First, the construction cost is different.
1, SMW pile construction cost is low.
2. Deep mixing pile is a kind of mechanical equipment, and its cost is relatively high.
Second, the working methods are different.
1. Deep cement mixing pile is to use deep mixing machinery to forcibly mix soft soil or sand with curing agent on the foundation to harden the soft soil foundation and improve the foundation strength.
2.SMW pile construction will not disturb the adjacent soil, and will not cause adjacent ground settlement, house inclination, road cracks and underground facilities displacement.
Third, the use area is different.
1, SMW construction piles are used for urban viaduct construction, where space is limited, or building walls on the seabed or strengthening soft foundations.
2. Deep cement mixing pile is suitable for soft foundation treatment with remarkable effect. After treatment, it can be turned into piles, walls and so on.
Extended data:
The most commonly used SMW method is triaxial drilling mixer, in which drill pipes can be used for cohesive soil and gravel soil and bedrock. Although there are still some problems and concerns in the application of SMW method, as a new technology to be popularized and applied, on the premise of meeting the engineering technical requirements, SMW method is chosen as the enclosure structure, which has incomparable advantages over underground continuous wall and bored pile plus water-stop curtain as the enclosure structure.
Therefore, as investors and designers, after technical and economic argumentation and comparison, SMW construction method is generally preferred as the enclosure structure.