Controlled Blasting in a Limestone Mine using Electronic Detonators: A Case Study
Controlled Blasting in a Limestone Mine using Electronic Detonators: A Case Study
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DOI：
10.1007/s12594-017-0563-5
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发表时间：
2017-01-01
影响因子：
1.3
通讯作者：
Singh, Deepanshu R.
中科院分区：
文献类型：
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作者：
Mishra, Arvind K.;Nigam, Y. K.;Singh, Deepanshu R.
除极深矿床外，露天采矿法已被公认为最安全和最具生产力的采矿方式。对矿产和煤炭的需求不断增长，迫使矿山运营商扩大矿山规模，这导致大型露天开采项目的趋势日益明显。炸药和爆破技术在有效的露天采矿作业中发挥着重要作用。技术不断发展，使爆破系统更安全、更快速、更经济和更有效。此外，全球竞争力的提高使得必须以这样的方式进行爆破，即在主爆破中实现期望的破碎程度，同时最小化不期望的副作用，例如地面振动、空气冲击波/噪声、飞石、产生超大的巨石、形成趾部以及过度破碎或回裂。因此，爆破工程师的最终目标是确保爆破以环保的方式进行。本文介绍了一个石灰石矿的案例研究，在该矿山管理层希望将现有产量翻一番时，在为皮带输送机基础工程建造的翻车机绿色结构（2 m处）附近进行了控制爆破。本文论述了采用信号孔技术的电子雷管控制爆破的设计与实施。
Except for very deep-seated deposits, open cast mining method has been recognized as the safest and most productive mode for mining minerals. Ever growing demand in minerals and coal has compelled the mine operators to increase the size of mine, which has resulted in an increasing trend towards large capacity open cast projects. Explosives and blasting techniques play a significant role in efficient opencast mining operations. There have been constant technological developments towards safer, faster, economical and more efficient blasting systems. Further, globally increased competitiveness has necessitated to carryout blasts in such a way that the desired degree of fragmentation is achieved in the primary blast, with minimum undesired side effects such as ground vibration, air blast/noise, flyrock, generation of oversize boulders, formation of toe, and over break or back break. Hence, the ultimate objective of the blasting engineer is to ensure that the blasts are carried out in an eco-friendly manner. This paper presents a case study of limestone mine where a controlled blasting was conducted near a green structure of wagon tippler (at 2 m) being constructed for foundation work of belt conveyor as the mine management wants to double the existing production. This paper deals with controlled blast design and its implementation using electronic detonators with signature hole technique.