张北-尚义地震典型地段的地表破坏

GROUND FAILURES CAUSED BY THE ZHANGBEISHANGYI EARTHQUAKE IN SOME TYPICAL SECTIONS

张北－尚义地震引起了局部地表环境的破坏，主要表现为地裂缝、河岸坍塌、巨石滚落、喷砂冒水、冰面开裂等现象。对典型地段的地表破坏现象进行了分析研究，认为地裂缝优势走向为ＮＮＷ与ＮＷＷ向，可能与发震构造一致。

ame parts of ground were destroyed by ZhangbeiShangyi M6.2 earthquake. The main styles include ground fissure, falling of river bank, rolling and falling of large stones, sandboils and waterspouts and ice surface parting. In this paper, the phenomena of ground failures in some typical sections are simply presented and the scientific significances are analysed.