论文部分内容阅读
通过测定水泥-水玻璃双液注浆压强0.4 MPa,距离注浆中心0.5 m,注浆龄期1,2,4和12 h高精度测斜管的变形,结合有限元软件ABAQUS,研究不同注浆龄期、不同深度水泥-水玻璃双液注浆的力学特性。试验结果表明:注浆龄期1,2,4和12 h,水泥-水玻璃双液注浆产生的注浆压力先增大后减小,再持续增大,最小值发生在注浆龄期2 h;各个注浆龄期测斜管变形内力Mises的最大值出现在注浆土层中心深度,测斜管的第二大变形内力出现在注浆土层与未注浆土层分界处。
The deformation of inclined pipe with high accuracy of 0.4 MPa, 0.5 m from the center of grouting, 1, 2, 4 and 12 h of grouting was measured, and the finite element software ABAQUS was used to study the effects of different injection Mechanical properties of cement - water glass double - liquid grouting at slurry age and depth. The results show that the grouting pressure of cement-water glass double-liquid grouting increases firstly and then decreases and then increases continuously, and the minimum value occurs in grouting age at 1, 2, 4 and 12 h of grouting age 2 h. The maximum value of internal stress Mises appears in the center of grouting soil at each grouting age, and the second large deformation internal force of inclinometer pipe appears at the boundary of grouting soil and un-grouting soil.