利用岩石结构面网络模拟计算岩体带宽连通率及岩体强度参数

Computing joint persistence ratio and strength of rock mass by using rock discontinuity network simulation

岩体中存在的结构面对岩体的力学特性有很大的影响,研究岩体的强度参数,必须弄清结构面在岩体中的分布情况,了解结构面对岩体强度的影响程度。岩体结构面的研究起初是靠人工进行现场测量,不仅耗费人力物力,而且获取的数据代表性不强,还略显粗糙。在计算机应用飞速发展的背景下,利用计算机进行结构面网络模拟的方法浮出水面,并成为现在国内外研究结构面的主要方法之一。此方法在众多的科学研究以及工程建筑领域得到了应用,并在应用之中得到了不断的完善和发展,取得了一定的成果。文章在对计算机结构面网络模拟原理分析的基础上,主要讨论了利用结构面网络模拟计算岩体连通率和岩体强度的方法,其中着重研究了带宽投影法的原理及带宽连通率的计算过程,介绍了利用带宽连通率计算岩体强度参数的方法。利用西北某水电站实际研究中应用此方法的工程实例对成果做了评价,成果与实际情况大体相符。对结构面网络模拟方法做了综合评价:简单易行,省时省力,效果良好。

The discontinuity in rock mass has great influence on its mechanical properties.In order to study the strength parameters of rock mass,we must know the distribution of discontinuity and discontinuity′s influence degree.In the beginning,studying discontinuity is depend on manpower.It is not only wasting source,but also can not acquire representational data.With the background of computer application developing at fast sped,the computer discontinuity network simulation is appeared.And it has become the one of the primary means.This method has been applied widely,and gain development and much success.Based on analyzing the principle of computer discontinuity network simulation,the article discusses how to work out joint persistence ratio and strength of rock mass by using discontinuity network simulation.Mostly,it studies the principle of bandwidth projection method and process of computing the bandwidth joint persitence ratio.Then,the paper introduces method of computing strength parameters of rock mass by using bandwidth joint persistence ratio.Being applied to the practical hydroelectric station in Northwest China,the simulation result is about the same as the reality on the whole,this method was proved having practical value.At last,the authors evaluate this joint persistence ratio method.It has many advantage,such as simpleness,saving time,good effection Then, This method is advanced and useful.