The tunnel project will need to start by checking the condition of the ground covered by the stored samples from holes by using other techniques, Earth Physics. Then select the machine and how to open ground. Ground support, which helps to reduce the risk to the unexpected ground conditions. To plan a route to a horizontal and vertical line will take advantage of the ground conditions and the best.Tunnel project must begin with a comprehensive examination of the ground state by collecting samples from the drill holes using geophysical techniques other. You will then be selected and how the overburden. The ground support, which will help reduce the risk of unforeseen ground conditions. The planned route of the line horizontally and vertically to take advantage of the ground state and the best water.
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