水泥-水玻璃双液注浆力学特性的试验研究
Experimental study on mechanical characteristics of cement-silicate double solution grouting

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 experiment was carricd out by measuring high-precision inclinometer pipe deformation of 0.5 meter away from grouting center with grouting pressure 0.4 MPa and grouting age 1,2,4 and 12 h, and combining finite element software ABAQUS. The cement-silicate double solution grouting mechanical properties of different grouting age and different grouting depth was then studied. The results show:at grouting age of 1,2,4 and 12 h,the grouting force generated by cement-silicate double solution grouting increases at first, and then decreases and thereafter continually increase, with the minimum value appears at grouting age of 2 h;At different grouting age,the maximum inclinometer deformation stress Mises appears in central depth of grouting soil, and the second largest deformation stress of inclinometer appears in the critical position between grouting soil and no grouting soil