In view of steeply inclined seam roadway support status quo,with the specific engineering practice problem,used similar material simulation test to have the contrast study on steeply inclined seam roadway applied Isteel support,bolt support and bolt-cable-beam support under same condition.
针对急倾斜煤层巷道支护现状,结合具体工程实践问题,采用相似材料模拟实验,对相同条件下急倾斜煤层巷道采用工字钢支护、锚杆支护和锚(索)梁网支护3种支护形式进行对比试验研究,得出了不同支护形式下的围岩变形规律、以及不同支护形式在急倾斜煤层巷道条件下的适应性及支护机理,从而为急倾斜煤层巷道支护决策提供依据。
It has very strong reference meaning to building the morden coal mining working face with high yield and high efficency in the steeply inclined and much thicker coal bed.
通过对大洪沟煤矿一个轻放工作面煤层赋存条件和回采工艺的介绍,总结其关键技术应用成果,对在急倾斜煤层内建设高产高效的现代化采煤工作面具有较强的借鉴意义。
The characters of steeply inclined mineral deposit of coalpyrite accompanying bed and of mineral processing are analysed in this paper.
通过对急倾斜煤——硫铁矿伴生矿床赋存特点、选矿流程等方面的分析，提出了这类矿床初、后期较为可行的采矿方法。
Explosive technique of top coal caving in roadways of medium-thickness and high-thickness steep seam;
急倾斜中厚-厚煤层巷道放顶煤开采爆破技术研究
The roof fracture of steep seam manifests obvious random characteristic owing to irregularity of mining boundary and different stowing feature of breakage waste along faceline as well as geological and technical factors in pitch mining of longwall face.
急倾斜煤层由于开采边界不规则，及其它地质和技术因素，顶板破断具有明显的随机性。
Practice on sublevel combined mining in steep seam;
急倾斜煤层小阶段联合开采的实践