工程科学学报2018，Vol.40Issue(1)：9-16,8.DOI:10.13374/j.issn2095-9389.2018.01.002
含硫充填体膨胀裂隙发育特性与单轴抗压强度的关联分析
Association analysis of expansion crack development characteristics and uniaxial compressive strength property of sulphide-containing backfill
摘要
Abstract
The cemented backfill body with sulphide-containing tailings exhibits a swelling phenomenon with an extension of curing age. The test results from the uniaxial compressive strength test of the backfill specimen with an obvious fracture are very discrete, and the mechanical parameters of the filling body will not be obtained effectively. The fractured surface image of the backfill were binarized by the digital image processing technology. Additionally, its fractal dimension was calculated and analyzed. Then, the relationship be-tween fractal dimension and uniaxial compressive strength was established. The results indicate that the cracks on the surface of the backfill specimen exhibite self-similarity. The fractal dimension increases with the development of surface cracks. There is a negative correlation between fractal dimension and uniaxial compressive strength for the sulphide-containing backfill. It is of practical signifi-cance to determine the research value of the compression test using the fractal dimension. When the fractal dimension of the surface cracks is less than a certain threshold, the results of the specimen strength tests would be reliable.关键词
含硫充填体/膨胀裂隙/数据图像处理/分形/抗压强度Key words
sulphide-containing backfill/expansion crack/image processing/fractal dimension/compressive strength分类
矿业与冶金引用本文复制引用
尹升华,邵亚建,吴爱祥,王贻明,张浩强..含硫充填体膨胀裂隙发育特性与单轴抗压强度的关联分析[J].工程科学学报,2018,40(1):9-16,8.基金项目
国家优秀青年科学基金资助项目(51722401) （51722401）
国家自然科学基金重点资助项目(51734001) （51734001）
