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Fluid Dynamics & Materials Processing 2022年第1期18卷 29-39页

作者： Changchang Li zuguo mo Haibo Jiang Fengchun Yang College of Water and Architectural Engineering Shihezi UniversityShihezi832000China College of Water Resources and Hydropower Sichuan UniversityChengdu610065China

On-site monitoring and numerical simulation have been combined to analyze the stability of the jointed surrounding rock and the stress inside the lining structure of a sample deeply buried hydraulic *** show that the deformation around the tunnel was mainly concentrated in the range 51.37 mm∼66.73 mm,the tunnel circumference was dominated by shear failure,and the maximum plastic zone was about 3.90 *** the shotcrete treatment was performed immediately after the excavation,the deformation of the surrounding rock was reduced by 58.94%∼76.31%,and the extension of the plastic zone was relatively limited,thereby leading to improvements in terms of the stability of surrounding *** the support was provided at different time points,the stress of the surrounding rock in the shallow part of the tunnel was improved *** the tunnel section with high ground stress and joint development,when 10 cm steel fiber concrete spray layer and 40 cm C25 concrete secondary lining were used,the maximum tensile stress on the lining structure was 0.89 MPa,i.e.,it was less than the tensile strength of concrete,which indicates that the internal force of the lining can meet the overall requirements.

关键词： Diversion tunnel high ground stress lining mechanical characteristics numerical simulation

Blast damage zone strength reduction method for deep cavern excavation and its application

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Frontiers of Structural and Civil Engineering 2024年第2期18卷 236-251页

作者： Tianzhi YAO zuguo mo Li QIAN Yunpeng GAO Jianhai ZHANG Xianglin XING Enlong LIU Ru ZHANG State Key Laboratory of Hydraulics and mountain River Engineering College of Water Resources and HydropowerSichuan UniversityChengdu 610065China Power China Chengdu Engineering Corporation Limited Chengdu 610072China

The drill and blast(D&B)method is widely used to excavate underground spaces,but explosions generally cause damage to the ***,no blast simulation method can provide computational accuracy and *** this paper,a blast equivalent simulation method called the blast damage zone strength reduction(BDZSR)method is *** method first calculates the range of the blast-induced damage zone(BDZ)by formulae,then reduces the strength and deformation parameters of the rock within the BDZ ahead of excavation,and finally calculates the excavation damage zone(EDZ)for the D&B method by numerical *** method combines stress wave attenuation,rock damage criteria and stress path variation to derive the BDZ depth calculation *** formulae consider the initial geo-stress,and the reliability is verified by numerical *** calculation of BDZ depth with these formulae allows the corresponding numerical simulation to avoid the time-consuming dynamic calculation process,thus greatly enhancing the calculation *** method was applied to the excavation in Jinping Class II hydropower station to verify its *** results show that the BDZSR method can be applied to blast simulation of underground caverns and provide a new way to study blast-induced damage.

关键词： attenuation of stress wave deep-buried underground building drill and blast in situ stress

A macro-mesoscopic constitutive model for porous and cracked rock under true triaxial conditions

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3080-3098页

作者： Li Qian zuguo mo Jianhai Zhang Xianglin Xing Ru Zhang Tianzhi Yao Yunpeng Gao State Key Laboratory of Hydraulics and mountain River Engineering College of Water Resources and HydropowerSichuan UniversityChengdu610065China Power China Chengdu Engineering Corporation Limited Chengdu610072China

The complex mechanical and damage mechanisms of rocks are intricately tied to their diverse mineral compositions and the formation of pores and cracks under external *** rock tests reveal a complex interplay between the closure of porous defects and the propagation of induced cracks,presenting challenges in accurately representing their mechanical properties,especially under true triaxial stress *** paper proposes a conceptualization of rock at the mesoscopic level as a two-phase composite,consisting of a bonded medium matrix and frictional medium *** bonded medium is characterized as a mesoscopic elastic material,encompassing various minerals surrounding porous *** mechanical properties are determined using the mixed multi-inclusion *** of the bonded medium into the frictional medium occurs through crack extension,with its elastoplastic properties defined by the DruckerePrager yield criterion,accounting for hardening,softening,and *** and Eshelby’s equivalent inclusion methods are applied to the bonded and frictional media,*** macroscopic mechanical properties of the rock are derived from these mesoscopic ***,a True Triaxial Macro-Mesoscopic(TTMM)constitutive model is *** model effectively captures the competitive effect and accurately describes the stress-deformation characteristics of *** the TTMM model,the strains resulting from porous defect closure and induced crack extension are differentiated,enabling quantitative determination of the associated damage evolution.

关键词： Micromechanics Macroemesoscopic Homogenization Constitutive model Competitive effect

尾水洞“卜”形岔洞围岩稳定性及衬砌结构受力特性数值模拟分析

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吉林水利 2020年第2期 18-22页

作者：貊祖国新疆水利水电勘测设计研究院

本文依托于新疆某水电站,基于弹塑性本构模型,采用有限元数值模拟方法 ,对三维地下岔洞围岩及衬砌结构做数值计算分析,得到了尾水洞"卜"形岔洞围岩稳定性及衬砌结构受力特性。可为相关工程的支护结构设计提供了参考。

关键词：岔洞围岩稳定数值模拟

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高地温试验洞围岩温度现场监测与分析

陕西水利 2020年第7期 20-21,27页

作者：貊祖国新疆水利水电勘测设计研究院新疆乌鲁木齐830000

高地温条件对水工隧洞围岩稳定会产生较为显著的影响,温度场的存在使得围岩具有温度应力。因此,研究高地温条件下隧洞的温度场对围岩稳定具有重要意义。依托新疆某水利工程,采用现场试验的方法,对高地温引水隧洞围岩温度场进行监测分析... 详细信息

高地温条件对水工隧洞围岩稳定会产生较为显著的影响,温度场的存在使得围岩具有温度应力。因此,研究高地温条件下隧洞的温度场对围岩稳定具有重要意义。依托新疆某水利工程,采用现场试验的方法,对高地温引水隧洞围岩温度场进行监测分析,得出高地温隧洞围岩在不同工况下的温度场特性,得到温度场变化的主要影响因素,并提出复合衬砌的支护建议。研究结果可为相关高地温地下工程围岩温度场变化特征提供参考。

关键词：高地温隧洞现场监测

不同开挖方式下高地温引水隧洞围岩瞬态温度-应力耦合分析

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水力发电 2019年第2期45卷 58-63页

作者：貊祖国姜海波后雄斌石河子大学水利建筑工程学院新疆石河子832000

为研究高地温引水隧洞围岩在温度-应力耦合作用下的瞬态应力分布特性,以新疆某高地温引水隧洞为依托,基于mohr-Coulomb本构模型,采用有限元法分别对全断面开挖方式和分层开挖方式下的高地温引水隧洞围岩瞬态温度-应力耦合场进行模拟分... 详细信息

为研究高地温引水隧洞围岩在温度-应力耦合作用下的瞬态应力分布特性,以新疆某高地温引水隧洞为依托,基于mohr-Coulomb本构模型,采用有限元法分别对全断面开挖方式和分层开挖方式下的高地温引水隧洞围岩瞬态温度-应力耦合场进行模拟分析。结果表明,不同开挖方式下围岩塑性区不同,全断面开挖方式下围岩塑性区范围约为分层开挖条件下的2倍;隧洞开挖后随着时间的推移,围岩腰拱处压应力逐渐减小,高压应力区自洞壁逐渐向深处移动,围岩压应力最大值位于腰拱0. 4 m深度处;全断面开挖围岩最小主应力比分层开挖小18%。

关键词：高地温引水隧洞瞬态分析温度-应力耦合数值模拟

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高地温引水隧洞围岩热——应力耦合分析

水利水电技术 2017年第7期48卷 43-48页

作者：后雄斌姜海波貊祖国石河子大学水利建筑工程学院新疆石河子832000

针对新疆某高地温环境下的圆形隧洞,采用有限元分析程序,分别对不同围岩半径下的温度场分布进行模拟,并以不同围岩半径下围岩与支护接触面处的温度作为围岩合理计算范围取值的参考,结合有关理论分析的结果,确定出围岩最佳计算半径。在... 详细信息

针对新疆某高地温环境下的圆形隧洞,采用有限元分析程序,分别对不同围岩半径下的温度场分布进行模拟,并以不同围岩半径下围岩与支护接触面处的温度作为围岩合理计算范围取值的参考,结合有关理论分析的结果,确定出围岩最佳计算半径。在此基础上进一步研究隧洞施工期围岩温度、应力和位移场在热—应力耦合作用下的分布问题。研究结果表明,当围岩外部温度为80℃、隧洞内部温度为5℃时,隧洞开挖后考虑温度和应力共同影响下的围岩最佳计算半径为24 m。隧洞围岩温度沿围岩厚度方向呈非线性递增变化。与常温(20℃)情况相比,高地温的存在会使隧洞围岩最大主应力减小,同时也会在隧洞拱顶和底拱处产生拉应力。

关键词：高地温引水隧洞围岩热—应力耦合

寒区引水隧洞低温相变温度场-渗流场耦合模型及其数值模拟研究

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水力发电 2017年第11期43卷 19-22,47页

作者：姜海波貊祖国后雄斌金瑾石河子大学水利建筑工程学院新疆石河子832000

针对寒区引水隧洞围岩冻胀的多场耦合问题,考虑低温相变对岩体温度场和渗流场的影响,结合低温冻结条件下围岩的温度场-渗流场耦合模型,采用有限元法对新疆某电站引水隧洞工程围岩的冻结过程进行分析,研究低温相变条件下隧洞围岩温度场... 详细信息

针对寒区引水隧洞围岩冻胀的多场耦合问题,考虑低温相变对岩体温度场和渗流场的影响,结合低温冻结条件下围岩的温度场-渗流场耦合模型,采用有限元法对新疆某电站引水隧洞工程围岩的冻结过程进行分析,研究低温相变条件下隧洞围岩温度场和渗流特性的变化规律。研究结果表明:在长期的冻结过程中,围岩内部形成了冻结区与未冻结区;随着冻结时间的持续,冻结锋面向围岩内部推移,岩体冻结深度和冻结范围不断增大。含水岩体在冻结过程中,水分由未冻结区向冻结区迁移,其渗流速度在冻结缘处达到最大,为1.359×10^(-4)m/s,在未冻结区渗流速度较小,为4.1×10^(-6)m/s。

关键词：寒区引水隧洞低温相变冻结温度场-渗流场耦合

Synthesis of temperature-resistant and salttolerant surfactant SDB-7 and its performance evaluation for Tahe Oilfield flooding (China)

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Petroleum Science 2014年第4期11卷 584-589页

作者： Guo Jixiang Shi Xiao Yang zuguo Cao Jingjing Wang Lei Yin Ying Enhanced Oil Recovery Institute China University of Petroleum Beijing Research & Development Center Sinopec Lubricant Company LTD Engineering Technology Institute Northwest Oilfield Company SINOPEC Economy and Information Technology Commission of Bayingol mongolian Autonomous Prefecture Autonomous Prefecture

In order to improve the enhanced oil recovery of high-temperature and high-salt oilfields, a novel temperature-resistant and salt-tolerant surfactant （denoted as SDB-7） was synthesized and evaluated for the Tahe Oilfield （Xinjiang, China）, which is representative of high-temperature and high-salt oilfields. It has a central reservoir temperature of 140 ℃ and salinity of 22.6× 10^4 mg/L. The temperature-resistant and salt-tolerant performance, interfacial activity, oil displacement efficiency, aging properties, and adsorption properties of the synthesized surfactant were evaluated for Tahe Oilfield flooding. The results showed that the SDB-7 was temperature-resistant and salt-tolerant capacity of 140 ℃ and 22.6×10^4 rag/ L, respectively, oil displacement efficiency under static condition of 84%, and adsorption loss of 0.4 mg/ g （less than 1 mg/g-oil sand）. In the heat aging experiment （under the temperature of 140 ℃ for 60 days）, the oil-water interracial tension and oil displacement efficiency of SDB-7 were almost unchanged. The oil displacement experiments showed that, under the temperature of 140 ℃ and the salinity of 22.6× 10^4 mg/L, the surfactant SDB-7 can enhance oil recovery by 14.5% after water flooding,suggesting that SDB-7 has a promising application in high temperature and high salinity （HT/HS） reservoir.

关键词： Temperature-resistance salt-tolerance surfactant oil displacement experiments EOR

Angioblasts in Adult and Its Role in Ocular Disorders Due to Neovascularization

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Eye Science 2005年第3期21卷 158-162,178页

作者： Aihua Jiang Mei Zhang zuguo Liu Zhongshan Ophthalmic Center and Ocular Surface Center Sun Yat-sen University Guangzhou 510060 China

Blood vessel formation includes vasculogenesis and angiogenesis. Traditionally vasculogenesis is believed to occur in embryo, forming blood vessels by the differentiation of angioblasts, while angiogenesis is defined as the formation of new blood vessels that originate from pre-existing vessels, which happens both in embryo and ***, recent studies on angioblasts have shown that new blood vessel formation due to angioblast differentiation, once was believed to happen exclusively in embryo, also occurs in adult. These findings not only help us to understand the pathogenesis of new blood vessel formation, but also provide some new clues to investigate new therapeutic target for the treatment of angiogenesis.

关键词：成年视觉紊乱血管形成病理机制