陆水水库土坝白蚁防治措施与效果分析

Measures and effects of termite control for earth dam of Lushui Reservoir

白蚁是造成土石坝渗漏、管涌的重要因素之一,给土坝结构安全构成严重威胁。由于鄂南气候的特殊性,陆水水库12座土坝的白蚁危害始终难以根治,原先通过人工寻找蚁穴对白蚁进行控制的方法效果不佳。在分析陆水枢纽土坝中白蚁来源及其对大坝危害机理的基础上,通过革新灭蚁技术,如采用白蚁监测装置、新型生物药剂,使白蚁种群数量得以控制。其防治经验可供其他土坝工程管理方借鉴。

The termite, an important factor inducing piping and seepage of earth dam, threats the structural safety of earth dam seriously. Due to the climatic particularity at dam site of Lushui Reservoir in south Hubei Province, the termite problem had not been solved for a long time. The original method that finds and eliminates termite nests by manpower was proved to be inefficient. The termite source of Lushui Reservoir is analyzed and its damaging mechanism is presented. By applying new control technolo- gies such as termite monitoring devices, new biological agent, the population density of termite has been controlled effectively.