考虑地下水补给的高岭土电渗法固结试验研究

Consolidation Test Study of Kaolin Using Electro-osmosis Method in Consideration of Groundwater Supplement

为研究不同补水边界条件对电渗加固软土地基效果的影响,在自制的试验装置上对高岭土进行了不同补水边界条件的电渗固结试验,通过监测电渗过程中电流、电势、排水量、抗剪强度、含水率和沉降等指标,发现不补水条件下的电渗加固软土效果优于补水条件下的电渗加固效果;在不补水条件下软土通过电渗加固还会出现较大裂缝,表明不同的补水边界对电渗加固效果影响较大,在电渗室内试验时必须考虑补水边界条件的影响。

For study of reinforcement effect of electro osmosis with different water implement boundary, a laboratory test program of kaolin with different water implement boundary was conducted on the self made electro osmosis consolidation apparatus. Electric current, electric potential, drainage, shear strength, moisture content and settlement were monitored in the electro osmotic process. The results show that the reinforcement effect of electro osmosis without water implement is better than that with water implement, and electro osmosis consolidation without water supplement will lead to development of tension cracks in the treated soil. It shows that the impact on the reinforcement effect of electro osmosis with different water implement boundary is great. So, it is necessary to take the impact of water implement boundary in condition of experimental study of electro osmotic consolidation.