摘要
在现场野外地质调查、采空区空间分布状态实测、室内岩体力学试验及力学参数工程化处理的基础上,利用RHINO-FLAC^3D耦合技术建立了采空区的三维数值计算模型,对西华山钨矿的空区稳定性进行了分析,针对采空区有可能再次发生地面塌陷的不稳定状态,优选出了"在垂直方向自100~101,108~110勘探线进行充填形成2个连续垂直隔墙,然后C15砼充填270~290中段及378中段至地表的采空区形成水平隔板,并辅以W7气泡混凝土封堵空区两端"的空区治理方案。空区经该方案治理后,其稳定性达到了预期效果。
Based on the field geological survey,measurement of spatial distribution of goaf,laboratory rock mechanics tests,as well as engineering treatment of mechanical parameters,a three-dimensional numerical calculation model of goaf was established by RHINO-FLAC3D coupling technology,and the stability of goaf in Xihuashan Tungsten Mine was analyzed.Aimed at the unstable state that the ground collapse may occur again,the treatment scheme was proposed.In this scheme,the C15 concrete was used to fill the goaf in 100~101 exploration line and 108~110 exploration line in the vertical direction,so as to form 2 continuous vertical partition walls.Then the C15 concrete was used to fill the goaf in 270~290 level and 378 level to surface for forming horizontal partitions.Finally the W7 bubble concrete was used to seal the two ends of goaf.The stability of the goaf achieved the expected results after goaf treatment.
作者
陈光飞
罗昌繁
钟连祥
陈飞
CHEN Guangfei;LUO Changfan;ZHONG Lianxiang;CHEN Fei(Jiangxi Gannan Institute of Geological Engineering,Ganzhou,Jiangxi 341000,China;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;Jiangxi Key Laboratory of Mining Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第9期30-35,共6页
Mining Research and Development
基金
江西省教育厅科学技术研究项目(GJJ16064)
赣州市专利技术实施转化项目(2017019128)
关键词
采空区
数值模拟
稳定性分析
充填
地面塌陷
Goaf
Numerical simulation
Stability analysis
Filling
Ground collapse
