The longest tunnel throughout the Hangzhou -Chan Railway

The tunnel penetrates the scene

On July 5th, after 733 days of hard work, the longest tunnel of the Tianshan Tunnel of the Hangzhou -Chan Railway was successfully connected, laying the foundation for the completion of the entire line as scheduled.

The Hangzhou -Chan Railway is a fast high -speed railway channel in Hangzhou and Luzhou City in Zhejiang Province. Among them, the Tianchi Mountain Tunnel spans Zhejiang Province Jiande City and Luzhou City, with a total length of 4154.515 meters. And crushed, it is the control project of the Hangzhou -Chan Railway.

According to Liu Zhaosheng, the technical person in charge of the General Contracting Project Department of the Hangzhou and Railway General Contracting Projects of the Fourth Court of Railway, the geological conditions of the Tianchi Mountain Tunnel are complicated, and there are bad geology such as dangerous rocks, falling rocks, collapses, rock explosions, and rich water faults. Waiting for risks. The maximum burial depth of the tunnel is 297 meters, and there is a partial pressure in the shallow entry and export buried segments. During the construction process, it is very easy to have risks such as excessive deformation and stability. At the same time, the tunnel crosses the green vegetation is dense, and some areas are adjacent to the water source protection area and township villages. The environmental protection requirements are high, which brings great difficulties and challenges to the construction of tunnel construction.

During the construction process, under the close cooperation of the careful organization of the China Railway Shanghai Bureau Hang Wen Engineering Construction Headquarters and the General Contracting Project Department of the Fourth Court of Railway, the project department of the 11th Bureau of the China Railway Eleven Bureau carefully organized, rationally arranged, scientific construction, and insisted on innovation and guidance. Strengthen scientific and technological research and ensure that the tunnel penetrates on schedule.

According to Du Jinfeng, the 2nd standard chief engineer of the Eleven Bureau of China Railway Eleven Bureau, during the construction process, the project department used advanced geological forecasting, strengthening monitoring measurement management, strengthening advanced and initial support, strict grouting process, and using information. The entire process of monitoring and construction of the management platform has successively overcome the construction problems such as partial pressure, burial depth, surrounding rock fracture development, etc., and realized the "zero accidents" of tunnel construction safety. At the same time, the project department also actively carried out research on micro -innovation applications and scientific research topics, and launched more than 10 innovative construction equipment and construction methods, such as using water pressure blasting, wet drilling, wet spray concrete, hollow grouting anchor rod process, etc. Through a series of reliable technologies and new processes, construction efficiency has been greatly improved.

The Hangzhou -Chan Railway (Jianyan section) is the first high -speed rail project in my country that uses the "PPP+EPC" mode. The construction of the construction headquarters is one of the top ten iconic projects in the construction of the Grand Channel of Zhejiang Province. The route from the north to the Hangzhou -Huanghuang Railway, the middle of the nine -scenes railway in the middle, the Shanghai -Kunming high -speed railway in the south, about 130 kilometers in length. A total of 6 stations including Jiande, Jiandenan, and Longyou North, with a total investment of about 23.6 billion yuan.

After the project is completed, the multi -point and multi -channel connection of Luzhou to Hangzhou will be achieved. important meaning.

- END -