露天转地下开采模型试验系统及其应用

Application of Model Experimental System for Open Pit to Underground Mining

为研究露天转地下开采条件下,高陡边坡与地下采场围岩的变形和应力变化规律,研制出一种高陡边坡露天转地下开采模型试验系统.该系统由开采模拟方法和开采模拟系统组成,其中,模拟试验方法包含完备的模型制作和开采模拟技术,开采模拟系统包含模型框架、模型制作设备和模型监测系统.以大冶铁矿狮子山矿段为工程背景,运用该系统进行露天转地下开采模型试验研究,得到开采过程中矿区边坡、地下采场围岩的变形规律和破坏特征.研究结果表明:该系统具有良好的适应性,可满足露天转地下开采及其他大型地下工程物理模型试验研究的需要.

In order to study the stress and deformation features of high steep slopes and surrounding rocks under the open pit to underground mining,a large scale geomechanical model experimental system was developed.This system consists of mining model method and mining model system,the mining model method consists of modeling and mining simulation technology,the mining model system consists of model frameworks,block production equipments and monitoring devices.Taking a typical section of Shizishan ore block of Daye iron mine as engineering background,a large scale model experiment was carried out by this system,the stress and deformation features of high steep slope and surrounding rock under the open pit to underground were obtained.Results show this system can be preferably used for open pit to underground mining and other large scale underground engineering model experiments.