Practice and Experience of Environment Protection and Water-soil Conservation Supervision for Longtan Hydropower Station;

Waste Water Disposal for Macun Aggregate Production System of Longtan Hydropower Station;

Engineering characteristics of defective geological bodies at right-bank dam abutment of Longtan Hydropower Station and analysis of their causes;

Study on the general layout and key technical issues of Longtan Hydropower Project;

Brief introduction of financial management on the Longtan Hydropower Project;

The paper gives a presentation of the excavation process of the underground main power house of the Longtan hydropower project, which is, at the moment, one of the largest underground chambers in the world.

Study on non-staged construction of NRL 400m scheme of Longtan Hydroelectric Project;

Analysis and assessment on the stability of non-excavated slope with inverted creeping rock mass for Longtan Hydroelectric Project;

Cause analysis and treatment on accumulatively weathered deep channel at right-bank dam abutment of Longtan Hydroelectric Project;

Safety-monitoring data used in Longtan project for high slope construction;

The RCC dam of Longtan project is one of the highest dam in the world under construction.

Considering the 420m intake high slope and complicated geological conditions at the right bank of Longtan project, pre-stressed anchorage cables of 1 000 kN, 2 000 kN and 3 000 kN grades are adopted for reinforcement support so as to ensure the integral stability of the slope and the long-term safe operation of the project.

2 generating units of Huanglongtan Hydropower Station are located on the Huanglong-Caodian Fault therein with broken foundation rock,serious scour occurs along the foundations of both the outlets under the flood discharge from the dam,which causes a drop chute with the depth of about 10m outside of the outlets and serious inside scour on the lower foundation with three scouring pits.