红外辐射探测预测煤矿冲击地压的试验研究

Test on infrared radiation exploration technology to predict mine bumping pressure

利用单轴加载系统和红外热成像技术,对山西水峪矿的煤岩变形过程中的红外辐射变化进行了探测试验研究。研究发现,煤岩表面红外辐射温度随着载荷的增加而出现阶段性变化,裂纹扩展区、应力集中区和破碎区的红外辐射温度变化存在阶段性差异;应力集中区和裂纹扩展区的红外辐射温度比应力松弛区域和破碎区的红外辐射温度高;红外辐射温度变化可以反映出离工作面不同距离处的应力状态,以及应力集中区的范围以及应力转移过程;如果煤岩体红外辐射温度的变化规律是升温-降温-大幅度升温-大幅度降温,则预示着冲击地压发生的危险性。

With the single axial loading system and the infrared hot image technology, a probing test research on infrared radiation changes of the coal and rock deformation in Shanxi Shuiyu Mine was conducted. The research showed that the infrared radiation temperature on the coal and rock surface would be changed with the increasing of the loadings. There was a stage differential in infrared radiation temperature variation in the cracking developed zone, stress concentrated area and broken zone. The infrared temperature variation can reflect the stress status with different distances to the mining face, the stress concentrated zone area and the stress displacement process. If the variation law of the infrared temperature of the coal and rock is temperature increasing, temperature decreasing, high temperature increasing and high temperature decreasing, it predicts the danger of bumping pressure occurred.