保持稳定的工作面推进速度有利于沿空巷道的维护。
当工作面宽度加大时，开始出现破裂的工作面推进长度减小。
The working face mining distance can decrease when fracture occurs and the mining width increases.
在垂直工作面推进方向上呈“J”字型，且对回风巷附近气体密度影响较大；
The direction of perpendicular to face advance shows J shape and the influence is bigger near the return airway.
认为钻孔的破坏是随着工作面推进而发生的动态过程，布置在靠近回风巷侧钻孔更加稳定。
The result shows that the borehole destruction occurs in the dynamic process of coal face advancing, and it is more stable when the borehole location is close to tailgate.
对于覆岩应力场和覆岩破裂有影响的采矿因素是工作面推进速度、采矿周期性和顶板管理方法。
The mining procedures which have an influence on the stress field in the strata and the fracturing of the roof are the rate of daily face advance, the mining rhythm, and the nature of working.
通过12501地表观测站实测资料，着重讨论工作面推进过程中活跃期主断面内各点的下沉速度规律和预计方法。
According the actual data of 12501 earth's surface observation station, the law and estimation of subside velocity of various points in active period are discussed emphatically during driving stope.
通过对岩层移动及破坏现象的分析和研究，找出了可能发生覆岩离层的岩层层位以及离层在工作面推进过程中位置的变化规律。
According to the analysis and research on the rock layer movement and destruction phenomenon, the position of divided layer and changing rule are found.
此外，厚松散层、地表采动程度、工作面推进速度、采煤方法与顶板管理方法、开采程序及时间因素等对采场覆岩空间结构均有一定影响。
Moreover, there are some other influencing factors such as: thick loose bed, surface mining degree, impel speed of working face, coal mining and roof manage methods, mining procedure and time.
并根据模拟结果，分析了随着工作面采动和推进，上覆岩层的破断过程、特征与来压特点。
According to simulation results, along with working face being advanced, the failure processes and features, and weighting of overlying strata, were analyzed.
推进油缸靠在工作面输送镏槽上，它的位置是通过支架的推进油缸的推进力来保持不变，作用在支架的两边。
The advancing ram acts against the face conveyor panline, whose position is held unchanged by the advancing rams, forces of the supports that are set on both sides of the support to be advanced.
通过现场实测，得出了对浅埋煤层高产高效工作面顶板来压特征和不同推进速度的矿压显现规律。
The field investigations show that ground pressure of coal face with high productivity depends on face advance rate.
同时，严格执行每日割煤10刀、放煤5刀、推进6米的生产循环，工作面实现稳步推进。
Meanwhile, the strict implementation of the 10-day coal-cutting knife, caving 5 knives, 6 meters to promote the production cycle, face to achieve steady progress.
此刨煤机工作面以仅1.5米的采高总共向前推进了21.5米，这样的煤层高度对于采煤机来说也是可以开采的。
The plow face advanced a total of 21.6 meters with a cutting height of only 1.5 meters - an achievement impossible for any shearer in such seam heights.
研究表明，工作面瓦斯涌出的总体平均水平与工作面采煤推进速度关系密切。
The result shows that the average of absolute gas emission rate of the working face closes to the cutting speed of the shearer.
研究表明，工作面瓦斯涌出的总体平均水平与工作面采煤推进速度关系密切。
The result shows that the average of absolute gas emission rate of the working face closes to the cutting speed of the shearer.
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