It is indicated that the intact collapsible loess has apparent fabric; bigger holes expand, then close; smaller holes gradually close during loading; most of holes gradually close and the distribution of density of scanning section becomes homogeneous in the process of collapse; and whether the bigger holes close or not is decided by the stress condition of immersion.

Common treatments of collapsed loess foundation;

The trampling construction of the collapsed loess foundation treatment;

Research into the construction technology of ramming compacted pile in collapsed loess area;

Assessment of calculating methods of collapse deformation of subsoil of collapse loess;

Simple talks about how to treat with collapse loess foundation with shocking compaction method;

Discussion on empirical formula of strengthening depth of collapse loess ground;

Assessment of loess collapsibility based on data mining;

Application in evaluation of loess collapsibility with the method of fuzzy information optimization processing;

The method of fuzzy information processing of optimization in the evaluation of loess collapsibility;

Examination and evaluation of structure and reinforcedesigning of danger building in slumping loess region;

Through the investigation and analysis on flood cause of slumping loess in Pingbei oilfield,it is pointed out that the major reason of severe flood damage are due to the characteristics of slumping loess,especial its topography,physiognomy,sparse vegetation and centralized rainstorm.

By analyzing the accident of settements for ox-hide paperboard workshop in Shandong province, the engineering practice and the effect were introduced for slumping loess foundation under the accomplished projects by pressure grout method.