Affiliation:
1. Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province Shaoxing University Shaoxing 312000 China usx.edu.cn
2. College of Civil Engineering Qilu Institute of Technology Jinan 250200 China qlit.edu.cn
3. School of Civil Engineering Shaoxing University Shaoxing 312000 China usx.edu.cn
4. School of Resources and Environmental Engineering Jiangxi University of Science and Technology Ganzhou 341000 China jxust.edu.cn
5. School of Resources and Safety Engineering Central South University Changsha 410083 China csu.edu.cn
Abstract
AbstractThe propagation process of blasting vibration has always been a difficult problem affecting the stability of high slopes in open-pit mines. Taking the Jianshan Phosphorus Mine as the research background, combined with engineering geological investigation, field blasting test, blasting vibration monitoring, numerical simulation technology, and theoretical analysis, the three-dimensional dynamic stability of the adjacent high slope after blasting vibration was systematically studied. In our study, a small-diameter buffer shock-absorbing blasting technology near the slope was proposed, which greatly improved the production efficiency. Through regression analysis of a large amount of vibration test data, the law of blasting vibration propagation in Jianshan stope and Haifeng stope was obtained. In addition, by establishing four three-dimensional geomechanical numerical models, the slope’s own frequency, damping characteristics, and dynamic response acceleration distribution after detonation were studied, respectively. On the other hand, under the action of Ei Centro wave with 8-degree seismic intensity, the maximum total acceleration and maximum total displacement of the slope were calculated and analyzed. Both the explosion unloading of the 8-degree earthquake and the Ei Centro wave simulation results showed that the high slope near the Jianshan Phosphorus Mine was generally in a stable state. Thus, this study can provide technical support and theoretical guidance for mine blasting.
Funder
State Key Laboratory of Safety and Health for Metal Mines
China Postdoctoral Science Foundation
National Natural Science Foundation of China
Reference60 articles.
1. Research on vibration effect of tunnel blasting based on an improved Hilbert-Huang transform;Zhao;Environmental Earth Sciences,2021
2. Research of the technical seismicity due to blasting works in quarries and their impact on the environment and population;Feher;Applied Sciences,2021
3. Propagation and prediction of blasting vibration on slope in an open pit during underground mining;Jiang;Tunnelling and Underground Space Technology,2017
4. Stability assessment and feature analysis of slope in Nanfen Open Pit Iron Mine;Yang;International Journal of Mining Science and Technology,2012
5. The analysis of influence of the blasting vibration in slope engineering design for open pit mining;Ye;Mining and Metallurgical Engineering,1987
Cited by
59 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献