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yan bao xing cheng ji li yan jiu
Pages: 34-38+54
Year: Issue:  1
Journal: Hydrogeology and Engineering Geology

Keyword:  岩爆动力学特征岩块剪切带几何形态岩体形成机理研究矿山冲击三阶段渐进破坏过程;
Abstract: Depending on the examples of rockbursts in the tunnels that they were excavated in the hard—brittle rock mass, the geometry shapes and mechanical properties of bursted section and ejected fragments, and dynamic characteristics, acustic properties of rockburst, and time—space effect of rockburst, etc, they are discussed systematically in this article. The author proposed that there are three belts on the Cross section of the tunnel, or ejectted Zone、splitted——She- ared Zone and Splitted Zone, and the progresvsie failure process of rockburst which was very paied attention to but was not solved by the rock mechanics research workers was proposed in the article. The progressive failure process is consist of three stages, the first stage is splitting, the Second is breaking by Scaring, the third is ejectting. On the basis of obove ——mentioned materials the rockburst mechanism was analysed.The process and the Zones of rockburst which were proposed by the author are a breakthrough of the rockbust mechanism.
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