Kong Hailing, Wang Luzhen, Zhang Hualei
College of Civil Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, People's Republic of China.
Institute of Coastal Ultra-Soft Soil, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, People's Republic of China.
R Soc Open Sci. 2020 Jan 8;7(1):190590. doi: 10.1098/rsos.190590. eCollection 2020 Jan.
As a common solid waste in geotechnical engineering, rock granular material should be properly treated and recycled. Rock granular material often coexists with water when it is used as the filling material in geotechnical engineering. Water flowing in rock granular materials is a complex progress with the mechanical-hydrological-chemical (MHC) coupling effect, i.e. the water scours in the gaps and spaces in the rock granular material structure, produces chemical reactions with rock grains, rock grains squeeze each other under the water pressure and compression leading to re-breakage and producing secondary rock grains, and the fine rock grains are migrated with water and rushed out. In this process, rock grain size distribution (GSD) changes, it affects the physical and mechanical characteristics of the rock granular materials, and even influences the seepage stability of the rock granular materials. To study the variation of GSD in the rock granular material considering the MHC coupling effect after the seepage process, seepage experiments of rock grain samples are carried out and analysed in this paper. The result is expected to have a positive impact on further studies of the properties of the rock granular material.
作为岩土工程中一种常见的固体废弃物，岩石颗粒材料应得到妥善处理和回收利用。在岩土工程中用作填充材料时，岩石颗粒材料常与水共存。水在岩石颗粒材料中流动是一个具有机械 - 水文 - 化学（MHC）耦合效应的复杂过程，即水在岩石颗粒材料结构的孔隙和空隙中冲刷，与岩石颗粒发生化学反应，岩石颗粒在水压和压缩作用下相互挤压导致重新破碎并产生次生岩石颗粒，细岩石颗粒随水迁移并被冲走。在此过程中，岩石颗粒大小分布（GSD）发生变化，这会影响岩石颗粒材料的物理力学特性，甚至影响岩石颗粒材料的渗流稳定性。为了研究渗流过程后考虑MHC耦合效应的岩石颗粒材料中GSD的变化情况，本文开展并分析了岩石颗粒样本的渗流实验。预期该结果将对进一步研究岩石颗粒材料的性质产生积极影响。
