The Study Of Management Of The Water Conservancy Project Of Manla Station At Tibet

The Tibetan Manla Water Conservancy Project(hereinafter the Project) is located in southwestern Tibet Autonomous Region, which has a cold climate and is frequently hit by earthquakes. It was put into operation in the late 1990 s and has created enormous social and economic benefits.Asummary of operational and management experience at the Project reveals that the Project has a relatively sound management organization, the reservoir can be put into use according to dispatch regulations and plans, and a flood contingency plan for flood control at the reservoir is in place. Additionally, the dam basically undergoes proper maintenance, the site is well-equipped with engineering facilities, and the hydropower plant can operate to basically meet the development requirement of “self support”, which means the plant can use its all profits to support its expansion and development. However, a series of problem with the Project have been found. As the aging safety monitoring system for the dam is in disrepair and unable to operate automatically, monitoring programs at the project often fail to meet related industrial standards and regulations. The hydrological telemetry system can’t satisfy the needs of reservoir operation during flood seasons. Additionally, the concrete in the spillway tunnels subjected to freeze-thaw weathering is damaged and eroded by minerals in water, resulting in leakage and mineral precipitation. These problems haven’t yet solved thoroughly though measures have been taken. Despite of the normal operation of the hydropower plant, it is quite hard and difficult to further improve its economic benefits,raise the incomes of employees, and manage the plant according to the modern corporate institution.In this context, management research on the Manla reservoir was conducted.Based on a study of the regional characteristics of Tibet and the Project’s specific situation after completion, a public institution-enterprise mixed management mode was proposed. It was proposed that a catchment management institution be established as a public institution to supervise the power generation. The catchment management institution can perform its functions well through unified management of flood control,irrigation, and power generation. A mechanism for coordinated operation of multiple systems, including the safety, flood control, irrigation, generation, and diversified business systems, was developed based on the results of an investigation into the currentstatus of the reservoir catchment and the layout and operational performance of the hydropower project. A development program comprising both engineering and non-engineering measures was put forward from the perspectives of the maintenance and safe operation of the reservoir, with an aim of achieving sustainable development of the Project management organization. The non-engineering measures include boosting the building of a reservoir management team, advancing the reform of the reservoir management system, accelerating the establishment of a reservoir region and water resource management system, updating the contingency plans for the reservoir,establishing an annual operation reporting system for the reservoir, drafting operation,maintenance, and monitoring manuals for the reservoir, and conducting systematic research to develop an automatic and remote monitoring system for the reservoir.Engineering measures include carrying out research on the failure mechanisms of concrete in spillway tunnels and corresponding countermeasures, on the monitoring and control of landslides in the reservoir region, and on the influence of the accumulation of sediment in the reservoir. The research results above have been listed in the Safe Operation and Management of Manla Reservoir Project and implemented.