1) spontaneous caving
自然垮落
2) collapse
[英][kə'læps] [美][kə'læps]
垮落
1.
The failure,rupture and collapse of mining induced surrounding strata are a representative process in which the boundaries of dynamic system are variable.
煤矿采动围岩的破坏、断裂和垮落是具有代表性的时变边界过程。
3) natural caving
自然崩落
1.
Production Practice of changing forced caving into natural caving;
强制崩落法转为自然崩落法生产实践
2.
The natural caving optimization study carried out in Yechangping molybdemum mine,Henan Province using three-dimensional elastic-plastic finite element method and three-dimensional stress analysis of geotechnical engineering-specific software(3D-σ) to simulated calculate pillar size.
进行的河南省卢氏县夜长坪钼矿自然崩落法开采优化研究,采用三维弹塑性有限单元法,运用岩土工程专用三维应力分析软件(3D-σ)对夜长坪钼矿自然崩落法的矿柱宽度尺寸优化模拟计算。
4) Block caving
自然崩落
1.
Prediction for block caving velocity of ore-rock is a complex dynamic process that relates to the caving rule and to the relation between caving and time.
矿岩自然崩落速率预测是一个涉及崩落规律和崩落与时间相依关系的复杂动态过程,通过数值模拟的方法,对流变断裂型矿岩的自然崩落规律和崩落速率进行了模拟研究。
2.
In mining method of block caving,undercut is the most feasible and active man-made factor used to control the caving process.
拉底是自然崩落法最灵活,最具有主动性的人为控制崩落的因素,它通过直接或间接地改善岩体的可崩性,达到诱导持续崩落和降低矿岩大块率的目的。
5) nature falls in water
自然落水
补充资料：松垮垮
1.散漫;涣散。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条