Prefabricated Vertical Drains (PVD) Installation

Also known as Wick Drains, Prefabricated Vertical Drains (PVDs) are composed of a durable plastic core (usually polypropylene) wrapped around a synthetic geotextile (i.e. a filter jacket) to facilitate the movement of water through slow-draining soils.In doing this, it prevents intrusion and clogging of soil particles. Prefabricated vertical drains have remarkable flow discharge capacity and are usually coupled with surcharging to accelerate preconstruction soil consolidation.

Vacuum Consolidation

Vacuum Consolidation (or vacuum preloading) is a soft soil ground improvement method that is typically combined with Prefabricated Vertical Drains and Horizontal Drains (PVD+VCM) and basically is a solution to replace the use of a surcharge.

Soil Pre-Compression | Ground Improvement with Soil Pre-Compression | Ground Preloading

Soil Pre-compression is one of the ground improvement technique which compresses the ground under an applied pressure before placing or completing the structural load. By the use of vertical sand drains the consolidation process can be increased which reduces the time of pre loading.

Water vapor separation vacuum preloading

The water vapor separation vacuum preloading technology is a patented soft foundation treatment technology independently developed by Shengzhou Company. By studying and improving the key technologies and construction equipment in the traditional vacuum preloading method construction process, the vacuum preloading construction process for large-area soft foundation treatment is improved.

High strength dynamic compaction foundation

Dynamic compaction (DDC, heavy tamping, dynamic consolidation, etc.) is a cost-effective method of soil compaction whereby a heavy weight is repeatedly lifted and dropped from a height, impacting the ground surface with a readily calculated impact energy.

Sandless pressurized vacuum preloading

The sand free boosting vacuum preloading process is based on ordinary vacuum preloading, by inserting anti clogging plastic drainage plates into the pre-treatment foundation, The vacuum branch pipeline is connected to the corresponding vacuum main pipeline through a variable diameter four-way joint, forming a vacuum pipeline network under the membrane. The booster pipe is inserted at the designated position. Apply horizontal pressure to the soil through the booster pipe, causing the pore water to move towards the drainage plate, further improving the consolidation degree of the soil.

Combined vacuum and surcharge preloading method

Vacuum combined surcharge preloading is the superposition of vacuum preloading and surcharge preloading. The vacuum combined surcharge preloading foundation treatment method is a new type of foundation treatment that combines plastic drainage board vacuum preloading method and surcharge preloading method.

Vacuum drainage consolidation combined with dynamic compaction

The combination of vacuum drainage consolidation and dynamic compaction solves the problem of excessive pore water pressure dissipation when using dynamic compaction to treat soft soil foundation by lowering the groundwater level. The dynamic effect of dynamic compaction solves the problems of slow soil consolidation speed and large post construction settlement in traditional consolidation methods.