摘要
随着综合机械化采煤工作面过断层现场技术及经验的积累与完善,经过不断探索和发展,针对不同类型的断层构造,对应的过断层的方式也趋于多样化,常见的方式有调整割煤高度法、破顶起底法、强割硬过法、跳采法和综合方法。综采工作面过断层时的布设方式对工作面推进速度及煤资源开采效率存在很大影响,具体体现在过断层时割煤机切割顶底板的岩石总量以及煤资源剩余量两个方面。本文根据破顶起底法与调整割煤高度法的综合方法,主要探讨落差小于煤层厚度的迎面正断层,工作面布设方式对推进效率的影响,研究过断层切割顶底板岩石量及煤资源剩余量与工作面布设之间的关系。得出:综采工作面布设时,断层上下盘内的工作面布设长度相近,综采面倾角的设计范围应在3˚至9˚内,可有效提升工作面推进速度及提升煤资源开采效率。
As the comprehensive mechanized coal mining working face through fault field technology and experience accumulation and the consummation, after continuous exploration and development, in view of the different types of fault structure, the corresponding fault mode, tend to be diversified, common way of coal cutting height adjustment, breaking the bottom of the jacking method, strong cut the hard way, jump mining method and comprehensive method. The arrangement mode of fully-mechanized coal mining face when it passes through the fault has great influence on the advance speed of the working face and the mining efficiency of coal resources, which is embodied in the total amount of rock in the roof and floor cut by the coal cutter and the remaining amount of coal resources when passing through the fault. According to the comprehensive method of jacking up and cutting bottom and adjusting coal height, this paper mainly discusses the impact of frontal normal fault with a drop less than the thickness of coal seam and the way of working face layout on the propulsion efficiency, and studies the relationship between rock quantity and coal resource surplus of cutting through the fault and working face layout. It is concluded that when the fully-mechanized coal face is laid out, the length of the working face is similar in the upper and lower plates of the fault, and the design range of the inclination angle of the fully-mechanized coal face should be within 3˚ to 9˚, which can effectively improve the advance speed of the working face and the mining efficiency of coal resources.
出处
《矿山工程》
2020年第4期461-467,共7页
Mine Engineering
关键词
破顶起底法
断层构造
起坡角
切割岩石量
Breaking the Top and Lifting the Bottom
Fault Structure
Initial Slope Angle
The Amount of Rock Cut
