Combining with the test of viscoelasticity of waterstop material, the influence of the waterstop effect of the viscoelasticity of waterstop material is analyzed when the flood peak is high.

The effect of humidity of the clay balls to the water stop result;

The article introduces the application of the high-pressure spiral-spayed pile as the water stop curtain and the soil reinforcement in the pit enclosure.

The design of its water stop not only should consider the requirements of high-head gate but also take the influence of silt into account.

Besides, soil discharging and water stopping are also difficult questions faced.

Research for support pillow spacer and middle watertight structure of miter gate;

Taking the application of eccentric-hinge radial gate to Xiaolangdi Hydropower Plant as an example,we introduce the principles and actual application of watertight of such radial gate,and analyze the causes of the existing problems in the practice,then put forward a new plan of technical transformation,which can provide some reference for further optimizing the top watertight way .

Combined with specific engineering, it analyzes the reason of mistakes in engineering from type of foundation pit support and quality of deep bored pile, and discusses the problem that settle water seal while foundation pit construction in special environment to ensure safety of engineering.

By making analysis and comparison on the different schemes for the expansion joint and joint seal of underground box culvert for drainage in coastal area, the cause of leakage from expansion joint and joint was found out, and the factors to be considered and requirement for construction were proposed for ensuring the effectiveness of water seal.

Construction of slab joint seal for concrete slab rockfill dam;

Sealing Experimental Study of TypeⅢ with Expansion Modality on High Pressure Gate;