爆炸物
钻孔
岩石爆破
地质学
断裂(地质)
岩土工程
应力波
压力(语言学)
岩体分类
材料科学
复合材料
语言学
哲学
化学
有机化学
作者
M.M. Dehghan Banadaki,B. Mohanty
标识
DOI:10.1016/j.ijimpeng.2011.08.010
摘要
Blast-induced fracture networks largely control the degree of rock fragmentation and final outcome of blasting operations. Precise laboratory-scale single-hole blast experiments have been carried out in cylindrical samples of a well-characterized granitic rock to study stress wave induced fracture patterns. The rock samples measured 144 mm in diameter and 150 mm in length. Detonating cord was employed as the explosive source in the centrally loaded boreholes in the rock samples. In this paper, the measured mechanical properties, experienced peak pressure values inside the rock samples and blast-induced fracture patterns are used to find the parameters of Johnson-Holmquist model in ANSYS AUTODYN. The resulting numerical fracture patterns are comparable to those obtained from experiments at macro-scale level.
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