Title：Detection and engineering practice of water rich property of main roadway floor
作者：郑民刚,田保安,武志高
关键词：大巷底板,陷落柱,电测深法,富水性
论文类型：期刊论文
论文来源：华北自然资源 2019
摘要：采用高分辨率三极电测深技术对西峪煤矿主巷道软弱带底板突水进行了预测，找出了底板软弱带富水性及分布特征。认为正常岩层发育地段岩层抗拉强度大于临界抗拉强度，突水风险小。新暴露的陷落柱虽然密度较高，但采用电法检测裂缝发育，抗拉强度小，突水风险大。采用水泥、水玻璃和Br增强防水剂对软弱带陷落柱底板进行了单液注浆加固。采用地面水情监测。电法复测验证表明，底板加固后，陷落柱断裂程度明显降低，柱体及边缘出水量减弱，突水风险降低。
Abstract：In this paper, the high-resolution three pole electrical sounding technique is used to predict the water inrush from the floor of the weak zone of the main roadway in Xiyu coal mine, and the water rich and distribution characteristics of the weak zone of the floor are found out. It is considered that the tensile strength of the rock stratum in the normal rock stratum development section is greater than the critical tensile strength, and the risk of water inrush is small. Although the newly exposed collapse column has a high density, the electric method is used to detect the fracture development, the tensile strength is small, and the risk of water inrush is large. Cement, water glass and Br reinforced waterproof agent were used to reinforce the floor of the weak zone collapse column with single liquid grouting method. The water condition monitoring of the floor was applied. The re detection and verification of the electrical method showed that after the floor was strengthened, the fracture degree of the collapse column was obviously reduced, the water yield of the column and its edge was weakened, and the risk of water inrush was reduced.
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