Patent ID: 6543968
Filing Date: 2003-04-08
Classification: E02B,E03F,Y02A

Abstract:
A method for bypassing the flow of water in an earthen canal to successively isolate and line distinct sections of the canal comprising the steps of(a) forming a plurality of portable modular sections by a method comprising the following steps: (i) providing a plurality of generally vertical walls and a plurality of gates; (ii) attaching a plurality of gates to each vertical wall; and (iii) assembling one or more generally vertical walls together in such a manner as to form a portable modular section; and (b) submersing and installing each portable modular section at individual predetermined locations in the canal, the generally vertical walls of each portable modular section having been chosen so as to have sufficient height to extend down to sufficient depth to provide a water tight seal and to protrude above the water level plus the height required to extend above the lowest point of the surrounding canal banks, each of the plurality of portable modular sections being installed such that each portable modular section is in close proximity to a canal bank or to an adjoining portable modular section, such that one assembly of portable modular sections, hereafter referred to as a bulkhead, bifurcates the canal upstream of the section to be isolated and such that another assembly of portable modular sections, hereafter referred to as a bulkhead, bifurcates the canal downstream of the section to be isolated; and (c) providing a plurality of pipelines whose length extends from the upstream bulkhead to the downstream bulkhead; and providing a plurality of pipelines of shorter length; and (d) placing the plurality of pipelines within the canal; and (e) attaching the pipelines to the bulkheads; and (f) operating the gates whereby the flow of water will be diverted into the pipelines bypassing the section to be lined; and (g) after the section is lined, operating the gates diverting said flow of water into the lined section; and (h) removing and repositioning the bulkheads and pipelines to the succeeding section of the canal to be isolated.