引江济汉工程干渠地基降水设计

引江济汉工程干渠地基涌水涌沙问题是施工的关键技术问题之一。为保证工程施工期的安全,根据其地层特点选择了合适的降排水方案。本文主要介绍干渠及交叉建筑物施工期深井降水与盲沟排水处理方案。该方案已成功地在15.124 km长的干渠及15座交叉建筑物等工程施工中应用,可供同类工程借鉴。

Foundation dewatering design for main channel of Project of Water Diversion from Yangtze River to Hanjiang River

Sand and water gushing from the foundation of the main channel is one of the key problems during the construction of the Project of Water Diversion from Yangtze River to Hanjiang River. In order to ensure the safety of the construction，a suitable dewatering and drainage scheme is selected in accordance with the features of the strata therein. The treatment scheme of deep-well dewatering and blind ditch drainage for the construction of both the main channel and the crossing structures is mainly described herein. The scheme is successfully applied to the constructions of the inverted siphon of 15.124 km main channel，and 15 river-graff-cross buidings，which can provide a reference for the similar project oncerned.