矿山尾矿坝水平应力竖向分布规律的新认识

以地球物理学基本理论为指导 ,根据地球重力场的特点 ,探讨了矿山尾矿坝侧压力及水平应力的来源 ,提出了矿山尾矿坝水平应力产生的主要原因在于拦蓄尾矿混合体的重力 (即拦蓄尾矿混合体的地心引力 )的观点。拦蓄尾矿混合体的重力不仅可以产生竖向应力 ,而且还可产生水平应力。给出了拦蓄尾矿混合体的重力所致水平应力的科学表达方式。提出了矿山尾矿坝侧压力及水平应力计算的一种新方法 ,总结出了与实际情况基本吻合的矿山尾矿坝水平应力随高度变化的近似数学模型 ,其相关度较高 ,符合回归分析的基本要求

A NEW KNOWLEDGE ON VERTICAL DISPERSIVE LAW OF HORIZONTAL STRESS IN THE TAILINGS DAM OF MINE

Under the guidance of the basic theory of geophysics and from the characteristics of the earth gravity field,the authors probe into the source of lateral pressure and horizontal stress in a tailings dam,and explain,through strict theoretical analysis,that the gravity,i e the terrestrial gravitation retaining the tailings mixture,is key reason for horizontal stress in the tailings dam The terrestrial gravitation retaining the tailing mixture can cause both vertical and horizontal stresses in the tailings dam In this paper,a scientific expression for the horizontal stress resulted from the gravitation of tailing mixture is given and a new method to calculate the lateral pressure and horizontal stress in the tailings dam is proposed In addition,a proximate mathematical model to show the change of the horizontal stress with dam altitude is worked out through regression analysis.