.To solve this problem，the geological situation of the surrounding rock needs to be fully grasped.Therefore，the evaluation of the quality of the surrounding rock is of great significance to the safety of tunnel rock design and construction.In order to scientifically and accurately evaluate the surrounding rock quality of karst tunnels，CRITIC method was used to determine the objective weight of the surrounding rock quality index affecting the tunnel in karst areas according to the measured data.The improved analytic hierarchy process was used to determine the subjective weight，and the combined weight was used to calculate the comprehensive weight of each index.Finally，the classification of surrounding rock was determined according to the fuzzy matter-element theory.Thus，the evaluation method of surrounding rock quality of tunnel in karst areas based on the comprehensive weight-fuzzy matter-element method was proposed，and this method was applied to the evaluation of surrounding rock quality of tunnel group in the seven-star data center of Tencent in karst areas.The research results show that the comprehensive fuzzy evaluation model established by introducing variance coefficients to the CRITIC method and introducing optimal transfer matrix optimization AHP method can avoid the influence of purely human subjective factors and evaluate and grade the rock quality more objectively and comprehensively.The evaluation results are in good agreement with the actual on-site grading，and the method can achieve a more scientific and accurate comprehensive determination of karst tunnel quality.The rock quality of the tunnel in this project example is mainly Ⅳ and Ⅴ surrounding rocks，which are poor and less stable，and the support of the surrounding rocks need to strengthen.
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