工程科学学报，第40卷，第1期：9-16,2018年1月 Chinese Journal of Engineering,Vol.40,No.I:9-16,January 2018 DOI:10.13374/j.issn2095-9389.2018.01.002;http://journals.ustb.edu.cn 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 尹升华，邵亚建四，吴爱祥，王贻明，张浩强 北京科技大学土木与资源工程学院，北京100083 ☒通信作者，E-mail:usthsyj@126.com 摘要含硫胶结充填体随着养护龄期的延长会出现膨胀开裂现象，存在明显裂隙的充填体试件再进行单轴抗压强度测试 其结果十分离散，已不能有效地获得充填体力学参数.在室内进行配比试验，采用数字图像处理技术对得到的充填体表面裂 隙图像进行二值化、去噪等预处理，而后计算其分形维数并分析其演化规律，且将分形维数与单轴抗压强度关联分析.研究结 果表明：充填体试件面表的裂隙存在自相似性，表面裂隙越发育，其分形维数越大：分形维数与单轴抗压强度存在负相关关 系，分形维数越小，其单轴抗压强度越高：分形维数可判别含硫充填体试件的完整性，当充填体表面裂隙的分形维数小于某阈 值时，强度试验的结果更为可靠 关键词含硫充填体；膨胀裂隙；数据图像处理；分形：抗压强度 分类号TD853.34 Association analysis of expansion crack development characteristics and uniaxial compressive strength property of sulphide-containing backfill YIN Sheng-hua,SHAO Ya-jian,WU Ai-xiang,WANG Yi-ming,ZHANG Hao-qiang School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:ustbsyj@126.com 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. KEY WORDS sulphide-containing backfill;expansion crack;image processing;fractal dimension;compressive strength 充填采矿法设计前期必须要进行充填配比试验，研究充填体在指定龄期的稳定性，常以养护28d 收稿日期：2017-03-20 基金项目：国家优秀青年科学基金资助项目(51722401)：国家自然科学基金重点资助项目(51734001)工程科学学报,第 40 卷,第 1 期:9鄄鄄16,2018 年 1 月 Chinese Journal of Engineering, Vol. 40, No. 1: 9鄄鄄16, January 2018 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 01. 002; http: / / journals. ustb. edu. cn 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 尹升华, 邵亚建苣 , 吴爱祥, 王贻明, 张浩强 北京科技大学土木与资源工程学院, 北京 100083 苣通信作者, E鄄mail: ustbsyj@ 126. com 摘 要 含硫胶结充填体随着养护龄期的延长会出现膨胀开裂现象,存在明显裂隙的充填体试件再进行单轴抗压强度测试 其结果十分离散,已不能有效地获得充填体力学参数. 在室内进行配比试验,采用数字图像处理技术对得到的充填体表面裂 隙图像进行二值化、去噪等预处理,而后计算其分形维数并分析其演化规律,且将分形维数与单轴抗压强度关联分析. 研究结 果表明:充填体试件面表的裂隙存在自相似性,表面裂隙越发育,其分形维数越大;分形维数与单轴抗压强度存在负相关关 系,分形维数越小,其单轴抗压强度越高;分形维数可判别含硫充填体试件的完整性,当充填体表面裂隙的分形维数小于某阈 值时,强度试验的结果更为可靠. 关键词 含硫充填体; 膨胀裂隙; 数据图像处理; 分形; 抗压强度 分类号 TD853郾 34 收稿日期: 2017鄄鄄03鄄鄄20 基金项目: 国家优秀青年科学基金资助项目(51722401);国家自然科学基金重点资助项目(51734001) Association analysis of expansion crack development characteristics and uniaxial compressive strength property of sulphide鄄containing backfill YIN Sheng鄄hua, SHAO Ya鄄jian 苣 , WU Ai鄄xiang, WANG Yi鄄ming, ZHANG Hao鄄qiang School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China 苣Corresponding author, E鄄mail: ustbsyj@ 126. com ABSTRACT The cemented backfill body with sulphide鄄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鄄 tween fractal dimension and uniaxial compressive strength was established. The results indicate that the cracks on the surface of the backfill specimen exhibite self鄄鄄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鄄containing backfill. It is of practical signifi鄄 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. KEY WORDS sulphide鄄containing backfill; expansion crack; image processing; fractal dimension; compressive strength 充填采矿法设计前期必须要进行充填配比试 验,研究充填体在指定龄期的稳定性,常以养护 28 d