云南冶金2025，Vol.54Issue(6)：30-38,9.
地表排土场与井下采空区相互影响稳定性研究
Research on the Stability of Mutual Influence Between Surface Dump Site and Underground Goaf
汪林峰 1丁安松 2廖文景 2曾凡超 2白春晖1
作者信息
- 1. 湖南瑶岗仙矿业有限责任公司,湖南郴州 424209
- 2. 长沙矿山研究院有限责任公司,湖南长沙 410012||金属矿山安全技术国家重点实验室,湖南长沙 410012
- 折叠
摘要
Abstract
To investigate the mutual influence on stability between surface dump sites and underground goafs,this study,set against the backdrop of a newly constructed surface dump site atop an underground goaf in a certain mine,employs theoretical analysis and numerical simulation to analyze the stability of the surface dump site and the overlying rock mass of the goaf.The results indicate that the combined depth of the caving zone and fracture zone heights(33.3～62.4 m)in the overlying rock mass of the goaf,along with the influence depth(155 m)of the dump site load,exceeds the buried depth of the overlying rock mass above the goaf.The load from the dump site causes secondary damage to the overlying rock mass of the goaf.Under the action of the dump site load,the displacement increment in the vertical direction of the overlying rock mass above the goaf ranges from 0.6 to 2.5 cm,while the displacement increment in the horizontal direction ranges from-2.16 to-1.27 cm.The secondary damage to the overlying rock mass caused by the dump site load results in the plastic zone extending to the surface,subsequently leading to instability of the dump site.Under specific topographical and geomorphological conditions,the dump site can prevent landslide disasters triggered by the instability of the overlying rock mass above the goaf.关键词
排土场/上覆岩体/附加应力法/数值模拟/采空区稳定性Key words
waste dump/overlying rock mass/additional stress method/numerical modeling/stability of goaf分类
矿业与冶金引用本文复制引用
汪林峰,丁安松,廖文景,曾凡超,白春晖..地表排土场与井下采空区相互影响稳定性研究[J].云南冶金,2025,54(6):30-38,9.
