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Search of the underground objects during a lining of underground communicationsThe lining of communications a underground way allows to carry out operations under roads without a stop on them movements, under houses and other objects, not influencing in on their normal operation. However thus always there is a probability that the tunneling shield may meet an obstacle which it can not overcome on the way. It may be boulders, the foundation of the destroy construction, metal or reinforced-concrete armature etc.
So, for example, at a lining of a line for a sewer along embankment Sinopskaya (SPb) the tunneling shield which has diameter of 1 m and moved on depth of 6-7 m, has met an obstacle which at the further inspection showed as the remains of the church foundation once taking place there.
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