关键词: 原位试验, 竖向荷载, 抗剪, 变形, 锚杆

Abstract: Large in-situ tests require applying vertical loads to the rock mass or the test object to obtain mechanical parameters. The vertical load is provided by vertical reaction devices, and commonly includes the load/stack platform and the anchor pile reaction device. Taking Tianshui Quxi urban and rural water supply project as an example, the deformation and shear tests of rock mass of dam foundation were conducted using ground anchors to apply vertical reaction forces, verified the applicability and feasibility of cement mortar anchoring steel bars as the reaction device, and provided reference and basis for similar projects and tests.

Key words: in-situ test, vertical load, shear resistance, deformation, anchor bolt