如果稳定降深小于等于孔深与初始静止水位之差的0.2倍,则Ha=孔深与初始静止水位之差的1.3倍 !y>MchNv
如果稳定降深小于等于孔深与初始静止水位之差的0.3倍,则Ha=孔深与初始静止水位之差的1.5倍 !%x=o&
如果稳定降深小于等于孔深与初始静止水位之差的0.5倍,则Ha=孔深与初始静止水位之差的1.7倍 9x~qcH%
如果稳定降深小于等于孔深与初始静止水位之差的0.8倍,则Ha=孔深与初始静止水位之差的1.85倍 J6H3X;vxQw
如果稳定降深小于等于孔深与初始静止水位之差的1.0倍,则Ha=孔深与初始静止水位之差的2.0倍 :W/,V^x}
ha=过滤器进水段-降深