Orthogonal tests on permeability of soil-rock-mixture
Orthogonal tests on permeability of soil-rock-mixture
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发表时间：
2006
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通讯作者：
Long Wan-xue
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作者：
Long Wan-xue
土石混合体作为土石耦合体，具有固有的不均匀性、不连续性等独特性质，采集样品研究其性质非常困难。土石混合体是典型的多孔介质，其渗流与颗粒尺寸、空隙率、颗粒形状密切相关。在实验室正交试验的基础上，采用自制的恒水头渗透仪，研究了土石混合体的渗流效果。 研究了砾石含量、空隙率和颗粒形状对土石混合体渗透系数的影响，通过正交试验，分析了三个因素对土石混合体渗透系数的影响，确定了不同因素的显着性，提出了土石混合体渗透系数的计算公式，并通过试验结果进行了验证，从而形成了一种简洁实用的计算公式。 提供了土石混合物渗透系数的理论计算工具。
As a coupling body of soils and rocks,soil-rock-mixture has the inherent unique properties of inhomogeneity,discontinuity and it is very difficult to gather samples to study its properties.Soil-rock-mixture is a typical porous medium,and its seepage is closely related to the particle-size,void ratio and particle shape.Based on the lab orthogonal tests,using self-manufactured constant head permeameter,the effect of gravel content,void ratio and particle shape on the coefficient of permeability of soil-rock-mixture was studied.By orthogonal tests,the influence of three factors on the coefficient of permeability of soil-rock-mixture,the significance of different factors was determined.A formula for calculating the coefficient of permeability of soil-rock-mixture was proposed and was verified by the experimental results,thus a concise and useful computational tool for the theoretical calculation of coefficient permeability of soil-rock-mixture was offered.