The engineering practice and the numerical simulation have been conducted on the millisecond blasting for ditching deep bore hole.
以工程实践和动力有限元程序分析沟槽深孔微差爆破问题。
Based on the engineering practice, this paper introduced constructional technique and quality assurance measures of big bore hole digging and pouring with expansion pile head.
通过工程实例，介绍大孔径扩大桩头人工挖孔灌注桩的施工方法及质量保证措施。
This paper describes the basic principles, working mechanism and practice of the single bore multiple anchor method.
论述了单孔复合锚固法的基本原理、工作机理和工程实践。
This paper describes the basic principles, working mechanism and practice of the single bore multiple anchor method.
论述了单孔复合锚固法的基本原理、工作机理和工程实践。
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