| 摘要 |
PCT No. PCT/SE90/00195 Sec. 371 Date Nov. 5, 1991 Sec. 102(e) Date Nov. 5, 1991 PCT Filed Mar. 27, 1990 PCT Pub. No. WO90/13998 PCT Pub. Date Nov. 29, 1990.The invention relates to a method and a device for cutting off the trunk of a tree by detonation of an explosive charge in contact with the trunk. The invention solves the problem of providing a safe and convenient way of cutting off the trunk of a tree which has fallen to an inclined position where it rests against another tree or against an electric overhead line. To the trunk there is, at the desired level above ground, attached a holder which carries an explosive charge and can from the ground be mounted on the trunk, whereupon the charge is detonated and the trunk section above the cut-off level severed from the section below. In this way the top section is either directly released from its support or can conveniently be so released. |
