The influence of gypsum karst on hydrotechnical constructions in Perm region

ABSTRACT: The presence gypsum rocks in the foundations of hydraulic structures cause engineering geo-logical conditions that are difficult and unfavorable for safe construction. Hydrotechnical construction in such soluble rock regions can create conditions of enhanced dissolution and karst development that can threaten the structures. Throughout the world there are examples where the dissolution of gypsum in dam foundations has resulted in tragic consequences. Also this article deals with the pollution problem of the Каmа reservoir during the mining of Polaznenskoe oil deposit. The main factor contributing to the pollution is the intensive karst processes of reservoir banks. Two methods were developed, tested and patented for controlling this pollution.