steep trench

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 coalpyrite 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 faceline 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

Simulation analysis of steep seam mining under rainfall condition

降雨条件下急倾斜煤层开采的仿真分析

Simulation and validation of mining below protective layers in a steeply dipping coal bed

急倾斜下保护层倾向保护范围数值模拟及验证

Study on Top Coal Caving Technology of Horizontal Section in Steep Seam in Weihuliang;

苇湖梁煤矿急倾斜综采放煤工艺研究

Study of Overburden Water Flowing Fractured Zone Height of Steep Seam Mining

急倾斜煤层覆岩导水裂隙带高度研究

Study on Gateway Top Caving Technology for Steep-inclined Coal Seam

急倾斜煤层巷道放顶煤回采工艺研究

Support Technology of Roadways Driving in Steep Middle Thick Coal Seam

急倾斜、中厚煤层巷道掘进支护技术

Analysis of Mining Steeply Inclined Coal Seam with Bursting Risk in Small Colliery

小煤矿急倾斜突出煤层开采方法探析

Safety top-coal-caving of heavy and steep coal seams under complex environment

复杂环境下急倾斜特厚煤层安全开采

Study on assorted technique of full-mechanized equipments for high-dipping thick Layer

急倾斜厚煤层综放设备配套技术研究

Optimization of mining method for steep dip and narrow vein in Bei-Gan-Gou Gold Mine

北干沟金矿急倾斜薄矿脉采矿方法优化选择

Supporting technology of cable anchor in high stressand great span and steeply inclined roadway

急倾斜高应力大跨度巷道锚索支护技术

Study on Overburden Strata's Movement Pattern and Mechanism of Mining Steeply Inclined Seams;

急倾斜煤层采动覆岩移动模式及机理研究

Simulation Research on the Surface Moving Rule Due to Mining in Steep and Multiple Coal Seams;

急倾斜多煤层开采地表移动规律模拟研究

Study on Top Coal Caving of Horizontal Section Top Caving in Steep Seam;

急倾斜水平分段放顶煤顶煤放出规律研究

Research on Repair Support of Fracture Zone in Steep Layer in Taiping Coalmine;

太平矿急倾斜破碎围岩巷道修复支护研究

Study on Technology of Top-coal Caving Mining of Lane Pillar in 3.5～10m Steeply Inclined Coal Seam;

3.5～10m急倾斜煤层巷柱式放顶煤开采技术研究

Research on the Rule of Surface Movement and Deformation Caused by Strip Mining in Steep Seam;

急倾斜煤层条带开采地表移动与变形规律研究

Study on Numerical Simulation of Ground Movement in Steep Coal Seam Mining;

急倾斜煤层开采地表变形的数值模拟研究

Study on Time Process of Ground Movement in Steep Coal Seam Mining;

急倾斜煤层开采地表移动时间过程研究