二衬支护时机
second liner timbering opportunity
MC桩组合支护结构
MC composite support structure
U型钢-锚网支护
U-steel bolting with wire mesh
U型棚支护
Support of steel shed in form of U-shape Injecting
边坡喷锚支护
shotcrete and rock bolt support in the slope
边坡支护
slope support
Slope protection
slope supporting
slope shoring
slope retaining
side slop supporting
Side slope support
side support
protective slope
side ascent protection
Support engineering of soil border-slope
不规则梯形支护
irregular trapezoid support