1)coal pillar width煤柱宽度
1.the Study and apply of the coal pillar width Parameter in along stull tunnel;沿空巷道煤柱宽度参数的研究与应用
2.Influenced of coal pillar width on deformation and fracture of gateway surrounding rocks in fully mechanized top-coal caving mining;煤柱宽度对综放回采巷道围岩破坏场影响分析
3.Effect of coal pillar width on the stress distribution law of surrounding rocks in fully mechanized top-coal caving mining face;煤柱宽度对综放面围岩应力分布规律影响
英文短句/例句
1.Influence of Coal Strength Coefficient on Width of Protective Coal Pillar煤的强度系数对井巷保护煤柱宽度影响分析
2.Study on the Stability of Rock Surrounding Gateway with Different Coal-pillar Widths煤柱宽度对巷道围岩稳定性影响分析
3.Design of rational width of coal pillars in gateways in gently inclined shallow coal seams浅埋缓斜煤层回采巷道合理煤柱宽度设计
4.The paper introduces a method to use the observation technology to ascertain the width of stage coal pillar by an example.通过一个实例介绍了用实测技术确定区段煤柱宽度的方法。
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.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
7.Calculation and evaluation on the safe width of fault waterpro of coal (rock) pillar断层防水煤(岩)柱安全宽度的计算与评价
8.Analysis on Numerical Simulation of Rational Width for Coal Pillar in Different Sections of Fully Mechanized Coal Mining Face in Seam Island孤岛综采面区段煤柱合理宽度的数值模拟分析
9.Reasonable Width of Waterproof Coal Pillar Under the Condition of Different Fault Dip Angles不同断层倾角条件下防水煤柱合理宽度的研究
10.Numerical Simulation and Calculation on Plastic Zone Width of Coal Pillar for Strip Mining条带开采煤柱塑性区宽度的数值模拟与计算
11.High-precision microseismic monitoring system to reasonable width of segment coal pillar in extra-thick coal seam fully mechanized top-coal caving mining特厚煤层综放工作面区段煤柱合理宽度的微地震监测
12.Study of Surrounding Rock Structure and Deformation Mechanism of Roadway under Different Widths of Section Coal Pillar;不同宽度区段煤柱巷道围岩结构及变形机理研究
13.Study on Stress State of Wide Strip Pillar in Gobs of Deep Mines深井采空区宽条带煤柱受力状态研究
14.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
15.EXPERIMENTAL RESEARCH ON CRACK WIDTH ON REINFORCED CONCRETE BIAS COLUMN WITH HRBF500HRBF500钢筋混凝土偏压柱裂缝宽度试验
16.RESEARCH ON THE APPROACH OF HIGH ACCURACY AND WIDE BAND SEISMIC ACQUISITION OF COAL MINE煤炭宽带高精度地震采集方法的研究
17.The effects of stress on fracture and permeability in coal bed应力对煤岩裂缝宽度及渗透率的影响
18.Experimental Study of Calculating Width of Equivalent Beam and Interior Column Joints for Slab-column Structures Subjected to Horizontal Forces;水平力作用下板柱结构等代梁计算宽度和中柱节点的试验研究
相关短句/例句
Width of coal pillar煤柱宽度
1.Design of rational width of coal pillars in gateways in gently inclined shallow coal seams浅埋缓斜煤层回采巷道合理煤柱宽度设计
3)coal-pillar width煤柱宽度
1.Combined with classically shallow coal seam, this paper gave out the reasonable coal-pillar width of mining gates of mainly mining coal seam in Yujialiang, Bulianta and Daliuta mines by observing abutment pressure distribution of coal-pillar.针对神东矿区的典型浅埋煤层条件,用现场实测煤柱支承压力分布方法,分析给出了榆家梁矿、补连塔矿和大柳塔矿主采煤层回采巷道的合理煤柱宽度范围,对今后回采巷道布置、煤柱宽度以及巷道支护设计,具有工程实用价值和决策指导作用。
4)width of narrow pillar窄煤柱宽度
5)The optimized Width of Narrow Coal Pillar窄煤柱最佳宽度
6)width of chain pillar护巷煤柱宽度
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。
