NDLI: Research on the Energy Criterion for Rockbursts Induced by Broken Hard and Thick Rock Strata and Its Application

Content Provider	Springer Nature Link
Author	Wang, Jun Ning, Jianguo Jiang, Jinquan Bu, Tengteng Shi, Xinshuai
Copyright Year	2016
Abstract	In this study, the occurrence conditions of rockbursts induced by broken hard and thick rock strata (HTRS) in fully mechanized longwall face are investigated by dividing the surrounding rock of a roadway rib into three zones: burst-resistance zone (BRZ), burst-inoculation zone, and stable zone. On this basis, the process of impact vibration energy (released by the broken HTRS) transformation in these zones was analyzed, and theoretical equations are presented to calculate the strain energy, dissipated energy and shock vibration energy. In addition, an energy criterion associated with the critical broken length of the HTRS, the width of burst-resistance zone, and the burst proneness index was proposed to predict rockbursts induced by broken HTRS in fully mechanized longwall face. Moreover, to control these types of rockbursts effectively, a quantitative method was proposed for determining the limit broken length of the HTRS and the BRZ. The research results show that the energy criterion may forecast these typical rockbursts, and rockburst hazards can be eliminated using the proposed method.
Starting Page	731
Ending Page	746
Page Count	16
File Format	PDF
ISSN	09603182
Journal	Geotechnical and Geological Engineering
Volume Number	35
Issue Number	2
e-ISSN	15731529
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-12-16
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hard and thick rock strata Fractured interval Rockburst Energy criterion Quantitative prevention Geotechnical Engineering & Applied Earth Sciences Hydrogeology Terrestrial Pollution Waste Management/Waste Technology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Soil Science Geology Architecture Geotechnical Engineering and Engineering Geology

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