深水裸露爆破挤淤填石工艺在董家口港引堤工程中的应用

Application of deep-water exposed blasting and silt squeezing-stonefilling technology in Dongjiakou Port causeway project

在董家口港引堤工程爆破挤淤填石施工中,为有效提高施工效率,考虑采用水下裸露爆破工艺替代传统水下钻孔爆破工艺。依据规范和设计要求,并结合工程实际情况设计爆破参数,采用自制机具实施水下裸露爆破。经过探地雷达法、钻孔探摸法等检测验证,堤身达到设计要求落底深度和宽度,表明水下裸露爆破在爆破挤淤填石施工中是可行的。水下裸露爆破挤淤填石的成功实施,较大地提高了施工效率,保证了工期,并一定程度上降低了爆破成本,建议在后续同类工程中推广应用。

In the exposed blasting and silt squeezing-stone filling construction of Dongjiakou Port causeway project,in order to effectively improve the construction efficiency,it is considered to replace the traditional underwater drilling and blasting technology with underwater exposed blasting technology.According to the standard and design requirements,and combined with the actual situation of the project,the blasting parameters were designed,and a self-made equipment was used to implement underwater exposed blasting.After the detection and verification of GPR method and drilling exploration method,the bottom depth and width of the levee meet the design requirement,which shows the underwater exposed blasting is feasible in the blasting and silt squeezing-stone filling construction.The successful implementation of underwater exposed blasting and silt squeezing-stone filling technology has greatly improved the construction efficiency,ensured the construction period,and reduced the blasting cost to a certain extent.It is recommended to popularize and apply it in subsequent similar projects.