1)furrow pit深凹露天矿
1.Core technique of efficient hauling system and its application in furrow pit;深凹露天矿高效运输系统及关键技术探讨
2.The space effect of the furrow pit slope is analysed by elastic mechanics principle.在假定岩体为连续、均质、各向同性的弹性体,只承受自重应力和进行倒截头圆锥形开挖情况下,运用弹性力学原理对深凹露天矿边坡的空间效应进行分析,并推导出边坡环形岩石的临界滑动角α与岩石容重γ、摩擦系数f、岩石的环向弹性模量E_θ和开挖半径r之间的关系式。
3.By means of taking the circle rock on the trumpet slope as a mechanics model, analyzing its stress state using Coulomb's criterion and considering size effects of the rock mass, the relation function for stable slope angle, the angle of internal friction, the cohesion, the unit weight and the horizontal radius of furrow pit is derived in this paper.该式反应了深凹边坡的稳定性坡角可随着开挖深度增加而增大的规律 ,为采用减少深凹露天矿底部废石剥离量的凸曲线形边坡奠定了理论基础 ,也为确定其边坡的合理形状提供了基本方
英文短句/例句
1.Key Technology About Deep Mining of Surface Mine with Inclined Coal Seam倾斜煤层深凹露天矿深部开采关键技术研究
2.Improvement and Application of Draniage System of Deep Concave Mining of Qidashan Open-pit Mine齐大山深凹露天铁矿排水系统的改进与应用
3.STUDY ON SPATIAL PRINCIPLE OF STEEPING THE SLOPE ANGLE IN JINDUICHENG DEEP OPEN PIT金堆城凹陷露天矿加陡深部边坡角的空间原理研究
4.Study on Some Safety Problems of the Daye Iron Deep Open-pit-mine Transferring to Underground Mining;大冶铁矿深凹露天转地下开采的几个安全问题研究
5.Water seeping through underground layers to cause flooding is a serious problem in open pit mines.地下涌水引起水灾是凹陷露天矿的一个大问题。
6.Macroscopic Investigation of the Ground Pressure and Analysis of the Workings Deformation Law at a Transition from Deep Open-Pit to Underground Mining深凹露天转地下开采地压宏观调查及巷道变形规律分析
7.THE RESEARCH OF THE OPEN-PIT' ECONOMIC STRIPPING RATIO AND THE LAST LIMIT DEPTH;露天矿经济合理剥采比和最优开采深度的研究
8.Determine the final slope angle of deep realm steep working slope mining in PingZhuang West open pit mine露天矿深部境界陡帮开采最终帮坡角的确定
9.(of mines and mining) worked from the exposed surface.（矿或采矿）露天挖掘的。
10.extract (ore) from a strip-mine.从露天煤矿中开发矿石。
11.Analysis of Open-pit Mine in the Deep-hole Blasting Mass and Root Causes and Treatment浅析露天矿中深孔爆破大块和根底产生的原因及治理
12.Occurring Reason and Its Preventive Measure of Toe Rock in Deep Hole Bench Blasting in Ganchong Hillside Opencast Mine甘冲山坡露天矿台阶深孔爆破根底产生原因及预防措施
13.The Application of"New"Interval Charge Technology to Reduce the Consumption of Explosives about Deep-hole Blasting in Open-pit Mine“新型”间隔装药技术降低露天矿深孔爆破炸药单耗的应用
14.Strip mine is another form of surface mining.露天剥离矿是露天开采的又一种类型。
15.blasting survey of open pit露天矿爆破工作测量
16.glory-hole system露天放矿漏斗开采法
17.strip-borer drill露天矿水平炮眼钻机
18.A Study on the Application of Open Pit Mining Machine in Shengli No.1 Open-pit Mine露天采矿机在胜利一号露天矿的应用研究
相关短句/例句
Deep open pit深凹露天矿
1.In this Paper, wrter, based on investagting Several of domestil large deep open pit, and combined with interrelated material from home and abroad, makes andysis and summary of rational transportation form of deep open pit.通过对国内几个大型深凹露天矿的调查,并结合国内外有关资料,对深凹露天矿合理的运输方式进行了分析、综述。
3)Deep open-pit mining深凹露天
4)Deep open-pit mine深露天矿
5)deep strip coal mine深露天煤矿
6)deep open-pit coal mine深大型露天煤矿
1.Before and after ending of deep open-pit coal mine,geological disasters such as slope sliding and surface deformation probably occur.分析研究深大型露天煤矿闭坑前后可能发生滑坡、地表变形等地质灾害。
延伸阅读
深凹露天矿通风 深凹露天坑内的风流交换。分自然通风与人工通风。 自然通风 露天矿自然风流的结构、方向、状态和速度,决定着采场内有害气体的分布、大气污染的程度。露天矿自然风流分类的理论基础，是空气动力学的平行射流；风速l0(m/s)和空气垂直温度梯度▽t(℃/m)是形成自然通风方式的主要物理量；背风帮边坡角β>15°,顺风向地表开口水平长度L与垂直采深H之比L/H等几何参数，是决定各种自然通风方式的地形条件（见图）。在无风和弱风的天气里，采场内空气的运动，以对流式和逆增式最为明显。随着地表风力的加强，由热力通风转变为风力通风，形成直流式或复环流式通风。 人工通风 分：①热力式，利用燃油使空气加热以形成对流；②机械式，利用风机，在边帮开凿专用通风井，设通风管送风或抽风；③组合式，目前世界各国露天矿尚未实际采用人工通风。苏联采用过航空用的涡轮螺旋桨式和喷气式发动机作为露天矿通风的动力，但能源耗费大，产生噪声和柴油尾气等二次污染。深凹露天矿通风问题，迄今尚未解决。 露天采场内大气污染和烟尘防治措施 ①设计时，合理布设排土场和地面建筑物，使露天采掘的朝向和地表风向频率图相适应；②在穿孔机上装设除尘器，并采用湿式凿岩；③每天风速最大时进行爆破；④经常在工作面和公路上喷雾洒水；⑤对内燃机装设净化器；⑥实行白天两班作业，以避开最不利的逆增式通风；⑦安装防风、导风设施；⑧利用人工通风。
