环境敏感区水利工程开挖料资源化利用与筑坝技术研究OA

Aiming at the key technical problems such as the strict prohibition of spoil disposal sites and the shortage of dam construction materials in water conservancy projects in environmentally sensitive areas,the modification technology and dam construction method of unfavorable excavated materials are systematically studied based on the Muzhutian Reservoir Project.Through laboratory tests and on-site large-scale direct shear tests,the engineering characteristics of soft rock materials and colluvium mixed soil are clarified.The material source modification technology of"layered mixing+mechanical crushin"is proposed,which modified the poorly graded mixed soil into qualified material sources meeting the filling requirements of high dams.A performance-based zoning design method for the dam body is established,the modified materials are applied to different functional zones according to their characteristics,and a whole-process quality control system is constructed.The results show that the project has realized 100%resource utilization of excavated materials,reduced 720,000 m3 of waste slag,reduced carbon dioxide emissions by 12,000 tons,and the stability safety factor of the dam slope has increased by more than 15%compared with the standard value.This technical system has formed a complete solution for"zero waste slag"green dam construction in environmentally sensitive areas,which has important demonstration value for promoting the green construction of water conservancy projects.