论文部分内容阅读
西峡县石门水利水电枢纽工程,坝基地质状况虽在《可研》和《初设》阶段提供过勘察报告,但从实际开挖后的地质状况看要优于初设,因此在施工中,进行了设计修改,抬高了建基面,节省了投资。1 大坝河床建基面与坝基岩体大坝河床部位建基面高程,初设定为238.5m,施工图设计变更为240m高程。实际开挖后证实河床建基面高程平均为241.7m,下游局部软弱带超挖至高程239m;河床右部建基面
The Xijia County Shimen Water Conservancy and Hydropower Project, although the geological conditions of the dam foundation provide survey reports in the “feasibility study” and “initial design” stages, it is better than initial design after the actual excavation. Therefore, during construction, A design modification was carried out to raise the foundations and save investment. 1 The foundation surface of the dam foundation and the foundation surface of the dam bed of the dam foundation rock mass are initially set at 238.5m and the construction drawing design is changed to an elevation of 240m. After excavation, it was confirmed that the average bed surface elevation of the riverbed was 241.7m, and the local weakness zone of the lower reaches was overshooted to an elevation of 239m. On the right of the riverbed,