Dynamic response experiment of surrounding rocks under influence of mine earthquake and mined-out area

WANG Shuai; ZHANG Xiangdong; JIA Baoxin

doi:10.11883/bzycj-2017-0286

Volume 39 Issue 1

Oct. 2018

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ZHU Xi, MOU Jin-Lei, WANG Heng, ZHANG Zhen-Hua. Damage modes of stiffened plates subjected to underwater explosion load[J]. Explosion And Shock Waves, 2010, 30(3): 225-231. doi: 10.11883/1001-1455(2010)03-0225-07

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WANG Shuai, ZHANG Xiangdong, JIA Baoxin. Dynamic response experiment of surrounding rocks under influence of mine earthquake and mined-out area[J]. Explosion And Shock Waves, 2019, 39(1): 015201. doi: 10.11883/bzycj-2017-0286

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Dynamic response experiment of surrounding rocks under influence of mine earthquake and mined-out area

doi: 10.11883/bzycj-2017-0286

College of Civil Engineering, Liaoning Technical University, Fuxin 123000, Liaoning, China

Received Date: 2017-08-21
Rev Recd Date: 2017-11-08
Publish Date: 2019-01-05

Abstract

Abstract

To find about the dynamic response patterns of surrounding rock in which mine earthquake and mined-out area exist side by side, and obtain the mechanism leading to disasters under the coupled action of the two, we conducted a percussion test on circular plates having holes and established a model for it. The model test shows that negative acceleration is monitored in the surrounding rock, that the negative acceleration is unrelated with the gravity effect, and that tangential acceleration is also monitored. With the increase of the diameter of the hole, the tangential acceleration around the circular plate exponentially increased. According to the results of the experiment, we arrived at the mechanisms leading to disasters under the coupled action of mine earthquake and mined-out area, including the intensified subsidence and caving in overburden of the goaf, the formation of the horizontal acceleration in shared rock pillars of mined-out area pointing to the source location, the formation of the horizontal shear acceleration in the upper part of the surrounding rock where mine earthquake and mined-out area exist side by side. Comprehensive analysis of the test data, size effect of mined-out area and zoom effect of mine vibration load, do not affect the test results.
- mine earthquake,
- seismic waves,
- mined-out area,
- dynamic response,
- three-underground mining

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