The structural characteristics and mechanical properties of the rock mass are important parts of the feasibility study on the nuclear power engineering field. In this study, by means of in situ investigation and stati...The structural characteristics and mechanical properties of the rock mass are important parts of the feasibility study on the nuclear power engineering field. In this study, by means of in situ investigation and statistics, the structural plane and joint fissure features of the rock mass were analyzed and discussed at different plots and different depth scopes in the Tianwan Nuclear Power engineering field, the rock mass integrality and its weathered degree were evaluated respectively, and especially, the unfavorable geological phenomena of strongly-weathered cystid existing in the field were studied. According to the results of indoor rock mechanical tests, in combination with drilling, the shallow seismic prospecting, sonic logging and point load tests, the statistical results of physical and mechanical indices of rocks at key plots of the field were analyzed, and the design parameters of the field were calculated. It provided scientific basis for the foundation design of the nuclear power plant.展开更多
通过2011—2013年对田湾核电站厂区及周围环境大气气溶胶中总α、总β放射性水平的监测,结果表明：该核电站厂区及周围环境大气气溶胶中总α、总β放射性浓度范围分别为0.023 m Bq/m^3-0.296 m Bq/m^3、0.240 m Bq/m^3-2.460 m Bq/m^3,...通过2011—2013年对田湾核电站厂区及周围环境大气气溶胶中总α、总β放射性水平的监测,结果表明：该核电站厂区及周围环境大气气溶胶中总α、总β放射性浓度范围分别为0.023 m Bq/m^3-0.296 m Bq/m^3、0.240 m Bq/m^3-2.460 m Bq/m^3,放射性水平在本底范围内,未见明显差异;总α、总β放射性水平波动受气象条件影响,呈季节性变化特征。展开更多
文摘The structural characteristics and mechanical properties of the rock mass are important parts of the feasibility study on the nuclear power engineering field. In this study, by means of in situ investigation and statistics, the structural plane and joint fissure features of the rock mass were analyzed and discussed at different plots and different depth scopes in the Tianwan Nuclear Power engineering field, the rock mass integrality and its weathered degree were evaluated respectively, and especially, the unfavorable geological phenomena of strongly-weathered cystid existing in the field were studied. According to the results of indoor rock mechanical tests, in combination with drilling, the shallow seismic prospecting, sonic logging and point load tests, the statistical results of physical and mechanical indices of rocks at key plots of the field were analyzed, and the design parameters of the field were calculated. It provided scientific basis for the foundation design of the nuclear power plant.
文摘通过2011—2013年对田湾核电站厂区及周围环境大气气溶胶中总α、总β放射性水平的监测,结果表明：该核电站厂区及周围环境大气气溶胶中总α、总β放射性浓度范围分别为0.023 m Bq/m^3-0.296 m Bq/m^3、0.240 m Bq/m^3-2.460 m Bq/m^3,放射性水平在本底范围内,未见明显差异;总α、总β放射性水平波动受气象条件影响,呈季节性变化特征。
