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机构地区:[1]徐州矿务集团有限公司张集煤矿
出 处:《矿山压力与顶板管理》1999年第1期23-26,共4页Ground Pressure and Strata Control
摘 要:介绍水淹井巷围岩很大一部分呈现软岩崩解现象,强度大大降低,排水后,围岩、支架、背帮护顶材料又风化,支护强度进一步减小,锚喷巷道片帮、冒顶、锚杆折断,巷道支护失效。据此采取一系列针对性措施,实现受淹巷道的有效快速修复。Abstract Collapse of soft rocks, rock strength reduction feature to a great extent the surrounding rock of a flooded roadway. Weathering of support, surrounding rock and lining materials, further reduction of supporting intensity, sapling of shotcrete, roof fall, rock bolt rupture along with road support failure occur subsequently after drainage. In view of these, a series of corresponding actions were taken so that an effective, rapid rehabilitation of the flooded roadway was realized.
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