文献类型：期刊文献

中文题名：地铁隧道施工引起地层变形的模型试验研究

英文题名：Model Test Study of Stratum Deformation Caused by Subway Tunnel Construction

作者：王天佐[1,2,3];陈雷[1,2];薛飞[1,2,3];王林翔[1,2];SANA Moctar[1,2]

机构：[1]绍兴文理学院土木工程学院,浙江绍兴312000;[2]浙江省岩石力学与地质灾害重点实验室,浙江绍兴312000;[3]浙江省山体地质灾害防治协同创新中心,浙江绍兴312000

年份：2022

卷号：42

期号：2

起止页码：16

中文期刊名：绍兴文理学院学报

外文期刊名：Journal of Shaoxing University

收录：国家哲学社会科学学术期刊数据库

基金：浙江省基础公益研究计划项目“高应力强卸荷作用下不同粒径花岗岩损伤破裂机制研究”(LGJ22D020001);浙江省基础公益研究计划项目“循环荷载作用下锚固界面的疲劳力学特性研究”(LQ20E080006).

语种：中文

中文关键词：地层损失;物理模型试验;排液法;沉降槽

外文关键词：formation loss;physical model test;drainage method;settlement trough

中文摘要：为探究地层损失引起的地层变形在地层内部的传递规律,基于排液法模拟隧道施工引起的直接地层损失,进行不同地层损失率下砂土地层变形的物理模型试验研究.结果表明:在不同地层损失率下,地表及地层内部的沉降曲线均成高斯正态分布,地表沉降影响宽度约为5倍硐径,地表沉降槽宽度系数在13.5~15范围之内,约为2倍硐径;地表最大沉降随着地层损失率的增加而增大,大致呈二次函数关系;地层内部中心最大沉降与深度呈线性关系,最大沉降量随着深度的增加而增大,而地层沉降槽宽度随着深度的增加呈现减少的趋势,地层沉降槽宽度系数i与距离隧道横轴线的深度h呈线性关系;不同深度处的沉降槽体积自下而上有增大的趋势,沉降槽体积传递率的范围为60%~90%.

外文摘要：In order to explore the transfer law of formation deformation caused by formation loss in the formation,a physical model test of sandy soil layer deformation under different formation loss rates was carried out based on the drainage method to simulate the direct formation loss caused by tunneling.The results show that under varied formation loss rates,the settlement curves of the surface and the inside of the formation are of Gaussian normal distribution,with the influence width of the surface settlement being about 5 times of the tunnel diameter,the width coefficient of the surface settlement trough being within the range of 13.5~15,approximatelytwice of the tunnel diameter.The maximum surface subsidence increases with the increase of the formation loss rate,which presents a quadratic function.There is a linear relationship between the maximum settlement of the inner center and the depth.The maximum settlement increases with the increase of the depth,while the width of the settlement trough decreases with the increase of the depth,and the width coefficient of the stratum settlement trough has a linear relationship with the depth from the transverse axis of the tunnel.The settling trough volume at different depths tends to increase from bottom to top,with the volume transfer rate of the settling tank ranging from 60%to 90%.