![]() Pumps by application
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![]() Deep Well DewateringThe Khansaheb Sykes Deep Well dewatering system is recognised as a cost effective and efficient way for medium to long term dewatering of large projects where the excavation is greater than 4 metres or when Wellpoint dewatering is deemed inefficient. Our Deep Well dewatering system offers many advantages including:
![]() Deep Well dewatering systems are effective in a range of soil conditions from gravel to fine sands. The technique is particularly suited to deeper excavations or where artesian groundwater pressures threaten base stability. Deep Well dewatering systems can also be used where small amounts of drawdown are required over large areas. ![]() Deep Well Dewatering Systems![]() Deep Bored Pumping Well
Pumps typically used for deep well gravity drainage include Pumpex electric submersible units: these pumps permit excavation down to 22m in a single stage. Deep Well dewatering systems can be installed in a ring around an excavation to lower the water level and maintain a safe, dry site. Several equations can be used to design Deep Well dewatering systems, however many of these are based on empirical data and occasionally fail. Practice and experience, along with a firm understanding of the underlying principles of dewatering, are the best tools for designing a successful system. This is where you can rely on the 35 years of experience and technical dewatering expertise of Khansaheb Sykes.Deep Well dewatering systems are effective in a range of soil conditions from gravel to fine sands. The technique is particularly suited to deeper excavations or where artesian groundwater pressures threaten base stability. [Because the pump is installed at depth in the well there is no physical limit on drawdown other than the aquifer response and the performance characteristics of the pump in use. Well yields can be improved by specialist development techniques such as airlift in granular soils and acid development in chalk.] Khansaheb Sykes installs Deep Wells with a liner and screen to provide borehole support and allow groundwater ingress whilst avoiding collapse of unstable granular soil. A filter pack is placed around the Deep Well liner to prevent suspended solids from entering the Deep Well. The pumps are powered from a central control cabin and discharge water is normally collected in an HDPE or GI ring main. Khansaheb Sykes chooses materials suitable for the harsh physical climate of the Middle East making the systems reliable in the long-term. Khansaheb Sykes creates unobtrusive Deep Well systems that cause a minimum of access restrictions by using relatively widely spaced wells and designing perimeter systems that rarely call for the use of internal wells, thus providing excavation interiors free from dewatering wells. Our Deep Well dewatering system is also a versatile pre-drainage solution which can pump high and low volumes of groundwater. This method is best suited to homogeneous aquifers that extend well below the bottom of the excavation. Through our depots and offices, we provide a local hands-on service nationwide. Our dewatering products and ground water control services are just a phone call away.
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