The stress concentration caused by river valleys is conspicuous with which some structural phenomena in river valley and rock stability of underground structure have relationship.
河谷下切引起的应力集中是显著的，河谷地区许多构造形迹及地下工程中出现的若干围岩稳定问题都与此有关。
The results show that late Quaternary extension has been observed along the longitudinal Anninghe valley, along the Daliangshan structural zone, in the Zoige basin and in the upstream Minjiang river.
结果显示，伸展构造主要见于下列几个构造带：沿南北走向的安宁河谷地、大凉山构造带、若尔盖盆地、岷江断裂带等。
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