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Title of Journal: Rock Mech Rock Eng

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Abbravation: Rock Mechanics and Rock Engineering

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Springer Vienna

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DOI

10.1002/asjc.935

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1434-453X

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Microseism Induced by Transient Release of In Situ

Authors: Jianhua Yang Wenbo Lu Ming Chen Peng Yan Chuangbing Zhou
Publish Date: 2012/09/28
Volume: 46, Issue: 4, Pages: 859-875
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Abstract

During deep rock mass excavation with the method of drill and blast accompanying the secession of rock fragments and the formation of a new free surface in situ stress on this boundary is suddenly released within several milliseconds which is termed the transient release of in situ stress In this process enormous strain energy around the excavation face is instantly released in the form of kinetic energy and it inevitably induces microseismic events in surrounding rock masses Thus blasting excavationinduced microseismic vibrations in highstress rock masses are attributed to the combined action of explosion and the transient release of in situ stress The intensity of stress releaseinduced microseisms which depends mainly on the magnitude of the in situ stress and the dimension of the excavation face is comparable to that of explosioninduced vibrations With the methods of time–energy density analysis amplitude spectrum analysis and finite impulse response FIR digital filter microseismic vibrations induced by the transient release of in situ stress were identified and separated from recorded microseismic signals during a blast of deep rock masses in the Pubugou Hydropower Station The results show that the lowfrequency component in the microseismic records results mainly from the transient release of in situ stress while the highfrequency component originates primarily from explosion In addition a numerical simulation was conducted to demonstrate the occurrence of microseismic events by the transient release of in situ stress and the results seem to have confirmed fairly well the separated vibrations from microseismic records


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Other Papers In This Journal:

  1. Development of Rock Engineering Systems-Based Models for Flyrock Risk Analysis and Prediction of Flyrock Distance in Surface Blasting
  2. Borehole Instability in Malmberget Underground Mine
  3. The Use of Infrared Thermography for Porosity Assessment of Intact Rock
  4. A nonlinear criterion for triaxial strength of inherently anisotropic rocks
  5. Modeling of Shales in Salt-Hydrocarbon Systems
  6. An Example of Realistic Modelling of Rock Dynamics Problems: FEM/DEM Simulation of Dynamic Brazilian Test on Barre Granite
  7. Comprehensive Stability Evaluation of Rock Slope Using the Cloud Model-Based Approach
  8. Wear Performance of Saw Blades in Processing of Granitic Rocks and Development of Models for Wear Estimation
  9. Determination of Poisson’s Ratio of Rock Material by Changing Axial Stress and Unloading Lateral Stress Test
  10. Hollow Cylinder Simulation Experiments of Galleries in Boom Clay Formation
  11. Micromechanical Modelling of Stress Waves in Rock and Rock Fractures
  12. ISRM Suggested Method for Monitoring Rock Displacements Using the Global Positioning System (GPS)
  13. Determination of Geometrical and Structural Representative Volume Elements at the Baihetan Dam Site
  14. Determination of Geometrical and Structural Representative Volume Elements at the Baihetan Dam Site
  15. Some Open Issues on Rockfall Hazard Analysis in Fractured Rock Mass: Problems and Prospects
  16. Connectivity of Three-Dimensional Fracture Networks: A Case Study from a Dam Site in Southwest China
  17. Evaluating Variability and Uncertainty of Geological Strength Index at a Specific Site
  18. Hybrid Finite-Discrete Element Simulation of the EDZ Formation and Mechanical Sealing Process Around a Microtunnel in Opalinus Clay
  19. Experimental Anelastic Strain Recovery Compliance of Three Typical Rocks
  20. Significance of Geological Parameters for Predicting Water Inflow in Hard Rock Tunnels
  21. A Morphological Visualization Method for Removability Analysis of Blocks in Discontinuous Rock Masses
  22. Analysis of the Thermal and Hydraulic Stimulation Program at Raft River, Idaho
  23. Effects of Heat Shock on the Dynamic Tensile Behavior of Granitic Rocks
  24. New Rapid Evaluation for Long-Term Behavior in Deep Geological Repository by Geotechnical Centrifuge. Part 1: Test of Physical Modeling in Near Field Under Isotropic Stress-Constraint Conditions
  25. Slope Failures in the Opencast Coal Mines of Wardha Valley Coalfield in Central India: A Study
  26. System Reliability Assessment for a Rock Tunnel with Multiple Failure Modes
  27. Numerical Assessment of the Progressive Rock Fracture Mechanism of Cracked Chevron Notched Brazilian Disc Specimens
  28. Algorithmic Simulation of Flow in Rock Fractures

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