采矿与安全工程学报2018，Vol.35Issue(1)：100-105,6.DOI:10.13545/j.cnki.jmse.2018.01.014
特厚煤层综放工作面侧向煤体应力时空演化特征
Temporal and spatial evolution characteristics of lateral coal stress in fully mechanized top coal caving mining working face in ultra-thick coal seam
摘要
Abstract
To understand the temporal and spatial evolution characteristics of lateral coal stress is a ba-sis of determining the reasonable size of barrier pillar of a fully mechanized top coal caving mining working face. Based on the time series of lateral coal stress formation in the face, the stress evolution process of the lateral coal face is theoretically analyzed. The establishment of time transfer model of the gob side overburden structure - lateral coal stress in the ultra-thick seam is proposed and the quantitative lateral coal stress calculation formula is presented, which yields: the primary reason of shallow coal lat-eral high stress is the low cantilever block; the deep coal lateral high stress is because of the high canti-lever block; the increasing cantilever block could reduce the additional stress spreading farther away. The main influence factors of lateral coal stress in No.3107 working face are analyzed and their order is as: rock breaking angle > cantilever block thickness > bedrock movement angle.关键词
特厚煤层/侧向煤体/覆岩结构/支承压力/应力演化特征Key words
ultra-thick coal seam/lateral coal/overburden structure/abutment pressure/stress evolution characteristics分类
矿业与冶金引用本文复制引用
何团,黄志增,李春睿,洛锋,王东攀..特厚煤层综放工作面侧向煤体应力时空演化特征[J].采矿与安全工程学报,2018,35(1):100-105,6.基金项目
国家自然科学基金项目(51504135) （51504135）
煤炭科学研究总院科技创新基金项目(2015ZYJ001) （2015ZYJ001）
河北省自然科学基金项目(E2017402166) （E2017402166）
邯郸市科学技术研究与发展计划项目(1629209045-2) （1629209045-2）
