简易纵剖面仪及其在岩体结构面粗糙度系数研究中的应用

本文介绍了自制简易纵剖面仪的基本原理、主要部件及其操作要点。简易纵剖面仪具有原理简单、设备轻便、操作简便、实用效果好且速度快等优点。用简易纵剖面仪可快速绘制大量结构面表面轮廓曲线,以便进行JRC统计分析和结构面抗剪强度的统计估算,克服了由于样本数少而估算结果代表性差的缺陷;还可以从统计角度研究结构面JRC和抗剪强度的尺寸效应、各质异性和各向异性等问题,为客观地综合评价岩体结构面抗剪强度提供可靠依据。文末根据实用效果指出简易纵剖面仪在工程实践中的广阔应用前景。

SIMPLE PROFILE INSTRUMENT AND ITS APPLICATION ON STUDYING JOINT ROUGHNESS COEFFICIENT OF ROCK

In this paper, the principle, main parts and operation method of the simple profile instrument, which is made by myself are introduced. The simple profile instrument has so much advantages as simple principle, light apparatus, convenient operation, best result and fast work that we can quickly get a lot of surface profile curves of discontinuity surfaces. Based on these curves which completed by simple profile instument, we can analyze statistically JRC and shear strength of discontinuity, so that the defects of bad representative caused by less samples can be overcome. Using these curves, we also can study the scale effects, nonunif ormity and anisotropism of JRC and shear strength of discontinuity, so that a reliable basis which evaluates shear strength comprehensively is established. Finally , we put out the wide application prospect of the simple profile instrument on the enginerring practice through its application effects.