沉陷区内尾矿库变形预测

Deformation prediction of trailings in subsidence area

为了判别在河北省范各庄煤矿沉陷区内建立尾矿库安全问题,对尾矿库变形进行预测研究是非常重要的。通过应用FALC3D对其进行数值模拟,将建立尾矿库前的沉陷变形及未来历年开采引起的预测变形与前期评估报告和现场勘探资料,表明用煤矸石作筑坝材料如不作加筋处理会产生较大位移,但对库区变形不会产生大的影响,符合工程极限变形要求,

In order to make sure wheter it＇s safe to build embankment in subsidence area at Fan gezhuang Coal Mine in Hebei Province, it＇s critical to study the future deformation of the embankment. FALC^3D is used to simulate it, the subsidence strain before embankment construction and the forecast strain every year are compared with the prophase evaluation the report and locale data, It is shown that it＇s needed to reinforce coal waste rock or it will reduce a large displacement, but has little influence on embankment area and it satisfies project limited strain demand.