Title: Multi-component borehole strain seismograph
Application Number: 200610072167 Application Date: 2006.04.14
Publication Number: 1837858 Publication Date: 2006.09.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01V1/18
Applicant(s) Name: Zhong Rongrong Address: 458000
Inventor(s) Name:
Attorney & Agent: shen haiqiang
Abstract:
     This invention relates to a frequency band multi-component borehole strain seismograph which comprises: burying deeply a strain measurement probe (10) in stratum connected to a data collector (7) and computer (8) on ground by signal cables (9); arranging a multi-azimuth radial distance capacitor micrometer sensor (2) with supporting ring (21) in outside shell of (10); arranging an axial length-base rod composed by a fixed length measuring rod (22) and a mechanical fine-adjusted length rod (23) both with sensing capacitor sheets (4) on opposite end faces; inserting an inverse piezo-electric shrinking wafer (3) in (23) with wire and the wire of (4) linked to opposite terminals of ac transformer-capacity bridge circuit box with oscillation frequency more than 200KHz. This invention can by applied both in practice and research.
Time: 4
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