单滩大方量条件下深水钻爆施工方法  

Deep water drilling and blasting construction method under condition of large volumeof single beach

作　　者：易琛 YI Chen(Three Gorges Navigation Authority,Yichang 443000,China)

机构地区：[1]长江三峡通航管理局,湖北宜昌443000

出　　处：《水运工程》2024年第5期215-219,共5页Port & Waterway Engineering

摘　　要：莲沱航道整治炸礁工程位于两坝间莲沱河段,其主要目的是将炸礁区从平坡调整为纵向阶梯状倒坡,起到扩大急流区过水面积从而降低流速和减小比降、平顺岸线并增加岸边水深、调整河床断面形态从而改善不良水流形态的作用。然而,炸礁工程中LT7炸礁区工程量极大,单滩整治爆破工程量目前居内河航道整治工程首位。通过对深水钻爆施工下的施工布置、施工分层方法以及施工船舶设备选型的研究,确定了该区域不同分区的施工方法。航道整治实际效果表明,航道水流条件得以明显改善,证明采取的施工方法合理有效。研究成果为莲沱段航道炸礁工程实施提供理论依据,也可为后期其他滩段整治提供借鉴。Liantuo Channel regulation and reef blasting project is located in Liantuo River section between two dams,the main purpose of which is to adjust the reef blasting area from flat slope to longitudinal ladder slope,to expand the water flow area of the rapids thereby reducing the velocity and slope,level the shoreline,increase the depth of the shore,and adjust the river bed section shape to improve the bad flow pattern.However,the work amount of LT 7 reef blasting area in the reef blasting is very large,and the work amount of single beach regulation blasting currently ranks first in the inland waterway regulation projects.This paper studies the construction layout,construction layering method and construction ship equipment selection under the deep water drilling and blasting construction,and determines the construction methods of different zones in this area.The actual effect of channel regulation shows that the channel flow condition has been improved obviously,which proves that the construction method adopted is reasonable and effective.The research results can provide a theoretical basis for the implementation of the reef blasting project in Liantuo section,and can also provide a reference for the subsequent regulation of other beach sections.

关 键 词：航道整治 深水钻爆 炸礁工程 梯级枢纽 通航效率 

分 类 号：U615[交通运输工程—船舶及航道工程]