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对于可凿性可爆性不一致的特殊矿体,不能采用目前常用的评价标准比较单一的矿岩坚固性分级方法,须对其可凿性和可爆性分别评价以确定凿岩爆破参数.其可凿性和可爆性可用其物理力学性质分别进行评价.利用线性和高次回归方法,对所测定出的特殊矿岩的物理力学性质进行相关性研究,发现矿岩的波阻抗Z、弹性模量E和抗拉强度σL最能反映矿岩可凿性可爆性,并对凿岩爆破工作提出了可行建议.图5,表2,参10.
For special ore bodies with inconsistency of malleability, it is impossible to compare the single solidity classification method of mine with the commonly used evaluation criteria, and its chiselbility and explosive property should be separately evaluated to determine the parameters of rock blasting. The chisel property and explosive property can be evaluated respectively by their physical and mechanical properties. The linear and high-order regression methods are used to study the correlation between the physical and mechanical properties of the special ore rock. The wave impedance Z, elasticity Modulus E and tensile strength σL can most reflect the malleability of mineable rock, and put forward feasible suggestions for drilling and blasting work.Figure 5, Table 2 and Reference 10.