崩落矿岩散体速度场特征

Characters of Velocity Field about Loose Mine-rock in Caving Method

崩落矿岩散体被视作连续介质,从场论的观点出发,系统研究了无限边界条件下崩落矿岩散体移动场的速度场。散体在底部放出口放出过程中,散体移动场中存在散体移动场和散体静止场,且两场在移动边界上必保持连续。在散体移动场中,对于理想散体,速度场为非匀速场和定常场;对于实际散体,速度场为非均匀场和不定常场。在散体静止场中速度场为均匀场和定常场。论文介绍了理想散体和实际散体移动场速度方程,并对散体移动场的速度场特征进行总结和讨论。并进一步对速度场进行了研究,得出了崩落矿岩散体加速度特征。论文研究全面系统,具有较高的理论价值和参考价值。

The loose mine-rock in caving method is assumed as continuous medium. From the viewpoint of field theory,the velocity field of loose mine-rock is systematically studied under the condition of limitlessly boundary. There are moving field and static field when the loose mine-rock is partly drawn out from the bottom hole. The moving field certainly keeps continuum with the static field on the moving boundary. In the moving field of loose mine-rock under the ideal con- dition, the velocity field is un-uniform and constant. In the moving field of loose mine-rock under the actual condition, the field of velocity is non-uniform and un-constant. In the static field of loose mine-rock, the field of velocity is uniform and constant. The equations of velocity in moving field have been given under the ideal and actual conditions. The character of velocity field has been systematically discussed and generalized. And the character of acceleration about the loose mine- rock in caving method has been generalized. The study is complete and systematic, having highly values of theory and ref- erence.