Abstract:

Gangue pipe, mainly used to transport the gangue slurry with concent ration about 30 % , is an important technical pipe for mine. The wall of pipe gets thinner and thinner and was broken into leakage as it has been becoming worn away by the sand of gangue for a long time, and it affects the production seriously. In this paper, we present an approach of the regenerating for gangue pipe by using polyethylene pipe. First, a polyethylene pipe with diameter of 130 mm and height of 6mm is inserted in the original gangue pipe, and then cement-grit slurry is injected into the space between the pipes, after slurry solidifying, the original gangue pipe is three2layer. The regenerating pipe is not only high-strength but also low-waterpower-friction-coefficient. The capacity of t ransport is improved and the cost is fell. The technology gives a novel idea for gangue pipe transport .

Key words: old gangue pipe, regenerating, polyethylene pipe, application