腾晖矿极松软厚煤层综放面矿压显现规律研究  

Investigations on Pressure Behavior of Fully-Mechanized Mining Working Face with Extremely Loose and Thick Coal Seams in Tenghui Mine

作　　者：李清[1] 曹怀建[1,2] 侯健[1] 王梦远[1] 马万权[1] 韩通[1] 王思嘉[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]霍州煤电集团河津腾晖煤业有限责任公司,山西河津031400

出　　处：《煤炭技术》2016年第11期27-30,共4页Coal Technology

基　　金：国家自然科学基金资助项目(51374212;51134025)

摘　　要：为研究极松软厚煤层综放面矿压显现规律,采用实测手段分析了工作面推进过程中基本顶周期来压步距、来压动载系数、支架初撑力、循环末阻力与支架前后立柱压力分布特征,建立了支架初撑力和循环末阻力频度演化规律模型。结果表明:基本顶平均周期来压步距11.88 m,平均周期来压动载系数1.39,与硬厚煤层来压特征相比,降低较明显。The in-situ monitoring method was utilized to analyze the distribution characteristics of the periodic weighting＇length, the periodic weighting dynamic coefficient, the support resistance, the cycling end resistance, and the pressure of support columns and to investigate the pressure behaviour of fullymechanized mining working face with extremely loose and thick coal seams. The evolutionary models of the support resistance frequency and the cycling end resistance frequency are established respectively. The results can be achieved as follows ,the average values periodic weighting length and the periodic weighting dynamic coefficient are of the main roof are 11.88 m and 1.39 respectively, which is lower than hard and thick coal seams.

关 键 词：周期来压步距 动载系数 正态分布 

分 类 号：TD263[矿业工程—矿井建设]