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1)  sublevel caving in bottom slice
下分层综放开采
1.
Based on the field measurement and theoretical analysis, the model of strata structure over the coal face is established with fully mechanized sublevel caving in bottom slice.
在大量现场实测与理论研究的基础上,建立了下分层综放开采的覆岩结构模型,并对大、小结构的稳定性及其对矿压显现的影响进行了分析。
2)  comprehensive mechanized zonal mining with moveable-filling
综放分层开采
3)  sub-level full-mechanized caving mining
分层综放开采
1.
Based on geological conditions of Huating Colliery,this paper applied numerical simulation software to optimizing coal pillar design and roadway layout of sub-level full-mechanized caving mining extremely thick coal seam.
在华亭矿地质条件基础上,利用数值模拟软件对特厚煤层分层综放开采煤柱的留设和分层巷道布置进行优化计算,得出了较优的区段煤柱尺寸和分层巷道的布置方式。
4)  heddle down with layers puts
下分层综放
5)  full-mechanized caving mining
综放开采
1.
Aiming at the characteristics of large falling height and complex falling configuration in full-mechanized caving mining,three-dimensional distinct element code-3DEC is employed to simulate falling rules of surrounding rock in gob,movement direction of rock beam and possible dynamic loading brought by it with different collapse geometry parameters in full-mechanized caving mining face.
基于综放开采,采空区冒落高度大、冒落形态复杂的特征,采用三维离散元程序3DEC模拟分析了综放工作面岩层不同垮断几何参数时的采空区覆岩冒落规律、岩梁运动趋势及其对采场可能带来的动载荷。
2.
According to Datong "dual hard" full-mechanized caving mining conditions,the practice of fire prevention and extinguishment technology by optimizing the ventilation systems,balancing gas pressure,spraying frog in working face,injecting nitrogen into coal seam,and grouting into gob in full-mechanized caving mining face was discussed.
针对大同两硬条件综放开采的特点,论述了利用通风系统优化、均压防灭火、工作面喷雾阻化、注氮惰化、采空区注浆等综合防灭火技术防治自然发火的实践,对其他矿区有一定的参考价值。
3.
Based on in-situ observation of underground pressure in full-mechanized caving mining coal seam with large dip angle and 1000m deep in Zhaogezhuang Colliery,Kailuan Group,the behavior of underground pressure of mining face with large dip angle is fully analyzed in this paper.
结合开滦赵各庄矿千米深部大倾角综采放顶煤的开采,通过现场矿压观测,较全面地分析研究了大倾角工作面的矿压显现规律,提出了影响大倾角煤层开采矿压的因素及大倾角工作面综放开采矿压显现的新特征。
6)  fully mechanized top-coal caving
综放开采
1.
in the process of determining the length of mining face which influences the effect of mining,many factors influence the determination of the length for fully mechanized top-coal caving face.
为了解决高瓦斯厚煤层综放开采合理工作面长度的确定问题,采用理论分析和现场实验的方法,在对高瓦斯厚煤层综放工作面长度的多种因素分析的基础上,对以工作面通风能力校核工作面长度的经验公式进行了比较分析,提出了适合综放开采的以工作面通风能力确定工作面长度的校核公式。
2.
In this paper,the mechanical field characteristics of fully mechanized top-coal caving(FMTC) laneway surrounding rock are researched systematacially based on the results of in-situ measurement combined with numerical simulation in different mining thickness.
该研究成果为采场巷道合理布置与维护及综放开采动力灾害的防治,提供了理论依据。
补充资料:分层开采技术
      油井中有多套层系合采时,由于油层之间的压力、油层物理性质、原油性质等差异,往往互相干扰,使部分油层不能发挥应有的作用。为减少或消除层间干扰,应分层开采,包括分层采油、分层注水及其配套技术。
  
  分层采油 单管分采 在开采多油层的生产井内,用封隔器将油层分隔成若干层段,用配产器来减少层间干扰,为便于井下作业和油井管理,在一口井中,一般可分 3~4个层段进行分层采油(图1)。
  
  
  多管分采 在一口井内下几根油管,一根油管开采一个层段,用封隔器将层段分隔开。此法可消除层间干扰,但在一口井中下的油管数要受井眼尺寸的限制,不能太多,而且井下工具和井口装置因管多而复杂化,通常多采用双油管分采两层。在抽油井中有时也进行分层采油。
  
  分层注水 用封隔器之间的配水器调节一口注水井中各层段的注水量,使各层基本上能按分层配水量定量注水。调整注水井的吸水剖面,控制超注层的注水量、增加欠注层的注水量,使各层中的水线推进比较均匀。通常分层注水为 3~5个层段(图2)。层系比较简单时,可下一级封隔器,从油管和套管各注一层段。有时在一口井中也可下双油管,一组油管注一段。
  
  
  分层测试 分层采油前,要测试分层压力、产量和含水率,根据测试的资料来确定分采的层段和对各层段的调节措施。分层采油过程中,也要用测试仪器检查效果。常用的仪器有压力计、产量计和含水测定计。分层注水前,要用放射性同位素载体法或流量计测吸水剖面,根据测试的资料确定分注的层段以及控制和加强注水层段。分层注水过程中用同样测试方法定期检查。
  
  中国在60年代开发大庆油田的实践中,形成了一整套分层采油技术,并已在各油田推广使用,对延长无水开采期和提高采收率起了重要作用(见注水开采)。
  

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