Reply on topic: China completed 13 tunnels total 55km for Chengdu – Kunming railway.
Also a 14.5-km tunnel on the Kunming-Vientiane Railway to link China with Laos has been bored through, the China State Railway Group Co., Ltd. (China Railway) said. http://www.xinhuanet.com/english/2020-08/12/c_139285588.htmChina Railway Group has most patents in tunnel safety monitoring
Tunnel safety monitoring helps to rescue people inside a tunnel and to maintain air quality and control spread of smoke in case of fire or a disaster. https://www.mining-technology.com/data-insights/innovators-tunnel-safety-monitoring-mining/?cf-viewChina's president Xi Jinping promises Nepal to build Rasuwagadhi-Chhare-Kathmandu tunnel
President Xi Jinping of China inks 18 agreements during his state visit to Nep...p;Rasuwagadhi-Chhare-Kathmandu tunnel that China to build. With this Nepal further falls into China's circle of influence....standing (MoU) on the feasibility study of China-N...China Railway Group has most patents in tunnel safety monitoring
Tunnel safety monitoring helps to rescue people inside a tunnel and to maintain air quality and control spread of smoke in case of fire or a disaster. https://www.mining-technology.com/data-insights/innovators-tunnel-safety-monitoring-mining/?cf-viewOptimal tunnel lighting design in aspect of lighting quality and energy performance
A tunnel surface with low reflectance degrades the lighting quality, resulting in minimum luminaire spacing and poor energy efficiency. Graphical ... https://www.sciencedirect.com/science/article/pii/S0886779822004771Technoplan high quality membranes for Tunnel and Groundworks
Technoplan produce very high quality membranes for Tunnel Construction. Please check out the products section: https://www.technoplan.com.tr/?lang=en
cover tunnel photo by: Matt Brown from London, England / CC BY
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