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.
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。
The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.
叙述了走向长壁后退式柔性掩护支架采煤法在急斜煤层中的应用及效果。
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.
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。
More than half of Appalachian coal mining is done by the wrenching mountaintop removal method.
阿帕拉契山脉一半多煤矿都采用山巅移除采矿的方法。
This paper analysis a variety of ventilating systems adopted in the coal face in mining coal of our country by using the method of statistics and compares their advantages and the range available.
本文用统计分析法介绍和分析了我国煤炭开采中，采煤工作面采用的各种通风系统并对比其优点和适用范围。
Taking Chenzhuang residential quarter of Pingdingshan Coal Mining Bureau for example, the evaluation method of foundation stability over goaf was systematically studied.
以平顶山矿务局陈庄住宅小区为实例，系统地研究了老采空区上方地基稳定性的评价方法。
The impacts on the security of Xifeihe River left embankment under coal mining are evaluated with elastoplastic model, two-exponent rheological model and probability integral method.
然后利用数值模拟软件中的弹塑性模型和流变模型及概率积分法开展煤层开采对西淝河左大堤安全的影响评价。
The main contents of the water prospection and dewatering design is presented. The mining method for down? Coal? Seam is discussed. Some safety measures are put forward.
介绍了积水区探放水设计的主要内容，讨论了下煤层开采的基本方法，提出了几点重要的安全措施。
The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.
通过分析近距离保护层开采、水力掏槽法及边抽边掘技术防治煤与瓦斯突出原理及实践应用，从而有利于煤与瓦斯突出矿井选择合理有效的防突技术。
Abstract: with the mine production mechanization degree unceasing enhancement, as a traditional method of coal blasting fall coal mining machinery has gradually be replaced.
摘要：随着煤矿生产机械化程度的不断提高，作为传统采煤方法的爆破落煤已逐渐被机械采煤所代替。
The concept of mining value of coal resource, assessment indexes and quantification method for them, assessment model and steps, a...
作者介绍了煤炭资源开采价值的概念、评估指标及其量化方法、评估模型与步骤以及评估实例。
The method of plate and shall large deformation rotation analysis is used in Wangying coal mining district, Fuxin area to predict faults and fractures in coal seams.
用板壳大变形理论转动角计算方法，对阜新矿区王营井田煤层大变形断裂和破裂带进行分析和预测。
The quick repairing method for the milling coal hole in the mining area is introduced.
简要介绍了在用的阶段溜煤眼的快速修复方法。
This paper analyzed the problems of the belt deviation for belt conveyor of the underground coal-mining, and summarized the corrective method for preventing the belt deviation of the belt conveyor.
针对煤矿井下胶带输送机胶带跑偏问题进行了分析，总结出了输送机胶带防止跑偏的防治方法，对胶带输送机在现场的使用和维护具有一定的实用价值。
This method applies equally when the normal rotating coal mining method is applicable, it is a more economical way.
此法在普通的全面旋转工作面中同样适用，是一种比较经济的方法。
The application of new mining method is benefic to avoiding mutual effect between steeply inclined near coal seams, improving production ability and recovery, forming canonical ventilation system.
新型采煤法的实施有利于避免急斜近距煤层开采的相互影响，提高生产能力和采出率，形成规范的通风系统。
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.
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。
The method of wall mining without pillars was first used in coal mine. In the metal mine it has not been used yet.
壁式无矿柱采矿首先是在煤矿推行，金属矿还未实现壁式无矿柱采矿。
This paper introduces the advantages and disadvantages of each coal mining method in the thick seam, and connecting with the features of Wangjialing Mine, selects the appropriate coal mining method.
介绍了各种厚煤层采煤方法的优缺点，并结合王家岭矿井特点，选择了合适的采煤方法。
Optimization of mining ventilation system has been one of the critical issues for coal mine's safe production, and should be solved by scientific and reasonable method.
矿井通风系统优化已经成为煤矿安全生产的一个关键问题，对其应有科学、合理的选择方法。
The method and measure to detect the fault and coal seam in construction of No 12 mining area in the Chen Mine, Yongcheng is introduced.
介绍了在永城车集矿12采区工程施工中，如何解决井下探测断层与煤层的方法与措施。
The stochastic assessment method was presented for voltage sags of power distribution system for coal mining.
提出了一种用于煤矿配电系统电压衰减的概率评估方法。
On the basis of probability integration method for flat coal seam, the paper discusses surface subsidence random medium model for mining inclined seams with an Angle of a.
在水平煤层概率积分法的基础上，讨论了开采倾角为口的倾斜煤层的地表下沉随机介质模型。
With the fault tree analysis method, the paper analyzes belt faults of the coal mining belt conveyor such as deviation, slipping, tear and breakage, focusing on the conveyor belt fire accident.
采用故障树分析法对煤矿井下带式输送机输送带的跑偏、打滑、撕裂、断带故障进行分析，重点对输送带着火事故进行分析。
The paper has quantitatively studied the evolution history of coalbed methane (CBM) of main coal seams in Liulin Mining Area of Hedong Coalfield by using numerical simulation method.
运用数值模拟方法对河东煤田柳林矿区主煤层煤层气地质演化史进行了定量模拟研究。
In solving the problem of deformation in surrounding rocks of the overlying coal entry caused by upper protective seam mining, reinforcing the surrounding rocks by grouting is a feasible method.
为了解决下保护层开采对上覆煤层巷道围岩变形的影响，采用注浆加固巷道围岩是一种可行的方法。
It is one of the important research projects in the field of controlling water-inrush from roof that the calculating method of water flowing fracture height caused by coal mining.
煤层开采所引发的上覆岩层导水断裂带高度的计算方法是矿井顶板水害防治中的重要研究课题之一。
It is one of the important research projects in the field of controlling water-inrush from roof that the calculating method of water flowing fracture height caused by coal mining.
煤层开采所引发的上覆岩层导水断裂带高度的计算方法是矿井顶板水害防治中的重要研究课题之一。
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