Active Member
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[China]
Address: No,21,Yongyang Road, Liuyang Hi-tech Industrial Development Zone, Changsha, Hunan, China 410323
Contact name:ivy
Changsha Tianwei Engineering Machinery Manufacturing Co., Ltd. |
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SMW, which is short of Soil Mixing Wall, is a construction method
developed in Japan in 1976. Now it consists 50% of underground
continuous wall constructions in Japan, and widely adopted in
countries in southeast Asia, the United States, France etc. In
Shanghai, Hangzhou, Nanjing and other cities of China, SMW becomes
quite popular after its introduction years ago.
SMW uses multi-shaft auger to drill soil in situ, meanwhile pumps
cement grout from the tips of the augers into the drilled holes.
After sufficient mixing of the grout, H-shaped steel or other types
of steel are embedded into the columns before the soil-cement
mixture hardened, forming a underground continuous wall with
rigidity and intensity. The wall could be used as retaining support
or water seal. Three-shaft auger machine is commonly used.
SMW method has the following advantages:
1.Low cost. Foundation retaining using SMW method with three-shaft
auger machine is much more competitive in price than traditional
method when constructing underground continuous wall.
2.Shorter construction period. SMW method consumes much less time
than other methods. Under normal geographical conditions, it could
build 70-80m² walls per shift.
3.Good seal quality. The wall is continuous without any cracks.
Hydraulic conductivity can reach as much as 10-7cm/s.
4.No disturbance in nearby soils. SMW method would not cause
hazards like ground subsidence, building inclining, road cracks or
shift of underground facilities.
5.Wide range in use. It can be applied on cohesive soil, silt ,
sandy soil, gravel soil.
6.the waste soil is far less than other construction methods.
SMW-160 Drilling Rig Parameters:
| item | unit | SMW-160 | ||
| total leader length | (m) | 39 | ||
| leader diameter | (mm) | Φ920 | ||
| leader oriented center distand | (mm) | 600 | ||
| leader angle adjustment range | (º) | ±1.5 | ||
| diagonal bracing cylinder stroke | (mm) | 2800 | ||
| max drilling model | (mm) | ZLD85-5 | ||
| double hydraulic winch (hanging drilling, liftting winch) | single pulling force | (kN) | 800 | |
| (kN) | 12 | |||
| wire rope diameter | (kN) | Φ22 | ||
| rope capacity | (m) | 550 | ||
| hydraulic winch (hanging drill pipe, hanging pile) | single pulling force | (kN) | 4 | |
| rope capacity | (m) | 120 | ||
| platform rotary angle | (º) | ±10 | ||
| pile frame movement | longitudinal step | (mm) | 3600 | |
| horizontal step | (mm) | 600 | ||
| Supporting leg rise height | (mm) | 500 | ||
| Horizontal track plate | length | (mm) | 10600 | |
| width | (mm) | 1200-1400 | ||
| longitudinal track plate | length | (mm) | 7000 | |
| width | (mm) | 1800 | ||
| motor power | (kw) | 60 | ||
| hydraulic system pressure | (Mpa) | 18 | ||
| total piling weight | (t) | 145 | ||
