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广东深圳市东深引水工程是开发经济特区的一项重要涉外项目。工程规模较大,首先将东江水通过八级抽水站把水位抬高46米,引流至深圳水库,再经过库区内的进水渠道、闸门井、输水管、顶管后座井、电站,最后经过3公里长的方形函渠输往香港。输水工程由后座井、输水钢管、闸门井三部分组成。输水钢管全长83.5米,其中(?)3060×30×71040为穿坝顶管。局部管段采用凿方式出碴,势必造成管壁四围空隙较大,为防管壁四周渗水,危及坝体,必须采取灌浆止水措施。
Shenzhen Dongshen Water Diversion Project is an important foreign-related project for the development of special economic zones. The project is relatively large in scale. First, Dongjiang Water raises the water level by 46 meters through the Level 8 pumping station and drains to Shenzhen Reservoir. After passing through the inlet channels, gate wells, water pipes, pipe jacking wells, power stations, Finally, a 3-kilometer-long square letter was drafted to Hong Kong. Water projects from the back seat wells, water pipe, gate wells in three parts. Water pipe length of 83.5 meters, of which (?) 3060 × 30 × 71040 to wear dam pipe. Local pipe section using chisel way ballast, is bound to cause a large gap around the pipe wall, in order to prevent seepage around the pipe wall, endangering the dam, grouting water sealing measures must be taken.