Get a look towards other " Method of Tunneling in Soft Rock ″used in trending condition LINER PLATE METHOD Standard sized pressed steel plates ,plain or corrugated are used to support the soil,and work is carried in short length corresponding to the length of these plates.The plates are made with flanges of angle shape on all four sides.All the flanges carry holes through which they are connected together by bolts and nuts longitudinally and transversely It is presented steel plates, plain or corrugated are used to support the soil during excavation. Liner Plate Liner plates are generally made 16" by 36" with a 2" flange on all four sides. The latter dimension along the circumference of tunnel section. The advantage of this size is that the number of plates required is equal to the diameter of the tunnel in feet The size of the plates is 0.9 * 0.4 with a flange of 0.05metre This method used in subaqueos strata Trench braces may be used if support needed To ex
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