Study on the energy-absorbing cushion performance of roadway surrounding rock crushing zone

被引：0

作者：

Xu, Lian-Man ^{[1
]}

Pan, Yi-Shan ^{[1
]}

Zeng, Xiang-Hua ^{[1
]}

Li, Guo-Zhen ^{[1
]}

Li, Zhong-Hua ^{[1
]}

机构：

[1] School of Mechanics and Engineering, Liaoning Technical University, Fuxin

来源：

Meitan Xuebao/Journal of the China Coal Society | 2015年 / 40卷 / 06期

关键词：

Coal blocks; Crushing zone; Energy absorbing; Erosion prevention; Impact loading; Rock burst;

D O I：

10.13225/j.cnki.jccs.2014.0724

中图分类号：

学科分类号：

摘要：

In order to grasp the propagation attenuation rule of impact load in the surrounding rock breaking zone, reveal the mechanism of energy absorption and scour prevention in it, and the support performance of the support system was improved. The formation mechanism and the mechanism of energy absorption and scour prevention in the rock fragmentation zone were analyzed, and the radius of analytical solution was given. The formation mechanism and the mechanism of energy absorption and energy absorption in the rock fragmentation zone were analyzed, and the radius of the broken zone was given. In order to research energy-absorbing cushion performance of coal rock blocks, the falling ball impacts coal particles in the cylinder experimental device was adopted, and doing the energy absorbing performance tests with different size and thickness of the coal particles. The results show that the coal particles has a good energy absorbing property, the larger the coal particle is, the better the energy absorbing performance is, and the thickness of the coal particles is as well, however, when the thickness of the coal particles increases a certain extent, its thickness on the energy absorbing property is no longer obvious. Studying the buffer performance of coal particles under the impact loading, which reveals the energy absorbing mechanism of the crushing granular coal rock, and provides the basis for deep hole blasting pressure relief in roadway surrounding rock, and hydraulic fracturing and other anti shock technology. ©, 2015, China Coal Society. All right reserved.

引用

页码：1376 / 1382

页数：6

共 19 条

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