Title: Technology for drilling hole sublevel filling water and measuring leakage by blowing
Application Number: 90106348 Application Date: 1990.12.25
Publication Number: 1062974 Publication Date: 1992.07.22
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01D21/00,G01M3/02,G01N19/08
Applicant(s) Name: Shandong Mining Industry College Address: 271019
Inventor(s) Name: Sun Zhenpeng
Attorney & Agent: QU LAIYIN
Abstract:
     This leakage test technique aims to determine the developing condition of crack in rock body or the damaged depth and range of mining or enginneering wall rock. According to this invention, a water and air two-purpose leakage test instrument, along with other instruments and meters, is used to measure the leakage of any hole at elevation or depression angle by filling water or air into the drilled hole plugged at both ends for direct gaining continuously observed data at different plug depth. Compared with present leakage-testing methods, it features measurement of the hole inclined up, saving cost and reliable data.
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