Earthjustice, a nonprofit environmental law firm, is suing to block the lease of state-owned land in Otter Creek, Mont., to Arch Coal for mining to serve demand in Asia and elsewhere.
According to the special structure of precast block of inverted arch for TBM construction tunnel, the dynamic construction state is modeled by FEM with surrounding rock - structure calculating model.
针对TBM施工隧道仰拱预制块的特殊结构，采用围岩-结构模式，进行了模拟施工动态的受力影响计算分析。
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The result of forecasting is consistent with the fact one. The applicability of block theory in overbreak of doubled arch tunnel is tested.