西安科技大学学报2011，Vol.31Issue(2)：137-140,4.
坚硬石灰岩顶板破断及来压规律模拟实验研究
Similar simulation test on hard limestone roof in fully-mechanized coal mining face
摘要
Abstract
The thick and hard limestone roof of 10# coal seam have higher mechanical strength and better integrity in Chenghe mining area.The thick and hard roof are difficult to cave, and have potential security threats in face.Based on similar simulation test research, the movement rule of overlying strata and strata behaviors of hard limestone roof were analysised.The results showed that the distances of first and average periodic weighting of the main roof were 65 m and 22.8 m; the length and pressure behavior and the load of support in the workface were bigger than the general mechanized faces.The collapsed zone of the thick and hard limestone roof was thin and the broken down rock strata was continuous and bending in most time.关键词
石灰岩顶板/相似材料模拟实验/矿压规律分类
矿业与冶金引用本文复制引用
索永录,程书航,杨占国,刘明亮..坚硬石灰岩顶板破断及来压规律模拟实验研究[J].西安科技大学学报,2011,31(2):137-140,4.基金项目
国家自然科学基金项目(50570473) （50570473）
