Rotary excavation construction case | Zhongshan Eastern Outer Ring Expressway

2025.10.31

Construction time

In 2025

Construction site

Zhongshan, Guangdong

Project type

earthwork

Device type

Pile Mechanics

Project Location:Zhongshan City, Guangdong Province

Equipment model:SR505

Pile diameter:1500mm、2000mm

Pile Depth:50~60m

Geology:0~12m silty clay

12~50m silty clay and sand layer

50-70m strongly weathered and weathered mixed rock, fractured rock

Construction process:12m long cylinder and mud wall construction

Construction method:

SR505 weighs 175 tons under construction state, according to the thick silt layer of geological exploration and poor bearing capacity of the foundation, in order to ensure construction safety, the front end of the roadbed box is paved with gravel thick and the front end of the roadbed box is used as a bearing load.

The silt layer has a low rotation speed and slow footage to prevent drilling and protect the hole wall to prevent shrinkage
The crushed rock is constructed with an extended drill bucket to improve the verticality of the hole and prevent the drill bucket from deviating
The construction of large models should focus on the safety of the construction platform, especially the construction status of the water trestle

The whole hole formation time is 18~22h

Next:Rotary excavation construction case | SR235S Anning University of Finance and Economics residential community project

Rotary excavation construction case | Zhongshan Eastern Outer Ring Expressway

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