摘要
针对拉斗铲倒堆工艺存在的投资大、适应性差等问题,提出了一种适用于最下部薄及中厚矿层开采的倒堆剥离工艺。单斗挖掘机站立于煤层顶板将剥离物倒堆排弃至内排土场揭露煤层顶板,同时布置一台液压反铲站立于内排土场平台上进行二次倒堆揭露煤层台阶坡面,完成倒堆剥离作业。与单斗—卡车间断工艺相比,该工艺不仅可避免费用高昂的卡车运输,同时有利于缩短整个露天矿的剥离物内排运距,即使重复倒堆率达100%时采用该工艺在经济上仍是合理的。实例研究表明,安家岭露天煤矿11#煤层采用单斗挖掘机倒堆开采可节约剥离费用约1 400万元/a。
Aiming at problems like large investment and poor adaptability of overcast stripping system of dragline, a stripping system suitable for thin and medium thickness seam mining has been put forward. The excavator has overcast the overburden in order to expose the coal seam roof, and the hydraulic backhoe standing on the platform for secondary pouring pile has been used to expose the coal seam bench slope, and finally to finish the overcast stripping. Compared with the shovel – truck system, the overcasting technology system can not only avoid the high cost of truck transportation, but also shorten the distance of open-pit stripping. Therefore, even the repeated overcast rate is up to 100%, using the overcast stripping system is still reasonable economically. The case study has shown that, using overcast stripping in Anjialing open-pit coal mine for 11# coal seam mining can save the cost about 14,000,000 yuan/a.
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2016年第2期336-341,共6页
Journal of Mining & Safety Engineering
基金
国家高技术研究发展计划(863)项目(2012AA062000)
国家自然基金重点项目(51034005)
关键词
倒堆剥离
单斗挖掘机
窄采掘带
液压反铲
overcast stripping
single bucket excavator
narrow cut zone
hydraulic backhoe
