土工织物在宁夏黄河段整治工程中的应用

介绍了土工布做反滤层的设计和施工方法，对土工布和草土体做反滤层的效果和工程造价进行了分析评价．采用草土体做反滤层，由于保土性较差，坝项平面出现了局部塌坑；而土工布反滤层保土性较好，坝体整体变形小，反滤效果较显．土工布和草土体做反滤层，单位工程量造价相差在10％以内；且土工布做反滤层所需工日较少，能加快施工速度．因此，土工布做反滤层在丁坝、人字垛工程建设中可代替草土体．大量推广应用．

Application of geotextile in the Yellow River channel realignment in Ningxia

The paired tests,geotextile and grass-soil were used respectively as filtering layer to protect bank slope in the geoyne or herringbone dam constr uction for the regulation of river. The report introduced the design and constru ction method for the geotextile used as filtering layer,the effect and cost als o had been evaluated. The pitfall,because of the poor soil holding capacity,co uld be seen on the part of dam surface with the grass-soil filtering layer,but the anamorphosis for the dam with the geotextile filtering layer seldom took pl ace,and that showed the effect was remarkable. To make comparison between two d esigns,the unit price of the geotextile filtering layer was 10%less than that of the grass-soil,the former could save man-labour and shorten the time limit for the project. Thus it can been seen that the geotextile may be used instead of the grass-soil as filtering layer during the dam construction for river regu lation and can extend in the future.