安全煤柱,safe coal pillar
1)safe coal pillar安全煤柱
1.Study onsafe coal pillar design and sub-grade stability of freeway in unexploited coal zone;高速公路压煤区安全煤柱留设及其对路基稳定性的影响
2)safety pillars安全煤岩柱
1.On this basis,the height of "two zones"and the reasonable size ofsafety pillars were predicted.在此基础上,预计了"两带"高度,探讨了安全煤岩柱合理尺寸,使开采上限提高了30 m煤柱,解放呆滞煤量73。
英文短句/例句
1.Determination of waterproof rock pillar height with the top coal caving under sea海下综放开采防水安全煤岩柱厚度的确定
2.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
3.Research of Security Mining Technology for Coal-Pillar Below Railway Bridge;铁路桥下工业煤柱安全开采技术研究
4.The Main Problems Affecting Mine safety and Production in Coal Mine煤矿安全生产中的几个岩石力学问题
5.Study on Safe Mining of Island Coal and Roadway Maintenance Technology;孤岛煤柱安全开采及巷道维护技术研究
6.Research on Safety Effect of Limestone Water on Mining of Lower Seam Cluster in Liyan Coal Mine;里彦矿灰岩水对下组煤安全开采影响的研究
7.Research of Security Eeploiting Technology for Coal Below Corrosion Moisture Rock;溶蚀含水岩层下煤炭安全开采技术研究
8.Basic Research on Control of Surrounding Rock in Big Section Safety Mining in Steep Seams;急斜煤层大段高安全开采围岩控制基础研究
9.The Surface Subsidence Observation Analysis and Research of Safely Underwater Mining水体下安全采煤的地表岩移观测分析研究
10.SUBSIDED COLUMN OF KARST IN SIIENNANCOAL-FIELD AMD ITS WATER FLOWING CHARACTERISTICS沈南煤田岩溶陷落柱及其导水性特点
11.Study on Reasonable Width of Coal and Rock Pillar under Thick Aquiferous Loose Bed;厚含水松散层下煤岩柱合理留设研究
12.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
13.Stability Analysis of Rock Pillar in the Uncovering Coal Process of Highway Tunnel Though Coal Seam公路穿煤隧道揭煤施工过程中岩柱稳定性分析
14.Study on Influence of Limestone Water of TaiyuanGroup on Safety Mining No.10 Coal Seam and Determination of Water Bursting Sources in Liudian Coal Mine;刘店煤矿太原组灰岩水对10煤层安全开采的影响及突水水源判别研究
15.Study on Influence of Limestone Water of Taiyuan Group on Safety Mining No.10 Coal Seam and Determination of Water Bursting Sources in Yangliu Coal Mine杨柳煤矿太原组灰岩水对10煤层安全开采的影响及突水水源判别研究
16.Characteristics of Coal Pillar"s Concentrated Load and Its Influence on Surrounding Rock Stress of Roadway煤柱集中载荷特征及其对巷道围岩应力的影响
17.Concentrate loading of pillar and its effect on the tunnel surrounding rock stress of differ location煤柱集中载荷对不同错距巷道围岩应力的影响
18.Study on Extraction Security of No.3 Coal Seam in West Wing of Baoan Coalmine保安煤矿西翼3煤层开采安全性研究
相关短句/例句
safety pillars安全煤岩柱
1.On this basis,the height of "two zones"and the reasonable size ofsafety pillars were predicted.在此基础上,预计了"两带"高度,探讨了安全煤岩柱合理尺寸,使开采上限提高了30 m煤柱,解放呆滞煤量73。
3)waterproof rock pillar防水安全煤岩柱
1.Determination ofwaterproof rock pillar height with the top coal caving under sea海下综放开采防水安全煤岩柱厚度的确定
4)checking safety factor of coalblock煤柱安全系数检核
5)security coal pillar保安煤柱
1.The cause of house crack determined bysecurity coal pillar of village.房屋裂缝是否由煤矿采煤引起,主要是看采空区是否进入村庄保安煤柱。
6)coal mine security煤矿安全
1.Research aboutcoal mine security management based on spatial data mining;基于空间数据挖掘的煤矿安全管理的研究
2.This article analyzed the reasons for the frequencycoal mine security accidents from objective and subjective separately in view ofcoal mine security situation in China,and proposed the countermeasures.本文针对我国煤矿安全生产形势,分别从客观和主观两方面详细地剖析了煤矿安全事故频发的原因,并提出了对策,研究结果对煤矿安全生产具有一定的指导意义。
3.In this paper, consistency between the model ofcoal mine security and the model of fuzzy control is analyzed under the consistence of data input and data output.在有输入和输出数据的前提下,分析了煤矿安全的模型与模糊控制模型的一致性;介绍了煤矿安全评价中检查表法的基本概念及其在本次工作中的作用。
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。
