scholarly journals Study on ventilation scheme and application during construction of high altitude gas tunnel

2021 ◽  
Vol 248 ◽  
pp. 03052
Author(s):  
Dong Zhengbo ◽  
Cai Shuang ◽  
Hu Juyi ◽  
Cheng Liang
Keyword(s):  
High Altitude ◽  
Tunnel Construction ◽  
Calculation Results ◽  
Cold Area ◽  
High Altitude Area ◽  
Ventilation Scheme

It is the key and difficult point to ensure the safety of tunnel construction by ventilation in high gas tunnel construction in high altitude and cold area. Taking ning-chan high gas tunnel as the research object, the ventilation of the tunnel is calculated, the ventilation parameters are optimized, the ventilation equipment is selected according to the calculation results, the location of the ventilation equipment is optimized, and the reasonable construction ventilation scheme is determined. The results show that through the design of the above ventilation scheme and the control of the site, it can not only ensure the ventilation demand of the super long and high gas tunnel construction in the high cold and high altitude area, but also ensure the tunnel construction in winter, and effectively save the construction ventilation cost.

Tunnel Construction Dust Monitoring and Dust Control Technology of High Altitude and High and Cold Area

2014 ◽  
Vol 587-589 ◽  
pp. 703-708
Author(s):  
Yu Xu ◽  
Dong Hui Yang ◽  
Yu Wei Zhang
Keyword(s):  
High Altitude ◽  
Membrane Filter ◽  
Dust Concentration ◽  
Dust Control ◽  
Control Measures ◽  
Tunnel Construction ◽  
Distribution Law ◽  
Cold Area ◽  
Environment Study ◽  
Filter Dust

In order to improve the high altitude harsh construction environment, study tunnel construction dust concentration and distribution law of different construction section, using the membrane filter dust method to achieve the dust concentration of different section, using the statistical to analysis the origin and distribution law, putting forward different dust control measures for different construction stages, to improve the high altitude tunnel construction environment. The results of dust prevention and control of high altitude region are of great significance.

A New Record of Gloydius strauchi (Viperidae, Crotalinae) from Dêgê County, NW Sichuan, China and symptoms of that species’ bite

2020 ◽  
Vol 27 (2) ◽  
pp. 113-122
Author(s):  
Sylvia Hofmann
Keyword(s):  
High Altitude ◽  
New Record ◽  
Sichuan Province ◽  
High Altitude Area

Gloydius strauchi is a venomous pit viper, which is known from Sichuan, Eastern Xizang, Qinghai, Ningxia, and Shaanxi provinces. Here I report a new, genetically verified record of G. strauchi from a high-altitude area of Dêgê County, Garzê Tibetan Autonomous Prefecture, Sichuan Province, and provide information on a mild envenomation case of that species’ bite.

South Korea in 2016

Asian Survey ◽  
2017 ◽  
Vol 57 (1) ◽  
pp. 103-110
Author(s):  
Gi-Wook Shin ◽  
Rennie J. Moon
Keyword(s):  
Decision Making ◽  
South Korea ◽  
High Altitude ◽  
Nuclear Weapons ◽  
North Korea ◽  
Heavy Industry ◽  
Financial Difficulties ◽  
Official Position ◽  
Leadership Crisis ◽  
High Altitude Area

President Park faced a leadership crisis after revelations that she relied on a confidant with no official position for key decision-making in state affairs. Heavy industry met with serious financial difficulties, and a strong anti-corruption law was enacted. North Korea tested more nuclear weapons and missiles. Controversy over the deployment of Terminal High Altitude Area Defense strained South Korea’s relations with China.

Sign in / Sign up

Export Citation Format

Share Document