小煤柱,small pillar
1)small pillar小煤柱
1.Numerical simulation ofsmall pillar stress concentration areas borehole pressure relief effect小煤柱应力集中区钻孔卸压效果的数值模拟
2.Under the condlition of medium-thick seam composite roof,thesmall pillars size and roadways support parameters are reasonably determined.在中厚煤层复合顶板条件下,合理确定小煤柱尺寸及巷道支护参数,可提高煤炭回收率,保证巷道正常掘进和在服务期间内的使用。
3.In view of the conditions tunnelingsmall pillar along the goaf,introduces the situation of using anchor cable net and uity supporting and analyzes the application effect.针对沿空掘进小煤柱巷道的条件,介绍应用锚索网+工字钢联合支护的情况,分析了应用效果。
英文短句/例句
1.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
2.Application of Grouting Cable Anchor in Small Coal Pillar Roadways注浆锚索在小煤柱巷道群加固工程中的应用
3.To reinforce the large-span and small-coal-pillar roadway by prestressed injection and cable anchors小煤柱大跨度巷道群预应力注浆锚索加固工程
4.Mechanism of Narrow Pillar Protecting Roadway and Support Technology of Gob-Side Entry in Deep Mine深井沿空巷道小煤柱护巷机理及支护技术
5.Application of Pressure Bolting Supporter Under the Influence of Small Coal Mining Pillar Roadway采动影响下小煤柱巷道让压锚杆支护的应用
6.Support Technology of Small Coal Pillar Goaf-side Gateway for Fully Mechanized Top Coal Caving Mining Face in Deep Mine深部综放工作面小煤柱沿空巷道支护技术
7.Numerical simulation of small pillar stress concentration areas borehole pressure relief effect小煤柱应力集中区钻孔卸压效果的数值模拟
8.The Law of Ground Pressure and Itself Supporting of the Lane That the Narrow and Small Pillar Protected;窄小煤柱护巷的矿压显现规律及其支护技术研究
9.Gas Control in the Upper Corner of Working Face under Hard Roof坚硬顶板条件下大采高小煤柱回采工作面上隅角瓦斯治理
10.Numerical Simulation Research of Pressure Relief Mechanism of Borehole of Small Pillar Stress Concentrated Areas小煤柱应力集中区钻孔卸压机理的数值模拟研究
11.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
12.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
13.Mine Pillars Mining with Small-scale Coal Mining Approach in Small Coal Mine小型煤矿采用小进路采矿法的矿柱回采
14.Study on Pillars Stability by Keeping Water in Strip Mining for Small and Medium-sized Mines in Northern Shanxi Province陕北中小矿井条带保水开采煤柱稳定性研究
15.The Research on Interpretation of Fault and Collapsed Pole by 3D Seismic Method with High Distinguishability in Mining Area高分辨率三维地震在煤矿采区解释小断层和陷落柱的研究
16.pillar of ground运输平巷上方的煤柱
17.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
18.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
相关短句/例句
small coal pillar小煤柱
1.Aimed at the severe deformation of surrounding rock of gob-side entry on insular face or the unstable ofsmall coal pillar induced by dynamic pressure in mining,the stability of the gob-side entry withsmall coal pillar on insular face was studied by numerical calculation,physical simulation experiment and in-situ test.针对煤矿孤岛面沿空巷道在采矿动压的作用下巷道围岩出现大变形或小煤柱失稳的现象,通过数值计算、物理模拟实验、现场工业性试验等方法对孤岛面小煤柱沿空巷道稳定性进行了系统的研究。
2.This paper introduces dynamic information method undersmall coal pillar and large over-the-roadway roadway groups influnenced by full extraction and structure,building large model simulates diffierent reinforcing scheme and supporting parameter,the best scheme is obtained,through analyzing rock pressure,this method is rational and reliable.介绍了小煤柱大跨度巷道群在受到构造和采动双重影响下,应用动态信息设计法,建立大模型模拟不同加固方案与支护参数,从而选择出最佳方案,同时分析了矿压监测结果,显示该加固方案具有较高的合理性和可靠性。
3.This paper introduces new technology with minor diameter resin grouting combined anchor pretensional cable anchor undersmall coal pillar,structure and mining-induced in S520 main haulageway of Changcun coal mine,it analyzes reinforcing results of roadway and evaluates technical economical results.常村煤矿S52 0运输大巷在小煤柱、构造和采动多重影响条件下 ,采用小直径树脂注浆联合锚固预应力锚索新技术 ;分析和评价了巷道加固效果和技术经济效
3)narrow and small coal pillar窄小煤柱
1.During the period of caving coal mining,the coal tunnel pressure is greater with leavingnarrow and small coal pillars,the support of driving tunnels along goaf is more difficult during the period of mining.在放顶煤开采过程中,留窄小煤柱全煤巷道矿压较大,沿空掘巷在回采过程中支护较为困难,运输顺槽支护方式的确定更为显得重要。
4)future small coal pillar留小煤柱
1.Based on the analysis of the bolting with wire pillar supporting technology used infuture small coal pillar along gob-side driving 8 228 wind entry of Taoyuan Coal Mine,consider that the supporting technology is workable,and has definite social and economic benefit.通过对桃园煤矿 82 2 8风巷预留小煤柱沿空掘巷锚笆柱支护技术的分析 ,认为该支护技术是可行的 ,具有一定的社会经济效益。
5)dimension of small pillar小煤柱尺寸
6)narrow pillar drift小煤柱护巷
1.According to the action of cantilever rock seam on the overly- ing strata of coal body, the paper analyses the distribution rule of abutment pressure and the theoretical basis ofnarrow pillar drift and exploies the sup- port type of drifts in inclined and steep inclined coal seam under the condi- tion ofnarrow pillar drift.从悬伸岩层对煤体上覆岩层作用的角度,分析了支承压力分布规律的形成和小煤柱护巷的理论依据,并对小煤柱护巷条件下急倾斜与倾斜煤层中巷道的支护方式进行了一定程度的探讨。
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。
