岩石凿入过程的随机分析

THE RANDOM ANALYSIS OF ROCK PENETRATION

实际凿入过程受多种随机因素的影响,单一的确定性描述不可能对其作出精确的解释。对凿岩状态下的钴杆应力波进行连续采样测定的结果表明,实际凿入过程具有较大的不确定性,可以认为是一随机过程。本文用随机分析方法研究了应力波,凿入力,凿深,凿入系数和凿入效率的分布特性,并建立了岩石的力-凿深特性随机方程。

The penetrating process of rock is determined by a multiplicity of random factors, and it is practically impossible to describe the process by means of determinate parameters, functions and/or equations. The continuous sampling and measurements of the stress waves induced along a drill rod have shown that realistic penetrating processes exhibit the random characteristics and hence can be considered as a stochastic process. In the present work the stochastic process theory has been used for studying the distributions of stress waves induced, penetrating forces and depths, and of penetrating coefficients and efficiencies; and a stochastic equation for describing the penetrating process is derived.