充填体力学性质对地层变形规律的影响研究

Influences Research of Backfill Mechanical Properties on Stratum Deformation Law

为研究充填体力学性质对地层变形规律的影响,基于2种不同力学性质的充填体,采用FLAC对地层变形进行数值模拟,实际选择充填体II进行地面变形监测。研究结果表明:充填体力学性质越强,关键层及地面下沉量越小,地面局部倾斜及曲率越小,地层变形程度越小;采用充填体II的地面最大下沉值、地面最大局部倾斜、地面最大曲率的监测值与数值模拟结果基本吻合,地面为稳定场地,地面建筑物安全。

In order to study influences of backfill mechanical properties on stratum deformation law, based on two kinds of backfill which have different mechanical properties, the stratum deformation was simulated by using FLAC, actually,backfill II was selected,and the ground deformation was monitored. The research results show： the stronger the backfill mechanical properties ,the smaller the critical layer and ground subsidence,the smaller the ground local slope and curvature,the smaller the stratum deformation degree, the monitoring values of maximum subsidence, local slope, and curvature of ground under backfill II are consistent with numerical simulation results,ground is stable site and buildings on the ground are safe.