摘要
为研究吕梁地区马兰黄土孔隙表面结构复杂程度及其影响因素,通过压汞试验及热力学孔隙分形模型计算黄土孔隙表面分形维数,以此值大小定量表征吕梁地区马兰黄土孔隙的表面结构复杂度。结果表明:孔隙率和退汞效率与表面分形维数有弱相关性,孔隙率越大,表面分形维数越大,退汞效率越小,表面分形维数越大;微小孔隙(孔径小于1μm)体积含量、表面积与表面分形维数有线性相关性,微小孔隙体积含量越高、表面积越大,则表面分形维数越大;中值孔径与表面分形维数具有线性相关性,中值孔径越小,表面分形维数越大。可见微小孔隙含量会增加整体孔隙表面的复杂程度。
In order to study the complexity of pore surface structure of Malan Loess in Lüliang area and its influencing factors,the fractal dimension of pore surface of loess was calculated by mercury injection test and thermodynamic fractal model,and the surface structure complexity of pore in Malan Loess in Lüliang area was quantitatively characterized by this value.The results show that the porosity and mercury removal efficiency are weakly related to the surface fractal dimension,and the larger the porosity is The larger the surface fractal dimension is,the smaller the mercury removal efficiency is,the larger the surface fractal dimension is;there is a linear correlation between the content of micro pores(pore diameter less than 1μm),the surface area and the surface fractal dimension.The higher the pore volume content and the surface area are,the larger the surface fractal dimension is;the linear correlation between the median pore diameter and the surface fractal dimension is,the smaller the value is,the larger the surface fractal dimension is.It can be seen that the micro pore content will increase the complexity of the whole pore surface.
作者
鲁拓
唐亚明
冯卫
宿晓虹
LU Tuo;TANG Ya-ming;FENG Wei;SU Xiao-hong(School of Geological Engineering and Geomatics,Chang’an University,Xi’an 710054,China;Xi’an Geological Survey Center,China Geological Survey Bureau,Xi’an 710054,China)
出处
《科技和产业》
2021年第1期185-189,共5页
Science Technology and Industry
基金
中国地质调查局项目(DD20190642)
国家自然科学基金项目(41572264
41877225)。
关键词
压汞试验
热力学分形模型
微小孔隙
孔隙表面分形维数
mercury injection test
thermodynamic fractal model
micro pore
fractal dimension of pore surface
