锦屏水电站深埋岩体超高压变形试验研究

Experimental Study on Super High Pressure Deformation of Deep Buried Rock Mass in Jinping Hydropower Station

锦屏二级水电站的四条巨大的输水隧洞，洞长17～19km，开挖洞径12～13m，上覆岩体一般埋深1500～2000m，最大埋深约为2525m，为超深埋长隧洞大型地下水电工程。高应力、强烈的岩爆和变形，给设计、施工及运行安全带来很大的困难，必须采用超高压的岩体变形试验方法，提供岩体在高应力条件下的变形模量和变形特性，满足该工程的设计要求，因此该项试验研究成果对工程设计和施工将有重要的实用意义。

there are four items huge transport water tunnel in jinping secondary level hydro power station, the length of tunnel is 17-19km,the diameter of tunnel is 12-13m,cover rock mass commonly are buried depth 1500-2000m, most depth 2525m,it is super deep buried long tunnel largely. Ground hydro power engineering, high stress consuming rock burst and deformation bring lots of difficult for design ,construction and run safety. Must adopt super high pressure rock mass deformation test method, provide rock deformation model and characteristic quality under the condition of high stress, meet the demand of engineering design, the test research fruit has important practicality significance for engineering design and construction.