文献类型：期刊文献

中文题名：基于逆Broyden秩1拟牛顿迭代法的岩体裂隙网络渗流特性研究

英文题名：A study of hydraulic properties of rock fracture networks based on rank-one inverse Broyden quasi-Newton method

作者：刘日成[1];蒋宇静[1,2];李博[3,1];王肖珊[1];徐帮树[4];蔚立元[5]

机构：[1]长崎大学工学部地盘环境研究室;[2]山东科技大学矿山灾害预防控制省部共建国家重点试验室培育基地;[3]绍兴文理学院土木工程学院;[4]山东大学岩土与结构工程研究中心;[5]中国矿业大学深部岩土力学与地下工程国家重点实验室

年份：2016

卷号：37

期号：1

起止页码：219

中文期刊名：岩土力学

外文期刊名：Rock and Soil Mechanics

收录：CSTPCD、、北大核心2014、ESCI(收录号：WOS:000407752200026)、EI(收录号：20161302155165)、CSCD2015_2016、Scopus(收录号：2-s2.0-84962598568)、WOS、北大核心、CSCD

基金：This work was supported by the National Natural Science Foundation of China(51279097, 51579239, 50909056), Grant-in-Aid for Young Scientists (B) of Japan(15K18302) and Shandong Provincial Natural Science Foundation of China(Grant No. ZR2014EEM014).

语种：中文

中文关键词：逆Broyden秩1拟牛顿迭代法;离散裂隙网络;裂隙粗糙度;流体惯性效应;等效渗透系数;非线性渗流

外文关键词：rank-one inverse Broyden quasi Newton method; discrete fracture network; fracture surface roughness; inertial effect of fluid; equivalent permeability; nonlinear flow

中文摘要：岩体裂隙粗糙度和流体惯性效应是影响岩体裂隙网络等效渗透性的重要因素。首先回顾了单裂隙中裂隙粗糙度和流体惯性效应对其过流能力的影响;然后基于逆Broyden秩1拟牛顿迭代法求解控制裂隙内流体流动的非线性方程组,研究岩体裂隙粗糙度和流体惯性效应对离散裂隙网络（DFN）等效渗透性的影响;最后,基于两种不同边界条件,对离散裂隙网络模型内流体的流动特性进行了探讨。结果表明,当水力梯度较小（〈0.5）时,裂隙粗糙度和流体惯性效应对离散裂隙网络渗透性的影响很小;当水力梯度较大（〉0.5）时,裂隙粗糙度和流体惯性效应对离散裂隙网络渗透性的影响随水力梯度的变化而显著变化;在两种边界条件下,当水力梯度在0.1～10.0之间时,裂隙粗糙度和流体惯性效应对离散裂隙网络过流能力的最大影响分别为18.1%和27.5%。所以,当水力梯度较大时,需要在离散裂隙网络模型的渗流计算中考虑裂隙粗糙度和流体惯性效应的影响。

外文摘要：Fracture surface roughness and inertial effect of fluid in fractured rock masses are important factors for characterizing the hydraulic behaviors of rock masses in many rock engineering projects. This study focuses on the influences of fracture surface roughness and inertial effect of fluid on the hydraulic behaviors of 2D discrete fracture networks（DFNs）, by solving a set of nonlinear fluid flow equations using the rank-one inverse Broyden quasi-Newton method. Two different boundary conditions are applied to the DFNs; and then the permeability coefficients of the models are calculated. The results show that when the hydraulic gradient J is small（〈0.5）, the influences of the fracture surface roughness and the inertial effect of fluid on the permeability of DFN are negligible. When the hydraulic gradient J is relatively large（〉0.5）, the influences of fracture surface roughness and the inertial effect of fluid on the permeability of DFN increase with the increment of the hydraulic gradient. Under two kinds of boundary conditions, the maximum influences of fracture surface roughness and the inertial effect of fluid on the permeability of DFN can be as high as 18.1% and 27.5%, respectively, corresponding to the hydraulic gradient in the range of 0.1-10. Therefore, the fracture surface roughness and the inertial effect of fluid need to be considered when calculating the hydraulic properties of fluid flow in 2D rock fracture networks, especially when the hydraulic gradient is large.