煤柱,coal pillar
1)coal pillar煤柱
1.Dimension design ofcoal pillar with weak plane in strip mining;条带开采中含弱面的煤柱尺寸设计
2.Analysis on damaged width ofcoal pillar in strip extraction;条带开采煤柱破坏宽度计算分析
3.Study on influence of excavation sequence on the stability ofcoal pillar under final highwall with auger mining;到界边坡下螺旋钻机开采顺序对煤柱稳定性的影响研究
英文短句/例句
1.pillar of ground运输平巷上方的煤柱
2.Reinforcement Mechanism of Anchored Bolt for Coal Pillar and Analysis of Influence Factors of Pillar Strength煤柱锚杆加固机理与煤柱强度影响因素分析
3.Second Mining under Isolated Pillar Left by Wedge-pillar Mining Method刀柱复采跨隔离煤柱布置探索与实践
4.Study on the Reclimaning of Fault Waterproof Coal Pillar in Mafang Mine;马坊煤矿断层防水煤柱开采回收研究
5.Theoretical determination of the section coal pillar"s reserve-width in medium thick coal seam中厚煤层区段煤柱留设宽度理论确定
6.Theory and practice of integrated pillarless coal production and methane extraction in multiseams of low permeability低透气性煤层群无煤柱煤气共采理论与实践
7.Analysis on Stability of Coal Pillar in Goaf Area of No.11 Seam in Tangshangou Mine唐山沟煤矿11号煤层采空区煤柱稳定性分析
8.Principal Technology Study on Pillor Mining under the System of Room and Pillor Mining;房柱式开采体系煤柱回收关键技术研究
9.Research on Longwall Rigid Separating Pillar Mining Technology of Small Colliery in YSF Field;榆神府矿区小煤矿长壁布置刚性隔离煤柱房柱式开采研究
10.Study on Optimization Design and Destruct Monitoring Character of Coal Pillar in Longwall Remaining Coal Pillar Support Mining;长壁留煤柱支撑法开采煤柱优化设计及破坏的可监测性研究
11.Research on Reasonable Size of Steeply Dipping Seam Strip Coal Pillar under Village;村庄下大倾角煤层条带煤柱合理尺寸研究
12.A 3D Numerical Analysis of F_2 Fault Waterproof Pillar in Tao Yuan Coal Mine;桃园煤矿F_2断层防水煤柱留设的三维数值分析
13.Evaluation method for pillar stability during strip mining in multiple coal seams多煤层条带开采煤柱稳定性评价方法研究
14.Research on Reasonable Dimension of Protective Pillar for Cross-cutin Steeply Inclined Coal Seam急倾斜煤层石门保护煤柱合理尺寸研究
15.Failure Characteristic of Residual Coal Pillar and Its Influence on Downward Mining残留煤柱破坏特征及其对下部煤层开采影响
16.Simulation Experiment of Section Coal Pillar Parameter of Hongqinghe Coal Mine红庆河煤矿区段煤柱参数模拟实验研究
17.The discussion about waterproof mine columniationpillar width in Small coal mines bare area小煤窑采空区留设防水煤柱合理宽度的探讨
18.Numerical Simulation of Anchored Bolt Supporting for Roadway in Small Coal Pillar with Large Inclined Angle大倾角煤层小煤柱巷道锚杆支护数值模拟研究
相关短句/例句
pillar[英]["p?l?(r)][美]["p?l?]煤柱
1.Study on the chainpillar stability of the developing entry in longwall top-coal mining;综放开采采准巷道护巷煤柱稳定性研究
2.The relation between district raise in the multiple coal seams and itspillars;多煤层采区上山与煤柱之间的关系
3.Confirmation of reasonablepillar"s size in actual mining roadways;回采巷道合理煤柱尺寸的确定
3)coal column煤柱
4)protective coal pillar保护煤柱
1.Analytical model ofprotective coal pillar design for vertical section method;垂直剖面法保护煤柱设计的解析模型
2.Which is the concentrated expression of prediction model and its parameters,protective coal pillar designed method and its parameters.在深部开采条件下,结合地表沉陷的特点,总结分析了预测与控制存在的主要问题,表现在其预测模型、参数以及保护煤柱的留设方法和参数等方面。
5)strip coal pillar条带煤柱
1.The new technology of waste-filling replacement mining onstrip coal pillar;利用矸石充填置换开采条带煤柱的新技术
2.Whether thestrip coal pillar is stable or not is one of the key problems of strip-partial mining.应用突变理论建立了条带煤柱突变破坏失稳的尖点突变模型,导出了条带煤柱破坏失稳的充要条件表达式。
3.Its success or failure hinges on the long-term stability ofstrip coal pillar.条带开采是目前解决“三下”压煤的较为切合中国煤矿企业实际的方法之一 ,条带开采成败的关键是条带煤柱的长期稳定性。
6)optimization of coal pillar煤柱优化
延伸阅读
井筒煤柱开采随着开采深度的增加,立井井筒和工业广场煤柱(见矿柱) 的压煤量越来越大。过去井筒煤柱一般留而不采;有时在矿井报废前另建提运井巷进行开采,此法不经济;或采用巷道开采方法开采,回采率极低。自50年代起发展利用本井筒开采自身保安煤柱,并保持井筒功能的新技术,首先在德国和比利时试验成功。1960年以后,在波、苏、捷等国又得到进一步发展。特别是波兰,不仅开采了被井筒穿过的煤柱,而且开采了完全位于井筒之下的煤柱;不仅开采了生产矿井的井筒煤柱,而且对在建和新建成矿井的井筒煤柱也进行了开采试验。近十多年来,中国也进行了开采井筒煤柱的试验。如淮南矿区开采了急倾斜煤层井筒及工业广场煤柱。开采井筒煤柱时,井筒会发生下沉、偏斜、水平和垂直方向的拉伸和压缩变形,以及水平方向的位移和扭动。当井筒穿过含水地层时,如处理不当,还会发生井壁漏水现象。目前,波兰首创的"两步开采法"应用较广;第一步开采井筒周围的一小块煤层;第二步在全煤柱范围内用长工作面一次开采(见图)。方法有:①由煤柱一侧向另一侧回采;②由煤柱中心或稍偏离中心处向两侧回采;③由煤柱两侧向中心回采;④由煤柱一侧前后两个工作面跟随向另一侧回采。如井筒位于煤层一侧,可采用条带方法,并在井筒两侧进行等面积或体积的均衡开采,以减少井筒偏斜。开采井筒煤柱前,要对井壁及井筒装备采取防护措施:①挖去穿过所采煤层内的一段井壁,砌以防护木垛;②在罐道、梯子、排水管、压风管及电缆等管线中增设伸缩接头;③为减轻井壁的垂直变形,在所采煤层上、下一定距离的井壁上,应设置木砖压缩层。井筒煤柱范围内的地面建筑物和构筑物的防护方法,见建筑物下采煤。在井筒煤柱不能开采的情况下,有的国家在新井设计中采用加固井壁及工业广场地面建筑物的方法,以缩小深井筒和大工业广场的煤柱尺寸,减少压煤量。