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马路坪斜井工程包括940～860米中段的井筒,地下及地表车场。井巷掘进宽度3.2～9米,其中井口段为3.8米。 井筒穿过第四纪堆积、坡积及紫红色泥质页岩地层。井口位于马路坪古岩堆侧面,工程地质条件复杂。临近斜井口并与斜井同时施工的废石平峒发生了底鼓和连续大冒顶。所用钢筋砼封底的永久支护大部被压裂。自1978年至1983年先后施工两条平峒,均未成功。经过分析认为,造成支护破坏的原因
The Malpin Ping Inclined Shaft Project includes the wellbore, underground and surface yard in the middle section of 940 ~ 860 meters. Well tunnel driving width of 3.2 to 9 meters, of which the wellhead section is 3.8 meters. Wellbore through the Quaternary accumulation, slope plot and purplish shale formation. The wellhead is located on the side of the ancient rock pile of Maluping with complicated engineering geological conditions. Near the inclined wellhead and inclined shaft at the same time the construction of waste rock flat kick drum and continuous large roof fall. Most of the used reinforced concrete back cover of the permanent support fracturing. Since 1978 to 1983 has constructed two flat 峒, were unsuccessful. After analysis that causes damage to the support of the reasons