Abstract
The article presents a world experience in the application of waterproofing devices combined type in the mine shafts of potash and salt mines. A possibility of applying a chemical sealing ring together with wooden water seal has been considered. The article presents testing of physical properties of the chemical sealing ring material designed for sealing the support of the mine shafts of potash mines. The article shows an efficiency of the chemical sealing ring which suggests its use as an additional waterproof gasket together with wooden water seal.
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