New method of drawing out gas before the roadway threaded together -full air pressure drill draw method;
巷道贯通前排放瓦斯新方法——全风压钻孔排放法
Research of Several Key Problems in Numerical Simulation of Flow Field of Perforation Airway
贯通巷道风流流场数值模拟若干关键问题研究
Reasonable Determing Measuring Error Parameters to Guarantee Tunnel Safely Go-thlough
合理确定测量误差参数保证巷道安全贯通
An Object-oriented Integration Program for Estimation of Through Error
面向对象的巷道贯通误差一体化预计方法
Application of GPS Technoloy on Surveying between Tunnel Breakthrough in Two Wells
GPS技术在两井间巷道贯通测量中的应用
Applying PDCA Circulation to Improve Shaft Excavation
应用PDCA循环,提高井巷贯通质量
A passage or gallery in a coal mine.
通道煤矿中的通道或水平巷道
Lane Control Network Through the Measurement and Accurate Methods of Emplaced
井巷贯通测量控制网布设及精度提高方法
Control Technology on Gob Connecting Roof in 2-625C Working Face of Xinzhi Coal Mine
辛置矿2-625C工作面空巷贯通顶板控制技术
at different levels beneath the ground horizontal tunnels are excavated in order to reach and follow the vein. These tunnels are called drifts;
在地下不同的水平，开拓有许多水平巷道以通向矿脉并随矿脉延伸。这种巷道叫作平巷;
Simulation Analysis of MC-DS-CDMA Modulation in Mine Tunnel
MC-DS-CDMA调制通信的矿井巷道信道仿真分析
On the Details of Gas Management on the Inclined-high-exploration Wall Retreating and Cross Pitch Mining in Double Roadway Excavation
双巷并掘贯眼横贯瓦斯管理细节探讨
"a roofed passageway or lane, especially one with shops on either side."
有屋顶的通道或小巷,尤指两边有商店时。
Probe into ventilation at long distance driving drift in high yield and high efficiency mine
对高产高效矿井长距离掘进巷道通风的探讨
The Model and Simulation of UWB Based on MB-OFDM in Coal Mine Underground
基于多频带OFDM的矿井巷道超宽带无线通信建模
Practice of using abandoned roadway as retracement channel in fully-mechanized face
利用空巷作为回撤通道的综采工作面回撤实践
Simulation Analysis of OFDM Modulation in Mine Tunnels
OFDM调制技术在矿井巷道中的通信性能仿真分析
Iterative algorithm of boundary air leakage in venting laneway along goaf
采空区沿空通风巷道边界漏风分布的迭代计算
Performance Analysis of MT-CDMA Modulation in the Mine Tunnel
多音CDMA调制在矿井巷道中通信性能分析