摘要
“采充留”部分充填方法是兼顾矿井生产成本提高资源采出率的有效及可行性方法,通过建立“采充留”开采覆岩结构力学模型,分析“采充留”部分充填开采覆岩破坏特征,表明影响覆岩稳定程度的主要因素为工作面充填宽度与垮落宽度比,提出了评价充填工作面稳定性的系数K及其计算方法,采用数值模拟方法研究了超高水作为充填材料的“采充留”部分充填开采地表沉陷控制效果,证明了通过合理设计相应的充填工作面宽度及材料配比,在保证工作面安全开采的情况下节省充填成本37%,同时可实现在兼顾矿区环境及地面建筑物保护的基础上提高深部资源采出率。
The"mining,backfilling and retaining"partial filling method is an effective and feasible method to take into account the mine production cost and improve the resource recovery rate.By establishing the structural mechanics model of"mining,backfilling and retaining"mining overburden,the failure characteristics of"mining,backfilling and retaining"partial filling mining overburden are analyzed.It shows that the main factor affecting the stability of overburden is the ratio of filling width to collapse width of working face,the coefficient K for evaluating the stability of the filling face and its calculation method are proposed.The surface subsidence control effect of"mining,backfilling and retaining"partial filling mining with ultra-high water as filling material is studied by numerical simulation method.It is proved that by reasonably designing the corresponding filling face width and material ratio,the filling cost can be saved by 37%under the condition of ensuring the safe mining of the working face,at the same time,it can improve the recovery rate of deep resources on the basis of taking into account the protection of mining area environment and ground buildings.
作者
高翔
王方田
冯光明
GAO Xiang;WANG Fangtian;FENG Guangming(Zaoquan Coal Mine,CHN Energy Ningxia Coal Industry Co.,Ltd.,Yinchuan 753000,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Deep Coal Resource Mining,Ministry of Education of China,China University of Mining and Technology,Xuzhou 221116,China)
出处
《煤炭技术》
CAS
北大核心
2023年第1期70-74,共5页
Coal Technology
关键词
资源采出率
采充留
部分充填
工作面稳定性
resource recovery rate
mining backfilling and retaining
partial filling
stability of working face
