Pit-in-pit

geologic investigation in water area

Low Pier Area in Water

reconnaissance in water area

Reuse of blow down water in water circulating system

sludge water in water treatment plant

Water-in-Water

a protective layer in excavation of rock foundation

boundary line of two times between earth excavation area and earth fill area

construction of foundation pit excavation

deep excavation in soft soils

effective coefficient of excavation pit

Excavation area

excavation in city area

excavation in soft clay

excavation in thin layers

excavation pit support

excavation water injection into coal seam

inrushing in excavation