1)underground mine地下矿井
1.Application of reliability analysis in some underground mine;可靠度分析在某地下矿井中的应用
2)groundwater system of mine矿井地下水系统
3)Underground well井下矿井
4)coal mine underground煤矿井下
1.Study on scheme of IF mobile communication in coal mine underground;煤矿井下中频移动通信技术方案研究
2.The status of mobile communication in coal mine underground is introduced, the difficult technical problems including laneway infection for wireless transmission and weak signal reception and noise interference are analyzed, and ways to solve these problems are proposed.介绍了我国煤矿井下移动通信现状,分析了技术上的难题-巷道对无线传输的影响、弱信号接收和井下环境噪声干扰,提出了解决途径。
3.To solve the problem of frequent over-grade trip of fast short-circuit protection in high voltage power supply system of coal mine underground,a scheme of adaptive protection system based on independent substation was proposed.针对煤矿井下高压供电系统速断保护经常越级跳闸的问题,提出了一种基于独立分站的自适应保护系统方案。
英文短句/例句
1.The fair use for trackless underground coal vehicle煤矿井下无轨胶轮运煤车的合理使用
2.Power Supply Plan for Thin-layers in Fully-mechanized Mining煤矿井下薄煤层综采工作面供电方案
3.Location, tracking and enquiry management for coal mine.煤矿井下人员的定位、踪、询管理。
4.TREATMENT OF ACIDIC WASTEWATER FROM COAL MINE BY AERATION NEUTRALIZATION PROCESS用曝气-中和法处理煤矿井下酸性废水
5.Research on Braking System for the Coal Mine Underground Explosion-proof Convey Vehicles;煤矿井下防爆运输车制动系统的研究
6.Personal Position System Used in Coal Mine Based on RFID;基于RFID的煤矿井下人员定位系统
7.The Modeling and Implementation of Mining Safety Information System;煤矿井下安全信息系统的建模与实现
8.A Study of Miner Vehicle Control Using RFID;RFID应用在煤矿井下机车调度的研究
9.Study on Electronic Map System for Mine Based on GIS基于GIS煤矿井下电子地图系统的研究
10.Sensor network of underground mine electric power line base on LonWorks基于LonWorks的煤矿井下电力线传感器网络
11.Application of ARM-Linux Embedded System Underground MineARM-Linux嵌入式系统在煤矿井下的应用
12.Practice of Reducing Pollution Discharge and Utilizing Water Resource in Underground Mine煤矿井下水资源合理利用与减排实践
13.Centrolized Control System of Underground Overhead Manned Cart煤矿井下架空人车集中控制系统设计
14.Design Research of Multi-section Crawler-type Underground Coal Mine Search Robot多节履带式煤矿井下搜索机器人设计
15.Construction of Coal Mine Underground Rapid Continuous Carrying People System煤矿井下快速连续化运人系统的建设
16.Application of Leakage Mobile Communication Technology in Collieries泄漏移动通信技术在煤矿井下的应用
17.Control of Exhaust Pollutant of Flame Proof Diesel Engine in Underground Coal Mmines煤矿井下防爆柴油机排气污染的控制
18.Application of membrane filter press in the underground NO.3 coal mine of Jining隔膜式压滤机在济三煤矿井下的应用
相关短句/例句
groundwater system of mine矿井地下水系统
3)Underground well井下矿井
4)coal mine underground煤矿井下
1.Study on scheme of IF mobile communication in coal mine underground;煤矿井下中频移动通信技术方案研究
2.The status of mobile communication in coal mine underground is introduced, the difficult technical problems including laneway infection for wireless transmission and weak signal reception and noise interference are analyzed, and ways to solve these problems are proposed.介绍了我国煤矿井下移动通信现状,分析了技术上的难题-巷道对无线传输的影响、弱信号接收和井下环境噪声干扰,提出了解决途径。
3.To solve the problem of frequent over-grade trip of fast short-circuit protection in high voltage power supply system of coal mine underground,a scheme of adaptive protection system based on independent substation was proposed.针对煤矿井下高压供电系统速断保护经常越级跳闸的问题,提出了一种基于独立分站的自适应保护系统方案。
5)underground mine井下矿
1.The characteristics and problems of different persons appearing in safe operation management of underground mine are analyzed.针对构成井下矿山整体中的不同人员在安全生产管理中所反映出的问题加以分析,采取不同的管理方法,以保证井下矿山安全生产管理有序高效地进行。
2.Based on measurement and analysis of blasting vibration of surface mine and underground mine, all-round and scientific criteria of blasti ng safety are suggested.通过对露天矿和井下矿的爆破振动的测试分析 ,提出了比较全面、科学的爆破振动安全判据建议标准。
3.The mining system of an underground mine is a large and complicated one that consumes huge amount of water.利用井下矿地下涌水作为矿山生产用水水源 ,在矿井排水与生产供水之间建立循环系统 ,不但合理地利用了水资源 ,节约了矿山生产新水给水 ,而且减少了大量投资 ,使矿山生产成本也随之大幅度降低 ,收到了很好的效益。
6)underground mine煤矿井下
1.Penetration ability of radar wave is an important index for evaluation of application of radar in underground mine.雷达波的穿透能力大小是衡量雷达在矿井中应用效果好坏的重要指标，它取决于介质的电磁波衰减系数，衰减系数越小，雷达波的穿透能力越大，衰减系数随着介质电导率的增大而增大，煤矿井下介质主要为低电导率的煤层、砂岩、页岩、灰岩，它们的衰减系数较小，雷达波在这些介质中穿透能力较大。
延伸阅读
高山地区矿井通风高山地区矿井通风mine ventilation in high elevation area gaoshan diqu kuangjing tongfeng高山地区矿井通风(mine ventilation in highelevation area)向海拔千米以上地区的矿井通人新鲜空气的过程。空气温度、大气压力随着海拔高度而变化。海拔每上升100m，气温下降约0.65C，气压下降约0.93325kPa。不同海拔的气温、大气压力可按下式计算: th~t。一月△H/100 P卜~P，一a△H/100式中t、、P。分别为在海拔高度为H米处的气温，C和气压，kPa;ta、P。为附近气象台站的年平均气温，C和年平均气压，kPa;△H为海拔高度为H处与附近气象台站间的高度差，m;口为气温梯度，夕一。，5一0.7C/10om;a为气压梯度，a~6一8(0.799932一1 .066576)kPa/100rn。 随着海拔高度的增加，空气重率则降低。即y一y0(1一H/443。。)5256。式中孔为标准状态下的空气重率，kg/m3。空气重率的降低引起通风风阻、通风阻力、扇风机的全压以及扇风机电机输人功率下降，但风量保持恒定，因此，扇风机效率不随海拔高度变化。以上参数可按下式计算:R一KrR。;h二Krho;H一KrH、Q=Q。;N=K:N。;7=夕。，式中R。、h。、H。。、Q。、N。、军。为标准状态下的风阻、阻力、全压、风量、功率和效率;R、h、H、Q、N、7为海拔高度为H处的风阻、阻力、全压、风量、功率和效率。 、r一哥一(‘一H/“300，525弓式中K，为高程校正系数。 因此，在通风设计时，不需要进行高程校正，高山矿井扇风机在实际运转时，其风量不变，风压降低，其值为设计风压乘以高程校正系数K二。 (赵梓成)
