土工膜的鋪設(shè)方法-土工膜廠家教你土工膜的鋪設(shè)焊接施工方法
土工膜的鋪設(shè)方法-土工膜廠家教你土工膜施工土工膜以塑料薄膜作為防滲基材，是一種高分子化學(xué)柔性材料，比重較小，延伸性較強(qiáng)，適應(yīng)變形能力高，耐腐蝕，耐低溫，抗凍性能好，具有較高的抗拉強(qiáng)度和延伸性，同時(shí)，它們對(duì)細(xì)菌和化學(xué)作用有較好的耐侵蝕性，不怕酸、堿、鹽類的侵蝕，在避光使用情況下，使用壽命長(zhǎng)達(dá)70年以上。
HDPE土工膜的鋪設(shè)：
1. 鋪設(shè)HDPE土工膜前應(yīng)由土建工程相應(yīng)的合格驗(yàn)收證明文件。
2. HDPE膜裁切之前，應(yīng)該準(zhǔn)確丈量其相關(guān)尺寸，然后按實(shí)際裁切，一般不宜按圖示尺寸裁切，應(yīng)逐片編號(hào)，詳細(xì)記錄在表格上。
3. 鋪設(shè)HDPE土工膜時(shí)應(yīng)力求焊縫少，在保證質(zhì)量的前提下，盡量節(jié)約原材料。同時(shí)也容易保證質(zhì)量。
4. 膜與膜之間接縫的搭接寬度一般不小于10cm，通常就使焊縫排列方向平行于坡度，即沿坡度方向排列。
5. 通常在拐角及畸形地段，應(yīng)是接縫長(zhǎng)度盡量減短。除特殊要求外，在坡度大于1：6的斜坡上距頂坡或應(yīng)力集中區(qū)域1.5米范圍內(nèi)，盡量不設(shè)焊縫。
6. HDPE土工膜在鋪設(shè)中，應(yīng)避免產(chǎn)生人為褶皺，溫度較低時(shí)，應(yīng)盡量拉緊，鋪平。
7. HDPE土工膜鋪設(shè)完成后，應(yīng)盡量減少在膜面上行走、搬動(dòng)工具等，凡能對(duì)HDPE膜造成危害的物件，均不應(yīng)放在膜上或攜帶在膜上行走，以免對(duì)膜造成意外損傷。
HDPE土工膜錨固方法：
1. 錨固的方法分為三種：溝槽錨固、射釘錨固和膨脹螺栓錨固；通常情況下，采用溝槽錨固。
2. 采用溝槽錨固時(shí)，視HDPE土工膜的使用條件及受力情況，其錨固溝槽寬度一般不小于0.5m-1.0m,其深度不得小于0.5m-1.0m。
3. 采用射釘錨固時(shí)，壓條寬度不小于2cm，厚度不得小于2mm，射釘間距不應(yīng)大于400mm，壓條明露處應(yīng)有防腐措施。
4. 采用膨脹螺栓錨固時(shí)，螺栓直徑不小于4mm，其間距不大于0.5mm，施工時(shí)，先用備好的沙袋將擺好位置的膜臨時(shí)固定，防止大風(fēng)將HDPE土工膜吹動(dòng)移位，然后再進(jìn)行膨脹螺栓錨固。
Geomembrane paving method - geotechnical membrane manufacturers teach you geomembrane
Geomembrane to impervious plastic film as substrate, is a kind of polymer chemistry flexible material, small specific gravity, extension of strong, high adaptability to deformation, corrosion resistance, low temperature resistance, good freeze resistance, high tensile strength and extension, at the same time, their effect on bacterial and chemical action has better corrosion resistance, not afraid of acid, alkali, salt erosion, in the lightof use cases, long service life of 70 years.
HDPE geomembrane laying:
1 HDPE geomembrane laying before the civil engineering a corresponding qualification and acceptance certificate.
2 HDPE film cut before, should measure the correlation dimension, then according to the actual cutting, the general should not be to press the cutting size, should one piece number, recorded in detail in special form.
3 laying HDPE geomembrane should strive to weld the least, under the premise of guaranteeing quality, as far as possible to save raw material. It is also easy to ensure quality.
4 membrane and membrane joints between lap width not less than 10cm, usually make welds arrangement direction parallel to the maximum slope, along the slope direction.
Normally in the corner and deformity of 5 lots, should be the length of the joint to reduce short. Except special requirement, the slope is greater than 1:6 slope away from the top of slope and the stress concentration area within 1.5 meters, as far as possible without weld.
6 HDPE geotechnical membrane in laying, should avoid artificial fold, when the temperature is low, should betaut, paving.
7 HDPE geomembrane laying is completed, should be minimized in the membrane surface running, move tool, that can HDPE membrane damage objects, shall not put in the film or carried in the film walk, so as to avoid accidental injury of membrane.
HDPE geotechnical membrane anchoring method:
1 anchoring method is divided into three kinds: groove anchorage, nail anchoring and expansion bolt;typically, the groove anchorage.
2 the groove anchorage, as HDPE geomembrane using condition and stress condition, the anchoring groove width not less than 0.5m-1.0m, its depth shall not be less than 0.5m-1.0m.
3 the nail anchor, strip width not less than 2cm, thickness shall not be less than 2mm, nail spacing should not be greater than 400mm, Jo Aki dew point is due preservative measures.
4 the expansion bolt, the bolt diameter not less than 4mm, the distance is less than 0.5mm, construction, first with the prepared sandbags to set the position of the membrane temporary fixing, preventing the HDPEgeomembrane wind shift, then expansion bolt.
土工膜的鋪設(shè)方法-土工膜廠家教你土工膜的鋪設(shè)焊接施工方法 。