Fast growth of metropolises underground space development all over the world multiplies the number of opponents of the permanent exterior drainage (stratum drainage and underdrainage) which is dangerous both from the point of view of suffusion processes in the unstable soil body development and from the point of view of its operation unreliability (gradual silting-up and breakage)
In this well illustrated with figures and photos monograph there are considered three methods of waterproofing reliability ensuring made of the geo-synthetic materials for the most crucial underground structures which are erected using the «diaphragm walls» method under the adverse hydrogeological conditions: two principally different methods and one as a modernized symbiosis of the first two methods developed especially for the construction «top-down».
The following construction solutions and execution technology are considered:
- waterproofing with internal additional drainage layer;
- waterproofing with a sectional system of leakage suppression;
- waterproofing with internal additional drainage layer and a sectional system of sealing.