Abstract: Long-term creep behaviour simulating test was used to study two kinds of representative sample of red beds soil-rock fillings．The test has continued for six mouths.The test shows that except rock characteristic，density of soil-rock fillings，overburden and wet-dry circulatlon，fine material content is the major influence factor for long-term creep behaviour of red beds soil-rock fillings．

Key words: red beds soil-rnek fillings, fine ma terial content, long-term creep behaviour, simulating test

摘要： 选择了两种有代表性级配的红层软岩土石混合料，进行了长期蠕变性能模拟试验．持续6个月的模拟试验研 究表明，红层软岩土石混合料的长期蠕变性能除了与岩块特性、成型密度、上覆荷载及干湿循环有关外，细料含量 是影响其长期蠕变性能的主要因素．

关键词: 红层软岩土石混合料, 细料含量, 长期蠕变性能, 模拟试验