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.

Summarizing experiences in construction management of tunnel engineering,this paper discusses how to set up an effective encouraging mechanism in construction and management of tunneling engineering in order to fully mobilize the enthusiasm of the masses and to enhance the level of construction management.

Dahuofang Reservoir Water Diversion Tunnel Engineering is the longest tunnel engineering in the world at present.

Constructing condition of tunnel engineering is very complicated ,and the variable factor is much more ,and the past experiencing safety management are not adapted to requirement of modern management ,so the modern science management method -system safety engineering-come into being .

Taking the tunnel project of Jingshi Superhighway in south-to-north water diversion project as the example, this paper expounds the excavation method, quality control measures and construction points of tunnel project passing through the silt stratum.

Starting from speciality of tunnel project construction,it illustrates contractor’s claim to tunnel construction and points out importance & necessity of claim to contractors from aspects of work of priparation,propoundation of claim and noteworthy items.

The construction condition of hydraulic tunneling project is always very complicated with more variable factors.

Based on the field engineering geological reconnaissance and the engineering geological classification of and evaluation on the wall -rock, this paper analyzes and evaluates the geological condition of general trunk tunnel construction from NO.