학술논문
某矿山地下开采对地表公路的影响分析 / Analysis of the impact of underground mining on surface highway of a mine
Document Type
Academic Journal
Author
Source
黄金 / Gold. 45(2):24-28
Subject
Language
Chinese
ISSN
1001-1277
Abstract
某矿山地下开采矿体在地表公路的保安矿柱范围内,为了确保公路的稳定性,采用Flac3D软件的数值分析方式进行了开采影响分析,同时论证了采矿爆破振动对公路的影响.结果表明:-300 m中段矿体开采后,地表公路最大沉降为1.2 mm,地表x向倾斜值最大为0.185 mm/m,y向倾斜值最大为0.13 mm/m;地表x向曲率值最大为0.011 × 10-3m-1,y向曲率值最大为0.012 × 10-3m-1;地表x向水平变形最大值为0.15 mm/m,y向水平变形最大值为0.12 mm/m,均满足相关规范要求.采矿爆破时的地表质点振速小于规范规定的安全允许振速,采场爆破振动对地表影响很小.研究结果对该矿山深部开采提供了技术支撑.
An underground ore body of a mine is within the security pillar range of a surface highway.In order to ensure the stability of the highway,Flac3D numerical analysis method was used to conduct a mining impact analysis,and the impact of mining blasting on the highway was demonstrated.The results show that the maximum subsidence of surface highway is 1.2 mm,the maximum slope value in the x direction of the surface is 0.185 mm/m,and the maxi-mum slope value in the y direction is 0.13 mm/m after mining the ore body at-300 m level;the maximum curvature value in the x direction of the surface is 0.011 × 10-3m-1,maximum curvature value in y direction is 0.012 × 10-3m-1;the maximum horizontal deformation of the surface in the x direction is 0.15 mm/m,and the maximum horizontal deformation in the y direction is 0.12 mm/m,both of which meet the requirements of relevant specifications.The surface particle vibration velocity during mining blasting is less than the safety allowable vibration velocity specified in the specification,so it is con-sidered that stope blasting has little impact on the surface.The research results provide technical support for the deep min-ing of the mine.
An underground ore body of a mine is within the security pillar range of a surface highway.In order to ensure the stability of the highway,Flac3D numerical analysis method was used to conduct a mining impact analysis,and the impact of mining blasting on the highway was demonstrated.The results show that the maximum subsidence of surface highway is 1.2 mm,the maximum slope value in the x direction of the surface is 0.185 mm/m,and the maxi-mum slope value in the y direction is 0.13 mm/m after mining the ore body at-300 m level;the maximum curvature value in the x direction of the surface is 0.011 × 10-3m-1,maximum curvature value in y direction is 0.012 × 10-3m-1;the maximum horizontal deformation of the surface in the x direction is 0.15 mm/m,and the maximum horizontal deformation in the y direction is 0.12 mm/m,both of which meet the requirements of relevant specifications.The surface particle vibration velocity during mining blasting is less than the safety allowable vibration velocity specified in the specification,so it is con-sidered that stope blasting has little impact on the surface.The research results provide technical support for the deep min-ing of the mine.