Effect of prefabricated crack with different fillings on blasting cracks propagation

Yang Xin; Pu Chuanjin; Liao Tao; Xiao Dingjun

doi:10.11883/1001-1455(2016)03-0370-09

Volume 36 Issue 3

Oct. 2018

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Yang Xin, Pu Chuanjin, Liao Tao, Xiao Dingjun. Effect of prefabricated crack with different fillings on blasting cracks propagation[J]. Explosion And Shock Waves, 2016, 36(3): 370-378. doi: 10.11883/1001-1455(2016)03-0370-09

Citation:

Yang Xin, Pu Chuanjin, Liao Tao, Xiao Dingjun. Effect of prefabricated crack with different fillings on blasting cracks propagation[J]. Explosion And Shock Waves, 2016, 36(3): 370-378. doi: 10.11883/1001-1455(2016)03-0370-09

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Effect of prefabricated crack with different fillings on blasting cracks propagation

doi: 10.11883/1001-1455(2016)03-0370-09

Yang Xin^{1, 2},
Pu Chuanjin^{1, 2
,
,},
Liao Tao^{1, 2},
Xiao Dingjun^{1, 2}

1.
School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
2.
Non-Coal Mine Safety Technology Key Laboratory of Sichuan Province Colleges and Universities, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

Received Date: 2014-10-10
Rev Recd Date: 2015-01-28
Publish Date: 2016-05-25

Abstract

Abstract

To study cracks propagation rules on filled fissured rock about dynamic fracture, air, clay and water were used as fillings of organic glass prefabricated fissures, under the condition of different angles and distances from blasthole to prefabricated fissures, the explosion experiments on three kinds of different fillings models were carried out through single detonator loading. The results show that blasting cracks almost cannot surmount prefabricated fissures; total cracks and left end wing cracks of models with filling air all most are larger than models with filling clay and water; location and length of the longest cracks are related to propagation direction and energy of reflected stress wave; right end wing cracks of most models with filling air increase with the increase of angles, but right end wing cracks of models with filling clay are first increased and then decreased; blasting cracks propagation are sensitive to filling medium type.
- mechanics of explosion,
- cracks propagation,
- filled fissure,
- explosive stress wave

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References(13)

References

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