三维麦克垫是一种具(ju)有较好的(de)分(fen)离(li)、排(pai)(pai)水(shui)(shui)(shui)、过滤以及(ji)加固功(gong)能的(de)新(xin)型土工(gong)材料，三维(wei)(wei)麦克垫(dian)(dian)的(de)构(gou)造为(wei)(wei)排(pai)(pai)水(shui)(shui)(shui)芯材与(yu)两侧(ce)土工(gong)布(bu)(bu)通(tong)过热粘合作用而形成(cheng)，其中排(pai)(pai)水(shui)(shui)(shui)芯材是经过特殊挤压(ya)形成(cheng)“M”型的(de)纵(zong)向全断面排(pai)(pai)水(shui)(shui)(shui)通(tong)道的(de)三维(wei)(wei)聚丙(bing)烯网垫(dian)(dian)，而土工(gong)布(bu)(bu)则是针刺并经热处(chu)理(li)的(de)无(wu)纺土工(gong)布(ꦚbu)(bu)。从生产加工(gong)方便(bian)考(kao)虑，单块排(pai)(pai)水(shui)(shui)(shui)垫(dian)(dian)宽(kuan)度为(wei)(wei)2m(中间三维(wei)(wei)垫(dian)(dian)的(de)宽(kuan)度为(wei)(wei)1.9m，两边(bian)双层无(wu)纺布(bu)(bu))长(zhang)度根据设计坡长(zhang)加上一定(ding)的(de)富余量确(que)定(ding)。