Transverse sealing in salt mines in form of masonry bond blocks - comprises compressed salt rubble with small diameter grains and containing at least ninety five per cent sodium chloride.

摘要

Grains of salt rubble have a diameter less than 0.2 millimetres and the blocks are rectangular and are made of solid salt or other suitable material. These blocks are laid and masonry bonded in voids that occur in the course of mining. The solid blocks act as bricks or stones and the fine grains of salt rubble act as mortar binding the blocks together. USE/ADVANTAGE - Blocks seal the voids in an underground salt mine against ingress of gas or liquid and also against rock fal