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郑家河是一座大型水库,有效库容1.13亿立方米。西干渠负担着应城县7万亩农田的灌溉任务。1984年在双季晚稻打苞抽穗、放水灌溉期间,合阜大渡槽(全长859米,设计流量10立方米秒)出口200米处,在6米高度的填方渠道断面上,出现了30米的纵向滑坡。主要原因是填筑的土壤结构松软,放水水位高,时间长,渗水严重,土壤结构被破坏,导致外坡下挫1.2米,推动坡脚土层一起向下滑动。当时由于农作物急需用水,不能关闸修渠延误时间。
Zheng River is a large reservoir with an effective storage capacity of 113 million cubic meters. Western trunk canal Yingcheng County 70000 acres of farmland irrigation tasks. In 1984, during the season of double-season late rice budding and irrigation, during the flood discharge irrigation period, a large-scale aqueduct channel section of Hefu Dayu Channel (859 meters in total length and 10 cubic meters of designed flow rate) Longitudinal landslide of rice. The main reason for this is that the soil structure of the reclaimed land is soft, the discharge water level is high, a long time, and the water seepage is serious. The soil structure is destroyed, causing the outer slope to drop 1.2 meters and pushing the soil of the slope foot to slide downward together. At that time, due to the urgent need for water for crops, it was not possible to close the gate and repair the canal for a delay.