土溪口水库大坝工程地质勘察实例分析
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摘要
土溪口水库坝址区岩溶地貌发育,地质条件复杂,断层裂隙发育,采用平硐、钻孔勘探和钻孔水文试验等多种勘察手段,对坝址区上、下坝线进行了详细的工程地质勘察。查明上坝线存在坝基渗漏、绕坝渗漏和地下岩溶洞穴等地质缺陷隐患,并对上坝线坝基持力层的选择和坝基抗滑稳定进行评价。通过与下坝线工程地质条件进行比较,选择上坝线作为推荐坝线。
In the dam site area of Tuxikou reservoir,karst geomorphology is well developed,geological conditions are complex,and fault fissures are well developed. By means of adit,borehole exploration and borehole hydrological test,a detailed engineering geological survey of the upper and lower dam lines in the dam site area is carried out. The hidden dangers of dam foundation seepage,dam around seepage and underground karst caves are identified,and the selection of bearing stratum of dam foundation and anti-sliding stability of dam foundation are evaluated. By comparing with the engineering geological conditions of the lower dam line,the upper dam line is selected as the recommended dam line.
In the dam site area of Tuxikou reservoir,karst geomorphology is well developed,geological conditions are complex,and fault fissures are well developed. By means of adit,borehole exploration and borehole hydrological test,a detailed engineering geological survey of the upper and lower dam lines in the dam site area is carried out. The hidden dangers of dam foundation seepage,dam around seepage and underground karst caves are identified,and the selection of bearing stratum of dam foundation and anti-sliding stability of dam foundation are evaluated. By comparing with the engineering geological conditions of the lower dam line,the upper dam line is selected as the recommended dam line.
引文
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