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永煤集团正龙煤业城郊煤矿井下大巷消防洒水管路采用φ159mm无缝钢管,总长度约12000m。管路采用φ16 mm圆钢制作的U形卡,悬吊在距巷道底板约2.25 m高、水平预埋的钢梁(10号槽钢)下面。钢梁一端埋设在巷帮内,一端通过花篮螺栓悬吊在巷顶埋设的悬吊钩上。由于洒水管路水源取自大巷底板地下水,地下水腐蚀性较强,经过几年的使用,造成整个大巷洒水管路腐蚀严重,多处产生漏水现象,需要将整个井下大巷旧洒水管路拆除,更换成同直径的矿用聚乙烯复合防腐管。
Yong Coal Group Zhenglong coal mine suburban coal mine fire sprinkler pipes with φ159mm seamless steel pipe, the total length of about 12000m. U-shaped pipe made of φ16 mm round steel pipe suspended from the tunnel floor about 2.25 m high, horizontal embedded steel beams (No. 10 channel) below. One end of the steel beam is buried in the laneway, one end is hung on the hanging hook buried in the roadway by a basket-shaped bolt. As the water from the sprinkler pipe is taken from the ground floor of the main road, the groundwater is more corrosive. After several years of use, the entire sprinkler pipe corrodes seriously and leaks in many places. Therefore, the old sprinkler pipe Demolition, replacement into the same diameter mine polyethylene composite anti-corrosion pipe.