摘要
某矿217综放面主采煤层上方的两层巨厚砾岩将对工作面的顶板来压、顶板管理造成潜在的威胁。通过顶板来压特征分析,得出了顶板周期来压步距、来压强度,进行了直接顶分类和老顶分级;通过支架的初撑力、末阻力与运转特性分析,证明了支架具有良好的适应性。
Based on the strata control observation of NO. 217 fully mechanized caving face in jiaoping mining area, periodic weighting length and ground pressure strength of roof are obtained, and immediate roof and main roof are classified. After analyzing the setting load, end load and operation characteristics of support, the adaptability of support in the working face is favorable.
出处
《山东煤炭科技》
2009年第5期151-152,共2页
Shandong Coal Science and Technology
关键词
巨厚砾岩
来压特征
支架适应性
矿压观测
huge thick conglemerate characteristics of roof weighing adaptability of support strata control observation
