中文摘要：

突水突泥是全风化花岗岩隧道施工中常见的地质灾害,土体颗粒的流失和抗冲刷特性是决定全风化土体发生突水的关键因素。为了研究注浆加固体颗粒流失与抗冲刷特性,自行设计注浆试样制备及抗冲刷试验装置,能够实现全风化花岗岩劈裂、挤密注浆试样制作,以及模拟注浆加固体受水流冲刷的关键过程。利用该试验装置开展注浆量、动水流速、养护龄期、土体初始含水量等因素对注浆加固体的颗粒流失与抗冲刷特性试验研究,并定义颗粒流失率指标来定量评价土体颗粒流失与抗冲刷特性。试验表明：注浆加固体抗冲刷特性随注浆量及其养护龄期的提高均明显改善,动水流速的增加显著加大颗粒流失,含水量过低或过高时,加固体的抗冲刷特性均较差,存在一个最佳含水量值使得抗冲刷特性最优。同时,单位浆液量胶结土体范围（浆液胶结率）随注浆量呈二次抛物线变化,且浆液胶结率峰值随动水流速的提高向高注浆量方向移动。最后,根据试验结果提出地层注浆量的计算方法及含水量分区治理的原则。

英文摘要：

Water inrush is a common geological disaster in tunnel construction in completely weathered granite soil, and the loss of soil particles and the anti-scouring property are the keys to determine the water inrush. Therefore, a simple device for grouted sample manufacturing and an anti-erosion device were made to manufacture the samples of compaction grouting and fracturing grouting and to simulate the vital process of grouting reinforced solid being flushed by the flowing water. With these devices, a series of tests were carried out by controlling a number of factors such as the grouting capacity, the velocity of dynamic water, the curing time and the initial water content of the soil. The index of the particle erosion rate（PER） was proposed to evaluate the loss of soil particles and the anti-scouring property. The test results showed that the anti-scouring property was improved with the increasing of grouting capacity and curing time. However, the particle erosion rate was increased significantly with the increasing of dynamic water velocity, and the anti-scouring property was poor when the initial soil water content was very low or very high. There existed an optimum initial water content to make the anti-scouring property the best. The range of grout cementation over grouting capacity（ratio of grouting cementation） changed parabolically with the grouting capacity. The peak of grouting cementation ratio moved to the direction of high grouting capacity with the increasing of water velocity. A new method to calculate the grouting capacity and the principal of partition treatment of water inrush was proposed according to the test results.