炭质页岩隧道弃渣的浸水特性试验研究

Study of Characteristics of Wetting Carbonaceous Shale Tunnel Spoil

为了充分利用炭质页岩隧道弃渣作为路基填料,需要了解炭质页岩的物理力学性质,以及受浸水影响下炭质页岩的性质变化.通过对炭质页岩的组成成分和物理性质,在浸水条件下的抗压强度、抗剪强度和耐崩解特性试验进行分析.结果表明:炭质页岩由于高岭石和蒙脱石含量高,在遏水条件下软化膨胀,其抗压强度和抗剪强度在浸水时明显减小,耐崩解性较差,其强度和耐久性下降明显,不适于直接作为路基填料使用.

To take full advantage of carbonaceous shale tunnel spoil as a roadbed filler it needs to understand the physical and mechanical properties of carbonaceous shale and the changing nature of the flooded affected by carbonaceous shale. By analyzing carbonaceous shale composition, physical properties and compressive strength, the shear strength and resistance to disintegration under flooding conditions characteristic. The results showed that carbon shale swelled and softened when encountering water, the compressive strength and shear strength significantly decreased when flooding, the disintegration had poor resistance and significantly decreased its strength and durability, which are not suitable for direct use as roadbed filler.