Ecology, efficiency and economy of new technologies. Methods of mud spring and loss prevention in thenchless pipe laying by directional drilling

Abstract

Environmental risks – mud springs and losses associated with ineffective measures – lead to environment pollution, increased costs of works, poor economic performance and increased number of technical risks of construction of passages. The consumption of bentonite and the volume of grout to be recycled grow, as well as the amount of works on containment of mud springs and recultivation of disturbed lands. Foam systems and discharge headers are considered as means of mud sping and loss prevention.