复合土工膜防渗施工方案

2021年2月9日发(作者：vampires)

复合土工膜防渗施工方案

compound geomembrane anti-seepage

construction plan

1.0

项目简介

:

1.0 project introduce:

基于环境保 护的目的，

业主拟采用先进的技术工艺，

使铺设在

100m

×

100m

×

1.5m

的蒸发池池底和池侧的复合土工膜形成一扇完全封闭且质量 优良的防渗漏墙，

以阻止蒸发池内的含油物质进入到蒸发池外的自然环境中。

< p>

2.0

施工方案

2.1

复合土工膜施工工艺原理

2.1 composite geomembrane construction technology principle

复合土工膜是 一种土工合成材料，具有较好的防渗效果，一方面将复合土工膜

铺设在需要进行防渗处理 堤段坡面上，

利用自身的连接形成一整体坡面防渗体，

另一方面 使坡面铺设的复合土工膜的下部与坡脚垂直防渗墙进行连接，使复合

土工膜与坡脚防渗墙 形成一整体，另外，复合土工膜上部与压顶路肩梁相接，

使堤基防渗墙，坡面复合土工膜 ，堤顶压顶砼形成一个整体完全封闭的防渗体

系。

Composite

geomembrane

is

a

kind

of

geosynthetic

materials,

good

anti-seepage

effect, on the one hand, the composite geomembrane laid side slope in some seepage

prevention

treatment

is

required

to

use

their

connections

to

form

a

whole

slope

seepage prevention body, on the other hand to make the bottom of the slope surface

of

composite

geomembrane

laid

connection

with

slope

toe

vertical

cut-off

wall,

composite geomembrane

and

slope

foot

cut-off

wall

to

form

a

whole,

in

addition,

composite geomembrane upside and coping shoulder beam, the cut-off wall in the

dam

foundation

and

slope

of

composite

geomembrane,

new

coping

completely

closed anti- seepage concrete forming a whole system.

2.2

复合土工膜施工工艺流程

2.2 composite geomembrane construction process

在复合土工膜铺设前，大堤迎水面土方填筑 及坡面修整完毕，坡面平整度、压

实度均达到设计要求并经监理工程师验收合格后方可进 行复合土工膜的铺设，

本工程复合土工膜铺设的工艺流程包含但不限于下述内容：

Before composite geomembrane laying, levee meet the earthwork filling and slope

surface

dressing,

slope

surface

roughness,

degree

of

compaction

shall

meet

the

design requirements and the supervision engineer acceptance rear can for composite

geomembrane

laid,

composite

geomembrane

laid

the

technological

process

of

this

project included (not limited) as follows :

---

蒸发池池底平整压实与检查

---

蒸发池堤岸平整压实与检查

---

土工膜材料检查

---

土工膜场外拼接

---

土工膜铺设

---

土工膜施工拼接

---

修补与处理

---

锚固沟开挖

---

土工膜锚固施工

---

保护层施工

---

交工验收

2.3

蒸发池土建施工：

2.3.1

蒸发池池底平整压实

采用压路机对池底进行压实，普氏测试压实度达到

85%

< p>
，并及时平整压实中对

土工膜产生不利影响的地方。

2.3.2

蒸发池堤岸平整压实

采用压路机对蒸发池堤岸进行压实，普氏测试压实度达到

85%

，并及时平整压

实中对土工膜产生不利影响的地方。同时按业主 要求保证土壤的质量要求，使

堤岸倾斜度为

1

< br>：

2.

2.3.3

堤坡的清理 、平整场地，清除一切尖角杂物，欠坡回填夯实、富坡削坡挖

平后经监理验收合格，为复 合土工膜铺设提供工作面。

2.3.3 clean up of dike slope and flat field, remove all sharp corners, owe rich backfill

compaction of the slope, slope cutting slope dig flat after supervision acceptance, for

composite geomembrane laying face.

2.4

复合土工膜施工

2.4composite geomembrane construction

2.4.1

复合土工膜材料检查

2.4.1.1

相关文件检查

本工程所用复合土工膜为一布一膜 针刺复合土工膜，是国家经贸委公布重点土

工合成材料生产企业

');

企业，湖南湘维有限公司生产产品，使用前委托南京

水利 科学研究院实验中心对产品的各项技术指标进行检测，各项指标均符合标

准规定和设计要 求。

2.4.1.1

composite

geomembrane

materials

quality

testing

this

project

used

composite

geomembrane to two cloth membrane composite geomembrane, is published by the

state

economic

and

trade

commission

key

geosynthetic

materials

production

enterprises');

nanjing before use water conservancy science research institute technical indicators

of

experimental

center

of

product

testing,

the

indicators

are

in

line

with

the

prescribed standards and design requirements.

2.4.1.2

厚度尺寸检查

利用检查设备和仪器对土工膜的幅宽、长度和厚度进行检查。使用材料规格数

< br>量如下：

---liner:14000m

< p>
2

HDPE,thk:1mm;

---bottom layer:200gr/cm

2

geotextile.

2.4.2

土工膜场外拼接

为了施 工方便，

保证拼接质量，

复合土工膜应尽量采用宽幅，

减少现场拼接量，

施工前应根据复合土工膜幅宽、现场长度需要，在厂内 剪裁，并拼接成合符要

求尺寸的块体，卷在钢管上，人工搬运到工作面铺设。

< p>

2.4.2

geomembrane

field

joining

together

in

order

to

convenient

for

construction,

ensure the quality of stitching, composite geomembrane breadth should be adopted

as far as possible, decrease the scene splicing, before construction should according

to the requirements of the composite geomembrane width, length, cut in the factory,

and

spliced

into

the

required

size

of

the

block,

to

roll

on

the

steel

pipe,

manual

handling to the face.

2.4.3

复合土工膜的铺设

2.4.3 the laying of composite geomembrane

2.4.3.1

复合土工膜的铺设方法

2.4.3.1the composite geomembrane laying method

复合土工膜铺设分齿槽坡脚平台铺设、坡面铺 设两个部分，齿槽坡脚平台铺设

结构形式见大样图

A

< p>
，该项工程应在堤基垂直防渗墙施工结束，齿槽开挖符合

要求，坡脚平台验 收合格后进行。铺设方法：沿防渗墙轴线方向水平滚铺。坡

面铺设在坡面验收合格后，从 堤顶向堤脚沿垂直于堤轴线方向缓慢展铺到坡脚

处与坡脚平台铺设丁字形相接。

Composite

geomembrane

laid

the

cogging,

slope,

slope

toe

platform

laid

laid

two

parts,

tooth

trough

slope

toe

platform

laying

structure

see

details

A,

the

project

should be at the end of the vertical cut-off wall construction in the dam foundation,

the tooth

groove

excavation

conforms

to

the

requirements,

after

the

acceptance

of

the slope

toe platform.

Laid

method:

along the

axis direction

of

horizontal

cut-off

wall. Upon the acceptance of spread in slope, slope toe from new slowly along the

direction perpendicular to the axis of the dike exhibition shop to the slope and slope

toe platform laid into the crowd.

2.4.3.2

复合土工膜的铺设技 术要求

2.4.3.2 composite geomembrane laying technology requirements

铺设应在干燥和暖天气进行，为了 便于拼接，防止应力集中，复合土工膜铺设

采用波浪形松驰方式，富余度约为

< p>
1.5%

，摊开后及时拉平，拉开，要求复合土

工 膜与坡面吻合平整，无突起褶皱，施工人员应穿平底布鞋或软胶鞋，严禁穿

钉鞋，以免踩 坏土工膜，施工时如发现土工膜损坏，应及时修补。

Laid shall be carried out in a dry and warm weather, in order to facilitate splicing,

prevent stress concentration, composite geomembrane laying adopts wavy relaxation

method,

degree

of

surplus

is

about

1.5%,

spread

out

in

a

timely

manner

after

flattening,

and

required

composite

geomembrane

with

slope

surface

level

off,

without ridges fold, construction personnel should wear cloth shoes with flat or soft

rubber

shoes,

it

is

forbidden

to

wear

cleats,

in

order

to

avoid

stepping

on

geomembrane, if discover geomembrane during construction, should be repaired in a

timely manner.

2.4.4

复合土工膜施工拼接