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China railway construction heavy industry and China Railway 18th bureau "hand in hand" collaborative innovation the strongest "team" of domestic TBM

China railway construction heavy industry and China Railway 18th bureau "hand in hand" collaborative innovation the strongest "team" of domestic TBM

the raw material industry in Liaoning Province will initially realize the transformation and upgrading of industrial structure and the optimization of industrial layout. China Construction machinery information

recently, good news came from the project Department of the 18th Bureau of Songyin water supply project in Central Jilin Province, The first domestic large-diameter full face hard rock tunnel boring machine (open linear good TBM) independently developed and manufactured by China railway construction heavy industry Co., Ltd. drove 73.8 meters on May 11 (day shift plus night shift), breaking the record of 63.5 meters per day footage of foreign open TBM in domestic construction, creating a new best result

the achievement is the result of collaborative innovation, overcoming difficulties and tacit cooperation between China railway construction heavy industry and China Railway 18th Bureau. It is reported that the first domestic large-diameter full face hard rock tunnel boring machine has been "hand-in-hand" with China Railway 18th Bureau and China railway construction heavy industry from project application, contract signing, R & D and manufacturing to on-site construction. The products have been successfully applied in the loose water diversion and water supply project in the central city of Jilin Province, promoting the industrial progress of large-diameter full face tunnel boring equipment construction in China

the Songhua water diversion and supply project in the central part of Jilin Province is located in the central part of Jilin Province. The tunnel of the main water transmission line has geological characteristics and technical difficulties such as "long distance, unstable rock strata, many fault zones". In order to ensure that the project can be carried out safely, environmentally friendly and efficiently, Jilin water investment company decided to use open full face tunnel hard rock boring machine (TBM) for construction after demonstration of a manufacturing plant opened by several Alcoa companies. In October, 2013, China Railway 18th Engineering Group Co., Ltd., which has the most abundant experience and outstanding achievements in TBM construction, won the construction contract of bid section II. Subsequently, after strict public bidding, in June 2014, China railway construction heavy industry Co., Ltd. successfully won the bid for TBM equipment in the second bid of the main trunk line of Songyin water supply project in Central Jilin Province with its rich experience in the design and manufacture of roadheader

relying on the support of China Railway Construction and the national "863 Plan" project, China railway construction heavy industry and China Railway 18th bureau have started key technology research and scientific and technological research in combination with engineering geological conditions. China Railway 18th Bureau has put forward the formula and construction technology scheme of efficient TBM construction parameters through the experience accumulated in the past using TBM, and provided suggestions on TBM processing technology, processing method, testing method, etc, CRCC heavy industry has broken through the core technologies such as large-diameter TBM multi system coordination technology, high-power, variable load, high-precision electro-hydraulic control system design and integration technology, key component condition monitoring and diagnosis technology, vibration analysis and vibration reduction technology. On December 27, 2014, the first domestic large-diameter full section hard rock tunnel boring machine in Changsha Shunde production capacity is only an important starting point when the current production capacity contradiction is prominent

in order to complete the project construction with high quality and efficiency, on January 14, 2015, the after-sales team of China railway construction heavy industry successively arrived at the construction site of Songyin water supply project in Central Jilin Province. On January 20, TBM components were successively transported to the construction site. The construction team of China Railway 18th Bureau and the after-sales personnel of China railway construction heavy industry overcame the severe weather conditions of cold and freezing in the north, and worked 24 hours without interruption in the form of "three shifts" in just 55 days, The assembly and commissioning of TBM was completed at a speed twice as fast as that of foreign TBM manufacturers, and the trial tunneling was started on March 18. The project Department of Songyin water supply project in Central Jilin Province has repeatedly praised it. Up to now, the first domestic large-diameter full face hard rock tunnel boring machine has successfully driven 1200 meters, and has always been at the forefront of the three bid sections of the pine diversion and water supply project in the central city of Jilin