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1 灌区工程概况陆浑灌区属丘陵山区,填方工程较多,一期工程建成的总干、东一干、东二干渠三条干渠总长203.4km,填方坝工程有252座,长9.72km,占干渠总长的9.7%。坝高10～20m,最高达33m。填方坝多为群众性施工,由于片面追求进度,填土干容重、含水量等均元原始测试数据,1982年对灌区填方坝的干容重进行了测试,其结果是达到设计要求(1.6t/m~3以上)的仅占7%,所有填方坝均有不同程度的下沉和纵横裂缝。在运行的10多年中,尽管过水量不足设计流量的1/3～1/2,填方坝的事故率较高,损失严重,尽管许多填方坝已进行混凝土衬砌,但由于填土沉陷未稳,造成局部混凝土板裂缝、伸缩缝拉开等现象,引起坝体渗漏水,因此对填方坝进行劈裂灌浆加固是必要
1 Irrigation District Project Overview Luhun Irrigation District is a hilly mountainous area, with more filling works. The first trunk trunk, the first trunk trunk and the second trunk trunk culvert have 203.4km total length, 252 filling dam works with a length of 9.72km, accounting for 9.7% of total canal chief. Dam height 10 ~ 20m, up to 33m. Most of the filling dams were mass construction. Due to the unilateral pursuit of progress, the original test data of average filling dry weight and water content, etc., the dry bulk density of dams in irrigation dams was tested in 1982 and the result was that the design requirements (1.6 t / m ~ 3 or more) accounted for only 7% of all fill dams have varying degrees of sinking and vertical and horizontal cracks. In more than 10 years of operation, although the amount of underflow is less than 1/3 ~ 1/2 of the design flow rate, the accident rate of the filling dam is high and the loss is serious. Although many filling dams have been subjected to concrete lining, Stable, resulting in local concrete slab cracks, expansion joints opened and so on, causing the dam body seepage water, so filling the dams reinforcement filling is necessary