作者机构：
[何忠明] Key Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha;410114, China;[Qiu, Junjun; 柯唯; 范电华] School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha;[何忠明] 410114, China <&wdkj&> School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha;[何忠明; Qiu, Junjun; 柯唯; 范电华] 410114, China
作者机构：
[何忠明; 黄超; 刘雅欣; 范电华; 杨煜] School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha;410114, China;Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha;[何忠明] 410114, China <&wdkj&> Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha;[何忠明; 黄超; 刘雅欣; 范电华; 杨煜] 410114, China
作者机构：
[周怡; 彭振斌] School of Geosciences and Info-Physics, Central South University, Changsha;410083, China;[尹泉] School of Civil Engineering, Hunan City University, Yiyang;413000, China;[何忠明] School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha
通讯机构：
School of Geosciences and Info-Physics, Central South University, Changsha, China
摘要：
In order to study the creep characteristics of the coarse-grained soil as embankment filler under long-term vehicle loading, the creep test was performed on coarse-grained soil using the large scale dynamic and static triaxial instruments, and the creep process of the coarse-grained soil sample was simulated by PFC3D software, and the internal particle motion and energy change during the deformation process were studied. The research results show that the coarse-grained soil embankment filler has non-linear creep characteristics. At a low stress level, the coarse-grained soil is in the stage of elastic deformation. At a high stress level, the final creep deformation curve of the coarse-grained soil does not converge. The creep process is a process in which the particles are distorted and rotated, changing from an unstable state to a stable state. During this process, the particle energy is dissipated to the minimum, and the creep of the sample reaches a stable state. This understanding of particle motion and energy changes during the triaxial creep test of coarse-grained soil will help deepen the understanding of creep characteristics of coarse-grained soil and provide a reference for engineering practice.
摘要：
It is essential for multifunctional asphalt to develop the new nanostructures with high photocatalytic activity in order to endow asphalt with the self-cleaning ability of contamination. Multi-walled carbon nanotubes/ZnO (MWNTs/ZnO) composites were synthesized based on microwave irradiation and their structure and photocatalytic properties were investigated. The experimental results showed that MWNTs/ZnO powder with different morphologies was attained such as cone-shaped, floral-patterned and fusiform structures. The as-obtained MWNTs/ZnO composites were proved to possess quite high catalytic activities for degradation of methyl orange (MO). Especially, the floral-patterned MWNTs/ZnO composites displayed better photocatalytic performance than the other composites indicating that the resultant MVVNTs/ZnO composites can be used as photocatalysts without any additional treatment.
摘要：
<jats:p>Mining disturbance will induce further weakening of faults and rock bridges, improve rock mass permeability and, in serious cases, conduct surface rivers to cause disasters. A numerical calculation model of river-fault in the mining area is established. Based on the fluid-solid coupling theory of rock mass, the influence of mining disturbance on the development and evolution process of rock bridge rupture and river-fault-stope potential seepage channel is simulated and calculated. Research studies show that under the disturbance of ore body mining, it is possible to form a channel from the river to fault to seepage and drainage in the stope. The disturbance of ore body mining has no great adverse effect on the stability of the rock mass at the top of F2 fault. The rock mass damage caused by mining is only distributed in local areas, and the rock bridge between the river, fault, and stope is not completely connected. The fracture of mining rock mass leads to the increase in permeability of rock mass, and seepage tends to spread in the direction of the fault, but there is no obvious through drainage channel from surface water to the stope. The results of research provide technical guidance for the mine to use the filling mining method after the river does not change the road safety and reliability certification and can also provide reference for similar mines.</jats:p>
作者机构：
[何忠明] State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha;410014, China;[刘雅欣] School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha;[Zeng, Xinfa] College of Civil Engineering, Hunan City University, Yiyang;413000, China
通讯机构：
College of Civil Engineering, Hunan City University, Yiyang, China
作者机构：
[常锦; 杨和平; 肖杰; 毛瑞] School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha;410114, China;Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha;[童超] China Railway Research Institute Co. Ltd., Chengdu;611731, China
通讯机构：
School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha, China
