改性环氧灌浆材料在梅州抽水蓄能电站高压水道的工程应用

郭凯; 孙正; 郑晶星; 英鹏涛; 黄鹤程; 邵晓妹

doi:10.11988/ckyyb.20260635

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长江科学院院报 ›› 0 DOI: 10.11988/ckyyb.20260635

改性环氧灌浆材料在梅州抽水蓄能电站高压水道的工程应用

郭凯 ¹ ,
孙正 ² ,
郑晶星 ¹ ,
英鹏涛 ¹ ,
黄鹤程 ¹ ,
邵晓妹 ³

作者信息 +

Engineering application of Modified Epoxy Resin Grouting in the High-Pressure Waterway at Meizhou Pumped Storage Power Station

Author information +

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摘要

梅州抽水蓄能电站高压水道最大静水头500 m，采用钢筋混凝土衬砌设计，局部发育闪长岩脉及断层破碎带等不良地质体，常规水泥灌浆难以满足防渗要求。针对环氧树脂灌浆材料超过35℃易暴聚、低黏度与高强度矛盾、胶凝时间与灌浆阶段不匹配等技术瓶颈，分别通过固化剂改性、环氧主剂改性及配合比优化加以解决，研发出水工高压隧洞专用改性环氧灌浆材料。通过现场生产性试验，确定了引水中平洞岩脉段、引水下平洞断层段及尾水支洞断层段的差异化灌浆参数。灌后检查孔透水率均小于1.0 Lu，声波波速提升率4.2%~7.6%。在梅州抽水蓄能电站二期高压水道复合灌浆后一次充水成功，运行期间围岩稳定、监测无异常。该技术可为同类高水头抽蓄电站不良地质体化学灌浆处理提供参考。

Abstract

The Meizhou pumped storage power station featured a high-pressure water conveyance system with a maximum static head of 500 m, designed with reinforced concrete lining. The site contained unfavorable geological conditions such as diorite veins and fault fracture zones in localized areas, making conventional cement grouting insufficient to meet impermeability requirements. To overcome technical challenges associated with epoxy grouting materials, such as premature polymerization above 35°C, the conflict between low viscosity and high strength, and mismatched setting time with grouting stages, these issues were addressed through modifier optimization of curing agents, modification of the epoxy base resin, and mix proportion refinement. As a result, a specially modified epoxy grouting material tailored for high-head hydropower tunnels was developed. Through on-site production trials, differentiated grouting parameters were established for rock vein sections in the upper horizontal intake tunnel, fault zones in the lower horizontal intake tunnel, and fault zones in the tailrace branch tunnel. Post-grouting inspection showed permeability rates below 1.0 Lu across all test boreholes, with an increase in ultrasonic wave velocity ranging from 4.2%~7.6%. The second-phase high-pressure waterway of the Meizhou Pumped Storage Power Station successfully filled with water after composite grouting, and the surrounding rock remained stable during operation with no abnormalities detected in monitoring. This technology provides valuable reference for chemical grouting treatments of adverse geological formations in similar high-head pumped storage projects.

导出引用

郭凯, 孙正, 郑晶星, 等. 改性环氧灌浆材料在梅州抽水蓄能电站高压水道的工程应用[J]. 长江科学院院报. 0 https://doi.org/10.11988/ckyyb.20260635

GUO Kai, SUN Zheng, ZHENG Jing-xing, et al. Engineering application of Modified Epoxy Resin Grouting in the High-Pressure Waterway at Meizhou Pumped Storage Power Station[J]. Journal of Changjiang River Scientific Research Institute. 0 https://doi.org/10.11988/ckyyb.20260635

中图分类号： TV441.3

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