紫荆关断裂是保定西部山区区域性深大断裂, 经过了多期复杂的地质作用, 形成独特的地质构造, 对区域地下 水的赋存、运动、排泄规律起了明显控制作用。根据地质调查、钻探、压水试验等勘察资料, 分析了紫荆关深断裂在 燕川水库库区的构造特征、破碎带及其周围不同岩性的导水性, 查明了燕川水库渗漏原因及渗漏部位, 为水库除险 加固提供可靠依据。

Zijingg uan fr act ur e is a reg ional deep fault lo cated in the w estern mo untain area of Bao ding . It formed a unique geolog2 ical structure after mo re than a per iod of complex geo log ical processes, such as compr essiv e shear , transtensio n, and lift. I t has significant contr olling effects on the sto rag e, mov ement, discharg e of r eg io nal gr oundw ater. Accor ding to the reg ional geolog ical data from g eolog ical survey , drilling, and pr essure wat er test , the t ecto nic character istics, hydraulic conductivities in different ar2 eas and str at a of Zijingg uan deep fracture in the Yanchuan reserv oir w ere analyzed. T he leakage causes and positio ns of Yan2 chuan r eser voir w ere analy zed, w hich can prov ide reference fo r the r eser voir r einforcement.