对底部铺设土工合成物的堤坝工程 ,本文认为土工合成物所承受的力是由堤体产生的内力 ;在此基础上给出了边坡稳定性的分析方法。计算表明 ,土工合成物的抗滑作用与滑动面所处地基的深度有关 ,浅层滑动时抗滑作用显著 ,深层滑动时抗滑作用较小 For the embankment project with the geosynthetics laid at the bottom, this paper considers that the force borne by the geosynthetics is the internal force generated by the embankment. On this basis, the method of slope stability analysis is given. The calculation shows that the anti-slip effect of the geosynthetics is related to the depth of the foundation on which the sliding surface is located, the anti-sliding effect is significant when the shallow layer is sliding, and the anti-sliding effect is small when the deep layer is sliding