| 广西北部湾人造陆域吹填土电冲击特性研究 |
| |
| 引用本文： | 欧孝夺,潘鑫,侯凯文,江杰,柳子炎.广西北部湾人造陆域吹填土电冲击特性研究[J].岩土力学,2018,39(Z1):348-354. |
| |
| 作者姓名： | 欧孝夺 潘鑫 侯凯文 江杰 柳子炎 |
| |
| 作者单位： | 1. 广西大学 土木建筑工程学院，广西 南宁 530004；2. 广西大学 工程防灾与结构安全教育部重点实验室，广西 南宁 530004； 3. 广西金属尾矿安全防控工程技术研究中心，广西 南宁 530004；4. 广东省基础工程集团有限公司，广东 广州 510620 |
| |
| 基金项目： | 国家自然科学基金（No.41372361，No. 51768006，No.51568006）；广西科技计划项目（桂科AB17195035）。 |
| |
| 摘 要： | 吹填土陆域的固有特性是造成其频受雷击的重要因素之一。针对广西北部湾吹填土的电冲击特性，结合理论分析、室内试验和数值模拟的方法对其展开研究，探究其与外电场的响应规律。首先从Archie电阻率模型理论出发，结合土体的介电常数公式，提出了吹填土的电冲击模型，认为影响其与外电场之间的响应规律的主要因素是干密度、含水率和含盐量。电冲击试验表明，吹填土击穿场强随含水率对数和干密度对数的升高呈线性降低，随含盐量的升高呈指数降低。再结合数值模拟结果发现，含水率、干密度和含盐量越高，吹填土内部场强越大，受冲击电场作用越显著，对外电场的响应越强烈，其中又以含水率和含盐量的影响为主。
|
| 关 键 词： | 吹填土 填海造地 冲击特性 电冲击试验 数值模拟 |
| 收稿时间： | 2017-07-30 |
Electrical shock characteristics of hydraulic fill in reclamation land in Beibu Gulf of Guangxi |
| |
| OU Xiao-duo,PAN Xin,HOU Kai-wen,JIANG Jie,LIU Zi-yan.Electrical shock characteristics of hydraulic fill in reclamation land in Beibu Gulf of Guangxi[J].Rock and Soil Mechanics,2018,39(Z1):348-354. |
| |
| Authors: | OU Xiao-duo PAN Xin HOU Kai-wen JIANG Jie LIU Zi-yan |
| |
| Institution: | 1. College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi 530004, China; 2. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning, Guangxi 530004, China; 3. Guangxi Metal Tailings Safety Prevention and Control Engineering Technology Research Center, Nanning, Guangxi 530004, China; 4. Guangdong Foundation Engineering Group Co., Ltd., Guangzhou, Guangdong 510620, China |
| |
| Abstract: | The natural characteristics of hydraulic fill for land is one of the important factors that cause its frequency to be struck by lightning. Based on the theoretical analysis, laboratory test and numerical simulation, the electric shock characteristics of hydraulic fill in Guangxi Beibu Gulf are studied; and then its response rule to the external electric field is explored. Based on the theory of Archie resistivity model and the formula of dielectric constant of soil, the electric shock model of hydraulic fill is proposed; and the main factors affecting the response law between soil and electric field are dry density, water content and salt content. Then the electrical shock test shows that breakdown strength of hydraulic fill has a logarithmic relationship decreasing with the water content and dry density, and the exponential relationship decreasing with salt content. On this basis, combined with the numerical simulation results, it is found that the higher the water content, dry density and salt content, the greater the electric field inside the dredger fill, the more remarkable of the impact field on the dredger fill, and the stronger the response to the external electric field. Among them, the influence of water content and salt content is the main. |
| |
| Keywords: | hydraulic fill reclamation shock characteristics electrical shock test numerical simulation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
