Recently, the "military Soul" and the "Carpenter" made by China Construction Tunnel equipment Manufacturing Co., Ltd., two large earth pressure balance composite shield machines, went off the line in Nanjing. The equipment has a single excavation diameter of 6.5 meters, a total length of 75 meters, and a total weight of 490 tons. Will be in Suzhou Rail Transit Line 5 12 standard project "first show".

The two shield machines are suitable for the construction of complex geological conditions such as soil quality with great difference in strength and uneven soil layer on the cross section of shield tunneling. It can cut soft soil, hard soil, sand gravel and soft rock, and the maximum tunneling speed is up to 10 cm / min. The main driving technology, hydraulic integration technology, intelligent control technology, data acquisition technology, safety control technology, module control technology, new materials and new technology, etc. Is the "made in China 2025" plan to focus on the development of high-end equipment. (China Construction installation contribution)