摘要
以石圪台矿地质资料为背景,基于材料配比实验制作物理模型,模拟2-2煤层开采中上覆岩层及地表的移动规律。研究结果表明:地表纵向最大下沉量3.6 m;竖直方向下沉量关于下沉中心位置左右对称;顶板初次来压步距约32.0 m,周期来压步距约10.5 m。
Taking the geologic information of Shigetai mine as the background, based on the similar material proportioning test, the physical simulation model was built up to study strata movement law of 2-2 coal seam during the whole excavating procedure. The study results indicate： the largest sinking distance of the ground surface reaches 3.6 m; the surface subsidence is symmetric between the right and left concerning center-line; the roof first weighting step is about 32.0 meters and the periodical weighting step is about 10.5 meters.
出处
《煤炭技术》
CAS
北大核心
2017年第1期61-63,共3页
Coal Technology
基金
科技部"十二五"国家科技支撑计划项目(2012BAC10B03)
国家自然科学基金项目(51464036)
关键词
地表下沉
初次来压
周期来压
surface subsidence
first weighting
periodical weighting
