Compaction quality is directly related to the structure and seepage stability of a rockfill dam. To timely and accurately test the compaction quality of the rockfill material, four real-time test indexes were chosen to characterize the soil compaction degree based on the analysis of roller vibratory acceleration, including acceleration peak value (ap), acceleration root mean square value (arms), crest factor value (CF), and compaction meter value (CMV). To determine which of these indexes is the most appropriate, a two-part field compaction experiment was conducted using a vibratory roller in different filling zones of the dam body. Data on rolling parameters, real-time test indexes, and compaction quality indexes were collected to perform statistical regression analyses. Combined with the spectrum analysis of the acceleration signal, it was found that the CF index best characterizes the compaction degree of the rockfill material among the four indexes. Furthermore, the quantitative relations between the real-time index and compaction quality index were established to determine the control criterion of CF, which can instruct the site work of compaction quality control in the rockfill rolling process.

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Dynamic control of the flood limit water level is one of the key research topics in water conservancy field. This method is based on dynamic control of flood limited level of new concept, analysis of rainfall, flood forecast information availability, identification of reservoir flood limit water level dynamic control domain, and studied based on the comprehensive information of the reservoir water level dynamic control. The study on dynamic control of flood limit water level is conducive to the improvement of the current operation mode of reservoir, without losing the function of flood control to give full play to the potential of reservoir benefit, effectively solve the contradiction between flood control and the interest, increase the utilization ratio of water resources, provide the basis for sustainable development of water resources. This paper takes Geheyan reservoir as the object of study, systematic study of Qingjiang reservoir flood limit water level dynamic control domain, and the analysis of risks and benefits of dynamic control scheme, designed to fully confirm the superiority and feasibility of dynamic control of flood limited level of reservoir.

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