THEORETICAL ANALYSIS AND FLAC3D SIMULATIONS ON ROCK CRACKS PROPAGATION CRITERION UNDER BLASTING LOADING

被引：0
|
作者：
Liu, Ning [1 ]
Zhu, Wei-Shen [1 ]
Xin, Xiao-Li [1 ]
机构：
[1] Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250061, Peoples R China
来源：
CONTROLLING SEISMIC HAZARD AND SUSTAINABLE DEVELOPMENT OF DEEP MINES: 7TH INTERNATIONAL SYMPOSIUM ON ROCKBURST AND SEISMICITY IN MINES (RASIM7), VOL 1 AND 2 | 2009年
关键词：
D O I：
暂无
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Considering the fracture mechanics, this paper analyzes the stress intensity factor under blasting loading and initial geostress. The rock crack's propagation criterion is introduced and the method of calculating the propagation zone is obtained. In order to prove its feasibility and rationality, one tailrace tunnel is analyzed by dynamical calculation of FLAC3D. The cracks propagation zone is illustrated. The results show the propagation zone is approximately 90 similar to 100 times of the cylindrical charge, and are good coincidence with the results from the blasting experiments.
引用
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页码：531 / 534
页数：4
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