附录 > 经验参数汇编 > 附5. 给水度(specific yield)经验数值表

给水度(specific yield)经验数值表

介质类型	给水度	参考资料
粘土	0.01~0.18	A
砂砾，细	0.13~0.40	A
砂砾，中等	0.17~0.44	A
砂砾，粗	0.18~0.43	A
石灰石	0.00~0.36	A
黄土	0.14~0.22	A
细砂	0.01~0.46	A
中砂	0.16~0.46	A
粗砂	0.18~0.43	A
Sand,Eolian砂风尘	0.32~0.47	A
砂岩，细	0.02~0.40	A
砂岩，中	0.12~0.41	A
片岩	0.22~0.33	A
片岩，风化的	0.06~0.21	B
淤泥	0.01~0.39	A
粉砂岩	0.01~0.33	A
凝灰岩	0.02~0.47	A

注：

（A）Morris.D.A. and A.I.Johnson.1967. Summary of hydrological and physical properties of rock and soil materials as analyzed by the Hydrologic Laboratory ofthe U.S.Geological Survey.USGS Water Supply Paper 1839-D.

（B）Stewart J. W. 1964. Infiltration and permeability of weathered crystalline rocks. Georgia Nuclear Laboratory. Dawson County, Georgia. USGS Bull. 1133-D. p.57.