초록 ▼

This invention is directed toward the detection fluid infiltration into an underground pipe system, and more particularly is directed toward the qualitative and quantitative detection of liquid leaks into, and out of, underground sewer systems. The invention is particularly suited for detecting the

This invention is directed toward the detection fluid infiltration into an underground pipe system, and more particularly is directed toward the qualitative and quantitative detection of liquid leaks into, and out of, underground sewer systems. The invention is particularly suited for detecting the infiltration of ground water into sewer systems such that the leaks can be precisely located as a precursor to time and cost efficient repairs. Fluid properties are measured with a probe at station locations which are preferably manholes. Any leaks in the system are first determined to a geographic location spanning two adjacent manholes. The locations of the leaks are further define to a very high geographic resolution by floating the probe from the upstream manhole toward the downstream manhole while continuously recording fluid property measurements at the surface of the earth. Results are preferably presented in the form of a survey map.

대표청구항 ▼

[ What is claimed is:] [1.] A method for determining a leak in a pipeline in which fluid flows, comprising the steps of:(a) providing a surface unit comprising a cable reel and a cable wound there upon;(b) providing a probe having a meter;(c) positioning, by operation of said surface unit, said prob

[ What is claimed is:] [1.] A method for determining a leak in a pipeline in which fluid flows, comprising the steps of:(a) providing a surface unit comprising a cable reel and a cable wound there upon;(b) providing a probe having a meter;(c) positioning, by operation of said surface unit, said probe within said fluid at a plurality of stations along said pipeline;(d) obtaining a fluid property measurement at each said station;(e) roughly determining the location of said leak by combining(i) observed change in station fluid property measurements for two adjacent stations, and(ii) determined geographical locations of said adjacent stations; and(f) precisely determining the location of said leak using said roughly determined location and by measuring changes in the same fluid property.