基于FLAC3D的北京高丽营地裂缝模拟

北京高丽营地裂缝造成了房屋墙体和道路破坏，严重影响城市规划建设。已有研究成果表明高丽营地裂缝是复合型地裂缝，主要成因是断裂蠕滑变形与地下水下降引起的地面差异沉降共同作用的结果。据此，采用FLAC3D软件对高丽营地裂缝进行了研究，模拟了8种状况下地裂缝带的发展趋势，最终确定了地裂缝安全避让带宽度为90m，与地表调查确定的100m避让带宽度相一致。研究结果说明在地裂缝模拟中应用FLAC3D技术是可行的，对今后北京地区地裂缝预测工作具有指导意义。 Gaoliying ground fissure destroyed the building walls and roads and had serious effects on urban planning and construction. Previous research results showed that Gaoliying ground fissure is a composite one and caused by the combination results of fault creep deformation and ground differential subsidence induced by decline of groundwater level. In this study, FLAC3D software was used to simulate the developing trend of Gaoliying ground fissure under eight different conditions. The results indicated that the forbidden bandwidth of ground fissure is 90 m, which agrees with the surface investigation results of 100 m. The research results suggested that application of FLAC3D technology in the numerical simulation of ground fissure is feasible, and it can also provide guidance for the prediction of ground fissure in Beijing.