Research and application of deep well detector in safety evaluation of wellbore in closed water bodies
SHI Zhengjing
Abstract：The safety evaluation of long-term closed water bodies in coal mines has always been a sig-nificant challenge.Conventional methods often involve using deep well detectors to conduct video_a-nalysis of the well walls,which can only provide visual feedback and are not precise enough to accu-rately detect features under normal conditions,requiring calibration for system errors.In particular,when the water is turbid,it is difficult to see the well walls clearly and to understand the composition of the turbid substances.This article is based on more than a year of data from two different deep well detectors used for video_analysis at two different times.It also involves the use of a self-made conical tube to collect sediments and fixed water intake device to collect water samples from the bottom of the well.Through sediment lithological identification and hydrochemical analysis,the safety status of the wellbore was determined.This solved the problem of checking the integrity of closed wellbore under"small disturbances"providing a reference for the inspection and verification of wellbores or boreholes under similar conditions.
Keywords：deep well detectorsubaqueouswellboresafety evaluationapplication
Publication Date：2025-06-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 37-42 )