However, evaluation methods of wall rock stability in underground cavern groups with high side-wall, large span and intersect caverns are required for actual projects such as Nuo Zhadu.
但在实际的工程中，特别是对于糯扎渡这种边墙高、跨度大、洞室相互交错的地下洞室群的围岩稳定性问题，还缺少系统的评价方法。
Finally, some useful conclusions for selecting the site of a large-span cavern and for the design and construction of support are given.
最后，给出了一些对大跨度峒库位置的选择、支护设计和施工方法等有意义的结论。
Finally, some useful conclusions for selecting the site of a large-span cavern and for the design and construction of support are given.
最后，给出了一些对大跨度峒库位置的选择、支护设计和施工方法等有意义的结论。
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