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坚硬煤层
相关语句
  hard seam
     Study and Trial of Mechanized Caving Mining in Hard Seam
     坚硬煤层综放开采试验研究
短句来源
     Fully mechanized longwall top coal caving mining technology for special thick and hard seam and its application
     特厚坚硬煤层综放开采技术及其应用研究
短句来源
     Based on analyzing the major problems and potential safety hazards,some measures and suggestions are put forward which is to reinforce researches on green mining techniques,such as optimization of ventilation system,gas drawing,comprehensive fire-preventing of spontaneously combustible seam,the safety pre-splitting of hard seam,the monitoring and analyzing of gas explosion risks,etc.
     本文在分析该地区煤炭安全生产中存在问题、重大安全隐患及其产生原因的基础上,提出了一些具有可操作性、针对性的措施与建议,最后指出西北矿区今后应重点进行矿井通风系统优化技术、瓦斯综合高效抽采技术、易自燃煤层综合防灭火技术、坚硬煤层综放开采顶煤安全预裂技术、矿井瓦斯爆炸危险性监控和分析技术以及西北矿区“绿色开采技术”等科技攻关.
短句来源
     Fully mechanized coal caving mining technology with conditions of hard roof and hard seam in Datong Mining Area
     大同矿区坚硬顶板与坚硬煤层条件下综放开采
短句来源
     Key technology for large fully mechanized caving mining in hard seam
     坚硬煤层大放高综放开采关键技术
短句来源
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  hard coal seam
     The paper introduces how to select coal plow in accordance with measuring cutting resistance of the machine in hard coal seam and analysing the result.
     以坚硬煤层截割阻力的测试,结合全自动刨煤机在大同煤矿集团公司晋华宫矿坚硬煤层成功开采之例,进行坚硬煤层截割阻力的测试和可刨性效果分析,选择合理的刨煤机。
短句来源
     Cutting Resistance Test of Hard Coal Seam and its Difficulty Degree of Digging Research
     坚硬煤层截割阻力的测试和可刨性研究
短句来源
     After analyzing fully-mechanized sub-level caving technology in the case of special thick and hard coal seam, it is presented that the increment of cavability of hard roof coal and available control of gas are the main difficult technology problem to be faced.
     通过对特厚坚硬煤层综放开采技术的系统分析,指出提高坚硬顶煤的冒放性和瓦斯的综合治理是该条件下综放开采所面临的主要技术难题。
短句来源
     Fully mechanized high top coal caving mining technology in hard coal seam of Honghui No. 1 Mine
     红会一矿坚硬煤层大放高综采放顶煤开采技术
短句来源
     Selecting Coal Plow by Measuring Cutting Resistance in Hard Coal Seam
     测试坚硬煤层截割阻力合理选型刨煤机
短句来源
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  hard coal
     Calculation of water pressure of precracking hard coal by water infusion
     坚硬煤层注水预裂水压力计算
短句来源
     The paper introduces how to select coal plow in accordance with measuring cutting resistance of the machine in hard coal seam and analysing the result.
     以坚硬煤层截割阻力的测试,结合全自动刨煤机在大同煤矿集团公司晋华宫矿坚硬煤层成功开采之例,进行坚硬煤层截割阻力的测试和可刨性效果分析,选择合理的刨煤机。
短句来源
     Analysis of the First Caving of Roof Sections in Hard Coal Layers
     坚硬煤层顶板段初次放顶分析
短句来源
     Cutting Resistance Test of Hard Coal Seam and its Difficulty Degree of Digging Research
     坚硬煤层截割阻力的测试和可刨性研究
短句来源
     In terms of the special situation in Yun Gang Mine of hard roof, hard coal layer, concentrated gas, easy spontaneous combustion very thick coal layer, this article deals with the arrangement of tunnels in comprehensively mining top coal, weakening of roof and top coal, prevention of gas and combustion.
     针对云冈矿坚硬顶板、坚硬煤层、高瓦斯、易自燃特厚煤层的特殊条件综采放顶煤开采的巷道布置、顶板与顶煤的弱化、瓦斯与自然发火的防治等进行了探讨。
短句来源
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  “坚硬煤层”译为未确定词的双语例句
     It's a new way for mechanization mining in harder seam.
     它为解决较坚硬煤层中机械化开采开辟了有效的新技术途径
短句来源
     The key of fully mechanized caving safely and efficiently in hard thick seam is to control the top-coal breaking process effectively, the technology of the top-coal pre-blast weakening is a valid method to resolve this problem.
     坚硬煤层综放工作面安全、高效开采的关键问题就是要有效调控顶煤的破坏过程,顶煤预先爆破弱化技术是解决这一问题的有效方法。
短句来源
     The top-coal system of fully mechanized caving face in hard thick seam is a continuous and dynamic system on time and space, the pre-weakening is a important part composing the whole breaking process of the top-coal, and the essential to pre-weakening the hard top-coal is artificially and beforehand to make its whole strength lower.
     坚硬煤层综放采场顶煤系统在时间和空间上具有连续动态性,顶煤预先弱化是坚硬顶煤破坏全过程的重要组成部分,顶煤预先弱化的实质就是人为地预先使其整体强度降低。
短句来源
     Test of pre-blasting top coal in fully-mechanized top-coal caving mining face with hard roof
     坚硬煤层放顶煤综采顶煤预爆破试验研究
短句来源
     Talking about deep hole high prussure water injection in harder coal seam
     浅析较坚硬煤层深孔高压注水
短句来源
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  hard coal
Chaotic behaviour of acoustic emission induced in hard coal by gas sorption-desorption
      
The microbial degradation of hard coal implies the cleavage of diaryl ether linkages in the coal macromolecule.
      
A new method for the determination of organic and pyritic sulfur in hard coal is presented.
      
4301: 935 cases), chronic obstructive bronchitis and/or emphysema in hard coal miners (occupational disease no.
      
The first represents the underground hard coal mining region in the Czech part of the Upper Silesian Coal Basin.
      
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Based on the spot observations,this paper analyzes the strata behaviors of fully mechanized face under the double hard conditions.With the help of regression analysis,the relationship between setting load and time weighted maximum resistance of support has obtained.Thus,a way of determining the reasonable working resistance of support is given.

在现场观测基础上,分析了两硬(坚硬顶板,坚硬煤层)综放采场来压情况;运用回归分析,得出支架初撑力和循环最大工作阻力间的关系,由此给出确定放顶煤支架合理工作阻力的方法。

By methods of observing deep base point and theoretic analyses, this paper reveals the behavior law and the caving structure of top coal in seam and roof in fully mechanized mining method with sublevel caving under the conditions of hard roof and hard coal seam.The conclusions have instructive meaning to production.

用深基点观测和理论分析的方法揭示坚硬顶板、坚硬煤层条件下综放开采顶煤顶板活动规律及其冒放结构,结论对生产有现实的指导意义。

Abstract Base on a successful caving technology applied in a medium hard seam in early 1990's, this paper introduced that Shanxi Mining College had a successful application of a caving mining method in No 133062 coal mining face with a seam hardness of f = 3 5 to 4 5 in Gushuyuan Mine of Jincheng Coal Mine Administration in 1996 This caving mining method adopted rational mining parameters The mining and caving rate was 0 9 to 1 17 One cut and one caving method was applied to the caving technique...

Abstract Base on a successful caving technology applied in a medium hard seam in early 1990's, this paper introduced that Shanxi Mining College had a successful application of a caving mining method in No 133062 coal mining face with a seam hardness of f = 3 5 to 4 5 in Gushuyuan Mine of Jincheng Coal Mine Administration in 1996 This caving mining method adopted rational mining parameters The mining and caving rate was 0 9 to 1 17 One cut and one caving method was applied to the caving technique and one caving distance was rationally 0 5 to 0 6 m A roof control distance of the hydraulic powered support was 4 8 to 5 4 m The working resistance of the hydraulic support was 5,000 KN A moving tail beam of the support can greatly improve a coal caving rate With the rational selections of the parameters and mining method, the caving rate of the top seam was 79 1 % and the coal recovery rate of the face was 90 5 % The average production per month was 131,600 t and the mining rate per person per shift was 49 5 %

介绍古书院矿13306综放面的成功试验,在相似模拟、数值分析、矿压观测等研究基础上,系统阐述了坚硬煤层条件下,注重综放工艺参数的合理选择,裂隙方位与工作面的合理匹配,改进一刀一放的放煤方式等技术,是改善硬煤冒放性、提高放出率的重要途径。

 
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