摘要
对邻近高陡边坡的矿产资源进行回采,需要保证高陡边坡的稳定性。为研究回采时的爆破振动规律及边坡稳定性,通过爆破振动测试仪对矿山边坡建筑物的主振频率及质点振动速度进行采集,并对采集数据进行回归分析,得到该边坡爆破振动衰减规律。同时使用Geo-studio软件对高陡边坡下矿体开采对边坡稳定性的影响进行数值模拟,得到不同开采阶段边坡的稳定性。研究结果表明:爆破振动质点振速在水平径向方向振速最大,所有振速均在安全范围内,对边坡上的建筑设施无破坏性影响。数值模拟结果表明矿体开采过程中边坡均为安全Ⅰ级,均处在稳定状态,可使用现有采矿工艺对高陡边坡下矿体进行开采。
To mine mineral resources adjacent to high and steep slope,it is necessary to ensure the stability of the high and steep slope.In order to study the blasting vibration law and slope stability during mining,the main vibration frequency and particle vibration velocity of the mine slope building were collected by the blasting vibration tester,and the collected data was regressed to obtain the vibration attenuation law of the slope blasting.At the same time,the influence of ore body mining on the slope under the high and steep slope was numerically simulated,and the stability of the slope in different mining stages was obtained.The research results show that the vibration velocity of the blasting vibration particle is the largest in the horizontal radial direction,all the vibration velocities are within the safe range,and have no destructive impact on the building facilities on the slope.The numerical simulation results show that the slope in the mining process of the ore body is in a safe level I which is in a stable state,and the existing mining technology can be used for mining.
作者
吴礼军
徐文彬
WU Li-jun;XU Wen-bin(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China)
出处
《工程爆破》
CSCD
北大核心
2022年第4期113-119,共7页
Engineering Blasting
