The mechanism of formation of technogeny cracks (cracks of stratification and perpendicular flog cracks), including water spending is stated at primary and repeated mine layers of massif of rocks on coal deposits. It is shown possibility of application of a method of typical curves for an estimation of development of technogeny water spending cracks.
In the article the calculation moving and deformations earthly surface is considered by the method of typical curves at development coal deposits an underground method. Equalization for analytical expression typical curves is offered. The results comparison the sizes set and got on a formula are resulted for Donetsk and Kizelovsk coal pools.