中文摘要：

叠瓦状逆断层是地壳中分布的主要断层组合形式之一。为了揭示地质演化过程中不同组合形式下叠瓦状逆断层间地应力分布规律,采用大型物理模拟手段,以龙门山地区的地质构造为背景,研究了两条平行叠瓦状逆断层和在其间与之相交的断层组合形式下地应力分布和变化规律。取得的主要认识如下：（1）对于研究区仅分布两条平行的叠瓦状逆断层,构造挤压方向与它们的走向垂直的情况,靠近构造挤压端的断层会首先发生失稳破坏,较大的局部应力释放会使地壳内部整体应力有所降低,但在下伏断层的深部会出现应力的突然升高;（2）对于研究区不仅分布两条平行的叠瓦状逆断层,而且在两条断裂之间存在一条与它们垂直的逆断层,构造挤压方向与叠瓦状逆断层垂直,叠瓦状逆断层附近浅层地应力变化较早,地壳易沿叠瓦状逆断层首先失稳活动,进而带动所夹逆断层的地应力发生调整;（3）对于研究区不仅分布两条平行的叠瓦状逆断层,在其间夹着走向与它们垂直的逆断层,构造挤压方向与叠瓦状逆断层斜交情况,地壳易沿所夹断层首先失稳活动,进而触发叠瓦状逆断层地应力变化;（4）仅存在叠瓦状逆断层,地应力分布较为均匀;叠瓦状逆断层间夹逆断层的情况下,在断层端部和几条断层交汇部位出现了应力集中现象。该问题的研究对区域稳定性评价和地震预测具有一定的指导意义。

英文摘要：

Imbricate reverse fault is a kind of fault combination in crust. This paper aims to reveal the crustal stress distributed between imbricate reverse faults under different combinations. It takes Longmenshan fault as research background. The large physical simulation tests are carried out. Crustal stress distributing and changing laws are got as follows.（ 1） There are two parallel imbricate reverse fault distributions in research area. Their trends are penperdicular to tectonic compression direction. The fault near the compressing part can fail firstly. Meanwhile,it can result in stress release. However,there can be a sudden stress increasing around underlying fault in depth.（ 2）There are not only two parallel imbricate reverse faults,but also,a thrust fault distributed between them. The tectonic compression direction is perpendicular to imbricate reverse fault. The shallow crustal stress changes early.Crust may break along imbricate thrust fault.（ 3） There are not only imbricate reverse fault,but also another thrust fault distributed between them. The tectonic compression direction and strike of imbricate thrust fault are skew. The crust may break along thrust fault which distributes between imbricate thrust faults.（ 4） When there are only imbricate thrust faults,the crustal stress distributes uniformly. However,stress concentration phenomenon appears at the end or intersection of several faults. The research has certain guiding significance to regional stability evaluation and earthquake prediction.