Experimental study on failure process characteristic of considered about the water-temperature of argillaceous siltstone

The change of water-temperature has an important effect on physical and mechanical properties of the rock mass underground of high temperature hydraulic tunnel and deep mining engineering.At present different water-temperature has got a less study on rock burst.This paper put research of uniaxial compression test on natural drying and five different temperatures(28℃,40℃,50℃,70℃,100℃) by argillaceous siltstone.The results show that the influence of temperature on the argillaceous siltstone water have a critical point(this study of 40℃).When the water-temperature in the range of 28℃ to 40℃,the containing-water ability of rock is "weaken".While the water-temperature is greater than 40℃,the containing-water ability of rock is "enhance".In 28~100℃,the water-temperature plays a role of "enhance" of rock physical and mechanical properties.When the water temperature rise from 28℃ to 40℃,the time-domain activity of AE increased,and the time-domain activity of AE weaken while the water temperature increased from 40℃ to 100℃.The curve of b-value and entropy can get a well reflect to the crack evolution law.In the process of formation of the main crack,the probability of accompanying-crack decreased.