The engineering techniques mending shaft lining ruptures in coal mine area covered by thick overburden soils in Eastern China are introduced, and two grouting techniques (grouting from the surface and grouting through the shaftlining) are chiefly discussed on their technics flows and their advantages disadvantages.

The influence of composite water-reducing admixture on shale pottery thermal insulation surface mortar's properties;

Shale pottery thermal insulation surface mortar has good heat preservation and heat insulation performances.

The macroscopical effect of grouting in weak planes of slope rockmass;