one open end tunnel

The difficulty of ventilation in the one open end tunnel was resolved.

针对河北峪耳崖金矿竖井325中段独头平巷掘进工作面通风中存在的实际问题,重点阐述了DT-1型高效通风系统的性能及推广应用情况,解决了一直制约着该矿独头平巷掘进工作面通风效果的难题。

Numerical simulation study on ventilation flow field of wall-attached jet in heading face;

独头巷道附壁射流通风流场数值模拟研究

According to the characteristics of workspace in heading face,this paper gives the definition of partial air age and average air age,and their models for calculating.

根据独头巷道作业空间的特点,给出了独头巷道局部空气年龄、平均空气年龄的定义及其计算模型,用示踪气体测定平均空气年龄的方法和原理,并用CFD(computational fluid dynamics)对独头巷道附壁受限射流通风流场及平均空气年龄进行了数值计算,得出了独头巷道空间通风流场和平均空气年龄分布,建立了计算换气效率和排污效率的数学模型。

Pressed ventilation in heading face is actually a restrained wall-attached jet ventilation in confined space.

独头巷道压入式通风是有限空间的受限贴附射流。

Study on the maximal driving length of dummy drift in uranium mines

铀矿井独头巷道最大掘进长度的研究

Study on Roadway Bolt-Mesh Supporting Technique in High Angle Fully Mechanized Caving Face of Wangjiashan Colliery;

王家山矿大倾角综放工作面平巷锚网支护技术研究

Study on the maximal driving length of dummy drift in uranium mines

铀矿井独头巷道最大掘进长度的研究

I took a step closer and asked, "Have you always lived there?"

便赶近一步道：“你从前就在马头巷住吗？”

The lengths of the probes used in horizontal hole in potassium mines were up to 200m.

钾盐矿井水平巷道使用的探头长度达到200米。

Study on Wireless Monitoring for Excavating Laneway Frontal Air Flowrate;

掘进巷道迎头风量无线监测关键技术研究

Nowadays, if no stories who would know it?

这个年头，还哪有酒香不怕巷子深，不炒作一下谁知道？

All the houses in Horse Head Lane are open to visitors every night! . . .

在马头巷那几条小道上，每家人家，每天晚上都有人去的

Research on Technology of Fast Speed Drill Pipe Bit Based on Breaking Roadway Floor Ore-forming

基于破碎巷道底板成孔的快速钻杆钻头技术研究

Ventilation Technology of 8 km Heading at One End in North Tianshan Tunnel

北天山长大隧道8km独头掘进通风技术

The tunnels connecting them, usually at right angles, are crosscuts.

连接平巷、一般与平巷成直角的巷道称为石门。

"In Horse Head Lane . .

“在顺门街马头巷里。…

The end of a gallery or drift.

水平巷道或小平巷的一端

A gallery or drift in a mine.

矿井中的水平巷道或小平巷

The protection of tamped mud wall in the laneway construction of “Three Lanes and Seven Alleys”

“三坊七巷”巷道施工期间夯土墙保护

Bolt Roadway Combined Support Technology in Large Section Coal Drift

大断面煤巷全锚杆巷道联合支护技术

horizontal underground passage in a mine

（矿坑中的）水平巷道.

yielding roadway arch

可缩性巷道拱形支架

The alley was strewn with garbage.

垃圾散布于巷道上。

The surrounding rocks of arched roadways are much more stable than that of rectangular roadways.

圆弧拱巷道围岩稳定性要远大于矩形巷道。