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榆神高速公路全长约88 km,路经5个煤矿采空区。采空区均由品字形房柱式开采而成,埋深介于10至120 m之间,房柱宽度和间距最小为6 m,最大15 m。采用FLAC3D对其中埋深较小的前阳湾煤矿采空区进行模拟,模型开采埋深为地表下17～20 m,研究了品字形房柱式采空区地表移动基本规律、地表动态变形规律以及煤柱的受力情况等。关于房柱式采空区地表移动规律等的研究国内还未见报道,因此本文对以后类似工程具有一定的指导和借鉴意义。
The total length of Yushen Expressway is about 88 km, passing through 5 coal mines. The goafs are all mined by quasi-shaped columns with a depth of 10 to 120 m. The minimum width and spacing of the columns are 6 m and the maximum is 15 m. FLAC3D was used to simulate the gob area of Qianyang Bay coal mine with a small depth. The buried depth of the model was 17-20 m below ground surface. The basic law of surface movement and the law of surface dynamic deformation of the gable- As well as the pillars of the force situation. There is no report about the law of surface movement in the house-mined goaf, and so there is some guidance and reference significance for similar projects in the future.