工程科学学报.第43卷.第4期：552-560.2021年4月 Chinese Journal of Engineering,Vol.43,No.4:552-560,April 2021 https://doi.org/10.13374/j.issn2095-9389.2020.01.21.001;http://cje.ustb.edu.cn 改性高水材料抗压、抗剪强度特征及对比分析 张钊2，刘长武2)区，王一冰1,2)，郭兵兵) 1)四川大学水力学与山区河流开发保护国家重点实验室，成都6100652)四川大学水利水电学院，成都6100653)河南工程学院安全工 程学院.郑州451191 ☒通信作者.E-mail:liuchangwu@scu.edu.cn 摘要以高水充填材料为载体，用聚乙烯塑料(PE)对其进行改性，研究了改性高水材料的抗压、抗剪强度特征，并对结果进 行了对比分析.结果表明：随PE粉掺量的增加，改性高水材料的抗压、抗剪强度均呈现降低的趋势，改性高水材料各应力应 变曲线与纯高水材料有明显区别.纯高水材料的残余强度更高，改性高水材料的残余强度普遍较低，而剪切位移曲线变化不 明显：PE粉的加入明显改变了材料的生成物形貌以及微观结构，随掺量的增加逐渐由纤维网状结构向絮凝块状结构变化，而 且生成物之间更容易形成尺寸较大的贯穿孔洞：改性高水材料的抗剪强度明显低于抗压强度.，表明改性类高水充填材料不宜 用于倾角较大的煤层 关键词废弃塑料：高水材料：抗压强度：抗剪强度：微观形貌 分类号TU599 Characteristics and comparative analysis of compressive and shear strengths of modified high-water materials ZHANG Zhao 2.LIU Chang-wu2,WANG Yi-bing2,GUO Bing-bing 1)State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China 2)College of Water Resource Hydropower,Sichuan University,Chengdu 610065,China 3)College of Safety Engineering,Henan University of Engineering,Zhengzhou 451191,China Corresponding author,E-mail:liuchangwu@scu.edu.cn ABSTRACT Pollution from waste plastics has become one of today's most serious environmental problems,and the recycling of waste plastics is a research hotspot.High-water materials are widely used in mine-filling operations,leak prevention,flame-retardant fire extinguishers,and other related applications due to their advantages of not blocking pipes,ease of pumping,high early strength,and environmental friendliness.These materials are also commonly referred to as high-water quick-setting materials and high-water filling materials.Despite their advantages,high-water materials also have some shortcomings in practical applications such as the need for a large volume of materials and their high engineering costs.Currently,research on waste-doped modified high-water materials has become an important focus in the development of high-water materials.Using this approach,waste can be treated effectively at a reduced cost by the appropriate replacement of materials.The high-water filling material modified with polyethylene plastic(PE)was used as a carrier.The compressive and shear strengths of the modified materials were determined,and the results were compared and analyzed. The results reveal that with increases in the PE powder content,the compressive and shear strengths of the modified high-water material exhibit a decreasing trend.The stress-strain curves of the modified high-water material obviously differ from those of unmodified high- water material.The residual strength of the unmodified material is higher,that of the modified high-water material is generally low,and 收稿日期：2020-01-21 基金项目：河南省科技攻关资助项目(192102310198)改性高水材料抗压、抗剪强度特征及对比分析 张    钊1,2)，刘长武1,2) 苣，王一冰1,2)，郭兵兵3) 1) 四川大学水力学与山区河流开发保护国家重点实验室，成都 610065    2) 四川大学水利水电学院，成都 610065    3) 河南工程学院安全工 程学院，郑州 451191 苣通信作者，E-mail: liuchangwu@scu.edu.cn 摘    要    以高水充填材料为载体，用聚乙烯塑料（PE）对其进行改性，研究了改性高水材料的抗压、抗剪强度特征，并对结果进 行了对比分析. 结果表明：随 PE 粉掺量的增加，改性高水材料的抗压、抗剪强度均呈现降低的趋势，改性高水材料各应力应 变曲线与纯高水材料有明显区别，纯高水材料的残余强度更高，改性高水材料的残余强度普遍较低，而剪切位移曲线变化不 明显；PE 粉的加入明显改变了材料的生成物形貌以及微观结构，随掺量的增加逐渐由纤维网状结构向絮凝块状结构变化，而 且生成物之间更容易形成尺寸较大的贯穿孔洞；改性高水材料的抗剪强度明显低于抗压强度，表明改性类高水充填材料不宜 用于倾角较大的煤层. 关键词    废弃塑料；高水材料；抗压强度；抗剪强度；微观形貌 分类号    TU599 Characteristics  and  comparative  analysis  of  compressive  and  shear  strengths  of modified high-water materials ZHANG Zhao1,2) ，LIU Chang-wu1,2) 苣 ，WANG Yi-bing1,2) ，GUO Bing-bing3) 1) State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China 2) College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China 3) College of Safety Engineering, Henan University of Engineering, Zhengzhou 451191, China 苣 Corresponding author, E-mail: liuchangwu@scu.edu.cn ABSTRACT    Pollution from waste plastics has become one of today’s most serious environmental problems, and the recycling of waste plastics  is  a  research  hotspot.  High-water  materials  are  widely  used  in  mine-filling  operations,  leak  prevention,  flame-retardant  fire extinguishers, and other related applications due to their advantages of not blocking pipes, ease of pumping, high early strength, and environmental friendliness. These materials are also commonly referred to as high-water quick-setting materials and high-water filling materials. Despite their advantages, high-water materials also have some shortcomings in practical applications such as the need for a large  volume  of  materials  and  their  high  engineering  costs.  Currently,  research  on  waste-doped  modified  high-water  materials  has become an important focus in the development of high-water materials. Using this approach, waste can be treated effectively at a reduced cost by the appropriate replacement of materials. The high-water filling material modified with polyethylene plastic (PE) was used as a carrier. The compressive and shear strengths of the modified materials were determined, and the results were compared and analyzed. The results reveal that with increases in the PE powder content, the compressive and shear strengths of the modified high-water material exhibit a decreasing trend. The stress–strain curves of the modified high-water material obviously differ from those of unmodified high￾water material. The residual strength of the unmodified material is higher, that of the modified high-water material is generally low, and 收稿日期: 2020−01−21 基金项目: 河南省科技攻关资助项目（192102310198） 工程科学学报，第 43 卷，第 4 期：552−560，2021 年 4 月 Chinese Journal of Engineering, Vol. 43, No. 4: 552−560, April 2021 https://doi.org/10.13374/j.issn2095-9389.2020.01.21.001; http://cje.ustb.edu.cn