胶凝砂砾石筑坝技术在龙溪口枢纽超长库区防护中的应用

胶凝砂砾石作为一种高水胶比、低胶凝材料用量的经济环保型筑坝材料，其填筑施工工艺与混凝土碾压施工近似，同时具有单次摊铺厚度更厚、施工效率更高的特点。以龙溪口航电枢纽工程五一坝防护库区为例，对胶凝砂砾石筑坝技术在超长库区防护的应用进行研究，通过分析其力学特性以及渗透性，进一步阐明胶凝砂砾石筑坝技术在水库库区安全防护中的应用科学性。结果表明，胶凝砂砾石筑坝技术在承受库区水压等外部力的作用下表现出优异的稳定性和抗压能力，其结构紧密、材料均匀，有助于减少水分渗透，从而保护库区内部的稳定性和安全性。

Application of cementitious sand and gravel dam construction technology in protection of super-long reservoir area of Longxikou Junction

As an economical and environmentally friendly dam construction material with high water-binder ratio and low cementitious material consumption,cementitious sand and gravel fill construction process is similar to that of concrete rolling construction.It has the characteristics of thicker single paving thickness and higher construction efficiency.This paper takes Wuyi Dam protection area of Longxikou Navigation-power Junction project as an example,studies the application of cementitious sand and gravel dam construction technology in the protection of super-long reservoir area,and analyzes two aspects of its mechanical properties and permeability to further expound the scientific application of cementitious sand and gravel dam construction technology in the safety protection of reservoir area.The results show that the cementitious sand and gravel dam construction technology has excellent stability and compressive resistance under the action of external forces such as water pressure in the reservoir area,and its tight structure and uniform material help to reduce the water penetration,thereby protecting the stability and safety of the reservoir interior.