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榆树湾煤矿20102工作面下穿包西铁路增建二线,具有开采深度深,开采厚度大,开采速度较快,工作面长等特点,导致地表大面积沉降变形,严重威胁包西增建二线的安全。结合具体观测数据分析榆树湾煤矿大面积采空区的稳定性评价及变形特征,结论为:对急剧沉降已完成地段,可先期进行路基施工,同时路基两侧加设护道;对急剧沉降未完成地段,陆续加强监测。
The 2010-2 working face of Yushuwan Coal Mine underlies the Baotou-West Railway to build a second line, which has the characteristics of deep mining, large mining thickness, fast exploitation and long working face, leading to the settlement and deformation of the large area of the earth’s surface and threatening the construction of the second line Safety. Combined with the specific observation data, the stability evaluation and deformation characteristics of large area goaf in Yushuwan coal mine are analyzed. The conclusion is that the construction of subgrade can be carried out in advance for the completed subsidence of the rapid subsidence and the protection of the roadbed on both sides of the subgrade; Complete lots, one after another to strengthen monitoring.