本文第二部分提出一个新的适用于深层地下爆破问题的无限元。
The second part of the paper then Puts forth a new infinite element suitable for the subject of deep underground explosion.
广泛适用于露天及可燃气和(或)矿尘爆炸危险的地下爆破工程。
Widely used in outdoor blasting and underground blasting projects with combustible gas and mineral dust explosion risk.
露天采矿遵循与地下采矿相同的作业顺序：钻孔、爆破、装载并运走废料和矿石。
Open-pit mining follows the same sequence of oprations as underground mining: drilling, blasting, and loading and removing waste and ore.
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