FORECASTING OF A DIPPING INTO A GROUND OF SUPPORTING STRUCTURE

     When the channel of the river is displaced concerning a line of a tectonic disturbance, one of support of the bridge through this river may appear in a zone of a tectonic disturbance. Thus one support of the bridge will be in a zone of the reduced load-carrying ability of a ground.
     At research of the railway bridge in area of northern deposit of hydrocarbons (peninsula Yamal) we have found out, that northern support of the bridge is in the centre of a tectonic disturbance. Thus, northern support of the bridge is in a zone of the reduced and constantly decreasing load-carrying ability of a ground.

     It is rather typical situation and if the bridge is in such conditions one support of it must be repaired practically continuously.
     It is very important to understand, that use of a different sort of concrete injections within the limits of zones of the lowered bearing capacity of a ground will not give positive results. Improvement due to application of injections may be only temporary as the increase of a weight of a construction which as a result of it will arise, only will increase acceleration of immersing in a ground.
     In conditions of the North all troubles with building are explained by influence of a permafrost. Our researches have shown, that it not so, and that the main originator and there are tectonic disturbances.