采动影响下饱和松散土体运移演化过程及力学参数研究

Research on Migration Evolution Process and Mechanical Parameters of Saturated Loose Soil Under the Influence of Mining

针对常村煤矿桥梁及铁路下采煤引起地表大幅度沉陷的问题,利用土力学理论分析了采动区土体移动变形特征,通过对该矿局部地区土体力学试验结果进行归一化处理,分析了土体力学参数变化规律,得到了土体干密度扰动变化率与土体力学参数扰动变化率关系、土体力学参数扰动变化率与扰动率关系曲线。

According to the problem of larger surface subsidence caused by mining under bridge and railway in Zhaogu No. 2 Coal Mine, used the mechanical theory of soil, we analyzed the movement and deformation characteristics of soil in the mining area. Through the normalized processing of the soil mechanical test results, we analyzed the ehanging laws of soil mechanics parameters and got the relation curves between the rate of soil dry density and soil meehanies parameters disturbance rate, and the relation curves between the rate of soil meehanics parameters disturbance change rate and disturbance rate.