摘要
采区接续转向方式不仅影响露天煤矿生产稳定及剥采比均衡,而且是影响露天煤矿生产组织管理及生产成本的重要因素。国家能源集团陕西神延煤炭有限责任公司西湾露天煤矿(以下简称“西湾露天煤矿”)面临着首采区开采到界及产能核增的生产影响,为了解决由此产生的生产接续及采区转向问题,基于西湾露天煤矿开采条件与开发现状,在西湾露天煤矿优化原采区划分的基础上提出采区划分及重新拉沟、扇形转向、L型推进3种转向方案,对比分析了各种采区转向方案生产能力、均衡剥采比、排土规划等方面的影响,并综合优选最佳采区转向方案。研究结果表明,L型推进方案均衡期数最少,重新拉沟方案剥采比极小值最小,扇形转向方案平均剥采比最小;在农田征地且方家畔尾坑可利用排土时,推荐采用重新拉沟方案,在首采区农田征地问题不能解决时,建议采取L型推进方案。
The continuation and turning mode of working areas of open-pit coal mine affect the stability of production and the balance of stripping ratio,which is an important factor affecting the organization and management of mine production and production costs.The Xiwan Open-Pit Coal Mine of China Energy Shaanxi Shenyan Coal Co.,Ltd.(hereinafter referred to as"Xiwan Open-pit Coal Mine")is facing the production impact of first working area reaching the boundary and production capacity increase.In order to solve the problems of continuous production and working area turning,according to the mining conditions and development status of Xiwan Open-pit Coal Mine,working area division and three turning schemes of and re-trenching,fan-shaped turning,and L-shaped driving were proposed on the basis of optimizing the original working area division in Xiwan Open-pit Coal Mine,the impacts of various working area turning schemes on production capacity,balanced stripping ratio,and soil discharge planning were comparatively analyzed,and the optimal working area turning scheme was comprehensively selected.The research results indicate that the L-shaped driving scheme has the least number of equilibrium periods,the minimum stripping ratio of the re-trenching scheme is the smallest,and the average stripping ratio of the fan-shaped turning scheme is the smallest;when land can be requisitioned from farmland and the Fangjiapan tail pit can be used for soil dumping,it is recommended to adopt the re-trenching scheme;when the problem of land requisition from farmland in the first working area cannot be solved,it is recommended to adopt the L-shaped driving scheme.
作者
李雁飞
LI Yanfei(Xiwan Open-pit Coal Mine,China Energy Shaanxi Shenyan Coal Co.,Ltd.,Yulin,Shaanxi 719000,China)
出处
《中国煤炭》
北大核心
2024年第8期135-141,共7页
China Coal
关键词
露天煤矿
采区划分
采区转向
剥采比
排土规划
open-pit coal mine
working area division
working area turning
stripping ratio
soil disposal planning
