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The first cross-river earth pressure mud-water dual-mode shield machine "Yujiang" in the upper reaches of the Yangtze River was successfully rolled off the production line.
Release time:
2023-08-25
On August 20, the first cross-river soil pressure mud-water dual-mode shield machine "Yujiang" in the upper reaches of the Yangtze River was successfully rolled off the production line in Liaoning Sansan Industry Co., Ltd. More than a hundred people including representatives of the owner, representatives of the general contractor, representatives of the supervision, representatives of the construction unit, representatives of the funder, and representatives of the employees of the Third Industry witnessed the splendid moment of the "Great Power.
On August 20, the first cross-river soil pressure mud-water dual-mode shield machine "Yujiang" in the upper reaches of the Yangtze River was successfully rolled off the production line in Liaoning Sansan Industry Co., Ltd. More than a hundred people including representatives of the owner, representatives of the general contractor, representatives of the supervision, representatives of the construction unit, representatives of the funder, and representatives of the employees of the Third Industry witnessed the splendid moment of the "Great Power.
The "Yujiang" shield machine has a cutter head diameter of 8.83 meters, a body length of 132 meters, a total weight of 1350 tons, a total installed power of 4933KW, and a cutter head torque of 15000 KN.M. It is used for the construction of Chongqing Station-Nanbin Road Station section of Chongqing Rail Transit Line 27, Bid 08. The engineering geological conditions of the interval are special and difficult. It is a mudstone and sandstone formation of the Upper Shaximiao Formation of Jurassic System, which is easy to form mud cakes. The surrounding rock grade is IV and V, and the formation is uneven in hardness. The interval is a "V" slope with a maximum longitudinal slope of 38 ‰. The shield machine will cross the Yangtze River from north to south for 900 meters with a water pressure of 0.75MPa. The minimum thickness of 8 meters, permeability, water gushing and other risks. In addition, the shield starting shaft is 78 meters deep, the surrounding site is limited, and the construction organization is difficult.
In view of the particularity of the engineering geology of the project, "Yujiang" integrates the mature and advanced manufacturing technology of composite earth pressure balance shield machine and mud water balance shield machine in the 3rd and 3rd industries to creatively tailor-made earth pressure/mud water dual-mode shield machine, which is not only suitable for long-distance rock excavation, but also meets the geological conditions of high water pressure. "Yujiang" is equipped with full wear-resistant cutter head, arbitrary grouping of main pushing oil cylinders, synchronous control of main drive and laser guidance technology, high-performance rock crushing system, slurry drainage system, foam slurry flushing system, air refrigeration system, emergency power generation system, intelligent control system, etc. Foam and slurry flushing coexist independently, soil pressure and slurry mode can be used independently, and switching can be realized at any time, the mode switching time is short, efficient and safe.
Hu Wei, project manager of the construction unit, said: the equipment manufacturing industry is the backbone of the national manufacturing industry. The third industry has always adhered to the guidance of scientific and technological innovation, comprehensively mastered the core technology, continuously improved the level of localization, autonomy and intelligence, and created shield equipment with high tunneling efficiency and excellent quality with the concept of "focusing on core products and leading scientific and technological progress", Looking forward to the third industrial shield machine in Chongqing subway construction!
Technology is the driving force
Dreams are the direction.
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Liaoning Censcience Industry Co., Ltd.
Address: No.33, Anyang Street, Xiangyang Industrial Park, Liaoyang City, Liaoning Province
Telephone:0419-7183999
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