Results 251 to 260 of about 469,079 (306)

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

open access: yesDeep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang   +5 more
wiley   +1 more source

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

open access: yesDeep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu   +3 more
wiley   +1 more source

Study on the structure and hydrological cycle of the Pingjiang underground river system. [PDF]

open access: yesSci Rep
Zhang Q   +8 more
europepmc   +1 more source

Moon's farside near-zero paleomagnetic field suggests a global lunar dynamo cessation. [PDF]

open access: yesSci Adv
Jiang X   +13 more
europepmc   +1 more source

Historical Geology for the Geology Major

Journal of Geological Education, 1959
Historical geology has been modified to provide more adequate background for geology majors specializing in petroleum and geophysics. Ways are suggested of adding material in the fields of sedimentary tectonics, structural evolution of provinces, methods of dating, and usage of stratigraphic nomenclature.
openaire   +1 more source

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