1)mine drainage矿井排水
1.The influential factors of calculation error for groundwater table are discussed by using the iteration method to find solution of numerical model in the mine drainage forecast of deep drawdown.本文讨论了大降深矿井排水预测中 ,利用迭代法求解数值模型时 ,地下水位计算误差的影响因素。
英文短句/例句
1.Application of Mine Well Draining and Controling System in Zhangji Coal Mine矿井排水控制系统在张集煤矿的应用
2.Fuzzy comprehensive safety assessment of mine drainage system矿井排水系统安全性的模糊综合评价
3.Application of Mine Pit Draining Water in 2×660MW Supercritical Units in Baoshan Power Plant矿井排水在宝山电厂2×660MW超临界机组中的应用
4.Mine Pump Selection and Performance Curve Drawing Based on ASP Technology基于ASP技术的矿井排水泵在线选型及性能曲线绘制
5.Experimental Study on the Utilization Technology of Drainage Pit Mine Water of HaiZhou Open Pit;海州矿排水坑矿井水资源化利用技术实验研究
6.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
7.Design and analysis of water storage-drainage system in abandoned roadway of mine矿井废弃巷道蓄排水系统设计与分析
8.Design of Mine Automatic Drainage System Based on PLC基于PLC的矿井自动排水系统设计
9.Analysis to the circulate efficiency of the mineral well drains system and tube net矿井主排水系统管网运行效率的分析
10.Technology of form drainage gas in high salinity formation产高矿化度地层水气井泡沫排水采气技术
11.Application of LabVIEW in Coal Mine Drainage Monitoring System;LabVIEW技术在煤矿井下排水监控系统中的应用
12.The Research and Development of the Coal Mine Drainage Automatic Control System;煤矿井下排水自动控制系统的研究与开发
13.The Application of Frequency Conversion Technique on the Main Drainning System of Old Coal Pit;变频技术在老式矿井主排水系统技改中的应用
14.Application of automation monitoring system in underground mine drainage井下排水自动化监控系统在矿山的应用
15.PLC Reconstruction of Electric Control System in Sewerage of Underground Central Pump Room煤矿井下中央泵房排水设备电控系统的PLC改造
16.Research on dynamic characteristics of hydraulic controlled gate valves used in automatic mine drainage systems矿井自动排水系统液压闸阀动态特性分析
17.Main Drainage Auto-control System of Coal Mine Based on S7-200 PLC基于S7-200型PLC的矿井主排水自动控制系统
18.Reason for Destruction of New-Old Concrete Bonding by Rising Drainage Shaft of Tailing Dam尾矿库排水井架加高新旧砼结合面破坏之原因
相关短句/例句
discharged water from coal mine矿井排水
1.This paper expounds the present situation of discharged water from coal mine,probes into the classification and treatment methods,and illustrates the importance of the reuse of discharged water from coal mine with practical case.简述了煤矿井下排水的现状,探讨了煤矿井下排水的分类和处理方法,并通过实际工程案例阐明了矿井排水资源化的重要性。
3)discharge water out of mine矿井外排水
4)drainage of colliery矿井排水量
5)mine drainage矿井排水<能>
6)mine pump矿井排水泵
1.In order to improve the efficiency of mine pump selection and realize resource share,invokes the component compiled by visual basic using ASP technology,performance graph is generated dynamically in Web and mine pump selection based on Web is realized.为提高矿井排水泵的选型效率,实现资源技术共享,利用ASP技术,调用VB编写的ActiveX组件,在网上动态生成性能曲线图,实现了矿井排水泵的网络选型。
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)
