花岗岩破裂及突水红外时空演化实验研究

发布时间：2018-04-27 18:45

本文选题：岩石破裂 + 突水　；参考：《矿业研究与开发》2017年09期

【摘要】：通过对无水、无压水、承压水作用下花岗岩加载破裂失稳实验进行红外监测,研究花岗岩破裂及突水过程中红外辐射时空演化特征,以此实现对巷道掌子面破裂及突水灾害的监测和预报。实验结果表明:掌子面前方不含水体时,时序特征表现为前期线性升温,破裂前升温加速;空间上表现为破裂前高温区包围低温区。含无压水体时,时序上表现为温度曲线呈锯齿状;空间上表现为高、中、低温度区域划分,高温场破裂。含承压水体时,时序上表现为红外曲线呈升、降温交替变化,空间上表现为温度大幅度降低,呈现破裂低温场。利用红外监测技术,从时空特征角度综合分析,提取花岗岩巷道破裂及突水的前兆信息,可以降低实际工程中巷道突水事故的发生。
[Abstract]:Based on the infrared monitoring of granite failure under the action of anhydrous, pressure-free water and confined water, the temporal and spatial evolution of infrared radiation in the process of granite rupture and water inrush is studied. In this way, the monitoring and prediction of tunnel face rupture and water inrush disaster are realized. The experimental results show that when there is no water in front of the face of the palm, the time series features are linear warming in the Prophase, accelerating before the rupture, and surrounding the low temperature region in the high temperature region before the rupture in space. When there is no pressure water body, the temperature curve is serrated in time series, and the high, middle and low temperature regions are divided in space, and the high temperature field ruptures. When the water body is under pressure, the time series shows that the infrared curve is ascending, the temperature decreasing alternately, and the space showing a large decrease in temperature, showing a rupture low temperature field. By using infrared monitoring technology and synthetically analyzing from the angle of space-time characteristics, the precursor information of granite roadway rupture and water inrush can be extracted, which can reduce the occurrence of roadway water inrush accident in practical engineering.
【作者单位】：华北理工大学信息工程学院;河北省矿业开发与安全重点实验室;华北理工大学矿业工程学院;
【基金】：河北省高等学校科学技术研究项目(QN2016125,QN2016124) 华北理工大学科学研究基金项目(Z201315)
【分类号】：TD745.2

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