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首页> 外文会议>Annual Conference on Explosives and Blasting Technique >Removal of the Top of an Aged Water Supply Reservoir By Explosives
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Removal of the Top of an Aged Water Supply Reservoir By Explosives

机译：通过炸药去除老年供水水库的顶部

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This project involved the removal of the top of an old water supply reservoir tank for the City of Lead, SD by explosives. The general contract called for the removal of the concrete top without damaging the sides or floor of the reservoir. The option of a rock hammer was eliminated, due to the possibility of an unpredictable collapse damaging the sides or floor of the reservoir. Different blasting options were discussed between the primary contractor and the blasting contractor, along with the pros and cons of each. The primary contractor settled on the option of drilling the structure for blasting versus using shaped charges. The initial recommended pattern of 2 ft by 2 ft (0.61 m by 0.61 m) was not cost effective, due to the number of holes needed (2,250 holes), and it was decided to conduct a series of test shots on a 3 ft by 3 ft (0.91 m by 0.91 m) pattern. The load for the first test shot was a single charge of 0.125 lb (0.11 kg) at a depth of 7 in (17.78 cm). The load for the second test shot was a single charge of 0.25 lb (0.06 kg) at a depth of 9 in (22.86 cm), and the load for the third and last test shot was 0.125 lb (0.06 kg) at a depth of 10 in (25.4 cm) with a second charge of 0.125 lb (0.06 kg) at a depth of 6 in (15.24 cm). This paper discusses the test blasting that was conducted to determine the proper pattern size and explosive load to use for the project, the procedures implemented to control noise and any flyrock, and the final results of the tank lid demolition.
机译：该项目涉及删除铅，SD的铅，SD的旧供水水库罐顶部。一般合同要求去除混凝土顶部，而不会损坏水库的侧面或地板。由于损坏水库的侧面或地板而无法预测的坍塌可能性，岩石锤的选项被淘汰。在主要承包商和爆破承包商之间讨论了不同的爆破选择以及每个人的利弊。主要承包商解决了钻探爆破结构的选择，使用成形电荷。由于所需的孔数（2,250个孔），初始推荐的图案2 ft 2 ft（0.61米×0.61米）的成本效益不成本，并且决定在3英尺上进行一系列测试镜头3英尺（0.91米0.91米）图案。第一次测试拍摄的负荷是0.125磅（0.11kg）的单一电荷，深度为7 in（17.78cm）。第二次测试射注的负荷是0.25磅（0.06kg）的单一电荷，深度为9（22.86cm），第三个和最后一次测试拍摄的负荷为0.125磅（0.06kg）的深度10 in（25.4cm），第二电荷为0.125磅（0.06kg），深度为6 in（15.24cm）。本文讨论了对项目使用适当的图案尺寸和爆炸性负荷的测试爆破，该程序实施了控制噪声和任何繁荣，以及罐盖拆除的最终结果。

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