摘要
引入可拓学理论,建立隧道围岩质量评价物元模型,采用熵权法计算指标权重,选取岩石单轴饱和抗压强度RC、围岩质量指标RQD值、结构面摩擦系数Jf、节理间距Jd、地下水状态W、完整性系数Kv为评价指标,对坪子头隧道左线围岩质量等级进行评价,研究表明,基于熵权法的围岩质量可拓评价不仅取得了与工程地质报告相一致的评价结果,而且能客观反映待评围岩与相邻围岩等级之间的距离,从而提供更为准确的围岩级别,为隧道施工提供了科学依据。
Based on extensional theory,the evaluation matter element model of rock quality was established to calculating the weight according on entropy weight method and six factors,i.e.rock uniaxial compressive strengthen（RC）,rock quality designation（RQD）,strengthen coefficient of structural plane（Jf）,joints distance（Jd）,groundwater condition（W）,integrity coefficient（Kv）,were selected in the evaluation of the quality of the surrounding rocks of Pingzitou left tunnel.The study shows that,based on entropy weight method,the result of the rock quality extension evaluation was in accord with the engineering geology report and reflected the distance between the rock and the adjacent one,so as to put forward more accurate level of the rock and scientific guidance for tunnel construction.
出处
《公路工程》
北大核心
2012年第1期139-143,共5页
Highway Engineering
关键词
围岩质量评价
可拓学
物元模型
熵权法
BQ法
surrounding rock quality evaluation
extenics
matter-element model
entropy weight method
BQ method
