timbering

特殊用法advance timbering1.(导坑)前沿支撑antidetonation timbering1.抗震加强支架cantilever timbering1.前探支架close timbering1.密闭支撑cog timbering1.垛式支架face timbering1.工作面支护false timbering1.临时支架gallery timbering1.导洞支撑herringbone timbering1.人字形支架open timbering1.间隔排列木支架法pentagonaltimbering1.五边形支撑pintimbering1.锚杆支护法polygontimbering1.多边形支撑prop-crib timbering1.隔离井框支架racked timbering1.斜木撑rafter timbering1.(导坑)支撑segmental timbering1.弓形砌块支撑solid crib timbering1.密集井框支架water-tight shaft timbering1.(导坑)防水支撑yield timbering1.让压支桩, 可缩支柱
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