论文部分内容阅读
为了在锚喷支护设计中普及数值分析的应用,以提高设计水平,本文针对当前实际,论述了简化力学模型和进行定性(或半定量)分析的必要性,并建议在围岩稳定性数值分析中应用围岩类别的概念。本文介绍了用各类围岩代表性工程的原型观测资料,对二维线弹性分析结果进行反馈和初步综合性修正的一种近似分析方法。采用这种半理论半经验方法以及其它简化分析方法研制的 BMP-84边界元程序,经工程验证:该程序可用于尚无实测岩体力学参数的工程,其分析结果与实测位移接近,并可用微型计算机计算,简便实用。因而适于在一般地下工程中推广应用。
In order to popularize the application of numerical analysis in the design of anchor and shotcrete support, in order to improve the design level, this paper discusses the necessity of simplified mechanical model and qualitative (or semi-quantitative) analysis according to the current practice. The concept of surrounding rock type is applied in the analysis. This paper presents an approximate analysis method that uses the prototype observation data of representative projects of various types of surrounding rock to provide feedback and preliminary comprehensive correction of the two-dimensional linear elastic analysis results. The BMP-84 boundary element program developed by this semi-theoretical semi-empirical method and other simplified analysis methods has been verified by engineering. The program can be used in engineering which has no actual mechanical parameters of rock mass. The analysis results are close to the measured displacements and are available Microcomputer calculation, simple and practical. It is suitable for general application in underground engineering.