| 摘要 |
PROBLEM TO BE SOLVED: To develop economical high-energy-absorbing rock fall protection work. SOLUTION: A hollow heavy load of cast iron, a concrete block or the like is arranged for increasing weigh in an erection section to be subjected to rock fall energy in a conventional pocket rock net work method. A wire rope in a net-like structure is employed, and energy absorption is alleviated by deformation of the net-like structure in a collision of a falling rock. COPYRIGHT: (C)2009,JPO&INPIT
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