土石坝坝体反滤料特征粒径计算与包线设计  

Calculation of characteristic particle size and envelope of filter material in earth-rockfill dams

作　　者：贺新华 蔡勇平 蔡晓鸿 HE Xinhua;CAI Yongping;CAI Xiaohong(Water Conservancy Bureau of Lianhua County,Jiangxi Province)

机构地区：[1]江西省莲花县水利局,江西莲花337100 [2]江西省吉安市水利水电规划设计院,江西吉安343000 [3]江西省吉安市水利局,江西吉安343000

出　　处：《大坝与安全》2022年第6期23-26,共4页Dam & Safety

摘　　要：按SL 274—2020《碾压式土石坝设计规范》,反滤层设计推荐采用谢拉德反滤层设计准则,根据被保护土特征粒径,全面介绍了反滤料特征粒径与包线的计算及拟定方法,给出了防渗体的裂缝渐行淤塞修复相应特征粒径约束条件,使土石坝坝体反滤层设计更合理、可靠。According to SL 274—2020 Design Code for Rolled Earth-rock Fill Dams,Sherard inverted layer design criteria are recommended.Based on the characteristic particle size of protected soil,the characteristic particle size of filter material and the envelope are calculated,and constraint condition for the closure and recovery of the crack in impervious body is presented,which make the inverted layer more reliable and reasonable.

关 键 词：反滤层 特征粒径 反滤料包线 

分 类 号：TV44[水利工程—水工结构工程]