摘要
当前随着煤矿开采深度的增加,围岩变形也日益增加。本文以普通混凝土为基础掺加聚丙烯纤维,利用其抗拉、抗裂性好的特点,以提高喷射混凝土的抗拉性,通过实验得出纤维的最佳掺量,数值模拟及模拟分析表明,聚丙烯纤维混凝土具有较好的抗变形能力,使得围岩应力分布均匀,具有推广和应用价值。
The current with the increase of mining depth,the deformation is also increasing. In this paper,based on the common concrete mixed with polypropylene fiber,to use its tensile,good crack resistance characteristics,in order to improve the tensile properties of sprayed concrete,through the experiment the optimum dosage of fiber, numerical simulation and simulation analysis show that the polypropylene fiber concrete has good ability to resist deformation, makes rock mass uniform stress distribution,promotion and application value.
出处
《四川建材》
2015年第6期1-2,共2页
Sichuan Building Materials
基金
安徽省高校自然科学重大项目资助-深井高应力软岩巷道局部弱支护机理与合理支护形式研究(KJ2015ZD20)
关键词
聚丙烯纤维
喷射混凝土
数值模拟
polypropylene fiber
sprayed concrete
numerical simulation
