Prediction Model of Rock Displacement and Porosity in Deep Hole Blasting

DOI

10.2991/978-94-6463-780-9_47How to use a DOI?

Keywords

deep hole blasting; porosity; displacement patterns; explosion mechanics; computational model

Abstract

In mine production, the prevention and control of toxic and harmful gases after blasting is very important. Extraction is an effective method to reduce toxic and harmful gases. Efficient extraction depends on the accurate grasp of the gas distribution position. In order to grasp the distribution law of rock cracks after blasting and optimize the extraction scheme, this paper constructs a new mathematical model to calculate the change of displacement and porosity after blasting based on quasi-static and dynamic theory, and takes the blasting of Kuangou Coal Mine as an example. The results show that the ratio of the total displacement under the action of blasting shock wave to the total displacement under the action of blasting gas is 1: 2.537. The ratio of the total displacement under the action of blasting shock wave to the radius of the crushing zone under the action of blasting gas is 1: 1.33, and the ratio of the radius of the fracture zone is 1: 1.14.From the relationship of radius ratio, it can be seen that the blasting shock wave mainly leads to the generation of rock cracks, and the action of blasting gas mainly leads to the expansion of cracks. The toxic and harmful gases after blasting are mainly concentrated in the blasting cavity and the fracture space in the crushing area. When optimizing the blasting scheme, the main direction should be to increase the range of fracture zone and reduce the range of crushing zone. By optimizing the blasting parameters such as hole diameter, the extraction effect of toxic and harmful gases after blasting can be effectively improved, which provides theoretical basis and practical guidance for gas control in engineering blasting.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Jian Chen
AU  - Jie Chen
AU  - Zehao Jing
AU  - Xuepeng Wang
PY  - 2025
DA  - 2025/07/03
TI  - Prediction Model of Rock Displacement and Porosity in Deep Hole Blasting
BT  - Proceedings of the 2025 International Conference on Engineering Management and Safety Engineering (EMSE 2025)
PB  - Atlantis Press
SP  - 518
EP  - 535
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-780-9_47
DO  - 10.2991/978-94-6463-780-9_47
ID  - Chen2025
ER  -