水土平衡法及措施在过中间风井中的应用

The Application of Soil and Water Balance Method and Measures in Intermediate Air Shaftportal in the Shield

结合太原地铁2号线207标施工实例,介绍了水土平衡法在长风街站中间风井中的应用。结合本工程主体结构、水文地质状况及周围构建筑物状况,采取相应的安全保障措施。该方法应用后降低了盾构机过中间风井的涌水涌砂风险,提高了盾构过中间风井的效率,施工成本也得到有效地节约。

Combining with the 207 section of Taiyuan line 2 construction project, the application of soil and water balance method in the middle wind well of Changfeng street station is introduced in this paper. According to the main structure, hydrogeology and surrounding buildings of the project, the corresponding security measures should be taken. The application of this method reduces the risk of sand and water surge in process of shield crossing the middle wind well, improves the efficiency of shield crossing the middle wind well and saves the construction cost.