Detecting and measuring the position of a break in solid...

Details Detecting and measuring the position of a break in solid... Detecting and measuring the position of a break in solid...

G - Physics

01

V

324/10

G01V 3/02 (2006.01)

Patent

CA 1155178

ABSTRACT This invention relates to an apparatus and method for detecting and measuring the position of a fracture in solid formations, such as for example a grout filled borehole. An electrical element is placed the length of the borehole prior to filling the hole with grout. When the hole is filled and the grout solidified, any fracture in the grout also breaks the electrical element. The element is constructed such that its electrical capacitance is a known function of its length. The element is constructed of easily frangible materials so that it is severed in close proximity to the grout fracture. The capacitance of the element after the fracture can be measured using suitable instrumentation. The position of the break is a function of the capacitance as measured after the break.

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