The iso-thickness diagram of the bondinglayer was obtained, making it feasible to predict the thickness of the boriding layer by giving bonding temperature and time,and to determine suitable boriding temperature and time according to the target thickness of the boriding layer.

And the depth isoline graph is plotted to analyze the historical origin of this landslide, which is very important for the control of this landslide.

Besides,the predicting roles played by the isopach map of sand bodies of the roof(footwall) in coal seam for erosion zones are introduced,and the predicting methods,steps and examples are also given.

To study the equivalent thickness,and effects of superposition throttle slices to damper characteristics,the bending deformation is analyzed at the throttle mouth radius r_k,and the equivalent thickness formula deduced.

An equivalent thickness conception is proposed to consider the crack closure effects and the three-dimensional stress constraints along the crack front by use of the theory obtained for the straight through thickness crack.

Through finite element analysis on point-supported midhollow glass with various thicknesses,the value of equivalent thickness of mid-hollow glass given in Technical Specification for Point Supported Glass Curtain Wall is revised and corresponding revised coefficient is given.