土石坝天然防渗材料应用探讨

Discussion on Application of Natural Impermeable Material of Earth-rock Dam

总结和研究当地防渗材料特性,对修建水库具有重要意义。残坡积红色粘土作为大、中型水库土石坝的天然防渗材料已使用相当普遍。风化岩作为天然防渗材料前景广阔,具有现实的工程意义。与粘土料比较,使用粘土与风化岩混合料可以明显降低土料中的粘粒含量,从而提高一系列的防渗土料质量指标。与风化料比较,使用粘土与风化岩混合料可以明显提高土料的抗渗性能和施工便利性。可以说使用混合料作为水库天然防渗材料是一种趋势。

Summary and study of the local impermeable material properties are of great significance for the construction of reservoirs. Eluvial-colluvial red clay as a natural impermeable material for large and medium-sized reservoir earth dam has been quite common. Weathered rock as a natural impermeable material has broad prospect and the reality of engineering significance. Comparison with the clay material, the use of a mixture of clay and weathered rock can significantly reduce soil clay content of the compound, thereby increasing the range of quality indicators of impervious soil material. The use of a mixture of clay and weathered rock can significantly improve the impermeability of the soil materials and construction convenience.