Design of Underground Engineering Analogy Based on Fuzzy Comprehensive Evaluation Model

Abstract

In the design of underground engineering analogy, the division of rock mass level and the selection of support parameters are affected by many uncertain factors which share characteristics of random and obscurity. This paper lays the foundation of the classification of joint rock masses CSIR and supporting parameters recommended values, selecting several key factors affecting the stability of surrounding rock masses, and employing the methods of fuzzy comprehensive evaluation to divide the underground cavern, and having put forward the reasonable supporting parameters. The results show that the level of surrounding rock is the Ⅲ, meanwhile, it takes into account the proximity effects and designs the supporting parameters to the supports, as a result, this method has achieved comparatively reasonable and economic effects in the practical application.

Analysis of Rock Mechanical Characteristics and Establishment of an Evaluation System for Coal Measures in the Longtan Formation, Guizhou Province

“…Presently, research findings related to the comprehensive evaluation of rock masses have played a significant role in various engineering activities including tunnel construction and coal mining. By analyzing and evaluating the deformation and failure characteristics of the surrounding rock in tunnels and coal mine passageways, appropriate support measures have been identified to manage surrounding rock deformations. − The primary steps involved in constructing a comprehensive evaluation system for rock masses include selecting indicators that influence rock mass properties based on project characteristics, categorizing these indicators, determining their respective weights, and selecting the appropriate comprehensive evaluation methodology. Common comprehensive evaluation systems for engineering rock masses include the RMR, Q, and BQ classifications.…”