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对于HDPE土工膜的详细铺设您掌握多少?专业厂家为您解答

HDPE土工膜的详细铺设您掌握多少?

HDPE土工膜进行切割之前应该准确丈量其相关尺寸然后按实际裁切,一般不宜按图示尺寸裁切,应逐片编号,详细记录在专用表格上。铺设HDPE土工膜时应力求焊缝少,在保证质量的前提下尽量节约原材料,同时也容易保证质量。

HDPE土工膜的膜与膜之间接缝的搭接宽度一般不小于10cm,通常就使焊缝排列方向平行于较大坡度,即沿坡度方向排列,通常在拐角及畸形地段,接缝长度尽量减短。除特殊要求外在坡度大于1:6的斜坡上距顶坡或应力集中区域1.5米范围内,尽量不设焊缝。

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渗滤液导排层一般选用卵石或碎石等材料,厚度不应小于30cm,由于垃圾填埋区面积大,碎石摊铺的工程量非常大,如何解决在HDPE土工膜上碎石运输、摊铺过程中而防止产生破坏HDPE土工膜的问题非常关键。在本工程中经过多次现场试验,采用分区施工的作业方式,以每铺设4片膜作为一个作业单元,在HDPE土工膜上铺设5mm厚钢板作为材料运输通道,按一定间距铺设1.5米厚度以上的碎石便道,然后在便道上使用挖掘机由里到外摊铺碎石。通过防渗漏检测,这种施工措施对HDPE土工膜保护效果较好,少损坏HDPE土工膜