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一概述在中小型水利工程中,涵洞湧水是一个带有普遍性的问题,长期以来没有找到好的处理方法,已成为水利工程上的一个难题,其原因,主要是因为这些工程质量较差,并多为砌石涵洞(无压洞),接缝多。这种群众性的工程,出现这类问题是难以避免的。本地区自1978年起,对这类工程试用灌浆方法处理,经过艰苦的工作,获得了成功。涵洞湧水的灌浆处理方法,就是水库不放干水,冒着湧水灌进迥昀?全区已处理好这类工程40多处,其中约三分之一是湧水灌浆完成的导っ?这个方法是处理涵洞湧水的一个较好的方法涮氐?一是效果较好,不管水湧大小都能止得住;二是施工技术较简单,只需要灌浆设备,不需要钻机;三是施工时间短,每处工程只需15～30天,不受季节限制;四是造价较低,用工少。一般每处工程需水泥50至100吨,需工500至2000个,由于此法不需要放空库水进行灌浆,因此对于某些不能放空库水或者放空库水会造成重大经济损失的大工程,以及某些病库、险库都是很需要的。现将涵管湧水灌浆处理方法介绍如下。
I. INTRODUCTION In small and medium-sized water conservancy projects, culvert water influx is a common problem. For a long time, no good treatment has been found and it has become a problem in water conservancy projects mainly due to the poor quality of these projects , And mostly masonry culverts (no pressure holes), seams and more. This mass project, the emergence of such issues is unavoidable. Since 1978, this area has been successfully treated with this type of engineering trial grouting method and has been hard-working. Culvert irrigation grouting method, that is, the reservoir does not put dry water, risking water inflow 迥? Yun? The region has handled more than 40 such projects, of which about one-third of the water filling grouting This method is a better way to deal with culvert water gushing? First, the effect is better, regardless of the size of the water surge can withstand; Second, the construction technology is relatively simple, only grouting equipment, not Need rig; Third, the construction time is short, each project only 15 to 30 days, not subject to seasonal restrictions; Fourth, lower cost, less labor. Generally, each project requires 50 to 100 tons of cement and a work load of 500 to 2,000. Because this method does not require emptying water for grouting, for some projects that can not cause any significant economic losses due to emptying or emptying of reservoir water, As well as some of the wards, vaults are needed. Now Culvert Grouting treatment methods are described below.