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土工合成材料作为一种新兴的防渗材料,在大坝建设中的应用正在不断地得到发展.对那些不具备重型压实设备条件的边远地区来说,大坝的防渗处理采用土工合成材料来代替沥青混凝土是省时,又经济的.在欧洲,目前已有30多座坝成功地应用土工织物和土工薄膜作为大坝的防渗护面.葡萄牙360ft(英尺)高的帕拉德拉坝就是其中的一个.该坝在运行的前25年中,平均渗漏量为132uk加伦)/S,曾使用过橡胶密封剂和紫钢片止水,但均遭失败.1981年水库排空,施工人员在37°的斜坡迎水面上铺设了18acre(英亩)浸渍了沥青的土工合成物.至此,大坝渗漏量降到了容许值4uk(加仑)/S,为原渗漏量的1/130.
As an emerging impermeable material, geosynthetics are being used in dam construction continuously.For those remote areas that do not have the conditions of heavy compaction equipment, the seepage control of the dam is made of geosynthetics To replace asphalt concrete is time-saving and economical.In Europe, geotextiles and geotextile films have been successfully applied to dam dams for over 30 dams. Portugal 360-foot (tall) Paradera One of them, the dam, had an average leakage of 132 kcal / s during the first 25 years of operation, and had used rubber sealants and purple steel to stop water but all failed. The builders installed 18 acre of asphalt-impregnated geosynthetics on the slopes of the slopes of 37 °. At this point, the dam leakage had dropped to an acceptable value of 4 ug / s, 1/130.