采矿与安全工程学报Issue(1)：152-157,6.DOI:10.13545/j.cnki.jmse.2016.01.024
基于Morris法的单裂隙岩体温度场参数灵敏度分析
Parameter sensitivity analysis of temperature field in single fracture rock mass based on Morris
摘要
Abstract
Based on the three-dimensional discrete element numerical simulation (3DEC), the model of flow and heat transfer in single fracture rock mass has been established. Furthermore,combined with global sensitivity analysis method of Morris, the“elementary effect”of each parameter has been cal-culated by the value variation of one parameter in turn. In addition, the mean value μ and variance σhave also been obtained. Moreover, according to the value ofμandσ,the effect of each parameter on model temperature output and the law of the spatial and temporal distribution ofμandσhave been ana-lyzed. Research results have shown that:slit aperture (b), fluid-rock heat transfer coefficient (h),rock Thermal conductivity (KT), rock mass specific heat (Cs), and fluid specific heat (Cf) have an important impact on the temperature output of the model, what is more, rock thermal conductivity (KT), rock mass specific heat (Cs), and slit aperture (b) have a great interaction with other parameters. With the increas-ing of time step,μandσcould be basically divided into 3 stages:rapidly increasing stage, slowly in-creasing stage and stable stage. Furthermore, along with the direction of fracture fluid flow and crack normal, the value ofμandσhas presented a decreasing tendency. More interestingly, compared with the negative influence of b and Cf on the temperature value, Cs has presented a positive effect. However, for the different positions of h, u and KT, those parameters have both positive and negative effects.关键词
单裂隙岩体/温度场/Morris法/参数灵敏度分析Key words
single fracture rock/temperature field/Morris/parameter sensitivity analysis分类
矿业与冶金引用本文复制引用
刘波,金爱兵,高永涛,邓富根..基于Morris法的单裂隙岩体温度场参数灵敏度分析[J].采矿与安全工程学报,2016,(1):152-157,6.基金项目
中央直属高校基本科研业务费项目(FRF-SD-12-002A)；霍英东青年教师基金项目(122024) （FRF-SD-12-002A）
