RESEARCH ON FREEZE-THAW DRAINAGE TESTS OF HORIZONTAL DRAINAGE PIPES ON SLOPES
In seasonal frozen soil regions,the melting of ice crystals in spring leads to frequent freeze-thaw land-slide engineering disasters,resulting in significant economic losses.This study investigates the use of horizontal drainage pipes on slopes through freeze expansion and settlement tests,as well as freeze-thaw drainage tests.The re-sults indicate that in slope engineering within seasonal frozen soil areas,a 75 mm diameter PE drainage pipe is pre-ferred,with a layout density of one pipe per square meter and an inclination angle of 6° to 8°.The study analyzes a multi-layer horizontal drainage pipe technique and provides a calculation formula for slope stability using this tech-nique.This research can serve as a reference for reducing freeze-thaw landslide issues and improving slope stability in cold regions.
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