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川江系长江上游宜宾至宜昌间的河段,全长1,033公里,流经山区峡谷,滩多水急,礁石棋布。在航道整治中,需炸除大量水下暗礁,其中水下钻孔爆破是一种效率较高的施工方法。以往因没有专门的钻探船,每到枯水只能.临时用木船拼装成钻探船,在船上搭建工作平台,安装钻机和附属设备,用船上的手摇绞车,绞紧带在两岸的钢丝缆绳,以固定船位,进行钻孔。这种方法虽能解决
The upper reaches of the Yangtze River in Sichuan Yangtze River Yibin to Yichang between the river, a total length of 1,033 km, flowing through mountain valleys, beaches and more water urgent, reef chess cloth. In waterway regulation, a large number of underwater reefs are to be explored, of which underwater drilling and blasting is a more efficient construction method. In the past, there was no dedicated drilling vessel, and every dry flow was limited to temporarily assembling a wooden vessel into a drilling vessel, setting up a working platform on the vessel, installing drilling rigs and ancillary equipment, using a hand-winch on the vessel and tightening the steel wire rope , To fix the ship’s position, drilling. Although this method can be solved