| 1. | Impermeable wall of the dam is very long , so the task is burdensome
由于堤坝防渗墙长度很大，因此检测任务繁重。 |
| 2. | Safety monitoring on perpendicaiar impermeable wall in main embankment at southern bank of jinjiang
荆南长江干堤垂直防渗工程安全监测 |
| 3. | As primary engineering measure , impermeable wall is applied broadly to reinforcing dike in middle - lower reaches of yangtze river
防渗墙作为堤防防渗处理的主要工程措施，在长江中下游堤防加固工程中得到了广泛的运用。 |
| 4. | Rayleigh surface wave exploration technique is used to get transverse wave speed of impermeable wall , which build on the theory of half space
在此基础上，我们把瞬态面波技术应用于防渗墙无损检测中以获得防渗墙的剪切波速。 |
| 5. | Finally a non - destructive detecting way is established to examine the quality of impermeable wall that proved to be effective by actual engineering
最后，建立了完整的堤坝防渗墙检测方法，并通过在实验段的实际应用，证明了此方法的有效性。 |
| 6. | The influence of cutting infiltration to groundwater surroundings by impermeable wall of dike in middle - lower reaches of yangtze river is abroad , and also is a long process
长江中下游堤防防渗墙截渗对地下水环境的影响涉及范围较广，同时也是一个长期的过程。 |
| 7. | Conventional checking way cannot meet the actual need , so it is very important to develop a non - destructive detecting way that can determine the quality of impermeable wall efficiently
由于防渗墙本身的特点，传统的检测方法已不能满足目前的需要，因此急需建立一种快速、有效的堤坝防渗墙无损检测方法。 |
| 8. | Impermeable wall made up by mixing grout and dike fill can greatly enhance the flood - resistant ability of the exiting dam . the quality of impermeable wall is affected easily by many factors , so it is very necessary to detect the quality of impermeable wall
防渗墙施工质量由于受地质条件、施工技术等多种因素影响容易出现问题，因此需要进行检测以便及时发现问题并采取相应措施，保证堤坝在防汛期间的安全。 |
| 9. | Impermeable wall interdicts or weakens waterpower contact of seepage intercomplementarity between groundwater inside dike and river outside dike . especially , mass continuous concrete wall may have made effect on groundwater power field , chemistry field and water resource
同时由于防渗墙阻断或减弱了堤内地下水与堤外江水渗流互补的水力联系，特别是建设大规模连续防渗墙可能对地下水动力场、水化学场以及地下水资源等产生影响。 |
| 10. | Impervious wall is thin and deep , so it cannot satisfy the hypothesis of half space . the surface wave theory of impervious wall is analyzed and proves that surface wave speed in impermeable wall is nearly equal with that in plane - strain problem , so the transverse w ave speed getting by rayleigh surface wave exploration technique can satisfy the precision desire of engineering
我们对面波在防渗墙中传播原理进行了分析，证明防渗墙中的面波波速与半空间理论中面波波速差别很小，因此，用瞬态面波检测技术来获得剪切波速可以满足工程精度的要求。 |
