关键词: 土石坝;渗漏;应急抢险;除险加固;东方山水库;

Abstract: In August 2018, the Dongfangshan Reservoir in Huangshi City experienced a pipeline leakage with a maximum flow of 0.886 m3/s. Combined with emergency rescue and reinforcement project for the pipeline leakage in the dam of Dongfangshan Reservoir, we analyzed the causes of leakage in the dam, introduced the emergency rescue measures of dam leakage and dam reinforcement measures, and summed up the experiences of emergency rescue and reinforcement. Practices showed that the emergency rescue methods such as discharge by water culvert pipe, emergency pumping by water pump, plugging of leakage pipeline with level batching and pressure suppressing at leakage outlet area of the dam toe could effectively avoid collapse of Dongfangshan Reservoir Dam. The methods such as digging and backfilling of leakage channel, anti-seepage and reinforcement of dam body and termite killing could be used to effectively reinforce the Dongfangshan Reservoir Dam. According to the subsequent geological exploration and the actual situation revealed during the construction process, the main reason of the pipeline leakage risk of the Dongfangshan Reservoir Dam was the structural defects of the dam body. However, the aggravating effect of termite nesting and static pressure grouting hole sealing quality defects on the formation of leakage channel cannot be ruled out.

Key words: earth-rock dam; pipeline leakage; emergency rescue; dam reinforcement; Dongfangshan Reservoir