Table. 1.

The basic physical properties of the surrounding rock of large ancient underground cavern group of Longyou

Test project Natural density Dry density Saturation density Natural water content Relative density Porosity
ρ/(g/cm3) ρd/(g/cm3) ρw/(g/cm3) w/% G n/%
Average 2.28 2.21 2.31 4.31 2.71 19.19

Episodes 2019;42:287~299
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