摘要
基于米箩矿110302首采工作面的实际工程地质条件，为研究工作面开采矿压显现规律，采用相似材料实验对该矿1号煤层开采过程进行模拟分析。研究表明：通过模拟实验，可以有效界定“两带”；该矿工作面直接顶初次垮落步距为36．0m，老顶初次垮落步距为46．0m，老顶呈现了4次周期来压．周期来压平均步距为13．73m，顶板上覆岩层的垮落角为48°-56°；由相似模拟实验得出的垮落带高度和导水裂缝带高度的数值和运用经验公式得出的数值基本相符。
Based on the actual engineering geological conditions of 110302 first mining face in Miluo Coal Mine,simulation analysis was made on the mining process of No. 1 seam in this mine by similar material experiments in order to study the regularity of the strata behaviors in the mining of this coal face. The research showed that'two zones'can be defined effectively through simulation experiment; the first caving distance of the immediate roof of this working face was 36. 0 m,and that of the main roof was 46. 0 m,the main roof presented four periodic weightings,the average distance of the periodic weighting was13. 73 m,the caving angle of the overburden strata above the roof was from 48° to 56 °; the height of the caving zone and the height of the water flowing fractured zone obtained by the similar simulation experiments were basically agreement with that obtained by the experience formula.
出处
《矿业安全与环保》
北大核心
2016年第3期18-20,24,共4页
Mining Safety & Environmental Protection
基金
贵州省教育厅"125"重大科技专项计划项目(黔教合重大专项字[2012]017号)
关键词
矿压显现
相似材料模拟
初次垮落
来压步距
strata behavior
similar material simulation
initial caving
weighting interval
