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How to ensure the thickness of the tunnel second lining

The main part of the general construction inside the tunnel is the second lining, which is the secondary lining. The main structure of the tunnel lining trolley is a reinforced concrete structure, which forms the main body of the tunnel support, and is the permanent support of the tunnel. Its design life follows the design […]

What are the characteristics of modern tunnel construction?

The characteristics of modern tunnel construction and development are closely related to scientific and technological progress, social and economic development and sustainable development concepts: a. The progress of human science and technology, especially the rapid development of computer technology and information technology, enables the force of the tunnel excavation process to be accurately controlled through […]

Construction process and precautions for grouting with tunnel lining

The lining grouting construction technology of tunnel lining is suitable for the grouting construction of lining belt mould of passenger dedicated railway line. The radial grouting pipe is pre-buried on the trolley, and the grouting is carried out through the grouting pipe in time after the construction of the second liner is completed 2h. The […]

Use and maintenance of lining trolley walking system

The working conditions of the tunnel lining trolley are severe and the load is heavy. The experiment proves that the life of the parts of the walking system is the shortest compared with other parts of the lining trolley. Therefore, the walking system must be used and maintained correctly to improve its traffic performance, reduce […]

Characteristics of tunnel lining trolley walking system

The tunnel lining trolley walking system, also known as the walking device, refers to the general name of the mechanisms and parts that ensure driving, support the car body, and reduce the bumping and vibration of the lining trolley on various ground driving. It consists of two parts: track propulsion device and suspension device. Its […]

Common problems and solutions of tunnel lining trolley construction

Before the tunnel lining trolley starts lining construction, the tunnel lining trolley must be positioned so that the section size of the tunnel lining trolley is consistent with the required size, and the following common problems should be noted during the construction process. 1. What preparations should be done before the trolley is installed? When […]

Selection of tunnel lining materials

The so-called lining refers to the artificially constructed supporting structure, which can be collectively referred to as lining. The tunnel lining can be divided into initial supporting and secondary supporting (secondary lining). Tunnel lining materials should first have sufficient strength, durability, impermeability, corrosion resistance and frost resistance. In addition, from the economic point of view, […]

What are the principles of tunnel design?

The design of the tunnel should be based on the overall situation, comprehensively considering the requirements of the overall function of the highway, land resources, ecological environment, and sustainable development, to fully ensure that the main structure of the tunnel (slope body, gate, lining, pavement, etc.) is stable and reliable, avoiding diseases during operation happened. […]

Causes and treatment of cracks in tunnel lining

Tunnel cracks are one of the common diseases of tunnel linings. Cracking of linings is manifested in both the primary lining and the secondary lining, of which the secondary lining is the most serious. The distribution of lining cracks is the most on the left side of the lower line, followed by the left side […]

Analysis of key points of tunnel lining construction in tunnel engineering

Tunnel lining construction is a key construction content of tunnel engineering, which is related to construction quality and construction safety. So what are the common causes of common problems in tunnel lining construction? What control measures can ensure the quality of tunnel lining construction? The following is an analysis of the main points of tunnel […]