摘要
采用2 m×2 m平面应变模型支架,在实验室内依据相似材料配比实验结果铺设物理模型研究露天矿边坡变形规律特点。实验中以矿山边坡地质资料为依据进行开挖,利用全站仪与土压力盒分别测量测点的位移与岩层间的应力,并对边坡体形态以及开挖时步进行归纳总结。研究表明:随着开采时步的增加,测点的水平位移与竖直位移都在不断增大,但边坡内岩体位移无明显的突变现象;水平、竖直位移在坡面处达到最大,水平方向越远离坡面位移量越小。
Using 2 m×2 m bracket plane strain model, the physical model of open pit slope was set up in the laboratory, according to the ratio of similar materials experiment to study the characteristics of deformation of excavation slopes. The experiment based on geological data mining slope excavation, using total station and measured soil pressure box measuring displacements of the points and stress between the layers, and summarizing the slope body form and excavation time step. Research shows： with the increase of mining time step, the level and vertical displacements of the points are increasing, but the displacement of slope rock mass has no obvious mutation phenomenon ;the horizontal and vertical displacements reached the maximum in the slope, farther from the slope, smaller the horizontal displacement is.
出处
《煤炭技术》
CAS
北大核心
2017年第4期22-24,共3页
Coal Technology
基金
国家自然科学基金项目(51464036
51564038)
内蒙古自然科学基金(2015MS0548)
关键词
露天矿
物理相似模拟
边坡变形规律
open pit mine
physical analog simulation
slope deformation law
