基于AHP的模糊综合法岩溶隧道溶洞处置方案比选

Comparison and Selection of Karst Tunnel Treatment Scheme Based on AHP Fuzzy Comprehensive Method

摘要: 当前国家大力推动基础设施建设，溶洞问题逐渐成为工程建设中的一大难题。溶洞的存在不仅会影响工程安全性，还会增加工程成本和施工难度。因此，合理确定隧道溶洞跨越方案十分有意义。使用三维激光扫描仪获取溶洞基础数据，由于溶洞位于隧道下方，提出4种隧道岩溶溶洞处置措施。通过Midas GTS NX三维数值分析软件模拟，结合地质勘察与施工设计表明，4种处置方案各有优劣，溶洞处置应综合考虑多因素影响，合理选择最优处置方案。采用AHP的模糊综合评价法，对溶洞处置方案进行全面、客观的比选和评价。通过这种方法，可以充分考虑各种因素的影响，基于上述研究方法，得出了最优的溶洞处置方案为C20混凝土回填。该方法不仅可以提高决策的科学性和合理性，还为其他类似问题的解决提供了一种新的思路和方法。

Abstract: At present, the state vigorously promotes infrastructure construction, and the problem of karst caves has gradually become a major problem in engineering construction. The existence of karst caves will not only affect the safety of the project, but also increase the cost and difficulty of the project. Therefore, it is of great significance to reasonably determine the tunnel cave crossing scheme. The basic data of the karst cave were obtained by using the 3D laser scanner, and four measures for the treatment of the karst in the tunnel were proposed because the karst cave was located under the tunnel. Through the simulation of Midas GTS NX 3D numerical analysis software, combined with geological survey and construction design, it is shown that the four treatment schemes have their own advantages and disadvantages, and the karst cave treatment should comprehensively consider the influence of multiple factors and reasonably select the optimal treatment scheme. The fuzzy comprehensive evaluation method of AHP was used to comprehensively and objectively compare and evaluate the karst cave treatment scheme. Through this method, the influence of various factors can be fully considered, and based on the above research methods, the optimal karst cave disposal scheme is C20 concrete backfill. This method can not only improve the scientificity and rationality of decision-making, but also provide a new way of thinking and method for solving other similar problems.