Research And Application On Freezen Construction Technology Of Large Diameter Shaft With Thick Alluvium

New built mines which are throuhg the surface soil thickness and freezing deep and well bore diameter when the resources keep the exploitation. There are servral reasons have been applied which are freezing technique, ground pressure, water pressure, complex soil, reduced development speed may be identified and there would lead some disadvantages. The design of size of soil would be implemented with lack of theory and experience. There is no mature experience could be study. Deep freezen takes problems with frozen wall, and it faces deformation of the end of the drum. This also brings to wall crushed, water leakage and other problems.For thick alluvium, low water diameter shifts the use of modern science and techonology with above issues. The formation of thick alluvium freezed water technology uses to guide construction to ensure shaft construction security. This will change to the subject of major tecnology of freezing.This research just forcuses on the condition of Ma Jialiang mine. The shaft crosses over the topsoil which is thick. And this includes a year of clay and heavy clay. This deformation is high swelling. The soil and varation in moisture is constructing, and they are more important wellbore and freezed tube repture. Moreover, this leads to crushed wall, leaking and so on. The research and study program is about large diameter shaft and freezed wall, this causes a theory about sepcific investigation. Freezing technology is based on theoretical analysis, field application and dynamic monitoring in deep alluvium. And this design is optimizing the freez wall techonogy for the whole system. Afterwards, the competed set of deep alluvium is about low water which has been frozend for the construction, and the whole process of the implementation is all around the core technology.