提高海堤迎潮面护面结构爆破大块率的试验分析  

Analysis of test about improving the blasted boulder rate of seawall armour rock structure

作　　者：连泽俭 韩凌杰 臧振涛 LIAN Zejian;HAN Lingjie;ZANG Zhentao(Bureau of Comprehensive Development Ministry of Water Resources,PRC,Beijing 100000,China;ZJWEU Survey,Design and Research Co.,Ltd,Hangzhou 310018,China)

机构地区：[1]水利部综合事业局,北京100000 [2]浙江水院勘测设计研究有限公司,浙江杭州310018

出　　处：《江西水利科技》2020年第1期43-45,共3页Jiangxi Hydraulic Science & Technology

摘　　要：结合海堤迎潮面护面结构的块石需求,对霓屿料场的料源情况进行调查,分析提高大块石出产率的技术措施,在考虑炸药的排距、增距、堵塞长度以及起爆方式等因素下,进行现场爆破试验,结果显示:100kg以上的块石出产率平均为24.2%,800kg以上大块石产出率平均为10.9%。海堤工程汛期仍有22万m3大块石的缺口,占需要总量的42.3%.因此,为安全度汛,建议开展海堤迎潮面护面结构优化试验研究,以提高常规块石(重量大于300kg)的利用率.Coupling between the boulder needs of seawall armour structure,stone sources situation of Niyu material site was under investigation.The technical measures to improve boulder rate were analyzed.Considering the array pitch,increment pitch,stemming length and detonation mode,test was done.The result shows that the rate of stone of over 100kg is 24.2%,the rate of stone of over 800kg is 10.9%.But the seawall project also needs 0.22 million cubic stone,42.3% of the total.So,ensure safety in the high water season,optimal test is suggested to improve the utilization of stone over 300kg.

关 键 词：护面结构 石料调查 爆破试验 块石出产率 

分 类 号：TD235[矿业工程—矿井建设]