This is the beginning of longwall mining.
这是长壁开采的开始。
The new technique increases the efficiency of longwall panel mining.
这种新技术提高了长壁盘区采矿的效率。
This all happened inside a facility that does what's called longwall mining.
事故发生在进行长壁开采的设施内。
The roof slice longwall method increases the work of laying false roof for next slice.
长壁采煤法的采煤工艺具有多重特点：顶分层采煤增加了要为下分层填设假顶的工作。
Their reliable, compact design make them the outstanding choice for powering hydraulic longwall equipment.
他们以其简洁，可靠的设计跻身于液压长臂开采行业的领先地位。
The mechanism of water inrush from coal floor in longwall face is simulated by the similar material tests.
利用相似材料模拟试验，模拟了采场底板突水机理。
This model provides a unified idea and method for study of pressure in longwall mining and strata movement.
组合岩梁模型的建立，为采场矿压和岩层移动的研究提供了一种新的思想和方法。
The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate.
本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。
Using hydraulic supports in heavy grade longwall face with sublevel caving, anti-topple and antiskid are the key factors.
在大倾角倾斜煤层进行综放开采，支架的防倒、防滑成为决定放顶煤开采成功与否的关键。
The paper gives a brief account of the use and developing tendency of the inclined longwall coal-mining at home and abroad.
本文主要介绍国内外倾斜长壁采煤法的使用概况及发展趋势。
As longwall caving technology prevails rapidly in China, gas emission from longwall faces and goaf area increases continuously.
随着放顶煤开采技术在我国的迅速普及，采煤工作面及采空区的瓦斯涌出量不断增加。
The ventilation system provides a new method to realize the safe and efficient mining of high gas longwall mining with sublevel caving.
这一通风系统可为其他高瓦斯综放面安全高效开采提供了一条新的技术途径。
Serving as the key equipment for fully mechanized longwall face, hydraulic support plays a major role to the whole face 'safe production.
液压支架是综采工作面的重要设备，对整个工作面的安全生产起着至关重要的作用。
The influence of staggered distance on the failure of floor strata in double-longwall mining on the confined aquifer is local and temporary.
承压水体上对拉面开采的错距对底板岩层破坏的影响只是局部的和暂时性的。
Based on the structural characteristics of floor in the longwall face, the structural model of the key stratum (KS) in floor is established.
根据采场底板岩体结构特征，建立了底板岩体的关键层(KS)结构模型。
The paper introduced the size, equipment, gateway arrangement and production of the fully mechanized longwall coal mining faces at home and abroad.
介绍了国内外长壁综采工作面的尺寸、设备、回采巷道布置及工作面单产的现状及发展趋势。
This paper presents the development, design and performances of a specialized wrench for retrieving bolts which are used to support the longwall headings.
介绍一种用于回收井下巷道支护锚杆的专用扳手的开发，设计和在井下现场的使用效果。
In this paper, the methane emitted from three sources, i. e. from the goaf, the coal face and the broken coal, into a mechanized longwall face is analyzed.
本文对综合机械化采煤工作面的三种沼气源的涌出进行了分析。
A major requirement of any longwall mine layout is that it provides the best possible financial performance, given the existing circumstances and limitations.
所有长壁矿井布置的主要要求是在现有环境和限制下提供最佳的可能财务业绩。
The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.
叙述了走向长壁后退式柔性掩护支架采煤法在急斜煤层中的应用及效果。
A new type self-walking advance timbering support set is adopted in longwall coal mining face of Halagou coal Mine, Shendong coal District by Shenhua Group co.
神华集团神东矿区哈拉沟煤矿在长壁工作面回风巷中采用了一种新型自移式超前支护支架组。
The paper introduces type choose and working resistance determining of powered support and its application in longwall with top-coal caving face of xiagou mine.
介绍了下沟煤矿综放开采支架选型与工作阻力的确定以及支架的适应性。
By field observation and simulating test of shallow seam longwall mining, the phenomenon of main roof asymmetry breaking is discovered during the first weighting.
依据典型浅埋煤层工作面的实测和模拟，发现了采场老顶初次破断的非对称现象。
Overlying strata spatial structures of longwall formed by working faces that is mined and four sides are substance coal are named "o" letter type spatial structures.
我们把一面采空(四周为实体煤)形成的采场覆岩空间结构称为“O”型空间结构。
The mining practice of sub-level longwall face in Yima coal mine of Henan Province was introduced. These techniques could be used in coal mines with similar condition.
开采结果表明，论文中提出的对岩层结构的认识和采取的控制技术是正确的，可以在条件相似的矿区推广应用。
Based on the successful application of gob-side entry retaining at longwall top coal caving face, a new way for realizing intensive and high efficiency is put forward in thick seams.
综放沿空留巷技术研究成果的成功应用为综放工作面实现集约化高效生产开拓了新路。
The paper introduces the background, the technical difficult, the general design and the operation of technical transformation in Xiagou coal mine with longwall top-coal caving mining.
介绍了下沟煤矿综放技改合作项目的缘由、技术难点与总体技术设计以及项目运作与体会。
Based on the model of mechanics, some functional formulae of strata and surface movement above longwall mining goaf are derived by using the displacement method of theory of elasticity.
本文在力学模型的基础上，利用弹性理论的位移函数法导出了长壁采煤法采空区上方岩层及地表移动的函数表达式，同时给出了岩层及地表最大移动值的计算公式。
Based on the model of mechanics, some functional formulae of strata and surface movement above longwall mining goaf are derived by using the displacement method of theory of elasticity.
本文在力学模型的基础上，利用弹性理论的位移函数法导出了长壁采煤法采空区上方岩层及地表移动的函数表达式，同时给出了岩层及地表最大移动值的计算公式。
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