... analysis of the mechanism considered. Section 4 shows some comparative computations. drainage hydraulic head bearing capacity seepage force support pressure wedge tunnel face vertical force reinforcement density Upstream Oil & Gas face stability stability Reservoir Characterization...

... into the opening and can in extreme cases completely inundate a long portion of the tunnel. Tunnel excavation under such conditions is possible only after drainage and consolidation of the ground ahead of the tunnel face. The present paper investigates the stability of the tunnel face in narrow fault zones...

..., the limits of open mode TBM operation in weak sedi- mentary rocks and the effect of advance drainage in squeezing ground) by means of three case studies: the recently completed Melen 7 Bosphorus tunnel, the soon-to-commence Lake Mead Intake No 3 tunnel construction and the future Gibraltar Strait tunnel...

..., there is neither a further possibility of its natural outflow from the lake system nor can it be achieved by draining of the lake. The lake has a hundred times larger water volume than the annual pumping amount and the drainage of the lake, even through such long periods and apart from lake water decline for a few...

...) does not have any potential aquifer in the area,(welch, 1990). 3.3 Surface preparation On completion of dumping of spoil preparation of the surface will depend on whether any agriculture or forestry is intended or possible. waste management drainage waste dump knowledge management programme...

... in the extent of waste disposal can be divided into following catagories: 2.1 Land pollution: Land degradation, land slides and soil erosion; 2.2 Water pollution: Acid mine drainage, toxic pollutants and change in hydrology; 2.3 Air pollution: Dust, gases & smoke; 2.4 Noise pollution; 2.5...