Tracing leaks in walls of e.g. cellar or excavated pit, by injecting fluid into soil and monitoring wall with infra-red camera

摘要

#CMT# #/CMT# A detection fluid having a temperature which is different to that of the wall (2) is injected (4) into the soil (3) close to the wall and an infra-red camera (10) is positioned to detect any fluid leaking through the wall from the soil. Water is preferably used as the fluid. #CMT# : #/CMT# An independent claim is also included for a method for tracing leaks in layers of e.g. clay, located below ground level by injecting a detection fluid having a temperature which is different to that of the soil into the latter and positioning an infra-red camera at the surface to detect any fluid leaking through the layer. #CMT#USE : #/CMT# For detecting and tracing leaks in walls located below ground level, e.g. in cellars or excavated pits, especially in brick, stone or concrete walls. #CMT#ADVANTAGE : #/CMT# Leaks can be traced more quickly. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The figure shows an excavated pit with a dam wall being inspected for leaks using this method. 1 : excavated pit 2 : dam wall 3 : soil 4 : injection lance 10 : infra-red camera.