Mersing has proven its expertise in the design and execution of trenchless works, in complex environments, tight environmental regulation and difficult geological or soil conditions. We offer comprehensive civil engineering services that includes planning, design and feasibility studies, trenchless installations as well as providing technical and construction management and supervision. In addition, to ensure that service delivery were engineered to last, with minimum environmental and surrounding impacts, Mersing provides risk management services for all its offered solutions.
Mersing has 30 years of experience in Guided Auger Boring method. It is one of the most reliable methods for short crossings, which is non-steerable and it is an ideal method for straight and accurate drives in various ground conditions. Our capacity of drilling ranges from 60meter – 80 meter maximum, 300mmØ.
During installation, the pipe fully supports the ground while the cut spoil is conveyed by continuous flight auger back to the work pit. A laser or theodolite guidance system steers the asymmetrical head through the hollow tubes.
Once the pilot tube reaches the exit shaft, an accurate line has been established and either the upsizing or pipe pull can begin. Quite similar to pipe jacking, the Auger Boring machine is pushed from the launch shaft to the exit shaft.
Pipe ramming is an alternative trenchless technology to install steel pipes underneath roads, highways, railways, hills and earth bund walls. This method is most suitable for relatively straight gradient pipelines.
The process involves the use of a pneumatic hammer that is attached to a pipe casing end. The leading end of the pipe casing is left open and fabricated with a casing shoe of a slightly bigger diameter than the casing to ensure an over-cut. The pneumatic hammer is powered by an air compressor that converts the air flow to a succession of percussive blows that drives the casing into the ground. As the pipe casing is driven into the ground, its internal annulus is filled with excavated material. The internal annulus of the pipe casing is constantly cleared and cleaned off form the excavated material as it advances along the intended crossing.
We have the capability and experience to install pipe casings by pipe ramming method for steel pipes ranging from D600mm to D1600mm.
Pipe roofing refers to lined pipes, forming into a roof matching the shape of the tunnel that was formed earlier, by tunnel excavation, and by installation of steel pipes.
We have done several pipe roofing projects, particularly in 2002- highway Jacking, and 2009 – NKVE Tunnel at Jalan Persiaran Tropicana. Mersing has the capability to do up to lengths of 100 meters, and at the diameters of 1,500mm – 2,000mm.
We have the necessary expertise and experience to provide the solution and services for a wide range of pipe rehabilitation, as we understand that every underground structure deteriorates over time, therefore it is vital that diameter sizes and estimations of length is determined strategically to ensure the longest use of each pipeline.
Pipe bursting is a trenchless method of replacing or renewing deteriorated buried pipelines. This method uses a pneumatic or hydraulic bursting mandrel to crush an existing pipeline while pulling a new pipe into place. The crushed pipe is forced into surrounding soils, acting as bedding material for the new pipe. Pipe bursting is well suited to brittle pipes and allows for the size-for-size or increased size replacement of the existing pipe, such as sewer, water, or natural gas pipes, without the need for a traditional construction trench. It is sometimes also used to replace an undersized pipelines as well.
Cured in Place is a trenchless engineering method that is most suited for pipe rehabilitation in restricted accesses, as it can be reconnected internally without excavation. CIPP is a popular method for pipe rehabilitation, due to its seamlessness, and ability to cover the widest range of pipe materials including clay, HDPE, concrete pipes and etc. CIPP is a preferred method to rehabilitate cracked, broken and failed sanitary or storm sewer pipes. Mersing has the capability to rehabilitate pipes with minimum surface disruption ranging in diameter from (101mm–203mm).