在长壁工作面通过的过程中，地面垂直钻孔可能随岩层移动而发生破坏。
During overlying rock strata being fractured, the surface gas drainage boreholes may be damaged due to ground movement.
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。
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.
针对长壁工作面顶板垮落具有局部、分段、迁移的时空特征，将长壁工作面采场顶板划分成若干个相互铰接的薄板，建立了薄板组力学模型。
Based on the local, migratory and subsection characteristics of main roof fall of longwall face, the main roof was divided into some plate group, and plate group mechanical model was established.
走向长壁后退式开采工作面用风帘控制粉尘和瓦斯简单易行，能够解决生产中的实际问题。
It's easy and useful to control dust and gas with wind-cloth curtains in the bringing back long wall face.
看重分析了长壁采煤工作面煤壁应力特点和冲击劈裂式采煤的相互作用关系，提出了冲击破煤的作业方式。
The paper emphatically analyses the interaction between the wall stress characteristic and coal getting by impact on the longwall face, proposes the work pattern of coal breaking by impact.
依据浅埋煤层矿压显现特征，给出浅埋煤层长壁开采工作面支架合理工作阻力及安全界限的确定方法。
Base on the weighing feature of the shallow coal bed, the specifying method of the support working resistance and safety margin is presented in the shallow coal bed.
以煤层上覆岩层组成、长壁回采工作面覆岩活动规律、煤层埋藏深度作为浅埋煤层开采界定指标，论证了指标合理取值。
The reasonable definitional feature of shallow coal seam is analyzed base on the overlying strata's composition, the activity law long-wall mining'soverlying layers and the depth of coal seam.
通过进行设计优化，提出采用旁路放水系统放水方案，可有效解决工作面初采的放水问题，为倾斜长壁开采的综放工作面放水方式提出新模式。
Through optimizing, we suggested the measure of bypass draw off system which can solve draw off problem effectively. This suggested a new mode at inclined long wall mining.
当倾斜长壁开采的综放工作面初采范围处于向斜构造区，造成初采放水无法利用已有巷道形成自流放水，必须考虑动力排水或其他的放水方式。
When long wall mining to the dip in fully-mechanized coal winning working face is inclined area, we may can't use existing drift draw off water.
并成功进行了实践应用，为进一步完善松软厚煤层长壁综放工作面顺槽稳定性控制理论技术体系进行了有益探索。
It was succeeded in practical application. It is an useful exploration for the roadway stability control of fully-mechanized top-coal caving long-wall face in soft and thick coal seam.
并成功进行了实践应用，为进一步完善松软厚煤层长壁综放工作面顺槽稳定性控制理论技术体系进行了有益探索。
It was succeeded in practical application. It is an useful exploration for the roadway stability control of fully-mechanized top-coal caving long-wall face in soft and thick coal seam.
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