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湖南省永州市对全市上型号的土坝和土石混合坝的白蚁进行了普查,共查水库486座,有白蚁危害的254座,其中中型水库12座,小(一)型水库95座,小(二)型水库147座。 土栖白蚁对大坝的危害 白蚁的种类很多,栖居在堤坝上的白蚁多为土栖白蚁,它对堤坝危害很大。土栖白蚁中,又以黑翅土白蚁危害最为严重。如新田县塘下水库,有一窝黑翅土栖白蚁,主巢位于大坝中部正常水位以上0.19米处,巢径1.3米,巢位深3.5米,主巢道呈半圆形,内径40厘米,坝内有一条主蚁道由主巢伸向内坡水位以
Yongzhou City, Hunan Province, carried out a survey of termites of the earth-rock dam and earth-rock mixing dam in the city with a total of 486 reservoirs and 254 termite hazards, including 12 medium-sized reservoirs and 95 small reservoirs (B) type reservoirs 147. Terrestrial termite damage to the dam There are many types of termites, termites dwelling dams are mostly terrestrial termites, it is a great harm to the dam. Soil termites termites, black termites and the most serious damage. Such as Xintian Tangxia reservoir, a nest of black winged termites, the main nest is located in the middle of the dam above the normal water level of 0.19 meters, nesting 1.3 meters, 3.5 meters deep nest, the main nest was semicircular, diameter 40 Cm, there is a main dam in the dam from the main nest to the inner slope of the water level