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首页> 外文会议>Asia-Pacific Conference on Shock amp; Impact Loads on Structures; 20031112-14; Changsha, Hunan,(CN) >APPLICATION AND STUDY OF THE METHOD OF LONGHOLE DECK BLASTING AND JOINT-CUTTING CARTRIDGE BLASTING WITH WATER COUPLED MEDIUM IN LARGE-DIAMETER BLASTHOLES
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APPLICATION AND STUDY OF THE METHOD OF LONGHOLE DECK BLASTING AND JOINT-CUTTING CARTRIDGE BLASTING WITH WATER COUPLED MEDIUM IN LARGE-DIAMETER BLASTHOLES

机译：大直径炸药中水耦合介质龙口甲板爆破联合切屑爆破方法的应用研究

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摘要

During the design and construction of the foundation pit blasting excavation of the Xiabaishi bridge, the method of longhole deck blasting was adopted for the first time, as well as the method of moderate longhole cutting blasting by stage and deck toe space charging with vertical large-diameter blastoles. Further, an attempt to use the method of joint-cutting cartridge blasting for the water coupled medium in large-diameter blastholes was made. Basic principles and the mechanics of methods are introduced and the course of pit blasting excavation is presented in detail in this paper. Practical results from the project showed that the average utilization ratio of blastholes was achieved (up to 96%), the peripheral hole mark ratio exceeded 98% and the time limit for the project was shortened. The construction technique is feasible with technical and economic benefit.
机译：下白石大桥基坑爆破开挖设计与施工中，首次采用了深孔平台爆破法，并采用了竖向大跨度的阶段和甲板趾底装药进行中孔深孔爆破的方法。直径小扁桃体。此外，尝试对大口径爆破孔中的水耦合介质使用联合切割药筒爆破方法。介绍了方法的基本原理和机理，详细介绍了基坑爆破开挖的过程。该项目的实际结果表明，达到了爆破孔的平均利用率（高达96％），周边孔眼标记率超过98％，并且缩短了该项目的工期。施工技术可行，具有技术和经济效益。

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