m{atrix}-p{ermeability} pcdc e{lement} c{onstitutive}-m{odel} hydr{aulic}-p{orous}-m{edium} prop{erty} m{atrix}-p{ermeability} **描述:**单元渗透系数(渗流开关打开时起作用)。省缺值:0.0 。可选 值: f(float,渗透系数值)