We pride ourselves on providing safe, technically sound and environmentally sensitive designs, and delivering them in the field, on time and on budget. Our teams combine geotechnical, hydro geological, engineering and construction management skills, a strong supply chain, quality equipment and materials and skilled operatives to meet our client’s needs.
• Full Service Provider – Construction Dewatering, Storm Water Systems, Sewer Bypass, Groundwater Treatment, Slurry Trenches, Drilling Services, Relief Wells, And Pump Equipment Manufacturing
• Design, Modeling, And Consulting For Construction Dewatering, Relief Wells, Remediation, And Pumping Construction Services
• Construction Management Services For Groundwater Control, Remediation, Landfill Gas, And Leachate Systems
• Remediation Services From Design To Installation Through Completion
• Griffin Manufacturing Division That Incorporates Our Capability From Research And Design.
Groundwater Engineering provides a specialist contracting and construction service to design, install, and commission, operate and maintain specialist groundwater, geotechnical and water supply systems, including:
• Construction dewatering & groundwater control • Water wells and water supply
• Mine dewatering • Geothermal•
Groundwater Engineering provides complete solutions for groundwater management in the construction, mining and oil & gas industries. Our expertise includes:
Construction dewatering and groundwater control
• Deep wells
• Relief wells
• Artificial recharge
• Low permeability cut-off walls • Well points
• Sump pumping
• Horizontal wells
• Siphon drains
• Dewatering for tunnels and shafts
Specialist dewatering services for open pit and underground mines, including dewatering design, pumping tests, pump sales and rental, system installation and maintenance
Pumping tests, piezo meter installation and groundwater investigations for water supply, dewatering and contamination remediation projects
Water well construction and drilling
• Water well design and feasibility studies
• Well drilling and installation
• Borehole pumps, pipe work, equipment and control panels
Water well remediation and rehabilitation
• Performance monitoring of water well performance
• Well cleaning and rehabilitation to remove clogging and encrustation
• Bore saver chemical treatment to prevent and remove iron deposits
Specialist water treatment systems for site remediation and dewatering on contaminated sites
• Geothermal heat pump systems (Open and closed loop)
• Thermal response tests (TRT)
Groundwater Control or Dewatering
Groundwater control or dewatering is the temporary reduction of pore pressures or groundwater levels to provide dry, stable and safe soil conditions in excavations below groundwater level. Dewatering is used to facilitate the construction of the deep excavations that are required for lift stations, tunnels and other underground structures.
Well point Dewatering
Well point systems are used to lower groundwater levels to provide stable working conditions in excavations. Well point systems are particularly suited for shallow foundations, utility and trench work dewatering.
A well point system consists of a series of closely spaced small diameter shallow wells. The well points are connected to a common header pipe and are pumped with a high efficiency vacuum dewatering pump. For draw downs in excess of 15-feet, further stages of well points are required and installed at successively lower levels as excavation proceeds.
Ejector (or eductor) dewatering systems are used to control pore pressures and to lower groundwater levels to provide stable working conditions in excavations. Ejector systems are able to extract groundwater and generate vacuum at the tip of wells and can be installed to depths in excess of 50-feet. Vacuum drainage can dramatically improve the stability of silty fine sands and laminated silts and clays by controlling excess pore pressures.
Supply pumps at ground level feed high-pressure water to the ejector nozzle and venturi located at the tip of the wells. The flow of water through the nozzle generates a vacuum in the well and draws in groundwater.
Deep Well Dewatering
Deep well dewatering systems are used to lower groundwater levels to provide stable working conditions in excavations. A deep well system comprises of an array of drilled or jetted wells, each fitted with an electric submersible pump.
This technique is particularly suited to deeper excavations or where artesian groundwater pressures threaten base stability. The system is reliable and the wide spacing of the wells reduces access restrictions to a minimum.
The installation of horizontal dewatering systems is relatively easy. A trencher installs an unperforated pipe followed by a synthetic or organic wrapped perforated pipe. The drain length is determined by the drain diameter, soil conditions and the water table. In general drain lengths of 50 meters is common. After installation of the drainpipe a pump is connected to the drain. After the water table has been lowered, the intended construction can start. After the construction is finished the pumps are stopped, and the water table will rise again. Installation depths up to 6 meters are common.
Use utility and dewatering to help drain standing water from construction and dump sites, basements, window wells, rooftops and more. Choose from a wide range of sizes and power levels in submersible pump models with plastic, stainless steel, and aluminum housings. Find marine sump pumps, portable utility pumps, submersible dewatering sludge pumps and more.
Shoring is the process of supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Some techniques of shoring are:-
Trenches shoring systems provide safety for workers in a trench and speeds up excavation. In this case, shoring should not be confused with shielding. Shoring is designed to prevent collapse where shielding is only designed to protect workers when collapses occur. Concrete structures shoring, in this case also referred to as false work, provides temporary support until the concrete becomes hard and achieves the desired strength to support loads.
Beam and Plate steel I-beams are driven into the ground and steel plates are slid in amongst them. A similar method that uses wood planks is called soldier boarding. Hydraulics tend to be f