Chain pin method features flexible implementation, convenient material selection, simple arrangement and low cost.Therefore, it is widely applied in monitoring of water and soil conservation.Meanwhile, this method also is with disadvantages of lower monitoring preci-sion, frequently being disturbed and damaged, etc.In the paper, issues and solution of application of the chain pin method are discussed in combination with the practice of the chain pin method in monitoring of water and soil conservation of the newly-built passenger dedicated line from Xi'an to Baoji.

Design of measures for plant protection is one key point in technology in the hydropower project construction in high-cold re-gions because the regions where the hydropower projects are located are with high elevation and cold weather .The ecological system is ex-tremely weak.The vegetation after being damaged requires a long time to restore.In this paper, the technology for the turf transplantation is studied through the vegetation restoration by transplantation of the original turfs from the region where Dangka Hydropower Project is lo-cated.