基于熵值赋权法的节理岩体隧道爆破质量可拓学评价  

Extenics evaluation of joint rock tunnel blasting quality based on entropy weighting method

作　　者：沈世伟[1] 许君臣[2] 代树林[1] 徐燕[1] 

机构地区：[1]吉林大学,吉林长春130026 [2]吉林建筑工程学院,吉林长春130118

出　　处：《土木工程学报》2013年第12期118-126,共9页China Civil Engineering Journal

基　　金：吉林省交通运输厅项目(2006-4-12);吉林大学基本科研业务费(450060445197)

摘　　要：基于物元理论,确定围岩因素、结构面因素、爆破参数因素及施工因素等4个方面,选取18个评价指标进行节理岩体隧道爆破质量可拓学评价。基于现场调查,主要考虑数据自身规律,提出熵值赋权法确定各评价指标权系数,在对典型断面隧道爆破质量的关联度计算基础上进行各断面爆破质量评价,并与《公路隧道施工技术规范》判定结果进行对比。同时,将评价结果与主要考虑专家经验的层次分析法及二者组合赋权法结果进行对比研究。结果表明:基于熵值赋权理论的可拓学评价结果,与《规范》判定结果相一致,优于层次分析法及组合赋权法的计算结果,说明可拓模型所选取的评价指标及所采用的权系数是合理可靠的,既证明了所选取指标的合理性及全面性,也可以很好的反映节理岩体隧道爆破质量等级,具有很强的工程实际意义。To determine surrounding rock factor, structural plane factor, blasting parameter factor and construction factor, 18 evaluation indexes were selected to evaluate the blasting quality of joint rock tunnel with the extenics method based on the matter element theory. Based on field survey and intrinsic discipline of data, the entropy weighting theory was proposed to determine the weighting coefficient of each evaluation index. The blasting quality of each tunnel section was assessed based on the association degree of tunnel blasting quality of typical sections, and then compared with the evaluation results from the Highway Tunnel Construction Technology Standard. Meanwhile, the results were also compared with the analytic hierarchy process, in which expert experiences are considered, and the combined weighting method. Results show that the evaluation results from the extenics, which are based on the entropy weighting theory, are the same as those from Highway Tunnel Construction Technology Standard, but they are superior to the results from analytic hierarchy process method and combined weighting method, indicating that the indexes and weighting coefficients utilized in the extenics model are reasonable and reliable. Hence, the rationality and comprehensiveness of the employed indexes are validated. In addition, the results can well reflect the actual blasting quality grade of joint rock tunnel, and have greatly practical engineering significance.

关 键 词：物元模型 可拓学 节理岩体 隧道爆破质量 熵值赋权法 

分 类 号：U455.6[建筑科学—桥梁与隧道工程]