岩土力学 ›› 2020, Vol. 41 ›› Issue (S1): 394-403.doi: 10.16285/j.rsm.2019.0652

• 测试技术 • 上一篇    

人工合成类废布料纤维纱加筋黄土力学变形性质及抗溅蚀特性试验研究

褚峰1, 2，张宏刚3，邵生俊4，邓国华5   

  1. 1. 西安工程大学 城市规划与市政工程学院，陕西 西安 710048；2. 西安工程大学 功能性纺织材料及制品教育部重点实验室，陕西 西安 710048； 3. 中煤科工集团 西安研究院有限公司，陕西 西安 710077；4. 西安理工大学 岩土工程研究所，陕西 西安 710048； 5. 西安黄土地下工程技术咨询有限公司，陕西 西安 710000
  • 收稿日期:2019-04-09 修回日期:2019-07-02 出版日期:2020-06-19 发布日期:2020-06-09
  • 作者简介:褚峰，男，1982年生，博士，讲师，主要从事黄土力学与工程及环境岩土工程方面的研究工作。
  • 基金资助:
    国家自然科学基金项目（No.41272320）；西安工程大学博士科研启动基金项目（No.BS1705）。

Experimental study on mechanical deformation and corrosion resistance characteristics of loess reinforced with synthetic waste cloth fiber yarn

CHU Feng1, 2, ZHANG Hong-gang3, SHAO Sheng-jun4, DENG Guo-hua5   

  1. 1. College of Urban Planning and Municipal Engineering, Xi’an Polytechnic University, Xi’an, Shaanxi 710048, China; 2. Key Laboratory of Functional Textile Material and Product, Ministry of Education, Xi’an Polytechnic University, Xi’an, Shaanxi 710048, China; 3. Xi’an Research Institute, China Coal Technology and Engineering Group Corp, Xi’an, Shaanxi 710077, China; 4. Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an, Shaanxi 710048, China; 5. Xi’an Loess Underground Engineering Technology Consulting Co., Ltd., Xi’an, Shaanxi 710000, China
  • Received:2019-04-09 Revised:2019-07-02 Online:2020-06-19 Published:2020-06-09
  • Supported by:
    This work was supported by the National Natural Science Foundation of China(41272320) and Doctoral Research Initiation Fund of XPU(BS1705).

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摘要： 纺织企业每年都产生大量的人工合成类废弃布料，处理不当会造成比较严重的环境污染。将废弃布料开松、分梳和切断后具有良好抗酸碱腐蚀性能的涤纶纤维纱按一定比率掺入素黄土中，形成纤维纱加筋黄土试样。用路面材料强度试验仪、真三轴试验仪、抗拉强度仪和土壤溅蚀设备对素黄土、单丝纤维加筋黄土和纤维纱加筋黄土试样进行相关测试。试验结果表明，随着纤维纱掺加比率的增加，无侧限抗压强度呈先增大后减小的变化趋势，最优纤维掺加比率，纤维纱加筋黄土及单丝纤维无侧限抗压强度均大于素黄土，在相同的纤维掺加比率、细度及长度条件下纤维纱加筋黄土无侧限抗压强度大于单丝纤维加筋黄土；纤维纱加筋黄土黏聚力c值大于单丝纤维加筋黄土及素黄土，内摩擦角?值与单丝纤维加筋黄土及素黄土比变化不明显；素黄土在抗拉强度测试中呈现脆性破坏特征，纤维纱的加筋黄土抗拉强度大于单丝纤维加筋黄土及素黄土，纤维纱加筋黄土破坏时拉应变大于单丝纤维加筋黄土；相同的时间节点纤维纱加筋黄土击溅后形成的坑洞孔深小于素黄土，同时溅蚀量较素黄土更少。

关键词: 黄土, 人工合成类废布料, 纤维纱, 加筋, 试验研究

Abstract: Textile companies produce a large number of synthetic waste fabrics every year, and improper handling can cause serious environmental pollutions. The discarded fiber yarn is used to form a fiber yarn-reinforced loess sample by loosening, combing, and cutting into the plain loess at a certain ratio. Related tests were carried out on plain loess, monofilament fibre-reinforced loess and fiber yarn-reinforced loess samples by using pavement material strength tester, true triaxial apparatus, tensile strength tester and soil erosion equipment, respectively. The results showed that when the fiber yarn blending ratio increases, the unconfined compressive strength increases first and then decreases, which indicates the optimal fiber doping ratio is found. For the unconfined compressive strength, fiber yarn-reinforced loess and monofilament fibre-reinforced loess are larger than plain loess. Under the same fiber blending ratio, fineness and length, the unconfined compressive strength of fiber yarn-reinforced loess is more significant than that of monofilament fiber-reinforced loess. The cohesive strength of fiber yarn-reinforced loess is greater than those of monofilament fibre-reinforced loess and plain loess; while the internal friction angle of these three loesses is similar. Plain loess exhibits brittle failure characteristics in the tensile strength test. Tensile strength of fiber yarn-reinforced loess is higher than those of monofilament fiber-reinforced loess and plain loess. Tensile strain of fiber yarn-reinforced loess is larger than that of monofilament fiber-reinforced loess. At the same time point, the pores formed by the fiber yarn-reinforced loess are smaller than the plain loess, and the amount of erosion is less than that of plain loess.

Key words: loess, chemical waste cloth, fiber yarn, reinforcement, experimental research

中图分类号: 

  • TU 444
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