矿产保护与利用2024，Vol.44Issue(4)：85-92,8.DOI:10.13779/j.cnki.issn1001-0076.2024.04.010
地采扰动下露天坑地表岩移特征及废石充填方案研究
Surface Rock Displacement Characteristics and Waste Rock Backfill Scheme of Open Pit under the Underground Mining Disturbance
摘要
Abstract
The non-pillar sublevel caving method is often used in the black metal mines with open-pit to underground,which can easily cause instability of open-pit slopes and threaten the safety of surrounding buildings in the mining area.Taking the Lijiahe Iron Mine with steep surface slopes and strong terrain cutting as the research object,a detailed numerical model was constructed based on the surface aerial point cloud data and the production plans.The numerical simulation was used to study the surface rock movement characteristics of open-pit pits under the action of continuous underground mining disturbance.In combination with the factors such as terrain,vegetation,crops,and roads,a feasible surface waste rock filling scheme was compared and selected.The results showed that the No.1 mine pit showed local sporadic damage,while the No.2 mine pit was mainly damaged in the north-eastern area under the deep mining and the terrain and distribution of the ore body.The overall surface subsidence stability of the No.1 mine pit was better than that of the No.2 mine pit.Finally,a surface waste rock filling scheme was selected that moves from the sidewall to the centre and then northwards.关键词
无底柱分段崩落法/露天转地下/地表岩移/数值模拟/废石充填Key words
non-pillar sublevel caving method/open pit to underground/surface rock displacement/numerical simulation/waste rock backfill分类
矿业与冶金引用本文复制引用
韩岩松,张晶,周宗红,刘银..地采扰动下露天坑地表岩移特征及废石充填方案研究[J].矿产保护与利用,2024,44(4):85-92,8.基金项目
国家自然科学基金重点项目(51864023,52264019) （51864023,52264019）
云南省重大科技专项(202202AG050014) （202202AG050014）
云南省基础研究计划项目青年项目(202401AU070175) （202401AU070175）
