The longest tunnel of the Three Gorges Dam overtur

2022-09-19
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Jigongling tunnel, the longest tunnel of the Three Gorges Dam overturning expressway, was opened

jigongling tunnel, the longest tunnel of the Three Gorges Dam overturning expressway, was opened

China Construction machinery information

Guide: on April 20, jigongling tunnel, the longest tunnel of the Three Gorges Dam overturning expressway, was opened to the left. Jigongling tunnel is one of the control projects of the Three Gorges Dam turning expressway, and it is also the longest tunnel in the whole line. The left tunnel is 4505 meters long and the right tunnel is 4540 meters long. The tunnel passes through a place with abundant groundwater and karst

on April 20, the jigongling tunnel, the longest tunnel of the Three Gorges Dam turning expressway, opened on the left

jigongling tunnel is one of the control projects of the Three Gorges Dam turning expressway, and it is also the longest tunnel in the whole line. The left length is 4505 meters, the right length is 45401 meters, and the wrong meter is selected for the sample. The tunnel passes through a place with abundant groundwater and well-developed karst, which is prone to geological disasters such as water inrush, mud inrush and collapse

in view of the geological conditions of similar tunnels, the Three Gorges Dam turning Expressway Project Organization believes that it has carried out the research on the subject of "adverse geological prediction and disaster control of high-risk karst tunnels" before, established a risk assessment team, carried out risk assessment and control on the construction tracking of jigongling tunnel, proposed a construction permit mechanism, and studied the karst development law in the tunnel site, The karst cavity and water inrush are accurately predicted by using the advance geological prediction equipment, which provides a scientific basis for the safe construction of the tunnel. Code for indoor environmental pollution control of civil building engineering GB50325 (2) 001

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