バケットの海底での採取軌道について
SLB法によるマンガン団塊採掘の研究 (第2報)
1976 年 92 巻 1055 号 p. 7-12
詳細
1976 年 92 巻 1055 号 p. 7-12
The authors investigated the dredging path of bucket and the shape of dredging rope line on C.L.B.(continuous line bucket) mining system.
At first, we performed the model experiment on theplane which was simulated to the sea bottom, in order to observethe dredging path and the dredging rope line in detail and to grasp the goaf of C.L. B. mining system as a model. Moreover, we made the experiment concerning the dredging path of bucket in the indoor horizontal test tank.
The results obtained are summarized as follows:
(1) Empirical equation concerning the dredging path of bucket is obtained as equation (11) from the model experiment on the plane. i. e. l=K (l0/1.0)1-nLnK=0.61 (L0/lO) -0.38n=0.58 (L0/l0) -0.13 (ν/V) 0.28where l0: rope line distance between the discending and ascending rope lines (see Fig.1) LO: proiected length of the dredging rope line to L-axis from the bucket which has just dragged out by the dredging rope line to the bucket which has just been off-bottoming (see Fig.1)ν: rotating speed of rope line V: ship speed
(2) It is confirmed that empirical equation (11) is applied to the principal zone of the dredging patn of nucxet experimented in the indoor horizontal test tank.
(3) On the shape of dredging rope line, it is recognized that the constant relationship exists between the tension of ropel ine and theangle formed by rope line.
