与其他原位测试手段相比,旁压试验能更客观地反映试验土体的横向强度和变形特征,只是由于野外操作步骤繁琐,影响试验数据精度的因素较多,而在实际工程中应用较少,而地铁勘察规范中要求必须使用旁压试验指标来评价岩土的水平变形特征。本文以实际勘察工程为例,指出可能导致旁压试验失败的几个因素,从试验准备、成孔工艺、试验时间、压力加载等级等方面,结合野外操作经验,经过对比分析,分别提出对策,进行控制。 Compared with other in-situ testing methods, the pressure-side pressure test can more objectively reflect the transverse strength and deformation characteristics of the test soil, but only because of the cumbersome operation steps in the field and more factors that affect the accuracy of the test data. However, Less, while the requirements of the Metro survey regulations require the use of pressure-test indicators to evaluate the horizontal deformation characteristics of rock and soil. In this paper, the actual investigation project is taken as an example to point out several factors that may lead to the failure of the pressure test. According to the experience of field operation from the aspects of test preparation, pore forming process, test time and pressure loading level, Control.