厚覆盖层拉斗铲倒堆工艺下采煤系统稳定性  

Stability of Coal Mining System Under Dragline Stripping Technology with Thick Overburden

作　　者：尚涛[1] 周伟[1] 才庆祥[1] 杨海春[1] 

机构地区：[1]中国矿业大学矿业工程学院,煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《采矿与安全工程学报》2010年第2期175-178,共4页Journal of Mining & Safety Engineering

基　　金：国家“十一五”科技支撑计划项目(2006BAB16B00)

摘　　要：为了研究厚覆盖层拉斗铲倒堆工艺下采煤系统稳定性,根据拉斗铲与半连续系统工作流程,分析了拉斗铲工艺下坑底回采煤量与传统定义的区别,给出了相应的计算公式,同时提出了拉斗铲可覆盖面积的概念,并给出了拉斗铲可覆盖面积的定义及计算公式.利用回采煤量和拉斗铲可覆盖面积两个参数作为评价指标,得出坑底回采煤量是保证矿山生产连续性的基础,可覆盖面积是保证矿山年生产煤量稳定性的关键的结论.实例研究表明:黑岱沟露天煤矿的可覆盖面积为0.5 Mm2,可保证产量为24.47 Mt;回采煤量最大为3.74 Mt,可供1.2个月开采,由于拉斗铲系统的故障时间远小于1.2个月,所以可以保证采煤的稳定和连续.In order to study the stability of coal mining system under dragline stripping technology with thick overburden,according to the workflow of dragline and semi-continuous mining system,we analyze the difference between coal recovered definition and the traditional definition,give out the corresponding formulas;in addition,we put forward the concept of overcast area of dragline,the definition and calculation formula of overcast area.Taking coal recovered and overcast area as two valuation parameters,we obtain the results that coal recovered is a base to ensure work continuity and the overcast area is a key to ensure production stability.Last,the study of Heidaigou surface mine shows that the overcast area is 0.5 Mm2,which can ensure a production of 24.47 Mt.The maximum coal recovered is 3.74 Mt,which can last 1.2 months of mining.

关 键 词：露天矿 厚覆盖层 拉斗铲 可覆盖面积 稳定性 

分 类 号：TD824[矿业工程—煤矿开采]