基于多参量归一化的花岗岩巷道岩爆预测试验研究

发布时间：2018-05-30 11:44

本文选题：岩石力学 + 巷道岩爆　；参考：《岩土力学》2016年01期

【摘要】：通过室内模拟花岗岩巷道岩爆试验,基于线性函数转换的归一化算法,将试验中获得的声发射场和红外温度场等多参量进行归一化处理,在分析其原始曲线特征的基础上,分析各参量在同一尺度下的演化特征,综合研究花岗岩巷道岩爆前兆。研究结果表明:声发射事件率、声发射能率、最高和最低红外辐射温度均适合作为岩爆灾害预测的主要参数。岩爆发生过程中各参量经过归一化处理,在统一尺度下能够快速、有效地识别岩爆发生的前兆。声发射能量加速释放是岩爆发生的早期预警信息;声发射平静期可作为岩爆灾害预警与采取控制措施的关键时期;最低辐射温度突降和最高辐射温度突增表明岩爆随时都有可能发生,这是岩爆发生的征兆。试验结果为岩爆灾害预测研究提供了新的方法和依据。
[Abstract]:Based on the normalized algorithm of linear function conversion, the acoustic emission field and infrared temperature field obtained in the experiment are normalized by simulating the rock burst test of granite roadway in laboratory, and the original curve characteristics are analyzed based on the analysis of the characteristics of the original curve. The evolution characteristics of each parameter in the same scale are analyzed, and the precursor of rock burst in granite roadway is studied synthetically. The results show that the acoustic emission event rate, acoustic emission energy rate and the highest and lowest infrared radiation temperature are all suitable for the prediction of rock burst disaster. In the process of rock burst occurrence, the parameters can be normalized, and the precursor of rock burst can be recognized quickly and effectively in the unified scale. The accelerated release of acoustic emission energy is the early warning information for the occurrence of rock burst, and the quiet period of acoustic emission can be used as the key period for early warning and control measures of rock burst disaster. The sudden drop of the lowest radiation temperature and the sudden increase of the maximum radiation temperature indicate that the rockburst may occur at any time, which is a sign of the occurrence of the rockburst. The test results provide a new method and basis for the prediction of rock burst.
【作者单位】：华北理工大学矿业工程学院;华北理工大学河北省矿业开发与安全技术重点实验室;东北大学资源与土木工程学院;
【基金】：国家自然科学基金(No.51174071,No.51374088) 河北省自然科学基金(No.E2012209047) 河北省高等学校科学研究计划(No.QN2014067)~~
【分类号】：TD315

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