Geomaterial |
Applied Energy (ton-m/m2) |
Depth of Improvement (m) |
Loose building waste | 150 | 4 |
Ash fill | 150 | 3.5 |
Select granular fill | 150 | 4 |
Sandy silt | 80 | 2 |
Silty sand | 190 | 3 |
Geomaterial |
SPT N Value after Improvement |
Typical improvement Depth (m) |
Sand | 20-30 | 6 |
Silty sand | 15 | 4.5 |
Sandy silt | 10-15 | 3.5-4.5 |
Uncontrolled fill | >10 | 3 to 5 |
Geotechnical Design and Solution Ground Improvement Deep Foundation Earth Retention Grouting Technology Injection System Excavation and Stablization Seepage Control Slope Stabilisation Rapid Impact Compaction Deep Soil Mixing Micropile Shotcrete Anchor and Soil Nail Diaphragm Wall Secant Piles Wall Deep Dynamic Compaction Rock fall and avalanche Barrier Sheet pile wall
Soil anchorage is an active method for stabilizing inclined lands and excavations. In this method soil wall is drilled up to 20 cm and to enough depth, then preassemble steel reinforcement is placed in the drilled hole and the cement bass grout is injected in the hole. Then it is activated by prestressing hydraulic jacks to stabilize the excavation and incline lands.
Caissons are huge semi deep concrete foundation which provide enough balance and stability for its superstructure and usually is embedded on a previously improved ground. It is also applicable to use replaced granular soil to act as in minor concentrated loose sands.
Soil improvement is a pack of solutions to help the soil to tolerate the applied loads and conditions in a safe and determined manner. Solutions like compaction and RIC and stone columns, soil replacement, drainage, grouting, soil mixing and so on, are mainly used in this regard.