基于渗流-应力耦合的近水平层状裂隙岩体渗透张量估算

doi:10.11988/ckyyb.20231110

raybet体育在线院报 ›› 2025, Vol. 42 ›› Issue (2): 115-121.DOI: 10.11988/ckyyb.20231110

基于渗流-应力耦合的近水平层状裂隙岩体渗透张量估算

王俊智¹^,²(), 陈艳国¹^,², 张海丰¹^,², 万伟锋¹^,²()

¹ 黄河勘测规划设计研究院有限公司, 郑州 450003
² 水利部黄河流域水治理与水安全重点实验室(筹), 郑州 450003

收稿日期:2023-10-14 修回日期:2024-05-12 出版日期:2025-02-01 发布日期:2025-02-01
通信作者:
万伟锋(1981-),男,河南许昌人,正高级工程师,博士,主要从事水利工程水文地质生产及研究工作。E-mail:wwfmt@163.com
作者简介:
王俊智(1987-),男,河南巩义人,高级工程师,博士,主要从事水利工程水文地质生产及研究工作。E-mail: wangjz.cugb@gmail.com
基金资助:
国家自然科学基金青年基金项目(41902245); 河南省重点研发与推广专项(232102320314); 黄河勘测规划设计研究院有限公司自主研发项目(2021-KY48)

Estimation of Hydraulic Conductivity Tensor of Nearly-horizontal Stratified Fractured Rock Mass Based on Seepage-Stress Coupling Theory

WANG Jun-zhi¹^,²(), CHEN Yan-guo¹^,², ZHANG Hai-feng¹^,², WAN Wei-feng¹^,²()

¹ Yellow River Engineering Consulting Co., Ltd., Zhengzhou 450003, China
² Key Laboratory of Water Management and Water Security for Yellow River Basin of Ministry of Water Resources (under Construction), Zhengzhou 450003, China

Received:2023-10-14 Revised:2024-05-12 Published:2025-02-01 Online:2025-02-01

摘要/Abstract

摘要：

定量评价裂隙岩体的渗透能力及各向异性特征是水利水电工程地质勘察的重要内容,可为防渗帷幕设计、基坑降排水设计、水工隧洞突涌水预测等提供技术支撑。为了探究近水平层状裂隙岩体的渗透能力,介绍了一种基于“渗流-应力”耦合理论的渗透张量估算方法。该方法联合使用常规垂直钻孔压水试验、水平定向钻孔压水试验与岩体应力测试,通过建立“结构面法向应力-结构面张开度”负指数函数关系,估算结构面的等效水力张开度,计算岩体的渗透张量。该方法在黄河古贤水利枢纽工程中进行了实际应用,分析了坝址区岩体渗透参数各向异性的发育特征。结果表明,相较于常规垂直孔压水试验,所提方法更能表征岩体的渗透能力和各向异性渗透特征,其换算得到的综合渗透系数约是常规垂直孔压水试验的15倍。研究成果可为渗控工程设计提供科学指导。

关键词: 裂隙岩体, 渗透张量, 定向压水试验, 地应力测试, 黄河古贤水利枢纽工程

Abstract:

Quantitative evaluation of the permeability and anisotropy of fractured rock masses is crucial for engineering geological investigations in water conservancy and hydropower projects. Such evaluations provide essential technical support for designing anti-seepage curtains, foundation pit drainage systems, and predicting water inrush in hydraulic tunnels. In this paper, we introduce a method for estimating the hydraulic conductivity tensor of nearly horizontally layered fractured rock masses based on “seepage-stress” coupling theory. This method integrates conventional vertical borehole water pressure tests, horizontal directional borehole water pressure tests, and rock mass stress tests. By establishing a negative exponential function relationship between normal stress and aperture, the equivalent hydraulic aperture of the structural plane is estimated, and the hydraulic conductivity tensor of the rock mass is calculated. This method has been applied to the Guxian water resources management project on Yellow River as a case study. The anisotropy of the hydraulic conductivity in the dam site area was analyzed. Results demonstrate that, compared with conventional vertical borehole water pressure tests, the proposed method better characterizes the permeability and anisotropic properties of the rock masses. Specifically, the comprehensive permeability coefficient obtained using the proposed method is approximately 15 times that of conventional tests, providing valuable scientific guidance for the design of seepage control engineering.

Key words: fractured rock mass, hydraulic conductivity tensor, directional water pressure test, in-situ stress test, Yellow River Guxian water resources management project

中图分类号:

TV543灌浆和防渗墙工程

王俊智, 陈艳国, 张海丰, 万伟锋. 基于渗流-应力耦合的近水平层状裂隙岩体渗透张量估算[J]. raybet体育在线院报, 2025, 42(2): 115-121.

WANG Jun-zhi, CHEN Yan-guo, ZHANG Hai-feng, WAN Wei-feng. Estimation of Hydraulic Conductivity Tensor of Nearly-horizontal Stratified Fractured Rock Mass Based on Seepage-Stress Coupling Theory[J]. Journal of Changjiang River Scientific Research Institute, 2025, 42(2): 115-121.

图/表 6

图1 近水平层状裂隙岩体结构面、应力分布特征及压水试验钻孔的布置示意图

Fig.1 Schematic diagram of structural planes,in-situ stress distribution, and layout of water pressure test boreholes for nearly-horizontal stratified fractured rock mass

图2 近水平层状裂隙岩体渗透张量的估算步骤

Fig.2 Steps for estimating the hydraulic conductivity tensor of nearly-horizontal stratified fractured rock mass

图3 基于单结构面岩体力学理论计算结构面法向正应力

Fig.3 Schematic diagram of calculating the normal stress of structural planes based on single structural plane rock mass mechanics theory

表1 裂隙岩体结构面几何特征及法向正应力

Table 1 Geometric characteristics and normal stresses of the structural planes of fractured rock mass

代表性结构面组	产状		间距s/ (m·条^-1)	等效水力张开度 $b$ /mm	法向应力σ_n/ MPa
代表性结构面组	倾向α/ (°)	倾角β/ (°)	间距s/ (m·条^-1)	等效水力张开度 $b$ /mm	法向应力σ_n/ MPa
J1	310	90	1.5	0.274 0	1.95
J2	30	90	1.5	0.008 9	4.61
J3	NAN	0	3.0	0.096 8	2.81

表1 裂隙岩体结构面几何特征及法向正应力

Table 1 Geometric characteristics and normal stresses of the structural planes of fractured rock mass

代表性结构面组	产状		间距s/ (m·条^-1)	等效水力张开度 $b$ /mm	法向应力σ_n/ MPa
代表性结构面组	倾向α/ (°)	倾角β/ (°)	间距s/ (m·条^-1)	等效水力张开度 $b$ /mm	法向应力σ_n/ MPa
J1	310	90	1.5	0.274 0	1.95
J2	30	90	1.5	0.008 9	4.61
J3	NAN	0	3.0	0.096 8	2.81

图4 水平定向钻孔及常规垂直钻孔压水试验统计结果

Fig.4 Statistical results of horizontal directional and conventional vertical borehole water pressure tests

图5 目标岩体结构面张开度与岩体应力的负指数函数关系

Fig.5 Negative exponential relationship between the opening of structural plane and rock mass stress

[1]	万发, 蒋中明, 李海峰, 梁贤浩. CAES储气库衬砌开裂对裂隙围岩两相渗流和传热特性的影响[J]. raybet体育在线院报, 2023, 40(11): 102-110.
[2]	彭述权, 张珂嘉, 康景宇, 樊玲, 王凡. 裂隙岩体微生物阻渗机理试验研究[J]. raybet体育在线院报, 2020, 37(9): 57-63.
[3]	徐斌, 刘汝明, 陈子扬, 任强. 瞬态压力分析方法在小型压裂地应力测试中的应用[J]. raybet体育在线院报, 2020, 37(2): 81-86.
[4]	杜强，王超，赵光明，贾瀚文. 考虑应变软化效应的裂隙岩体损伤本构模型的开发及应用[J]. raybet体育在线院报, 2015, 32(11): 82-86.
[5]	陈俊国，刘卫群，梁浩楠. 地下岩体裂隙蠕变渗流耦合分析[J]. raybet体育在线院报, 2015, 32(11): 45-51.
[6]	周时,黄宜胜,胡耀普,刘玲,左亚. 玛尔挡水电站边坡岩体宏观力学参数优化反演及应用[J]. raybet体育在线院报, 2014, 31(7): 49-52,59.
[7]	邬爱清, 朱杰兵. 深部岩石工程力学特性及地应力测试研究综述[J]. raybet体育在线院报, 2014, 31(10): 43-50.
[8]	蒋中明，伍东卫，赵海斌，冯树荣. 复杂裂隙岩体力学特性的数值试验研究[J]. raybet体育在线院报, 2013, 30(11): 72-76.
[9]	徐明明, 徐进, 任浩楠, 杨昊天, 何雅琴. 大理岩岩体力学特性的水压-应力耦合试验研究[J]. raybet体育在线院报, 2012, 29(8): 34-38.
[10]	赵宏海, 李磊, 秦福刚, 许光泉, 张海涛, 谢治刚. 裂隙岩体加固浆材的试验研究[J]. raybet体育在线院报, 2012, 29(7): 77-81.
[11]	郭喜峰，张明欣, 尹健民，刘元坤 . 宝塔山特长隧道岩体应力场特征分析[J]. raybet体育在线院报, 2011, 28(6): 55-58.
[12]	徐栋栋，邬爱清，孙玉杰 . 某水电站引水隧洞突水数值模拟[J]. raybet体育在线院报, 2010, 27(8): 44-49.
[13]	汪旭涛, 陈新国, 王亮. 某裂隙岩质边坡渗透张量的确定及应用[J]. raybet体育在线院报, 2008, 25(2): 46-50.
[14]	张家发,李思慎. 三峡船闸高边坡裂隙岩体渗流场三维有限元分析[J]. raybet体育在线院报, 1993, 10(1): 9-13.
[15]	李思慎. 三峡工程渗流问题研究[J]. raybet体育在线院报, 1992, 9(S1): 99-106.

基于渗流-应力耦合的近水平层状裂隙岩体渗透张量估算

Estimation of Hydraulic Conductivity Tensor of Nearly-horizontal Stratified Fractured Rock Mass Based on Seepage-Stress Coupling Theory

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 6

相关文章 15

编辑推荐

Metrics

本文评价