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Academic Journal of Engineering and Technology Science, 2019, 2(3); doi: 10.25236/AJETS.020060.

Research and Application of Chassis Resistance Line of Rock Breaking Mechanism


Pengfei Zhang1, Jun Duan1, Mengyao Wang1 and Jianxin Guo2

Corresponding Author:
Pengfei Zhang

1 Inner Mongolia University of science and technology, Baotou 014010, China
2 Ba Run Mining Co., Ltd, Baotou Steel Group, Baotou, 014080


In order to determine the best chassis resistance line in the high-step blasting of the Bayan Oboxi mine, the stress equation under the stress wave is derived from the rock fracture mechanism. Combined with the Livingston line, the derived physical parameters were used to correct the resistance line formula proposed by Langerfors U to calculate the optimal chassis line. The finite element dynamic analysis software is used to simulate the effective stress value and rock fragmentation of the equidistant unit at the bottom of the slope under the optimal chassis resistance. Finally, the field industrial test was carried out in combination with the medium-difficulty area of the Bayan Obo West Mine to verify the rationality of the chassis resistance line. Field experiments show that the chassis resistance line after blasting is 11.5 m, and the broken block is even. After the electric shovel is excavated, the pile is loose and the lower step is flat without obvious root.


Chassis resistance line, rock fracture mechanism, rock yielding, effective stress value

Cite This Paper

Pengfei Zhang, Jun Duan, Mengyao Wang and Jianxin Guo. Research and Application of Chassis Resistance Line of Rock Breaking Mechanism. Academic Journal of Engineering and Technology Science (2019) Vol. 2 Issue 3: 98-107. https://doi.org/10.25236/AJETS.020060.


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