章丘市复杂采空区场地的灾害治理方案研究

拟建场区下存在大范围的采空区，通过注浆法对其进行加固处理。针对采空区内往往充填大量的水，且存在多层采空区的情况，采取先稀后稠的注浆方式、变直径的注浆孔设置以及先外后内、外密内疏的注浆工序方法保证注浆的效果。

Study on Disaster Management Plan in Complex Mined-our Areas in Zhangqiu City

There are a large range of mined-our areas in under planning construction field. They have been reinforcement by using grouting method. Althoug a lot of water has been filled in mined areas, multi-layers mined-out areas still occurred. By using grouting method as first thin and thick after, changing diameter settings of the grouting holes, first grouting outside and then grouting insdie, and dense outside and sparse inside, grouting effect can be improved.