In China, a country with extremely complicated geographical environment, it is essential for engineers and workers to work hard to build such a developed transportation network. Humaling tunnel is one of the representative projects.
Humaling Tunnel is the first long tunnel from Lanzhou to Chongqing in lanzhou-chongqing railway Project, with a total length of 135438+0km[ 1], which crosses a reservoir and a river, with a length of 3.25 km? When crossing the tertiary saturated water-rich silt layer, many water pockets of different sizes are formed. Due to the influence of construction disturbance, the surrounding rock liquefaction is very serious, and the safety hazards such as water inrush and sand gushing are prominent, which greatly affects the construction progress. This project is listed as the "No.1 Key and Difficult Project" of the whole railway. 201June 7/morning of kloc-0/9 10: 30, after eight years of construction, the humaling tunnel was officially completed.
By 2065438+May 30, 2004, the inclined shaft and the main tunnel were excavated 13000 meters, realizing the "double leap" from "snail crawling". Then, good news came from the grouting test group of Humaling Tunnel in lanzhou-chongqing railway, a foundation reinforcement technology company in Beijing. The Humaling Tunnel Technology Research Team entrusted by the company lived up to expectations and solved "a rare problem in China and a world problem". The construction progress of Humaling Tunnel has been increased from more than 0/0 meter per month to more than 20 meters. Since the beginning of winter, the third work area has organized a construction team of 1.200 people, and seven working faces have been promoted in an orderly manner.
Praise Chinese builders and praise China's wisdom.