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张集矿红旗渠铁路桥2001年10竣工运营,该桥总长10.9m。原设计由4个箱形框架组成,中间两个的宽分别为5m和4m,两侧箱体分别为2m,箱形框架之间设20mm沉降缝,框架桥总高5.36m。由于受张集矿1211(3)、1212(3)、1213(3)工作面开采影响,采面覆岩发生变形,地表产生沉降,桥体所处位置的地表已经下沉了3.6m。为保证列
Zhangji mine Hongqi canal railway bridge completed in 2001 10 operations, the bridge total length of 10.9m. The original design consists of four box-shaped frame, the width of the middle two were 5m and 4m, the two sides of the box were 2m, 20mm settlement between the box-shaped frame seams, frame bridge total height of 5.36m. Due to the mining of the 1211 (3), 1212 (3) and 1213 (3) working face of Zhangji Mine, the overburden rock of the mining face is deformed and the ground surface is subsided. The surface of the bridge where the bridge is located has sunk by 3.6m. To ensure that the column