ground; earth's crust; riverbed
Refers to the physical ground or geological stratum, including the earth's crust or the bed of a body of water.
この地域の地盤は軟らかい。
The ground in this area is soft.
川の地盤には砂利が堆積している。
Gravel has accumulated on the riverbed.
Used for the structural base of a building or construction, or metaphorically for a solid foundation.
建物の地盤を強化する工事が行われた。
Work was done to strengthen the building's foundation.
power base; constituency; foothold
Figurative use referring to a political or organizational support base, electoral constituency, or a secure position from which to operate.
彼は地元を地盤とする政治家だ。
He is a politician whose power base is his hometown.
新市場で地盤を固める。
We solidify our foothold in the new market.
The ground around here is firm, so tall buildings can be built.
He solidified his power base at home for the election.
The company built its foundation in the industry over many years.
This area has weak ground, so it's dangerous during earthquakes.
He became a politician by inheriting his father's power base.
地殻 is the scientific term for the Earth's outer solid layer studied in geology, while 地盤 refers to the ground or foundation at a specific site, used in construction and engineering contexts.
raised ground level; fill ground
soft ground; weak ground