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Global Geology 2009, 12(4) 210-214 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Finite element ana lysis for blasting law of jointed rock mass |
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YU Qingyang, NIE Lei and ZHOU Nengjuan |
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College of Construction Engineering, Jilin University, Changchun 130026, China |
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Abstract：
On the basis of Mises strength theory, rock models are built including vertical, horizontal and diagonal joints to simulate jointed rock mass under blasting load by using FEM. The dynamic procedures of jointed rock mass under blasting are quantified and the effective stress-time curves of typical elements are compared to analyze the barrier of joints to the stresswave. The blasting law was studied according to the process of computer simulation and the effect of blasting, and some suggestions were given for solving the problems of overbreak and underbreak. |
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Keywords：
jointed rock mass
FEM
simulation
blasting law
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Received Revised Online: |
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