As the diversion tunnel of Ertan Hydroelectric plant has big dimensions and high initial ground stress, the new conception and method are used in design.
二滩水电站导流隧洞规模大、初始地应力高，设计中采用了现代地下结构设计理论和方法。
As the diversion tunnel of Ertan Hydroelectric plant has big dimensions and high initial ground stress, the new conception and method are used in design.
二滩水电站导流隧洞规模大、初始地应力高，设计中采用了现代地下结构设计理论和方法。
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