贵阳土工布浅谈防水土工布怎么施工-k8凯发

贵阳土工布浅谈防水土工布怎么施工

how to construct waterproof geotextiles in guiyang geotextiles

复合土工膜的接缝处理是一个关键工序，直接影响防渗效果。

the joint treatment of composite geomembrane is a key process, which directly affects the effect of seepage prevention.

一般接缝方式有：

the general seams are:

①搭接：搭接宽度宜大于15cm；

(1) lap: the width of lap should be greater than 15cm;

②热焊：宜于稍厚的土工膜基材，焊缝搭接宽度不小于5cm(不推荐胶接，长时间水浸泡易开胶，防渗效果差)。

the heat welding: geomembrane material is thicker, the lap width not less than 5cm (not recommended adhesive, long time soaking water easy to open, anti-seepage effect difference).

防水土工布施工：

waterproof geotextile construction:

1.底部防渗土工膜（铺规格300g/0.5mm/㎡两布一膜pe防水土工布）铺设顺序为从下游向上游，由基坑一岸向另一岸铺设；

1. the bottom of geomembrane (300g/0.5mm/ two square meters shop size cloth membrane pe waterproof geotextile) laying order from downstream to upstream, laying a foundation from the shore to the other shore;

2.基坑侧面防渗土工膜铺设顺序为从上向下，由边坡底向边坡顶铺设；土工膜的连接采用土工膜专用焊接机焊接法（焊接机焊接两道，搭接不小于10cm）；

2., the laying order of the anti seepage geomembrane on the foundation pit is from top to bottom, from the bottom of the slope to the top of the slope. the connection of the geomembrane is geomembrane welder welding method (the welding machine is welded two ways, and the lap is no less than 10cm).

3. 防渗土工膜施工程序：底及边坡土方修整并验收合格→土工膜铺设、剪裁→对正、搭齐→搭接施工→检测→修补→复检→验收→30mm水泥砂浆。

3., the construction procedure of anti seepage geomembrane: bottom and slope earthwork dressing and acceptance qualification, geomembrane laying, tailoring, alignment, lap up, lap construction, inspection, repair, inspection, inspection, acceptance, 30mm cement mortar.

防水土工布施工工艺，底材必须坚固、平整、干净，无灰尘、油腻、蜡、脱模剂等以及其它碎屑物质；基面有孔隙、裂缝、不平等缺陷的，须预先用水泥砂浆修补抹平，伸缩缝建议粘贴塑胶条，节点须加一层无纺布，管口填充建议使用雷邦仕管口灌浆料填充；·阴阳角处应抹成圆弧形（或v字型）；·确保基面充分湿润，但无明水；新浇注的混凝土面（包括抹灰面）在施工前应让其干固完全。

waterproof geotextile construction technology, the surface must be firm, smooth, clean, no dust, grease, wax, release agent and other debris; surface with pores and fractures, inequality defects, must advance repair with cement mortar smeared, expansion joint proposal paste plastic strip, the node must be added a layer of non-woven fabric. mouth filling recommended leibangshi orifice grout filling; yin and yang angle should be put into a circular shape (or "v"); and to ensure the surface fully wet, but not out of water; the new pouring concrete surface (including plastering) before construction should be allowed to dry completely.

k8凯发-凯发app建议在施工中，首先要用料径较小的砂土或粘土找平基面，然后再铺设土工膜。土工膜不要绷得太紧，两端埋入土体部分呈波纹状，最后在所铺的土工膜上用细砂或粘土铺一层10cm左右过度层。砌上20-30cm块石（或砼预制块）作防冲保护层。施工时，应尽力避免石块直接砸在土工膜上，最好是边铺膜边进行保护层的施工。复合土工膜与周边结构物连接应采用膨胀螺栓和钢板压条锚固，连接部位要涂刷乳化沥青（厚2mm）粘接，以防该处发生渗漏。

guiyang geotextiles suggest that in the construction, first of all, the base surface should be leveled with sand or clay with smaller diameter, and then the geomembrane is laid. geomembrane notstretched too tight ends embedded in soil section corrugated, finally paving geomembrane with fine sand or clay layer about 10cm transition layer. the 20-30cm block stone (or concrete precast block) is built as the protection layer. in the course of construction, we should try to avoid the stone on the geomembrane directly. it is better to carry out the construction of the protective layer at the edge of the membrane. the connection between composite geomembrane and surrounding structures should be anchored with expansion bolts and steel strips. the connection area should be brushed with emulsified asphalt (thick 2mm) to prevent leakage.