Aseptic technique research of the steel liner tube in the outlet;

Considering the actuality of underground structure group engineering,the model of cost control system of underground structure group engineering is deeply researched and how to develop a cost control system is discussed.

Effect of reservoir project in flood control system in China;

Constructional measurement is a critical part in the quality management and control of reservoir project.

Research on necessity and direction of the reform on management system of reservoir engineering will be of far reaching importance for implementing "Opinion on Implementation of Reform on Management System of Water Conservancy Engineering" issued by System Reform Office of the State Council and pushing a good circulation of management of reservoir engi.

Starting from the particularities of the construction of the hydraulic tunnel engineering, this paper expounds the claim of the contractors towards the tunnel construction, describes in detail the claim work from the preparing work, lodging claims and matters needing attention, and points out the importance and necessity of the claims for the contractors.