以24月龄紫刺参作为研究对象,采用回归分析的方法,研究紫刺参养殖形态性状与体质量的关系。为获得更精确的形态性状与体质量(TW)的关系,将紫刺参体长(L)、体宽(W)和理论体长Le[由SLW(square root of the length-width,√L×W)转换而...以24月龄紫刺参作为研究对象,采用回归分析的方法,研究紫刺参养殖形态性状与体质量的关系。为获得更精确的形态性状与体质量(TW)的关系,将紫刺参体长(L)、体宽(W)和理论体长Le[由SLW(square root of the length-width,√L×W)转换而来]分别与体质量进行拟合,筛选评价紫刺参形态性状与体质量关系的最佳形态参数和曲线模型。结果显示,紫刺参体长、体宽、SLW和体质量等各性状的变异系数(CV)在31.52%~66.85%波动,体质量的变异系数最大,SLW的变异系数最小。回归分析表明,紫刺参各形态性状与体质量关系的最优拟合模型均为幂函数,且理论体长Le是描述紫刺参形态性状-体质量关系的最优形态指标;紫刺参为负异速生长模式,即形态性状的增长快于体质量的增加。研究结果可为紫刺参的生长规律研究和养殖管理提供科学依据和参考资料。展开更多
In order to analyze the stability of the underground rock structures,knowing the sensitivity of geomechanical parameters is important.To investigate the priority of these geomechanical properties in the stability of c...In order to analyze the stability of the underground rock structures,knowing the sensitivity of geomechanical parameters is important.To investigate the priority of these geomechanical properties in the stability of cavern,a sensitivity analysis has been performed on a single cavern in various rock mass qualities according to RMR using Phase 2.The stability of cavern has been studied by investigating the side wall deformation.Results showed that most sensitive properties are coefficient of lateral stress and modulus of deformation.Also parameters of Hoek-Brown criterion and r c have no sensitivity when cavern is in a perfect elastic state.But in an elasto-plastic state,parameters of Hoek-Brown criterion and r c affect the deformability;such effect becomes more remarkable with increasing plastic area.Other parameters have different sensitivities concerning rock mass quality(RMR).Results have been used to propose the best set of parameters for study on prediction of sidewall displacement.展开更多
文摘以24月龄紫刺参作为研究对象,采用回归分析的方法,研究紫刺参养殖形态性状与体质量的关系。为获得更精确的形态性状与体质量(TW)的关系,将紫刺参体长(L)、体宽(W)和理论体长Le[由SLW(square root of the length-width,√L×W)转换而来]分别与体质量进行拟合,筛选评价紫刺参形态性状与体质量关系的最佳形态参数和曲线模型。结果显示,紫刺参体长、体宽、SLW和体质量等各性状的变异系数(CV)在31.52%~66.85%波动,体质量的变异系数最大,SLW的变异系数最小。回归分析表明,紫刺参各形态性状与体质量关系的最优拟合模型均为幂函数,且理论体长Le是描述紫刺参形态性状-体质量关系的最优形态指标;紫刺参为负异速生长模式,即形态性状的增长快于体质量的增加。研究结果可为紫刺参的生长规律研究和养殖管理提供科学依据和参考资料。
文摘In order to analyze the stability of the underground rock structures,knowing the sensitivity of geomechanical parameters is important.To investigate the priority of these geomechanical properties in the stability of cavern,a sensitivity analysis has been performed on a single cavern in various rock mass qualities according to RMR using Phase 2.The stability of cavern has been studied by investigating the side wall deformation.Results showed that most sensitive properties are coefficient of lateral stress and modulus of deformation.Also parameters of Hoek-Brown criterion and r c have no sensitivity when cavern is in a perfect elastic state.But in an elasto-plastic state,parameters of Hoek-Brown criterion and r c affect the deformability;such effect becomes more remarkable with increasing plastic area.Other parameters have different sensitivities concerning rock mass quality(RMR).Results have been used to propose the best set of parameters for study on prediction of sidewall displacement.
