Joint processing of surface and underground microseismic monitoring data in hard mineral mining

Loginov, G.; Yaskevich, Sergey; Duchkov, Anton A.; Serdyukov, A. S.

doi:10.1134/s1062739115050125

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…Loginov G.N. et al [19] discussed the optimization of microseismic monitoring in hard ore mining and developed a program to estimate the precision of microseismic monitoring. Kurlenya M.V.…”

Section: Introductionmentioning

confidence: 99%

Monitoring and Analysis of Deformation Evolution Law of Fault Activation Caused by Deep Mining in Shizishan Copper Mine, China

Guo

Luo

2022

Applied Sciences

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In order to study the deformation evolution law of fault activation caused by deep mining in Shizishan Copper Mine, China, a monitoring system for fault activation slip is designed and implemented on the basis of the field investigation of footwall fault activation of the main orebody in the mining area. The displacement and stress of the fault are monitored by the multipoint displacement meter, bolt stress meter, and borehole stress meter. According to the measured results, the activation deformation laws of fault F2, fault F3, and fault F4 during deep continuous mining are analyzed in detail. The results show that, when the influence range of underground mining spreads to the fault, the increase in the additional tensile stress on the fault plane will reduce the shear strength of the fault and increase the slip of the fault. When the shear stress exceeds the shear strength of the fault plane, the shear failure of the fault plane occurs, the rock mass on both sides of the fault loses stability, and the fault becomes active; when the orebody in the deep sublevel 14 and sublevel 15 were continuously stoped, the development of the mining influence area to fault F2 leads to fault F2’s activation. When stoping the orebody in sublevel 16, fault F3 also activates. With the continuous downward mining of the deep part, the slip amount increases continuously. The fault activation sequence is from fault F2 to fault F3, and then to fault F4.

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Section: Introductionmentioning

confidence: 99%

Monitoring and Analysis of Deformation Evolution Law of Fault Activation Caused by Deep Mining in Shizishan Copper Mine, China

Guo

Luo

2022

Applied Sciences

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“…In the process of deformation and fracture, the loaded coal/rock will produce a certain acoustic/seismic response, such as acoustic emission (AE) and microseismic (MS) signals, which is an important means to track its crack propagation, deformation, and fracture characteristics 30 , 31 . Based on the vibration waveforms monitored by AE and MS systems during the deformation and fracture process of coal and rock, basic information such as the location, frequency, and energy of cracks can be obtained directly 32 – 35 . Furthermore, the AE/MS characteristics throughout the deformation process, fracture, and instability of coal/rock can be further analyzed to reflect their evolution characteristics.…”

Section: Introductionmentioning

confidence: 99%

Research on instability characteristics and precursory effect of coal-rock parting-coal structures

Liu

Wang

et al. 2022

Sci Rep

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The slip and instability mechanisms of coal-rock parting-coal structures under uniaxial loading conditions were investigated using experiments and case verification. The slip and the corresponding precursors were described by monitoring the displacement, strain, and acoustic emissions (AEs) of coal and rock parting blocks during testing, and the experimental results were verified by analyzing the microseismic (MS) effects during the working face advancing in a coal seam bifurcation area. The main conclusions were as follows: (1) each slip of the discontinuities sandwiched between coal and rock parting produced shear and tensile cracks, but the shear cracks was dominant; (2) for the instability mode that was characterized by low peak stress, high energy release, and a stable b value of AE, each slip corresponds to a peak frequency of AE, which can reveal the final instability mode; (3) the sudden drop in the fault total area of AE can be regarded as a precursor for the warning fracture or slip instability of a discontinuity; and (4) the MS events in the coal seam bifurcation area were mainly characterized by a wide frequency and high amplitude, especially near the coal bifurcation line, where there were obvious characteristics of low-frequency shear fracture for the MS events. This study is relevant for the early warning of coal-rock dynamic disasters triggered by the slip, fracture, and instability of coal-rock parting compound structures in coal mines.

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Acoustic emission of rock mass under the constant-rate fluid injection

Shadrin

Клишин

2018

IOP Conf. Ser.: Earth Environ. Sci.

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Joint processing of surface and underground microseismic monitoring data in hard mineral mining

Cited by 7 publications

References 4 publications

Monitoring and Analysis of Deformation Evolution Law of Fault Activation Caused by Deep Mining in Shizishan Copper Mine, China

Monitoring and Analysis of Deformation Evolution Law of Fault Activation Caused by Deep Mining in Shizishan Copper Mine, China

Research on instability characteristics and precursory effect of coal-rock parting-coal structures

Acoustic emission of rock mass under the constant-rate fluid injection

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