noun
soil mechanics
Technical field in civil engineering and geotechnical engineering dealing with the behavior of soils.
土質力学は土木工学の基礎科目の一つです。
Soil mechanics is one of the fundamental subjects in civil engineering.
地盤工学 (geotechnical engineering) is a broader field that includes soil mechanics, rock mechanics, and their application to engineering problems.
Compound of 土質 (soil properties) and 力学 (mechanics).