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.
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.
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.
进行放顶煤开采时，应注意瓦斯、自燃、粉尘的治理及提高回收率等问题。
The problem of gas, self-burn, dust management and increasing rate of recovery should be attended.
煤与瓦斯突出危险煤层的放顶煤开采有严格的法规限制，限制主要是从安全上考虑的。
There are strict regulations in top-coal caving mining with hazard of coal and gas outburst. The main reason is the problem of safety.
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。
As longwall caving technology prevails rapidly in China, gas emission from longwall faces and goaf area increases continuously.
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.
在进行水体下综采放顶煤开采时，可利用给出的计算公式进行导水裂缝带最大高度的计算。
During the fully mechanized top coal caving mining under the water bodies, the given calculation formula could be applied to calculate the Max height of the water conducted fractured zone.
以放顶煤开采现场实测为基础，着重探讨了顶煤的变形特征、顶煤变形与支承压力的关系；
Based on in situ measurement with sub-level caving mining, the characteristics of top-coal deformation and top-coal deformation vs abutment pressure are mainly discussed.
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.
对该采煤方法的巷道布置、阶段顶煤高度以及回采工艺进行了研究，形成了巷柱式放顶煤开采技术。
The paper studied the gateway layout, the sectional top coal height and the coal mining technology of the coal mining method. Then the gateway and pillar top coal caving technology was developed.
在矿区铁路下进行放顶煤开采所引起的地表及铁路的变形量大，变形速度快，从而导致矿区铁路维护困难。
The fully mechanized caving coal mining under the railway in mine area will result in difficult maintenance of railway because of great deformation and subsidence speed of terrene and railway.
运用相似材料模拟和数值计算的方法，对水平分段和倾斜分层放顶煤开采引起的围岩移动特征进行了比较。
The rock movement between the horizontal section of the top coal caving and inclined slicing of the top coal caving was analyzed.
文章阐述了采场薄板矿压理论建模的基本思想、立论依据、理论成果及其在煤层的普通开采和放顶煤开采中的实际应用情况；
The paper reviews state of the art ground pressure theory of thin slab in coal mining such as scientific concepts, foundation argumentation, theoretical development and the field application.
为了满足轻型放顶煤开采的需要，对6MG 2 0 0w型采煤机进行了技术改造，使其适应工作面倾角大、夹矸断层多的工作条件。
To meet the needs of coal fall down mining technology, the technical reformation have been made on 6mg200w shearer and therefore it can use in the big seam Angle, more ore and seam broken condition.
研究表明：放顶煤开采、提高支架工作阻力可以减缓煤壁压力，煤体合理注水可以提高煤体黏聚力与抗剪强度，它们是防治极软煤层煤壁片帮的有效措施。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
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.
文章介绍了新疆乌鲁木齐矿业集团急倾斜近距离厚煤层水平分段轻型支架放顶煤联合开采技术及取得的技术经济效果。
This article presents the combined mining technology of horizonal sectional light prop used in steeply inclined short_interval thick coal seams and gains the technical and economic benefits.
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.
该方法应用于淮南矿区，成功地开采了数个简易放顶煤工作面，综合防灭火技术取得了较好经济和社会效益。
The system has been successfully practiced at several working faces in Huainan mine with satisfactory social and economic benefit.
深入分析了层间顶煤的破碎特点，指出层间顶煤的破碎效果是多因素综合作用的结果，而在不同的开采条件下将具有不同的放顶煤效果。
The stability of main and immediate roof structure and its influence on strata behaviour are analysed. The failure features of roof coal between top and bottom slice are thoroughly studied.
深入分析了层间顶煤的破碎特点，指出层间顶煤的破碎效果是多因素综合作用的结果，而在不同的开采条件下将具有不同的放顶煤效果。
The stability of main and immediate roof structure and its influence on strata behaviour are analysed. The failure features of roof coal between top and bottom slice are thoroughly studied.
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