To those products which require higher puncture and tear strength but less tensile strength , such as geomembrane , the phenomena above has great economical meaning 这在对穿刺强度和撕裂强度要求较高而拉伸强度要求不高的场合，例如土工膜，具有显著的经济意义。
For example , the category of the geomembranes is numerous and there are still a lot of shortage how to select geomembranes in request to exert its physics mechanics characteristic well 例如，土工膜的种类繁多，在如何依据具体的要求选择土工膜品种，使其充分发挥物理力学特性上还存在许多不足。
The research is still a new lesson of the geomembranes , there are a lot worry because geomembranes " physical and chemic characteristic ca n ' t still be completely affirmed in engineering field 而且，对土工膜的研究还是一门新的课题，工程界对于它的一些物理化学性能还不能完全肯定，还存在着很多疑虑。
2 . through the hydraulic puncturing experiment under different material and different opening size , summarizing the rule of stress and strain and the rule of intensity about the geomembrane with damnification 2 、通过对几种不同土工膜在不同孔径下的液压胀破试验，总结出土工膜损伤后的应力应变规律和强度规律。
7 enumerating the engineering example that composite geomembranes are used to act as anti - seepage material and using mathematics experience model that are established in the paper to compute leakage of the defected geomembranes 7 、结合复合土工膜防渗的工程实例，利用本文给出的拟合公式计算通过复合土工膜的缺陷渗漏量。
As for toluene , it was shown that the cumulative mass discharged from the gcl composite liner was several orders of magnitude greater than that from composite liners having a thicker soil liner 研究发现对于挥发性有机化合物甲苯，土工膜和gcl组成的复合衬里的浸出液总量要比土工膜和较厚粘土衬里组成的复合衬里大好几个量级。
Then the nonlinear finite element method is applied to evaluate the stresses and deformations of the selected hydraulic engineering project . the settlement of geomembrane composite central core is estimated by the rheology method 并结合具体的工程进行非线性有限元分析计算，确定其应力应变状态，利用流变学的方法计算土工膜复合心墙的沉降量。
Through the experiment , a few composite geomembranes physical characteristic and pull and stretch characteristics are conformed . the process that composite geomembrane is selected by finite element method is introduced in detail 结合具体工程，对几种型号的复合土工膜进行物理力学特性试验，详细介绍了利用有限单元法选择复合土工膜型号的过程。
The research results of geomembranes " function are few . especially , the work of calculating leakage due to defects in geomembranes just has started since the middle of 1980 ' s . all about affect the popularization and application of geomembranes 同时，对土工膜性能的研究成果较少，特别是对土工膜缺陷渗漏量计算从20世纪80年代中期才开始，这些都影响了土工膜的推广应用。
( 3 ) the upper result of settlement field , stress field and crack deepness offers a theoretics gist for reinforcing bank . the paper concludes several methods of reinforcement . through choosing project , made certain adopting geomebrance to reinforce the bank 本文又对堤防加固的各种措施方法进行了归纳整理，通过方案比选，选择用迎水面斜铺土工膜的方法进行防渗加固，并对土工膜的材料选择进行了计算。
