Columnar joint, microfissure and gently dipping structural surface are the three fundamental factors which lead to the small deformation modulus of basaltic mass.
白鹤滩柱状节理玄武岩中发育的柱状节理、微裂隙及缓倾角结构面是导致岩体变形模量较低的主要因素；
Columnar joint, microfissure and gently dipping structural surface are the three fundamental factors which lead to the small deformation modulus of basaltic mass.
白鹤滩柱状节理玄武岩中发育的柱状节理、微裂隙及缓倾角结构面是导致岩体变形模量较低的主要因素；
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