陈洪凯
博士研究生 教授
枣庄学院 城市与建设工程学院
公路泥石流病害及危岩灾害
惟不懈者能登彼岸
- 姓名:陈洪凯
- 目前身份:在职研究人员
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师, 优秀教师/优秀教育工作者
- 职称:高级-教授
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学科领域:
岩土力学
- 研究兴趣:公路泥石流病害及危岩灾害
陈洪凯,男,1964年10月生,重庆江津人,二级教授,博士生导师。1991年兰州大学自然地理学硕士研究生毕业,1996年重庆建筑大学岩土工程专业博士研究生毕业,2010年重庆大学矿业工程博士后出站。1991年6月至2018年5月,在重庆交通大学工作,于1995年破格晋升副教授,1999年破格晋升教授。2018年6月迄今在枣庄学院工作,任城建学院副院长,枣庄市矿区地质减灾与生态修复重点实验室主任,组建了枣庄学院土木工程减灾与环境修复团队。现为新世纪百千万人才工程国家级人选、重庆市两江学者特聘教授、湖北省楚天学者特聘教授、重庆市首席专家、中国岩石力学与工程学会理事、中国水土保持学会泥石流滑坡专委会理事,获得国务院政府特殊津贴、振兴重庆争光贡献奖、重庆市杰出专业技术人才、全国优秀教师等荣誉称号,《振动与冲击》(EI)、《防灾减灾工程学报》(CSCD)、《重庆师范大学学报》(CSCD)等杂志编委。
针对岩石崩塌、公路泥石流、水库岸坡及矿区地质减灾与环境修复问题,从事地貌过程减灾与环境修复、岩土与结构工程减灾研究。在我国开辟了公路泥石流和危岩崩塌两个研究方向,系统构建了公路泥石流和危岩崩塌减灾理论与技术体系,独立编撰了国内首部公路泥石流防治工程设计施工指南和国内首部危岩崩塌防治工程设计规范。研究成果具有重要的科学价值和工程实用性,总体处于国际先进水平,在泥石流磨蚀、危岩安全寿命等方面达到国际领先水平。出版专著11部,授权发明专利47项,发表论文400余篇,研究成果总体处于国际先进水平,部分达到国际领先水平,获得国家科技进步二等奖1项、省部级(含全国一级学会)科技进步一等奖6项、二等奖18项。培养博士后、博士、硕士130余人。
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【期刊论文】Method to calculate fatigue fracture life of control fissure in Perilous Rock
陈洪凯, CHEN Hong-kai, TANG Hong-mei
,-0001,():
-1年11月30日
Rupture and safety of perilous rock are dominated by control fissure behind perilous rock block. Based on model-Ⅰand model-Ⅱ stress strength factors of control fissure under acting of weight of perilous rock, water pressure in control fissure and earthquake forces, method to calculate critical linking length of control fissure is established. Take water pressure in control fissure as a variable periodic load, and abide by P-M criterion, when control fissure is filled with water, establish the method to calculate fatigue fracture life of control fissure in critical status by contributing value of stress strength factor stemming from water pressure of control fissure in Paris’s fatigue equation. Further, parameters C and m of sandstone with quartz and feldspar in the area of the Three Gorges Reservoir of China are obtained by fatigue fracture testing.
perilous rock, control fissure, fatigue fracture, life
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【期刊论文】DAMAGE MODEL OF CON TROL FISSURE IN PERILOUS ROCK
陈洪凯, CHEN Hong-kai, TANG Hong-mei, YE Si-qiao
Applied Mathematics and Mechanics(English Edition), 2006, 27(7): 967-974,-0001,():
-1年11月30日
Hitherto,perilous rock is the weakest topic in disasters studies.Specially, damage of control fissure under loads is one key technique in study of develop mechanism of perilous rock.Damage division of end area of control fissure was defined by authors,then calculation methods of timed-Poisson’s ratio and timed-Young’s modulus were established in damage mechanics theory.Further,the authors set up dam age constitutive equation of control fissure.which founds important basis to numerical simulation for control fissure to develop.
perilous rock, control fissure, damage area, dam age model, application
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51浏览
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【期刊论文】RESEARCH ON M ETHOD TO CALCULATE VELOCITIES OF SOLID PHASE AND LIQUID PHASE IN DEBRIS FLOW
陈洪凯, CHEN Hong-kai, TANG Hong-mei, CHEN Ye-ying
Applied Mathematics and Mechanics(English Edition), 2006, 27(3): 399-408,-0001,():
-1年11月30日
Velocities of solid phase and liquid phase in debris flow are one key problem to research on impact and abrasion mechanism of banks and control structures under action of debris flow。Debris flow was simplified as two-phase liquid composed of solid phase with the same diameter particles and liquid phase with the same mechanical features。Assume debris flow was one-dimension two-phase liquid moving to one direction.then general equations of velocities of solid phase and liquid phase were founded in two-phase theory.Methods to calculate average pressures,volume forces and surface forces of debris flow control volume were established.Specially,surface forces were ascertained using Bingham’s rheology equation of liquid phase and Bagnold’s testing results about interaction between particles of solid phase.Proportional coefficient of velocities between liquid phase an d solid phase was put forward,meanwhile,divergent coefficient between theoretical velocity and real velocity of solid phase was provided too.To state succinctly before.method to calculate velocities of solid phase and liquid phase was obtained through solution to general equations.The method is suitable for both viscous debris flow and thin debris flow.Additionally.velocities every phase can be identified through analyzing deposits in-situ after occurring of debris flow.It is obvious from engineering case the result in the method is consistent to that in real-time field observation。
debris flow, two-phase fluid, velocities of solid phase an d liquid phase, calculation method, verification
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【期刊论文】RESEARCH ON ABRASION OF DEBRIS FLOW TO HIGH-S PEED DRAINAGE S TRUCTURE
陈洪凯, CHEN Hong- kai , , TANG Hong-mei , WU Si-fei
Applied Mathematics and Mechanics(English Edition, Vol. 25, No. 11, Nov 2004),-0001,():
-1年11月30日
As one weak topic in research of debris flow, abrasion of debris flow shortens obviously application life of control structure composed of concrete. High-speed drainage structure, one of the most effective techniques to control giant debris flow disaster, has shortened one- third application life due to abrasion by debris flow. Based on velocity calculation method founded by two-phase theory, research of abrasion mechanism of debris flow to high-speed drainage structure was made. The mechanism includes both abrasion mechanism of homogeneous sizing and shearing mechanism of particle of debris flow to highspeed drainage trough structure. Further abrasion equations of both sizing and particle were established by Newton movement theory of debris flow. And abrasion amount formula of the high-speed drainage trough structure is set up by dimensional analysis. Amount to calculating in the formula is consistent with testing data in-situ, which is valuable in design of high-speed drainage structure.
debris flow, two-phase liquid, high-speed drainage structure, abrasion, abrasion amount
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49浏览
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【期刊论文】RESEARCH ON EQUIVALENT PROCESSES OF ROCK MASS PARAMETERS WITH ANCHOR PILES
陈洪凯, CHEN Hong- kai, TANG Hong-mei, WANG Rong, TANG Fen, WANG Kai, YUAN Jian-yi
Applied Mathematics and Mechanics(English Edition, Vol. 22, No. 8, Aug 2001),-0001,():
-1年11月30日
Using normal and shear rigid coefficients of intact rock and fracture plane, rigidly normal, shear equivalent rigid coefficients of fissure rock mass are conducted. On the basis of hypotheses of small displacement of rock mass, principle of superposition, irrelevance of strength parameters C and φ and Coulomb theory, formulas to calculate equivalent strength parameters C and φ of equivalent continuous mass from fissured rock mass with anchor piles are given. The achievement is extremely valuable in integral stability analysis of the rock mass slope and important in promoting the research of the rock mass’s constitutive relation.
rock mass, anchor, equivalent continuous mass, rigid coefficient, strength parameter
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40浏览
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【期刊论文】GLOBAL COMPOSI TE EL EMENT I TERATION FOR ANAL YSIS OF S EEPAGE FREE SURFACE
陈洪凯, Chen Hongkai, Tang Hongmei, Xiao Shengxie
Applied Mathematics and Mechanics(English Edition, Vol. 20, No. 10, Oct 1999),-0001,():
-1年11月30日
As one of the most difficult topics in rock mass hydromechanics, seepage free surface plays an important part in slope stability researches. Based on analysis of numerical methods to solve seepage free surface, global composite element iteration ( GCEI ) is presented in this paper . FEM program is made by using GCEI. Calculation shows that not only the program is simple using GCEI, but also the tolerance is higher after 5 iterations.
rock mass slope, seepage free surface, global composite element iteration, verification
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28浏览
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48下载
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【期刊论文】ESSENTIAL PRINCIPLE OF DEBRIS FLOW DYNAMICS
陈洪凯, CHEN HONG-KAI, TANG HONG-MEI
,-0001,():
-1年11月30日
As one of dominate geological disaster and geomorphologic processes in mountains, debris flow dynamics is essential in designing of structures against debris flow disaster, risk appraisal and mitigation of the disaster. Essential principles of debris flow dynamics are composed of flow velocity, impact and abrasion of debris flow. Based on two-phase theory, both continuum and momentum equations every phase are established. Further, method to calculate velocity of two-phase debris flow is established by introducing parameters M and G0 . Impact forces and duration can be identified by impact formality on banks of debris flow valley or structures. According to abrasion forces of slurry and particles in debris flow, methods to calculate abrasion thickness and velocity are provided primitively. These principles have applied effectively in engineering since 2000.
Debris flow dynamics, Flow velocity, Impact, Abrasion
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45浏览
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【期刊论文】Research on Duration for Perilous Rock to Form
陈洪凯, CHEN HONG-KAI, TANG HONG-MEI, ZHU HUI
,-0001,():
-1年11月30日
As one geological disaster in the area of the Three Gorges Reservoir of China, perilous rocks dominate stability of slopes in the area. Most cliffs or steep slopes are alternately composed of inflexible rock such as sandstone and soft rock such as mudstone in the area, and due to different weathering velocities rock cells in soft rock below inflexible rock are usually developed. Any perilous rock belongs to a part of inflexible rock. To appraise the safety of perilous rock, it is essential to approach duration for perilous to form is of interest. In the present paper, authors analyze weathering velocity of rock cell and establish method to calculate length of critical rock cell. Duration for perilous rock to form can be divided into three parts, (1) duration to form critical rock cell, (2) damage duration of control fissure, and (3) fracture duration of control fissure. Further, methods to calculate these durations are established in details based on damage mechanics and fracture mechanics.
Rock mechanics, Perilous rock, Duration for perilous rock to form, Rock cell, Control fissure, Damage and fracture of perilous rock
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陈洪凯, CHEN Hongkai, TANG Hongmei
,-0001,():
-1年11月30日
As one of dominant geologic disasters in the area of the Three Gorges Reservoir of China, perilous rock displays some features such as much quantity, extensive distribution, bad stability and strong fatalness. The internal reasons is that the stratum composed of soft rock and inflexible rock, steep slope and obvious unloading, while both fissure pressure in control fissure of perilous rock and earthquake force are external reasons for perilous rock to develop. In present paper, the authors establish chained mechanism in views of Geomorphology, and divide the evolution of perilous rock into eight stages. Further, avalanche of perilous rock is divided into three stages, 1) the free falling stage, 2) the initial bounce stage, and 3) the later bounce stage. Methods to calculate moving routine after avalanching of perilous rock are established based on kinematics.
geological disaster, perilous rock, chained mechanism, moving routine, the area of the Three Gorges Reservoir of China
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30浏览
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陈洪凯, , 唐红梅, 刘光华, 胡明, 吴四飞
岩石工程学报第26卷第3期2004年5月/Chinese Journal of Geotechnical Engineering Vol. 26 No. 3 May. 2004,-0001,():
-1年11月30日
危岩是三峡库区典型的地质灾害类型之一,根据失稳类型本文将危岩分为坠落式危岩、滑塌式危岩和倾倒式危岩三类。其中坠落式危岩和滑塌式危岩的破坏机理主要属于危岩体沿着主控裂隙面剪切破坏,而倾倒式危岩则主要属于危岩体围绕基部倾覆点拉裂转动破坏。实践表明,具有支撑条件时,支撑是极其有效的技术类型,尤其对坠落式危岩和倾倒式危岩更为适用。作用在危岩体上的荷载主要有自重、裂隙水压力和地震力,可构成三种荷载组合,基于支撑体的容许承载力及危岩体的极限平衡理论,本文建立了坠落式危岩的支撑计算方法,建立了倾倒式危岩的支撑-锚固联合计算方法,量化了支撑体尺寸,获得了倾倒式危岩所需的锚杆(索)数量。文中所提出的危岩支撑计算方法两年来已经在三峡库区的数百个危岩体治理中得到成功应用,并被录入《重庆市(三峡库区)滑坡、塌岸、危岩防治工程设计技术规范》中.用于指导三峡库区重庆境内的危岩防治工程。
危岩, 支撑, 支撑-锚固联合, 计算疗法, 三峡库区, 应用
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