Due to the nature of the soil condition, much thought and planning was channeled towards the selection of a construction method that would have minimal negative impact on the geological
condition of the soil.
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| Some Features of Karstic Limestone Bedrock |
It is known that the tunnel boring machine is the most advanced and cost effective method used in the construction of tunnel in Europe. However, TBMs come in a variety of shapes, sizes, using a variety of technology according to need. For SMART, after much research, study and survey, the Slurry Shield TBM was opted for. This machine is designed to overcome problems of groundwater drawdown which has been identified as the root cause of incidences of sinkhole appearance.
In terms of cost, the slurry shield machine is not different from any other type of TBM but unlike other types, the slurry shield machine is designed to create a pressured shield made up of bentonite and air pressure.
This pressured shield is able to counter balance the pressures of the groundwater and loose soil acting on the face of the boring machine.
The SMART Tunnel is among the latest and the biggest tunnel in the world. Many television channel has made their coverage about this mega project such as The Discovery Channel. This is because, it is among almost very impossible tunnel to construct because of its structure. But,with the help of many expert, the tunnel can be made and become one of our pride. The function of this tunnel is, it is use to reduce the traffic jam in the city center. But the most important, it is build to control the flash flood at K.L.
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