SLOPE STABILIZATION METHOD, SLOPE STABILIZATION STRUCTURE, SOIL STRUCTURE MANAGEMENT METHOD, AND SOIL STRUCTURE MANAGEMENT SYSTEM

摘要

PROBLEM TO BE SOLVED: To deter a slope collapse beforehand, even if unexpectedly concentrated torrential rain occurs.;SOLUTION: An excess pore water pressure ratio α that defines an excess pore water pressure P2 generated in a soil pipe is calculated based on a measured soil parameter and a safety factor Fs of a slope. A limit excess pore water pressure P_L at which slope collapse can occur is predicted from the excess pore pressure ratio α and a drain pipe 3 is disposed on the slope so as not to exceed the limit excess pore water pressure P_L, and the excess pore water pressure P2 is dissipated by the drain pipe 3. The drain pipe 3 has a large number of holes in a longitudinal direction and one end is an open end, and the open end is exposed from the slope. The excess pore water pressure ratio α is expressed as (u-Δu)/u, where u is an excess pore water pressure when the soil pipe is completely saturated with groundwater and Δu is a water pressure loss when the groundwater infiltrates into the ground from the soil pipe.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT