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- longwall face development 长壁工祖升采
- The reasonable layout of tunnel below longwall face is described. 论述了受采动影响的底板岩巷的合理布置问题。
- According to the conditions of seam No.5 in Shifengshan Coal Mine,longwall face roof coal drawing method is chosen. 通过对峙峰山煤矿5号煤采煤方法的设计,提出了采用综采放顶煤法回采5号煤。
- The strata behavior rule of Longwall face with individual props in shallowly buried coal seam covered with thick soil was summarized. 实验和观测表明,尽管其上覆岩层的力学强度比较小,煤层埋深浅,但工作面初次来压步距大,矿山压力显现剧烈,周期来压台阶下沉量大。
- 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。
- 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 expert system of weighting on the basis of these knowledge can satisfy the demand of roof weighting forecasting in longwall face. 架起了“自动预报”和“预报机理”之间的桥梁,经实例验证,该专家系统能满足长壁工作面来压预报的要求。
- Based on similarity theory, immediate roof with many cracks caving in longwall face are studied and controlled by modelling experiment. 本文根据相似理论,对多裂隙直接顶的破坏问题进行了模拟实验及控制研究。
- The law of top coal movement on a fully mechanized longwall face with top coal caving wasanalysed thoroughly on the basis of field observation andfinite element calculation. 本文根据现场观测、数值计算以及理论分析,详细阐述了放顶煤采场的顶煤变形运动规律,指出了顶煤变形运动可划分成四个区:顶煤变形区,压裂区,松动区和放落区。
- Their findings showed that in early foetal life, brain and face development are intimately connected. 他们的研究结果表明,在早期胎儿生命过程中,大脑和面容发展密切相联。
- Huang Q X, Qian M G, Shi P W.Structural analysis of main roof stability during periodic weighting in longwall face[J].Journal of China Coal Society, 1999,24(6): 581-585. [6]黄庆享;钱鸣高;石平五.;浅埋煤层采场老顶周期来压的结构分析[J]
- This paper introduces the relationship between spatial structure of overlying strata and mining pressure field in longwall face revealed by microseismic monitoring techniques. 介绍了用微地震定位监测技术揭示的采场覆岩空间破裂与采动应力场的关系。
- According to the result of Lab test and in site observation,this paper put forward that the arch structure similar to parabola exists in overlying bed of longwall face. 根据实验和现场观测结果,提出了壁式采场上覆岩层中存在抛物线形拱结构,建立了该结构的力学模型,并进行了内力分析,同时提出了工作面支架受载的计算方
- 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. 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。
- According to the field observation and theoretical research,the overlying strata structure and mining pressure control techniques for sub-level longwall face surrounded by mined areas were presented. 论文通过理论和实践研究,提出了四面采空“孤岛”采场的顶板结构和相关矿压控制技术。
- Based on the structural characteristics of single roof key stratum in shallow seam longwall face, the structural model of the roof key stratum in a state of plasticity is established. 摘要针对浅埋煤层单一关键层长壁开采时顶板岩体结构的破断特征,建立了顶板岩体关键层塑性状态下的结构模型。
- Development of the hydraulic support affording system in the longwall face 长壁式工作面自移液压支架供液系统的改进
- ground pressure at longwall face 长壁工作面地压
- Keywords longwall face;axial fan;centrifugal fan; 长壁工作面;轴流式风机;离心式风机;
- longwall face surrounded by mined areas 四面采空“孤岛”