摘要
为研究喀喇昆仑公路(中国段)区域周边的边坡危岩的力学性能,利用光学数字图像相关法和应变电测法结合万能试验机对采于喀什地区的褐红砂岩、褐灰砂岩、片麻岩和灰绿板岩试件分别进行三点弯曲受力和单轴压缩受力状态下的实验研究。获得所研究岩样随时间的应变变化曲线、应力-应变曲线以及单轴压缩时随着载荷增加的位移量。从褐红砂岩与片麻岩试件的三点弯曲实验得出褐红砂岩强度大于片麻岩强度,从灰绿板岩试样与片麻岩试样单轴压缩实验中得出灰绿板岩强度大于片麻岩强度,同时观测部分岩样裂纹发展及断口形貌。通过一系列实验研究和分析,丰富这一地域岩石力学性能的研究内容,可为边坡危岩附近公路的岩土工程施工及防灾减灾提供参考依据。
In order to study the mechanical properties of slope dangerous rock around the Karakoram Highway(China Section),three-point bending and uniaxial compression tests of maroon sandstone,maroon limestone,gneiss and grayish green slate samples collected from Kashi area were carried out by using optical digital image correlation method and strain electrical measurement method combined with universal testing machine.The strain curve,the stress-strain curve and the displacement with the increase of load are obtained.From the three-point bending test of maroon sandstone and gneiss specimens,it is concluded that the strength of maroon sandstone is greater than that of gneiss.From the uniaxial compression test of greyish green slate and gneiss specimens,it is concluded that the strength of greyish green slate is greater than that of gneiss.Through a series of experimental research and analysis,the research content of rock mechanical properties in this area is enriched,which provides a reference for geotechnical engineering construction and disaster prevention and reduction of highway near dangerous rock slope.
作者
米红林
纳曼·麦麦提
色麦尔江·麦麦提玉苏普
杨晓东
MI Honglin;NAMAN·Muhammat;SEMERJAN·Memetyusup;YANG Xiaodong(School of Civil Engineering,Kashi University,Kashi 844008,China;School of Mechanical Engineering,Shanghai Institute of Technology,Shanghai 201418,China)
出处
《中国测试》
CAS
北大核心
2021年第6期38-44,共7页
China Measurement & Test
基金
新疆维吾尔自治区自然科学基金面上项目(2019D01A02)
新疆维吾尔自治区天山优秀青年计划资助项目(2018Q029)。
关键词
测试技术
数字图像相关法
应变电测法
危岩
testing technology
digital image correlation method
strain electrical measuring method
dangerous rock
