放顶煤工作面的支架外载荷普遍前移。
The external load exerted on the support used in sub-level caving face generally moves forward.
详细介绍了振动放顶煤技术的原理和机理。
The fundamental principle and mechanism about the technology of top-caving method with vibration are introduced in the paper.
这些碗盘是放顶架上的。
分析了放顶煤开采顶煤冒放性的影响因素。
Analyses factors that affect cover caving ability of roof coal in sublevel caving mining method.
综采放顶煤技术已成为厚煤层开采的高产高效采煤技术。
Fully mechanized caving mining has became mining technology of high output and efficiency in thick coal seam mining.
分析了确定综采放顶煤开采工艺易发火地区及发火原因。
The easy ignition area in compound mining caving coal process and reason are analyzed and determined.
对于煤层内夹石厚度比较大的情况，建议不采用放顶煤开采。
具突出危险性的厚煤层采用综采放顶煤开采法对消突是有积极作用的。
Finally, the paper considers that the fully mechanized coal caving mining is helpful to control outburst hazard.
本文用相似材料模拟，现场实测等方法研究放顶煤开采覆岩活动规律。
Based on the similar material simulation and prectical experiment in situ, the movement charactedistic of overburden strata of longwall sublevel caving method has been studied in the paper.
放顶煤回采工艺参数的合理选取，对顶煤的有效回收起着重要的作用。
The rational selection of the technique parameters played an important role in the effective recovery of top coal.
在鹤岗矿业集团公司应用综采放顶煤采煤法，取得了良好的经济效益。
We have got good economic benefit by adopting the apply of multiple ceiling coal mining in the Mine Block of Hegang.
讨论了放顶煤开采的采场应力场的分布规律及其对冲击地压的控制作用。
The distribution law of inner stress field and its effect on controlling underground impact pressure are discussed, when sub-level caving method is introduced.
放顶煤开采煤炭回收率的高低是关系到能否推广这种采煤方法的关键技术。
A high or low coal recovery rate of the top coal caving mining is related to the key technology of the coal mining method to be widely applied.
本文提出了一种矿房矿柱阶段性连续回采，深孔放顶处理空区的采矿方法。
This paper introduced a new method for it, ie continuous stoping of room and pillar in stages and to fill mined bed with falling roof by deep-hole blasting.
采用锚网支护方式维护厚煤层放顶煤沿底回采巷道时，多数需要考虑锚索加固问题。
The bolting with wire mesh is commonly used actual mining roadway of the thick coal seam, and in some cases the cabling reinforcement should be considered.
针对这一情况，从药室爆破放顶充填采空区，从而达到分层崩落法采矿的护顶层要求。
Based on this case, through filling the gob area by means of chamber blasting, the requirement of protective top - layer for slicing and caving can be achieved.
同时，放顶煤综采工作面的瓦斯治理也是世界各国煤矿瓦斯灾害防治技术的薄弱环节。
Simultaneously, the gas control in roof caving and fully mechanized mining is the unsubstantial aspect of prevention measures for gas disasters in all over the world.
算例的计算结果表明，该方法简单、快速，有望在放顶煤开采和水体下采煤中得到应用。
A numerical example shows that this method is effective and easily to come into use in the fields of top coal caving mining and coal mining under water bodies in future.
对影响悬移支架放顶煤技术成功应用因素进行了系统分析，并总结出了其主要影响因素。
This paper analyzes the success application influence factors about the roof caving technology of cantilever support and summarized it's main factors.
对陕西火石咀煤矿厚煤层放顶煤开采自然发火原因进行了分析，并提出了合理的防治措施。
The paper analyzes the causes of spontaneous ignition in caving mining in Shaanxi Huoshizui coal mine and puts forward reasonable prevention measures.
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。
Using hydraulic supports in heavy grade longwall face with sublevel caving, anti-topple and antiskid are the key factors.
急斜煤层水平分段放顶煤开采与缓斜煤层不同，工作面沿煤层厚度的水平线布置，长度短。
The horizontal section top coal caving in steep seam is different from the gently inclined seam.
在现场观测及实验研究基础上，对急倾斜水平分段放顶煤开采过程中顶煤体结构进行了研究。
Base on the site observation and experimental research, the paper studied the top coal structure for the top coal caving mining in steep inclined seam sections.
通过对焦作矿区高瓦斯多水害防治技术研究，找出适合该条件下的炮采放顶煤模式的采煤方法。
Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions, the mining coal method of caving working face is found.
结果表明，放顶煤采煤法其支承压力分布形式与分层开采法类似，但在量值及影响范围上有增减。
The result indicated That the abutment pressure distribution form was similar to that of slicing mining method but its magnitude and affecting range changed.
在高瓦斯矿井中，炮采放顶煤工作面的瓦斯治理工作一直是个难题，它严重制约着煤矿的安全生产。
Gas management is a difficult problem at the blasting and caving face in high gas mine. It restricts the safe production of coal mine.
对厚煤层采用分层与放顶煤相结合的采煤方法，既可控制导水裂缝带的发育高度，又可降低生产成本。
A coal mining method with a combination of a slicing and caving, a double benefit in control of water conducted crack zone development and in reduction of coal production cost can be obtained.
同时研究本分类系统软件在综采放顶煤工作面顶煤的可放性诊断、支架选型和放煤机构设计中的应用。
And study the classification system application in diagnosing the caving and drawing characteristics of top-coal, choosing support and designing drawing mechanism.
同时研究本分类系统软件在综采放顶煤工作面顶煤的可放性诊断、支架选型和放煤机构设计中的应用。
And study the classification system application in diagnosing the caving and drawing characteristics of top-coal, choosing support and designing drawing mechanism.
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