%0 Dataset
%T Data set of fracture types of sandstone sound sources under the action of multiple factors in freeze-thaw environments (2024.7)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/b4efa19e-352e-4a7b-b89e-4838a24e0611
%W NCDC
%A xu pei yun
%A zhang xiao long
%K Keywords alpine Kuangqu;freeze-thaw action;sandstone slope;acoustic emission;RA-AF value;rupture mode
%X The damage and fracture mechanism of sandstone in cold and high-altitude areas under freeze-thaw environment is directly related to the stability of slopes and disaster prevention and control. This article investigates the coupled effects of water saturation, freeze-thaw temperature difference, and cycle number on the failure evolution process of sandstone based on axial stress loading system and acoustic emission system. By using acoustic emission monitoring technology to obtain the signal of the entire process of sample fracture, based on the collected time-domain parameters, a density distribution map of acoustic emission data is constructed using RA-AF parameters to identify the damage mode of the sample under different conditions. At the same time, combined with sound source three-dimensional positioning technology, the spatiotemporal distribution characteristics of crack rupture source points are analyzed to reveal the spatial evolution law of fracture types