摘要
总结了薄煤层选采工作线长度的影响因素,并从设备时间利用系数、运输成本、爆破作业3个方面分别建立了选采工作线长度的确定方法。最小选采工作线长度随着时间利用系数的增加呈线性增长,对于厚度均匀的薄煤层,运输成本与选采工作线长短无关。综合3方面得出了哈尔乌素露天矿5号煤层的选采工作线长度为500 m的结论。通过建立效率匹配系统,对5号煤层的选采效率和夹岩的剥离效率进行分析,得到了选采方案的可靠性。结果表明:选采工作线的长度在符合多种因素要求的同时,还要保证执行追踪开采时不会被压缩。
After summarizing the factors affecting the length of selected mining front of thin coal seam, the paper established the method of determining the length of selected mining front separately based on three aspects such as equipment utilization coefficient, transportation cost and blasting operation. The minimum length of the selected mining front linearly grew with the increase in the equipment utilization coefficient, and the transoortation cost had nothin~ to do with the length of the selected minin~ front of the thin coal seamwith uniform thickness. Taking into the above three aspects account, the length of the selected mining front of the fifth coal seam in Harwusu strip mine was determined as 500 m. In addition, the mining efficiency and the stripping efficiency of interlayer rock of the fifth coal seam were analyzed by building efficiency matching system, and the reliability of the mining scheme was obtained. The results showed that the length of the selected mining front should not only accord with various factors but also not to be compressed in tracing mining.
出处
《矿山机械》
北大核心
2013年第11期7-11,共5页
Mining & Processing Equipment
基金
国家863科技计划项目(2012AA062004)
十一五国家科技支撑计划项目(2006BAB16B00)
国家自然科学基金重点项目(51034005)
煤炭资源与安全开采国家重点实验室自主研究课题资助(SKLCRSM10X01)
中央高校基本科研业务费专项资金资助
中央高校卓越绩效专项资金资助(2011QNA13
2010ZDP01A02)
江苏高校优势学科建设工程资助项目(SZBF2011-6-B35)
关键词
露天矿
薄煤层选采
工作线长度
效率匹配
strip mine
selected mining of thin coal seam
length of front
efficiency matching
