Maximum diameter shield machine in Zizhou coal mine

The diameter is 15.03 meters

According to reports, on March 13, China's self-developed super large diameter shield machine exported to foreign countries went offline in the general assembly workshop of CCCC Tianhe mechanical equipment manufacturing Co., Ltd. This super large diameter slurry air pressure balanced shield machine with a diameter of 12.12 meters will be used in the Karnaphuli River Tunnel Project in Bangladesh, China's largest shield highway tunnel project overseas, This is also the largest diameter shield machine put into use in South Asia

news

: one of the important parts one of the "one belt, one road" initiative is the tunnel project at the canal river in Bangladesh. Compared with the international counterparts, our technology has been at the same level, "said Zhang Tianju, manager of CCCC Tianhe overseas department. These technologies can accurately control the excavation process of the shield machine, maintain the stability of the excavation face, and solve the problem of cutter head blockage." we are not behind in any way. "

it is reported that following the Bangladesh tunnel project, the 13.19m diameter slurry balanced shield machine being developed by CCCC Tianhe will soon be applied to the first high-speed railway in Southeast Asia - Indonesia Yawan high-speed railway No.1 Tunnel project. One belt, one road, was born in the world. The Zhou Jun, deputy general manager of the China Railway Machinery Manufacturing Co., Ltd., acknowledged that the competition of the international shield machine market is fierce. Western famous brands still occupy the majority of the international market with their technology and long-term brand advantages, but with the support of the state's "one belt and one way" initiative, More and more shield machines made in China will appear in the international market

The largest shield machine made in China refers to the self-developed shield machine in China; Jinghua;, At present, this shield machine has been offline, and many people pay special attention to the function of this shield machine. In fact, the main function of this shield machine is still to excavate the tunnel, but different from other shield machines, its working section is very large. Now let's introce the function of this shield machine{ RRRRR}

so for this shield machine, the biggest function is to meet the construction requirements of large tunnels, people can use this equipment to complete the construction at one time

1.8m

Mini shield machine

in the instry, the shield machine with diameter less than 3m is usually called mini shield machine. This type of machine is mainly used for the construction of municipal water supply and drainage pipelines, cable cts, etc

at present, German Wirth company has proced rvs80, rvsl60, rvs250-rvsl200 procts; Lovat's European division in Canada also has procts with a diameter of less than 1.5m, such as ms40pjs procts with a diameter of 1m and 2m procts. The diameter of Robbins procts is generally 1.8 m, 2.1 m, 2.2 m and 2.4 M. the tunnel length of 1.8 m procts can reach 125 M

characteristics of shield method

shield construction is widely used, because of its obvious advantages: 1. Excavation and lining under the shield has sufficient construction safety; 2; ② The underground construction does not affect the surface traffic, and the construction under the river does not affect the navigation of the river; ③ Construction operation is not affected by climatic conditions; ④ The vibration, noise and other environmental hazards are small; ⑤ It has little influence on ground buildings and underground pipelines

applicable conditions

when the buried depth of soft water bearing stratum or underground lines reaches 10m or deeper, shield method can be used

1. It is allowed to build the working shaft for shield entering and leaving the tunnel and mucking and feeding on the line

2. The tunnel should have enough buried depth, and the soil depth should not be less than 6m and the shield diameter

For a long time, as a special mechanical equipment for tunnel excavation, the international market of super large diameter shield machine is monopolized by European, American and Japanese brands. That is to say, in other countries except China, none of the super large diameter shield machines used in tunnel excavation are made in China. But this situation will soon become history

the project of one of the key parts one of the "one belt, one road" initiative is the important part of the economic development of the central Bangladesh economic zone. Compared with the international counterparts, our technology has been at the same level, "Zhang Tianju, manager of CCCC Tianhe overseas department, told reporters. These technologies can accurately control the excavation process of the shield machine, maintain the stability of the excavation face, and solve the problem of cutter head blockage." we have no backwardness. "

it is reported that following the Bangladesh tunnel project, the 13.19m diameter slurry balanced shield machine being developed by CCCC Tianhe will soon be applied to the first high-speed railway in Southeast Asia - Indonesia Yawan high-speed railway No.1 Tunnel project. The one belt, one road, is the most important part of the international shield market. Zhou Jun, deputy general manager of the China Railway Machinery Manufacturing Co., Ltd., acknowledged that the competition in the international shield machine market is fierce. Western famous brands still occupy the majority of the international market with their technological and long-term brand advantages, but with the support of the state's "one belt and one way" initiative, More and more shield machines made in China will appear in the international market