期刊论文

Practice of Underwater Reef Blasting in Port Channel

中文

爆破

1001-487X

2016

33

2

123-127

10.3963/j.issn.1001-487X.2016.02.024

国家自然科学基金项目（50974076） 湖南省教育厅科研项目（14C0959） 湖南省研究生科研创新项目（2015SCX14）

本校为第一机构

水下炸礁在港口建设、航道疏浚等水运工程中运用日益广泛,但水下爆破受施工环境和相关因素影响,相对陆域爆破难度较大。炸礁工程位于近海港区,待爆礁石为中硬岩,爆区四周环境较好。施工中采用炸礁钻爆船逐块作业,选取 115 mm炮孔、炸药单耗1.62 ~ 2.07 kg/m~3、孔距2.5 m、排距2.4 m、超深1.5 m的爆破参数,采用排间毫秒延期起爆网路,同时实施安全与质量控制措施,确保爆破安全。结果表明:水下炸礁爆破效果良好,炮孔全部起爆,礁石块度均匀且较为破碎,无浅点,爆破振动与水中冲击波在安全范围内,未对岸边建筑物及鱼类等水生物造成危害。

The underwater reef blasting is widely used in harbor construction,waterway dredging and some other water transport engineering. However,compared with onshore blasting,the underwater blasting is more difficult for the construction environment and related factors. The underwater reef blasting is located in coastal port,with mediumhard rock and good environment. The reef blasting-workboat was used in the project,by choosing appropriate blasting parameters,including 115 mm borehole,1. 62 ~ 2. 07 kg / m^3 specific charge,2. 5 m hole spacing,2. 4 m ...