| 摘要 |
PROBLEM TO BE SOLVED: To develop an economical and high energy absorbing type rockfall guard work. SOLUTION: Shock-absorber equipment is mounted to a wire rope between a pocket column and a suspended rope anchor in the case of a pocket-type rock net work. When rocks have fallen, a top part of the pocket column moves to absorb shocks to a wire mesh net and increase the amount of absorbed energy. COPYRIGHT: (C)2009,JPO&INPIT
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