146 Meters! Sany SR420 Creates The Deepest Record Of Rotary Excavation Construction In China!

In May 18th, Guangdong concern Lengdong high-speed sea bridge main pier pile lit the construction site, Beijing 31 heavy machine SR420 successfully cracked the bridge foundation engineering mud sand and other construction problems, create the pile diameter of 2.8 meters, 146 meters of Kong Shen domestic rotary drilling construction records, successfully fill the domestic rotary drill blank construction field of basic equipment in the large, ultra deep pile, perfect performance!

Sea bridge across the sea on both sides of brightly lit, is an important road connecting the East Island and the city of Leizhou, with complex geological conditions, formation by silty clay, sand, sand layer etc, hole collapse easily in construction. Meanwhile, the design depth of the main pier of the cross sea bridge is more than 140 meters, which is far beyond the capacity limit of the general rotary excavating equipment, which also discourages many pile foundation construction enterprises. To this end, the construction side of Guangzhou Minfeng Construction Engineering Company Limited contact with the Institute of machine 31 piles, hoping to get technical support, this problem to overcome.

The face of the construction of such situation, 31 pile machine research institute and experts in the field of measurement, assessment, as a mature type 31 SR420 rotary drilling rig, equipment reserve coefficient is high, strong stability, high structural strength, can fully meet the construction of large and deep pile pile construction requirements. At the same time, the researchers also made a series of customized upgrading of equipment for the difficulties of engineering, and further played the advantage of SR420 rotary drilling technology, performance and quality. According to Wang Longgang, director of Beijing 31 heavy machine rotary excavating station, 31 adopted multi-layer structure drill pipe design, robot automatic welding technology, adjusted the structure of key components, and combined with the new construction technology, thereby greatly improving the overall performance of SR420.

Due to the bad construction environment, in order to ensure the smooth implementation of the project, the 31 pile machine has also been stationed in the service team for a long time to solve technical problems for customers in time, and effectively guarantee the smooth and stable operation of the equipment. After the technical upgrade of the 31 SR420 fully meet the stringent requirements of construction, create the pile diameter of 2.8 meters, 146 meters deep hole domestic rotary drilling construction record, rotary drilling equipment successfully fill the domestic blank in the field of construction of super large and deep pile foundation, highly praised the use of business owners, equipment. Luo Minsheng, the head of Guangzhou min Jian, said that no equipment in the market could meet this construction standard, and the 31 equipment solved the construction difficult problem of ordinary machine.

It is understood that, as a domestic rotary drilling rig leading brands, 31 rotary drilling products have been involved in the Qinghai Tibet railway, the National Stadium "bird's nest", Anqing, Yangtze River bridge and other key projects, accept all kinds of construction environment test, and high work efficiency to complete various construction tasks, showing excellent quality.

The article is reproduced：http://www.sanygroup.com/sjzc/6246.html