Microseismic source location method based on a velocity model database and statistical analysis

Chen, Bingrui; Li, Tao; Zhu, Xiancan; Wei, Fanbo; Wang, Xu; Xie, Ming-Xing

doi:10.1007/s12517-021-08311-9

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…Li et al [6,7] determined the instability areas of underground powerhouses and slopes of hydropower stations which effectively guided the construction of relevant areas. Meanwhile, with the development of technology, there are a number of mature microseismic monitoring systems having emerged in the world, such as the ESG microseismic monitoring system (Canadian), the ISS microseismic monitoring system (South African) and the SSS microseismic monitoring system (China) [8]. Several cases show that microseismic monitoring is of great significance to the research on powerhouse stability and early damage warning.…”

Section: Introductionmentioning

confidence: 99%

Microseismic Activity Characteristics of Surrounding Rock Under Shaft Excavation Disturbance at Yebatan Hydropower Station

Wang

Chen

He³

et al. 2022

Advances in Transdisciplinary Engineering

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The high geostress and complex geological structure of underground powerhouse at Yebatan Hydropower Station frequently result in surrounding rock failure which delay construction schedule. Based on the microseismic monitoring technique, the microseismic activity characteristics of surrounding rock failure is analyzed under excavation disturbance in the intersection area of the shaft and the 2# drainage gallery. The results show that the microseismic events are concentrated in the failure area of surrounding rock, the cumulative energy is stably increasing and then rapidly increasing, the apparent stress contour illustrates the distribution of stress concentration. The evolution law of the energy index is continuously increasing and maintaining a high level, then suddenly decreasing, last increasing again and the cumulative apparent volume is continuously increasing and suddenly increasing. In addition, it discusses the failure evolution and mechanism of surrounding rock. Finally, the results can provide important reference and technical support for construction.

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Section: Introductionmentioning

confidence: 99%

Microseismic Activity Characteristics of Surrounding Rock Under Shaft Excavation Disturbance at Yebatan Hydropower Station

Wang

Chen

He³

et al. 2022

Advances in Transdisciplinary Engineering

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show abstract

“…In the field of microseismic monitoring, there have been abundant research and many achievements on the arrival picking, location, and focal mechanism, and good results have been achieved in engineering applications [4]. However, there is A small amount of research on source parameters such as source spectrum and radiation energy, and the calculation of source parameters mainly depends on the calculation of source spectrum.…”

Section: Introductionmentioning

confidence: 99%

Study on the Calculation of Attenuation Quality Factor Q-Value in Microseismic Monitoring: Results from Two Rock Engineering Cases

Zhu

Chen

Cao

et al. 2022

Advances in Transdisciplinary Engineering

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The quality factor Q-value is one of the important parameters for calculating microseismic source parameters, and it is also an important reference for reflecting geological information. However, there are few studies on the Q-value of rock engineering at present, and its understanding needs to be further improved. For the above reasons, we adopted the widely used Atkinson method to calculate Q in two rock engineering. The results show that the Q in the microseismic monitoring is mainly on the order of 101∼102, which is generally smaller than the Q in earthquake seismology. When the frequency is less than 500 Hz, the Q is a constant, and when the frequency is greater than 500 Hz, it increases with the frequency. The research results also show that the Q in the engineering with high in-situ stress and complete rock mass structure is larger than that in the low in-situ stress and broken rock mass is relatively broken, indicating that the Q-value can reflect the geological information to a certain extent.

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An Inverted Heterogeneous Velocity Model for Microseismic Source Location in Deep Buried Tunnels

Liu

Xiao

et al. 2023

Rock Mech Rock Eng

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Microseismic source location method based on a velocity model database and statistical analysis

Cited by 6 publications

References 33 publications

Microseismic Activity Characteristics of Surrounding Rock Under Shaft Excavation Disturbance at Yebatan Hydropower Station

Microseismic Activity Characteristics of Surrounding Rock Under Shaft Excavation Disturbance at Yebatan Hydropower Station

Study on the Calculation of Attenuation Quality Factor Q-Value in Microseismic Monitoring: Results from Two Rock Engineering Cases

An Inverted Heterogeneous Velocity Model for Microseismic Source Location in Deep Buried Tunnels

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