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一九七五年六月份开始,我们在湛江市新坡水库用预制混凝土管代替钢管,进行安装土坝测压管的试验研究,经过一年来的观测,基本符合要求,现将情况简介如下。 新坡水库总库容六百万立方米,系均质土坝,最大坝高14.7米,共布置了三排九根测压管,埋设深度,最深为9.6米,最浅为3米。 测压管安装系采用大锅锥打孔,达到计划深度后将锅头除去,在锥杆底部套上反牙底盘,将混凝土管送下。预制管内径8厘米,外径15厘米,150号标号。每节采取平口对接,接口用1:2水泥砂浆胶合,接缝用塑料薄膜包裹,以三根竹片夹紧,并用14
Beginning in June, 1975, we replaced the steel pipe with a prefabricated concrete pipe in Zhajiang Xinpo Reservoir to carry out the pilot study on earth pressure pipe installation. After a year of observation, we basically met the requirements. The briefing is as follows. The total storage capacity of Xinpo Reservoir is 6 million cubic meters. It is a homogeneous earth dam with a maximum height of 14.7 meters. A total of nine piezometric tubes are arranged in three rows. Depth is the deepest 9.6 meters and shallowest 3 meters. Pressure pipe installation system using large cone tapping hole to reach the planned depth of the pot head to remove the tapered rod at the bottom of the set anti-tooth chassis, the concrete pipe down. Prefabricated tube diameter of 8 cm, diameter 15 cm, 150 number label. Each section to take the flat docking, the interface with 1: 2 cement mortar, seams wrapped with plastic film, with three bamboo clamping, and 14