采矿与安全工程学报2017，Vol.34Issue(4)：775-781,7.DOI:10.13545/j.cnki.jmse.2017.04.024
ACSW-SGC相似材料单轴压裂声发射特性研究
The acoustic emission characteristics of the uniaxial fracture in the similar material of ACSW-SGC
摘要
Abstract
To study the acoustic emission characteristics of similar materials, sand was chosen as the aggregate with cement and amylum as adhesive and water as solvent to make the similar material of ACSW-SGC (A for Amylum, C for Cement, S for Sand, W for Water, S for Solid, G for Gas, and C for Couple). The acoustic emission characteristics of the uniaxial fracture in the similar material of ACSW-SGC were studied with the YYW-II type of automatic without side limit pressure gauge and AE tester. The experiment results have shown that there is a close relationship between acoustic emission energy release and fracture development during uniaxial fracture; the acoustic emission energy release can be divided into five phases: the phase of energy storage, the stage of flexible energy release, the stage of broken energy release, the stage of repeated broken energy release, and the stage of energy balance. The main fracture rifts appear with bone and glue ratio ranges from 1:10 to 1:50, and the average change rate of energy release from similar material ranges from 5.85% to 9.83% with the in-crease of amylum contents. The average change rate of the energy release ranges from -5.92% to -3.78% with the increase of bone and glue ratio and amylum content from 0 to 50 g. The energy release caused by main fracture in the sample increases with its compressive strength, which shows a good synchro-nism. The research will provide test foundation for the solid-gas coupling physical simulation experi-ments of the overburden strata breakage and gas transportation.关键词
ACSW-SGC相似材料/力学参数/声发射特性/能量变化率Key words
ACSW-SGC similar material/mechanics parameter/acoustic emission characteristics/energy change rate分类
矿业与冶金引用本文复制引用
赵鹏翔,李树刚,高锦彪,肖鹏..ACSW-SGC相似材料单轴压裂声发射特性研究[J].采矿与安全工程学报,2017,34(4):775-781,7.基金项目
国家自然科学基金科学仪器基础研究专款项目(51327007) （51327007）
国家自然科学基金项目(51604219,51174157) （51604219,51174157）
中国博士后基金面上项目(2016M602843) （2016M602843）
