土工布在水利工程中的应用及强度要求分析

土工(gong)(gong)布(又(you)称无纺(fang)布)作(zuo)为一种反滤材料，广泛应用(yong)于水利工(gong)(gong)程，尤其(qi)是堤防工(gong)(gong)程、灌溉工(gong)(gong)程和排水工(gong)(gong)程。

土工(gong)布(bu)作为一种新型(xing)反滤(lv)材料(liao)，在水(shui)利工(gong)程(cheng)中起(qi)着(zhe)重要(yao)的(de)防(fang)渗(shen)作用。其(qi)应用和选择(ze)是否合理，直接关系到工(gong)程(cheng)建设的(de)安全性(xing)和经济性(xing)。

土(tu)工(gong)布作为(wei)工(gong)程设计和(he)施工(gong)中的反(fan)滤材料(liao)，应(ying)具有(you)保水、透水、防堵三(san)大功能，其(qi)强度(du)应(ying)符合要求。在实践中，有(you)以下(xia)几点需要讨论。

(1)不同类型(xing)和(he)规格的土(tu)工(gong)(gong)(gong)(gong)(gong)布(bu)具有(you)不同的保土(tu)、渗(shen)透(tou)和(he)防堵性(xing)(xing)能。根据(ju)工(gong)(gong)(gong)(gong)(gong)程应(ying)用(yong)条(tiao)件，保护(hu)土(tu)的性(xing)(xing)质、颗粒组成和(he)渗(shen)流特性(xing)(xing)的参数选(xuan)择应(ying)与(yu)土(tu)工(gong)(gong)(gong)(gong)(gong)布(bu)相适应(ying)。目前，土(tu)工(gong)(gong)(gong)(gong)(gong)布(bu)在(zai)工(gong)(gong)(gong)(gong)(gong)程中的具体(ti)应(ying)用(yong)和(he)选(xuan)择大多脱离上(shang)述条(tiao)件。

(2)土工布(bu)在应(ying)用过程中(zhong)，由于沉(chen)积不均匀，在施工和运输过程中(zhong)受到拉伸、压缩、撕裂和顶(ding)部破裂，要求(qiu)(qiu)土工布(bu)具有一(yi)定的强度(du)来满足上(shang)述(shu)要求(qiu)(qiu)。

 (3)目前设计(ji)图纸和说明(ming)中，一般只要(yao)求g/m2，而较少(shao)提及更重要(yao)的(de)反滤性能和强度指(zhi)标。