李晓昭
个性化签名
- 姓名:李晓昭
- 目前身份:
- 担任导师情况:
- 学位:
-
学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
- 职称:-
-
学科领域:
地质学
- 研究兴趣:
李晓昭,1968年4月生,博士、教授、博士生导师,南京大学地下空间与地质环境研究所所长、南京大学核能地质与核环境研究中心副主任。
1996年6月在中国矿业大学矿山建设工程(现岩土工程)国家重点学科获工学博士学位;1996-1998年在南京大学水文地质工程地质国家重点学科作博士后。曾任新加坡南洋理工大学visiting researcher;奥地利格拉茨理工大学guest professor。
现兼任:国际隧道与地下空间协会(ITA-AITES)地下与环境委员会委员、国际岩土工程安全协作网(GEOSNet)核心成员、中国岩石力学与工程学会废物地下处置专委会副主任、中国岩石力学与工程学会青年工作委员会副主任、中国土木工程学会隧道与地下工程风险管理专业委员会副主任、中国岩石力学与工程学会地下空间分会常务理事、地下工程分会常务理事、江苏省岩土力学与工程学会常务理事、《地下空间与工程学报》编委、科技部评审专家等。
主持国家国际科技合作项目、国家与省部级自然科学基金、人才基金、科技计划以及重大工程科研课题30余项,6项成果经鉴定“达到国际先进水平”;发表论著100余篇,获得教育部科技进步一等奖、中国公路科技进步二等奖、全国普通高校优秀教材二等奖等科技奖励多项,并获专利两项,2001年荣获全国青年地质科技奖,2004年入选教育部首批“新世纪优秀人才”。
-
主页访问
3559
-
关注数
0
-
成果阅读
828
-
成果数
10
【期刊论文】Prediction and prevention of sandstone-gas outbursts in coal mines
李晓昭, Xiao-Zhao Li a, *, An-Zeng Hua b
International Journal of Rock Mechanics & Mining Sciences 43(2006)2-18,-0001,():
-1年11月30日
Rock-gas outbursts, including sandstone-gas outbursts, become more and more serious with increasing depth of engineering and more difficult geological environments and their prediction and prevention are one of the major challenges to the rock mechanics and rock engineering community. Comparatively speaking, sandstone-gas outbursts have not been well studied and are less documented than coal-gas outbursts. So the exchange of information, especially in the field of the prediction and prevention of sandstone-gas outbursts, is important. This paper outlines an outburst in which over 2000 tonnes of oil-bearing sandstone were ejected with 900,000m3 of gas in the air shaft of Haishiwan Colliery; this is the largest sandstone-gas outburst in China to date. The theoretical and technical investigation relating to the prediction and prevention of such sandstone-gas outbursts, taking the Haishiwan Colliery project as the background, are described in the paper. A comprehensive prediction method employing a suite of macro-and micro-indices gained from test drilling and laboratory testing on rock cores is proposed in the paper. It is found that the combination and comparison of the results of field observations, measurements and laboratory tests are helpful to ensure the reliability of outburst prediction. The principle and scheme of preventive drilling and discharging, including the pattern and number of releasing boreholes and the safety distance for drilling, were studied. It is revealed that discharging of gas can also release rock mass strain energy, which should be taken into consideration in the determination of the number of releasing boreholes. For the purpose of releasing, the Tubular Destressed and Depressurized Protective Zone (TDDPZ) pattern proposed in the paper is more efficient and economical than the currently applied fan-shaped pattern of releasing boreholes. The accuracy of prediction and the efficiency of the preventive measures were verified by successful excavation through the oil-and gas-bearing sandstone units in Haishiwan Colliery.
Sandstone-gas outburst, Comprehensive prediction, Macro-and micro-indices, Preventive drilling and discharging
-
120浏览
-
0点赞
-
0收藏
-
0分享
-
216下载
-
0评论
-
引用
【期刊论文】钻孔和巷硐周围流体压力变化对围岩变形及应力状态的影响
李晓昭, LI Xiaozhao , ZHANG Di , HUA Anzeng
高校地质学报,2002,8(1):106~112,-0001,():
-1年11月30日
钻孔、巷硐周围流体压力的分布和变化对围岩变形和应力状态有着显著影响。但这是一个涉及多个变量、多种响应的动态耦合过程,尚无法用解析法解算。孔硐周围的流体压力的动态变化又难以实现物理模拟。以钻孔排放瓦斯为例,通过数值模拟,结合宏观观测结果和微观机制的分析,对其规律和一些工程现象与措施的机理作了初步分析。
孔硐围岩, 流体压力, 变形, 应力状态, 数值模拟, 宏微观分析
-
53浏览
-
0点赞
-
0收藏
-
0分享
-
159下载
-
0评论
-
引用
李晓昭, LI Xiao-zhao, LUO Guo-li, ZHUANG Gan-cheng, ZHANG Bo-wen, LIU Guang-cai, ZHANG SHen-xiong
铁道工程学报,2004,1:11~16,-0001,():
-1年11月30日
工程地质勘察监理,不同于施工监理或设计监理,在我国尚处于探索阶段。由于地铁工程勘察的复杂性和高要求,为保证高效、优质完成勘察任务,开展监理工作十分必要。本文结合作者在南京地铁工程勘察监理工作的探索,探讨了监理的任务、依据、程序和主要内容,分析了地铁工程勘察监理的特点、宜遵循的原则以及监控的关键与要点。
勘察监理, 地铁, 工程
-
69浏览
-
0点赞
-
0收藏
-
0分享
-
302下载
-
0评论
-
引用
李晓昭, LI Xiao-zhao, LUO Guo-yu, YU Jin, ZHANG Di
湘潭矿业学院学报,2002,17(4):50~55,-0001,():
-1年11月30日
地下工程常常面临突水灾害的威胁。除了采动破裂导致岩层阻水能力丧失外,剪应力集中区内结构面错动引起地下水的导升亦是突水发生的重要机制。围岩的层状特征和岩性差异,使得某些位置的软(硬)岩层成为控稳优势层。以突水系数等经验方法为参照,通过对优势层及其组合特征的分析,明确其有利或不利的控稳机制,可为突水防治提供更为科学、可靠的依据. 图5,表2,参13。
地下工程, 突水, 变形失稳机制, 控稳优势层
-
44浏览
-
0点赞
-
0收藏
-
0分享
-
145下载
-
0评论
-
引用
李晓昭, LI Xiao-zhao , LUO Guo-yu , CHEN Zhong-sheng
岩土工程学报,2002,24(6):696~700,-0001,():
-1年11月30日
断层突水事故中,大多是原始地质条件下的非导水断层在采动影响下发生突水。借助数值模拟,并结合大量工程事例分析。对断裂变形活化与导水机制进了分析研究发现,断裂变形活化与导水具有明显的时空效应。对时空效应的充分认识可为科学的工程设计和施工组织以及有效的超前探测和工程监测提供依据。
突水, 断裂, 采动活化导水
-
62浏览
-
0点赞
-
0收藏
-
0分享
-
109下载
-
0评论
-
引用
李晓昭, LI Xiao-zhao, LUO Guo-yu
中国地质灾害与防治学报,2003,14(1):37~41,-0001,():
-1年11月30日
突水是地下工程常遇到的主要和危害严重的工程地质现象。工程实例分析表明,地下工程中大的涌水和突水大多与地质结构面,特别是断裂有关。文中分析了断裂控制地下水赋存和运移的规律,以及可能导致突水的富水优势断裂的特征。由于断裂突水的复杂性和众多的影响因素,将地质机制分析、经验判断和定量指标与评价模型相结合是重要的,也是可行的。文中介绍了一种富水优势断裂的量化分级方法,讨论了相应的预测与防治工程对策。
突水, 断裂, 富水优势断裂, 综合量化评价
-
63浏览
-
0点赞
-
0收藏
-
0分享
-
73下载
-
0评论
-
引用
李晓昭, Li Xiaozhao, Xiao Lin, Cheng Jianjun, Liu Qi
岩石力学与工程学报,2004,23(10):1681~1688,-0001,():
-1年11月30日
由于风化会对岩石强度、刚度和耐久性产生重大影响,故在岩石工程勘察设计中需对其进行重点研究。风化是润扬大桥花岗岩类基岩岩体质量和桥基选址与设计的控制因素之一。系统的地质分析和多种测试结果表明,桥区风化壳厚度的变化很大,岩性以及地壳升降、断裂切割、卸荷作用、江水下切与入渗等地质作用是控制花岗岩风化作用及其风化岩分布的主要因素;桥区花岗岩易风化、卸荷敏感,处于化学风化的早期阶段;细密的蚀变裂隙对岩石强度起着控制作用。在此基础上讨论了风化带来的主要岩土工程问题以及桥型方案、基础选址与设计、地基参数取值以及风化因素控制等方面的工程对策。
工程地质, 花岗岩, 风化, 影响因素, 岩土工程问题
-
91浏览
-
0点赞
-
0收藏
-
0分享
-
86下载
-
0评论
-
引用
李晓昭, LI Xiao-zhao , LUO Guo-yu , GONG Hong-xiang , YAN San-bao , ZHANG Di
岩石力学,2004,5:759~763,-0001,():
-1年11月30日
工程地质岩组的划分是岩体质量评价的基础。当大型工程揭露土层很多时,进行土体工程地质层组的划分亦是十分必要的。它可以更为清晰的反映场地地质结构的变化规律,便于地质模型的概化和参数研究,有助于抓住主要工程地质问题进行评价,便于设计师的理解和应用。以南京地铁南北线一期工程为例,探讨了土体工程地质岩组的划分问题。通过以层组为基础的参数离散性统计、工程地质模型与工程地质问题的分析可以看出该层组划分方案的合理性与工程意义。
土体, 工程地质层组, 南京地铁
-
80浏览
-
0点赞
-
0收藏
-
0分享
-
208下载
-
0评论
-
引用
【期刊论文】Geological and geotechnical investigation in a metro project in Nanjing, China
李晓昭, Xiao-Zhao Li a, *, Guo-Yu Luo a, Ya-Dong Liu b, Di Zhang a, San-Bao Yan c
Tunnelling and Underground Space Technology 19(2004)521,-0001,():
-1年11月30日
Currently, there are six cities constructing their metro systems in China, among which, the Nanjing metro project is characterized by its complicated and unfavorable geological conditions, such as varied topography, rugged bedrocks, many faults passing through, rapid variation in lithology and geotechnical properties, soft ground, high groundwater table and multiple groundwater types. Therefore, the geological and geotechnical investigations play a vital role in the project. This paper describes and discusses the investigations taken in the project. From a seismological point of view, the project is in a relatively stable tectonic setting, the major regional active faults are a little far. Among many faults found in the city area, the NWW Dinghuaimen-Gulou fault and the NNW Nanjing-Hushu fault merit attention to their influences on the foundation stability. High groundwater table and multiple groundwater types feature the hydrogeological conditions. The paper describes the hydrogeological characteristics and parameters on the basis of groundwater type division. The inflow prevention of abundant pore water in ancient riverbed, fault water in Gulou and karst water in Xiaohongshan are diffcult. Along the metro axis, the local morphology can be divided into five sections: three sections of tectonic denudated lowrise hills and two sections of ancient channel alluvial plains. As many as 50 of Quaternary soil formations have been encountered. They are too many for architects to conceive and establish the engineering geological model. Therefore, generalization and division of engineering geological strata groups is necessary. The Quaternary deposits at the Metro site were divided according to their origin and relevant age into four engineering geological strata groups and subdivided on the basis of their composition, physical state and geotechnical properties into distinct subgroups. Data from this study indicate that the division is feasible and the subgroup II2 (CS) and III2 (CS), which are soft cohesive soils of Holocene and late Pleistocene respectively, represent the most sensitive and weak geotechnical unit, and the Holocene sandy soils subgroup II4 (SL) is of the most potential danger of liquefaction. None of the current rock mass classification systems has been found to originate from and be adequate for the shallow metro tunnel. The CGIMC, Vp and BQ systems have been combined in this study. The study indicates that the combination of multiple systems, qualitative and quantitative, is helpful to ensure the reliability of rock masses evaluation. To overcome the deficiency of the rock mass intactness index Kv and the BQ system in the national standard, their determination methods were modified. The paper describes in details the modified Kv and BQ procedure taking account of the characteristics of the rock masses at the metro site. The rock masses are categorized into very poor, poor and fair quality. The poor conditions of the rock masses are largely due to intensive weathering and dense fracturing. Along the metro axis, eight geotechinal zones were divided according to their identical characters of topographical, engineering geological and hydrogeological conditions and construction methods. The paper highlights the different geotechnical problems and challenges that will be encountered in different geotechnical zones.
Metro, Engineering geological investigation, Engineering geological strata group, Rock mass quality, Geotechnical zoning and assessment
-
149浏览
-
0点赞
-
0收藏
-
0分享
-
141下载
-
0评论
-
引用
李晓昭, Li Xiaozhao , An Yingjie , Yu Jin , Xu Mingjie , Liu Tong , Zhang Yangsong , Luo Qixian
岩石力学与工程学报,2003,22(12):2086~2092,-0001,():
-1年11月30日
声波测试是工程岩体质量评价的最主要手段之一。将岩体与岩块的纵波波速比的平方定义为岩体的完整性系数,不仅为国内外学者广泛认同,而且是现行规范的定义。这是源于如下认识:原位岩体的纵波波速小于其中岩块的波速;岩体越破碎,小得越多。然而,通过润扬大桥声波测试发现,用通常手段得到的大部分岩体的测井波速反而大于岩样波速。对该桥基岩40余个钻孔数百个岩样进行了多种手段的对比研究和综合分析,探讨了测试结果的可靠性及产生原因,进而提出了岩芯卸荷扰动和卸荷敏感岩体的概念和相应的工程对策。
岩体力学, 纵波波速, 岩芯卸荷扰动, 卸荷敏感岩体
-
97浏览
-
0点赞
-
0收藏
-
0分享
-
113下载
-
0评论
-
引用