steep breast

Methods of retaining water barrier and its stability analysis of steep working face

急倾斜工作面防水煤柱留设方法及其稳定性分析

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。

Methods of retaining water barrier and its stability analysis of steep working face

急倾斜工作面防水煤柱留设方法及其稳定性分析

Analog simulation study on distributing law of gas in goaf of steep mining face

急倾斜工作面采空区瓦斯分布规律的相似模拟研究

The effect of water-block for the bearing structure in main roof rocks due to mining in steep long-wall seam

急倾斜长壁工作面开采老顶平衡结构阻水性能

Research on anti-down and anti-skid device in high-dipping coal face

急倾斜采煤工作面防倒防滑装置的研究

Technology of Light-support Caving Mining with Large Angle

轻放工作面大倾角仰斜开采工艺技术

Strata Behavior in Large Section Face of Steep Seams

急斜煤层大段高工作面矿压显现规律

The Law of strata behaviours in Hydraulic Shortwalling A- long the Dip

倾斜短壁式水采工作面的矿山压力显现规律

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 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

Characteristics and Prevention Technology of Spontaneous Combustion in Goaf Area of False Dip Longwall Mining Face with Flexible Hydraulic Powered Shield Support

伪倾斜柔性掩护支架工作面采空区自然发火特点及防治技术

Study on Inclined Longwall Working Face Stress Distribution and Its Influence to Gas Pressure

倾斜长壁工作面应力分布及其对瓦斯压力影响规律研究

Probe into Gently Dipping Strata Roof Stratifugic Water Jeopardizing on Fully Mechanized Mining Face and Controlling

缓倾斜地层顶板离层水对综采工作面的危害及防治探讨

Inclined thick coal seam Layered over Top-coal Caving Face Mining Technology of Turning Points

厚煤层倾斜分层综放工作面过转弯点开采技术探析

Study on Behavior of Battered Piles under Inclined Load;

倾斜荷载作用下斜桩基础工作性状研究

Selection and Application of Section Form and Support Way in Steep Coal Seam

急倾斜煤层断面形状及支护方式的选择及应用

having the slant of a bevel.

具有斜面的倾斜特点。

Study of Surrounding Rock Movement of Steep Seam under Pore-water Pressure;

孔隙水压作用下急倾斜煤层围岩运动规律研究

a sharp slanting blow.

一种急速的倾斜的打击。