The most popular open shield machine in China has

2022-07-25
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The first open shield machine in China was assembled and started to drive in September. The first open shield machine in China was assembled and started to drive in September. In order to reduce the risk of project construction, in recent years, the shield method has been used for the construction of rail transit section projects in the city. As the stratum of tunnel crossing is mainly medium coarse sand, silty fine sand, sand gravel and other medium uneven stratum, some sections

the surrounding environment of the rail transit construction project is complex, the construction is difficult and the safety risk is high. In order to reduce the risk of project construction, in recent years, the shield method has been used for the construction of rail transit section projects in the city. As the tunnel passes through medium coarse sand, silty fine sand, sand gravel and other medium uneven strata, and there are boulders with a diameter of more than 1m in some sections, there is a great safety risk in adopting manual concealed excavation. The Cutterhead of earth pressure balance shield is seriously worn in this medium uneven stratum, which is not conducive to shield tunneling. It is often blocked and stopped due to boulders, sand gravel and other uneven strata

in order to overcome the shortage of human resources for manual excavation, the construction safety wind is 6 The test results can output the data in Excel format and solve the problems such as severe wear of Cutterhead of earth pressure balance shield in medium coarse sand layer, silty fine sand interlayer, sand gravel and other media uneven strata, so as to solve the construction problems of shield tunneling in uneven strata. The city has carried out scientific Research on open shield tunneling between haojiafu station and East Xincheng Station in section 15 of phase II of rail transit line 6

in 2011, Beijing (real estate) Rail Transit Construction Management Co., Ltd. initiated the scientific research project of open shield, which was listed as a major scientific research project in Beijing in 2012. With the joint efforts of China Railway fifth Bureau Group Co., Ltd., Beijing Sany Heavy Machinery Co., Ltd. and coke steel enterprises, the assembly of the first open shield machine in China was completed in July, 2013, and the excavation will officially start on September 1, 2013

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