基于弹性应变能岩爆倾向性评价方法研究

doi:10.13722/j.cnki.jrme.2014.1590

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摘要岩爆是深部矿产资源开采与地下工程建设中必须解决的关键科学问题之一。以岩石强度与整体破坏准则为基础，从弹性应变能是岩爆发生的内在动力出发，建立了岩爆烈度分级预测模型。研究表明：该模型考虑了原岩应力(地应力)、岩体完整性、岩石抗拉强度及泊松比对岩爆影响，反映了岩爆发生的力学要求、脆性要求、完整性要求及储能要求；揭示了岩爆既可沿洞室中心呈轴对称分布，也可揭示洞室不同部位的岩爆烈度会出现明显不同。针对无、弱、中等及高岩爆活动4个级别，提出了3个分级界限值(3、10和110)。利用已有的岩爆经典模型与本文模型，对国内一些重大深部岩石工程岩爆情况进行了预测，结果表明基于弹性应变能岩爆分析模型与实际情况吻合的较好。因而，弹性应变能的岩爆分析模型，对岩爆预测具有重要的意义。

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关键词 ：岩石力学, 弹性应变能, 岩爆判据, 岩爆分级

Abstract：Rockburst is one of the key science problems in deep underground engineering and deep mining condition. On the basis of elastic strain energy and criteria for strength and structural failure of rocks，a new model for prediction of possibility and classification of rockburst was proposed considering the intrinsic relations between elastic strain energy and rockburst. The research results are as follows：(1) Three geological parameters including geostress( )，rock mass integrity designation(RID)，tensile strength( ) and poisson's ratio were adopted for establishing rockburst model and also reveals requirement for mechanics ，brittleness，integrity and stored energy；(2) Compared with the traditional model，model based on elastic energy revealed both the symmetry of rockburst classification and difference for tunnel. Corresponding to the 4 grades as intense，moderate，weak and no rockburst，the 3 boundary values are presented as 3，10 and 110．Rockburst of some rock projects at home，are used to verify this model，the results show that model based on elastic energy are close to the practical records，which proves that the model is acceptable．

Key words： rock mechanics elastic strain energy rockburst criteria classification of rockburst

引用本文:

郭建强1，赵青1，王军保2，张建3. 基于弹性应变能岩爆倾向性评价方法研究[J]. 岩石力学与工程学报, 2015, 34(09): 4-4.
GUO Jianqiang1，ZHAO Qing1，WANG Junbao2，ZHANG Jian3. RESEARCH ON ROCKBURST PREDICTION METHOD BASED ON ELASTIC STRAIN ENERGY. , 2015, 34(09): 4-4.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2014.1590 或 http://www.rockmech.org/CN/Y2015/V34/I09/4

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