1.
By determining the ventilation resistance of the mine shaft ventilation system, it is found that the ventilation resistance in return airways is particularly large and the ventilation degree is middle.
通过对矿井通风系统进行通风阻力测定,发现矿井回风段通风阻力过大且通风难易程度为中等。
2.
Application of Special Air Return Mine Shaft to Mine Safety Production
专用回风井在煤矿安全生产中的作用
3.
Quick Roadway Excavation with Hoisting by Air-return Shaft
利用进回风立井改绞实现矿井快速掘进
4.
A ventilating shaft, as in a mine.
（比如矿井中的）上风井
5.
Technology of Anchored Bolt Supporting for Main Return-air Roadway at+450m Level in Gaohe Mine
高河矿井+450m水平总回风大巷锚杆支护技术
6.
supply with a brattice, to ventilate mines.
装上矿井通风用的风幛。
7.
Rapid Sinking of the Upcast Shaft in Southern District of Gujiao Coal Mine through Drilling and Freezing of Top Soil Section
顾桥矿南区回风井表土段打钻、冻结快速施工技术
8.
mine static head
矿井通风系统静压头
9.
Standard for the equipment of ventilative safety of colliery
矿井通风安全装备标准
10.
Calculation on Effective Air Quantity of Mixing New Mind in Mine Series Ventilation New Wind-doped
矿井串联通风掺新风的有效风量计算
11.
Rapid Construction Technology of Freezing Well-wide Shaft of New Shanghai No.1 Ventilation Shaft Mine
新上海一号矿风井全井冻结井筒快速施工技术
12.
Study on Ventilation Technology for Da Shuitou Hign Methane Mine;
大水头煤矿高瓦斯矿井通风技术研究
13.
Research on the optimizing technology of ventilation system renovation for multi-airshaft mine
多风井矿井通风系统优化改造技术研究
14.
Technology of Father Airshaft Water Burst Flooded Well of Baixiangshan Iron Mine
白象山铁矿风井突水淹井治理技术研究
15.
Analysis of Roadway Supporting Technology Used in Wind Shaft Station of ZhuJi Thousand Meters Mine
朱集矿千米深井风井车场巷道支护技术及分析
16.
Construction technique of central ventilating shaft and second auxilary shaft freezing engineering in Xieqiao mine
谢桥矿中央风井及二副井冻结工程施工技术
17.
Research of Reuse Technic of Water Reseource in Queershan Mine, Zuoyun County, Shan Xi Province;
山西左云县鹊儿山煤矿矿井水回用技术的研究
18.
Tao Yang coal mine water depth processing technology used to practice
陶阳煤矿矿井水深度处理回用技术实践