Trinity into the rock artifact, Shenzhen and show its might

At the pile foundation construction site of the 178-meter project of 7 super high-rise buildings in the third phase of Shenzhen China Resources City, 6 units are from SanyRotary drilling rigsis busy under construction, and this "rock artifact" has set a new record here.

It is understood that the project is located in the Dachong Old City Reconstruction Area, and the construction in the old city needs to face problems such as avoiding various underground pipelines, old foundation transformation, and difficulty in getting under the casing. In addition, piling here requires slightly weathered granite, the pile depth is 27 meters, the pile diameter is 1.2~2.2 meters, and the pile depth is 2~5 meters; Many solitary stones, * long solitary stones 17 meters, pile diameter 2~2.2 meters, solitary stone strength 110~120 megapascals.

The equipment used for the project is Sany's SR360, SR420 and SR630, a total of six units. In the process of project construction, the user innovatively adopted "different drilling tools and construction methods for graded drilling", that is, the original traditional picks were replaced with cone wheels.

"In this way, the equipment is more suitable for piling work, and we even played a miracle circle, and achieved no sediment at the bottom of the pile," Yang told reporters, "The stability of rock entry is also better." Because it is not enough to have good equipment, but also to know the construction method, and also to understand the equipment operation skills. In terms of efficiency, Chief Engineer Yang told reporters, "When entering a large solitary rock, it takes three days to drive a pile. On the whole, 6 pieces of equipment on site ensure that there are fewer than four piles in one day. ”