長絲土工布，價格略高于普通的短纖維土工布，但其強度遠遠大于短纖的強度，通常垃圾填埋廠使用較多。
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?長絲土工布非織造土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)有短纖(xian)針(zhen)刺(ci)(ci)(ci)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)和(he)紡粘法(fa)(fa)長(chang)絲(si)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)。短纖(xian)針(zhen)刺(ci)(ci)(ci)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)是(shi)(shi)以滌綸(lun)、丙綸(lun)或錦綸(lun)短纖(xian)為原料(liao)(liao)，通(tong)過和(he)毛、流理(li)、鋪(pu)網(wang)、針(zhen)刺(ci)(ci)(ci)、復針(zhen)刺(ci)(ci)(ci)加工(gong)(gong)(gong)而成(cheng)。其特點是(shi)(shi)密度高、結構蓬松、防腐、耐老化(hua)、耐酸堿、吸水(shui)性(xing)和(he)透水(shui)性(xing)能(neng)(neng)好、抗(kang)(kang)拉強度高、抗(kang)(kang)形(xing)變(bian)能(neng)(neng)力(li)大。適用(yong)(yong)(yong)(yong)(yong)于(yu)防治(zhi)路(lu)面(mian)翻(fan)漿(jiang)、護(hu)坡(po)、水(shui)渠(qu)保(bao)護(hu)層(ceng)等(deng)(deng)工(gong)(gong)(gong)程中(zhong)(zhong)，在(zai)(zai)國(guo)內應(ying)用(yong)(yong)(yong)(yong)(yong)較(jiao)(jiao)廣泛(fan)。如(ru)遼河(he)油(you)田的海灘，土(tu)(tu)(tu)質(zhi)多呈高含(han)水(shui)、高壓(ya)縮(suo)性(xing)、低承(cheng)載(zai)力(li)的軟塑(su)(su)(su)和(he)流塑(su)(su)(su)狀口在(zai)(zai)春融期(qi)開始(shi)鋪(pu)路(lu)時(shi)，由于(yu)土(tu)(tu)(tu)壤水(shui)份重(zhong)新分布(bu)(bu)(bu)變(bian)化(hua)，導(dao)致路(lu)面(mian)嚴重(zhong)翻(fan)漿(jiang)。針(zhen)對這種(zhong)狀況(kuang)，遼河(he)油(you)田設計(ji)選(xuan)用(yong)(yong)(yong)(yong)(yong)了國(guo)產LHw一4叨滌綸(lun)針(zhen)刺(ci)(ci)(ci)無(wu)紡土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)來防治(zhi)春融期(qi)凍(dong)土(tu)(tu)(tu)填方(fang)路(lu)基的路(lu)面(mian)翻(fan)漿(jiang)。具(ju)(ju)體做法(fa)(fa)是(shi)(shi)在(zai)(zai)礦渣路(lu)面(mian)下(xia)(xia)設單層(ceng)LHw一400土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)作(zuo)(zuo)為隔(ge)(ge)離層(ceng)。試驗結果(guo)表明(ming)，這種(zhong)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)具(ju)(ju)有顯著的隔(ge)(ge)離作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)，能(neng)(neng)有效地防治(zhi)路(lu)面(mian)翻(fan)漿(jiang)冒泥(ni)，并具(ju)(ju)有補強作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)和(he)應(ying)力(li)擴(kuo)散作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)，大大提高了濕軟路(lu)基的穩定性(xing)。又如(ru)大廣壩(ba)樞紐工(gong)(gong)(gong)程攔河(he)大壩(ba)全長(chang)5842米，其中(zhong)(zhong)左岸(an)土(tu)(tu)(tu)壩(ba)2792米，右岸(an)土(tu)(tu)(tu)壩(ba)2339米，在(zai)(zai)土(tu)(tu)(tu)壩(ba)上游護(hu)坡(po)采用(yong)(yong)(yong)(yong)(yong)了針(zhen)刺(ci)(ci)(ci)無(wu)紡布(bu)(bu)(bu)和(he)抱石(shi)相(xiang)結合的方(fang)法(fa)(fa)護(hu)坡(po)。經(jing)過兩(liang)年的護(hu)坡(po)施(shi)(shi)工(gong)(gong)(gong)后表明(ming)，該方(fang)法(fa)(fa)具(ju)(ju)有抗(kang)(kang)風浪沖(chong)刷，減小風浪爬(pa)高及適應(ying)變(bian)形(xing)能(neng)(neng)力(li)強等(deng)(deng)優點。再(zai)如(ru)投(tou)資8億(yi)元(yuan)的山東引黃(huang)濟(ji)青工(gong)(gong)(gong)程中(zhong)(zhong)，選(xuan)用(yong)(yong)(yong)(yong)(yong)了短纖(xian)針(zhen)刺(ci)(ci)(ci)無(wu)紡土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)作(zuo)(zuo)渠(qu)面(mian)保(bao)護(hu)層(ceng)，工(gong)(gong)(gong)程設計(ji)用(yong)(yong)(yong)(yong)(yong)布(bu)(bu)(bu)量為90多萬平方(fang)米、施(shi)(shi)工(gong)(gong)(gong)方(fang)法(fa)(fa)是(shi)(shi)在(zai)(zai)渠(qu)面(mian)上鋪(pu)放一層(ceng)塑(su)(su)(su)料(liao)(liao)膜，上方(fang)再(zai)鋪(pu)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)，然(ran)后排好混(hun)凝土(tu)(tu)(tu)板防止(zhi)渠(qu)中(zhong)(zhong)水(shui)同地下(xia)(xia)滲漏，而長(chang)絲(si)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)主要起(qi)保(bao)護(hu)作(zuo)(zuo)用(yong)(yong)(yong)(yong)(yong)，以防止(zhi)塑(su)(su)(su)料(liao)(liao)布(bu)(bu)(bu)被混(hun)凝土(tu)(tu)(tu)板破壞:此外，短纖(xian)針(zhen)刺(ci)(ci)(ci)土(tu)(tu)(tu)工(gong)(gong)(gong)布(bu)(bu)(bu)還應(ying)用(yong)(yong)(yong)(yong)(yong)于(yu)安溝河(he)水(shui)墜壩(ba)中(zhong)(zhong)作(zuo)(zuo)為排水(shui)設施(shi)(shi)，應(ying)用(yong)(yong)(yong)(yong)(yong)于(yu)海堤軟基處(chu)理(li)等(deng)(deng)，都(dou)收到了較(jiao)(jiao)好的技術效果(guo)和(he)經(jing)濟(ji)效果(guo)。