湖北河堤上挖出"白蚁王宫" 蚁王蚁后被生擒
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楚天都市报6月18日讯
时值长江大汛期,荆州市公安县昨日通报一起对孟溪大垸河堤的处置险情:大堤高程40米处挖出一窝白蚁,蚁道已贯穿河堤,防汛人员剿灭蚁巢后对蚁道开挖处紧急浇筑混凝土并回填土方。
蚁巢位于孟家溪镇严家台一段河堤上。公安县荆南堤防总段王段长称,该处的白蚁踪迹,早在上月底堤防排查时已发觉。
本月8日,防汛人员按标记处先在内堤脚进行人工翻挖,挖出一条长60米、宽0.5米、深0.5米的沟渠,再沿找到的蚁道追溯竟到达堤肩,此时蚁道离堤顶高约4米,该处堤顶高程约为44.4米。
“蚁道四通八达,汛期水位一高就会出现管涌甚至溃堤。”现场技术人员分析,该处白蚁险情已经穿堤,必须紧急处理。
在加派挖掘机参与下,抢险人员在堤外沿堤面道路对应蚁道处又挖出一条长20米、宽1米的深沟,再在蚁道对应点往下挖一个宽3.5米、深4米的大洞,再次找到蚁道追挖,最后在堤顶高程40.4米处找到蚁巢。
小心挖开这个“白蚁王宫”,藏匿其中的一对蚁王和蚁后被生擒。令人惊惧的是,肥硕的蚁后已有一指之长,约6厘米。经测量,该蚁巢覆盖范围约6平方米。
施工人员随即采取混凝土浇筑、回填土方对大堤开挖处紧急加固,短短4小时内开挖回填土方约600立方、浇筑混凝土45立方。
据介绍,孟溪大垸是长江荆江段一处重要民垸,公安县荆南堤防抓住季节时令已巡查白蚁隐患13处,目前已整治险情11处,另2处白蚁险情正在处置中。
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