期刊
MEASUREMENT
卷 173, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2020.108840
关键词
Monitoring-while-drilling; Microseismic system; Vibration signal; Large diameter drilling; Rock burst
By using innovative Monitoring-While-Drilling (MWD) technology with microseismic (MS) system, vibration signals can be monitored to display the actual depth of Large Diameter Drilling (LDD) holes, reflect stress state, and evaluate pressure relief effects.
Large Diameter Drilling (LDD) is a widely-used pressure relief method in underground coal mine, but LDD is now only used as a measure to reduce the occurrence probability of rock burst, the drilling difficulties and dynamic phenomena are not used efficiently. Innovative Monitoring-While-Drilling (MWD) technology is put forward by using microseismic (MS) system to monitor the vibration signals and excellent results have been achieved. MS monitoring results can display the actual depth of LDD holes and express the drilling difficulty of different depths to reflect stress state. Besides, measurement coal vibration events can reveal the degree of pressure relief. The experimental results are of great value to drilling depth supervision, abutment pressure distribution, and pressure relief effect evaluation.YY
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