Types of Textured Surface HDPE Liner
HDPE liner with a textured surface is a kind of liner. Because the rough surface of the textured surface liner has high friction, it can be used in various slope anti-seepage projects. At present, there are two types of textured surface HDPE liner: one-sided textured surface HDPE liner and double-sided textured surface HDPE liner.
One-sided textured surface HDPE liner: it is a liner with a one-sided rough surface and a one-sided smooth surface. In the construction of slope anti-seepage projects, the rough surface is often facing up, so about plays an anti-skid part.
Double-sided textured surface HDPE liner: it is a liner with rough surfaces on both sides. It has a wide range of uses. During the construction of slope seepage prevention projects, both the upper and lower sides of the double rough surface liner can contact the geotextile to prevent slipping.
Choosing a textured HDPE liner depends upon the type of application in which the liner is being used.
Application fields of Textured Surface HDPE Liner
1. Anti-seepage of an artificial lake and municipal engineering.
2. Anti-seepage of agricultural and aquaculture.
3. Seepage prevention of petrochemical and chemical engineering.
4. Anti-seepage of environmental and landfill.
Projects Case Study 1. Textured Surface HDPE Liner for Tailings Storage Project
Specification of HDPE Liner
Color: Black
Surface: One-sided textured surface HDPE liner
Thickness: 1.5mm
Area: 860,000㎡ Project Overview
Industry: Mining
Applications: Tailing ponds
Country: Côte d’Ivoire
Continent: Africa
Located in the Côte d’Ivoire Ivory Coast, Endeavour Mining Corporation’s Ity gold mine has produced more than 1.2 million ounces of gold during its 20-plus years of operation. Previously a heap leach operation, recent near-mine exploration success has increased the resource base and enabled a carbon-in-leach processing plant to be built.
The tailings storage facilities at Ity are constructed using the Downstream method, ensuring that good water management practices are always applied to minimize the size of the supernatant pond in each tailing storage facility.
The project commenced in November 2018 and involved constructing a tailings storage facility lined with a geosynthetic barrier made from a 1.5mm thick high-density polyethylene (HDPE) geomembrane. The facility has a planned impoundment volume of 30.4Mt or 23Mm³ in five years’ time.
This project uses the HDPE liner with a single-sided textured surface liner on the slopes around the structure. HDPE liner is the obvious choice for tailings storage facility projects due to its high resistance to UV exposure, weathering, and harsh chemicals. The HDPE barrier material is also specially formulated to exceed the service life and aftercare period of the mine by at least 50 years.
2. HDPE Liner Cover on Normétal Reactive Tailings Background Information
The underground mine operated between 1937-1975.
> 10 million tonnes of sulfurous ore extracted.
Tailings are stored in three impoundments adjacent to Town Tailings of Norm of Normétal and Desméloizes River.
Initial site restoration conducted in the 1980s: sand cover + revegetation.
Over time, surface erosion + acidic seepage into receiving environment via the Desméloizes River.
In 1998, further reclamation works were required.
In 2004, develop the final restoration concept and supervised the construction activities on-site.
Construction on-site:
1. Clean-up of spilled tailings and flattening of dam slopes.
2. Installation of over 56 ha of HDPE liner: textured surface on dam slopes and smooth surface on impoundment.
3. Placement of clay cover over the liner (0. 3 m on slopes, 0.5 m on the surface).
4. Placement of Riprap on slopes.
5. Revegetation of covered impoundment surfaces and excavated spill areas using residual fertilizing materials.
Construction in 2005-2006:
1. Development of rock quarry and clay borrow pit, both adjacent to the site.
2. Excavation and transport of 146,000 m of 146,000 m3 of spilled tailings.
3. Installation of 2.5 km of toe drains and 4.3 km of ditches for surface drainage.
4. Installation of 17 ha of textured HDPE liner and 37 ha of smooth HDPE liner.
5. Placement of 210,000m3 of clay and 150,000m3 of riprap.
3. 2mm HDPE textured liner for Landfill in the UK
Project Description
Lean Quarry landfill site near Liskeard is an important facility for the residential and commercial waste disposal requirements in Cornwall. It is located in an environmentally sensitive area and therefore subject to close Environment Agency supervision. The site also accepts waste from Devon and this volume of waste meant that additional capacity was required.
The Challenge
A new 45m deep landfill cell was to be developed at the Lean Quarry landfill site using adequate cost-effective geosynthetic materials for this deep application.
The requirement was to design a geosynthetic lining solution that would comprise a composite lining system (GCL and HDPE membranes), geocomposite drainage/protection layer on steep 1 in 2,5 basal side slopes, and drainage stone on the cell base (10/20mm layer below the 20/40mm granite).
The geocomposite drainage/protection layer would be exposed to sunlight for several months until the waste was placed, so must be highly UV stable. In addition, to demonstrate adequate protection of the geomembrane, the geocomposite would need to pass a cylinder test to Environmental Agency standards. Furthermore, the geocomposite must resist long-term compressive creep under the pressure of 45m of waste.
The Solution
Developed a geosynthetic drainage and protection solution that would provide the required puncture resistance and flow capacity to ensure effective geomembrane protection and leachate drainage. The geocomposite drainage layer with enhanced protection and UV resistance was specified and installed on top of the 2mm HDPE textured liner on steep side slopes. The tests confirmed that the compressive creep was less than 20% in 120 years. Environment Agency test results indicated enough puncture resistance and protection performance to achieve the required factor of safety for the 45m deep installation and 1,200kPa pressure (2.5 times service loading).
4. 1.5mm textured HDPE liner Landfill in New York, US
Project name: Hyland Landfill
Location: Angelica, NY
Installation date: August 2007
Challenge
Hyland Landfill Associates managed to secure permits to expand their current landfill operation. The permit allows for future expansion of up to forty acres of landfill capacity. The new construction involved a large excavation for the yearly expansion, construction of a new landfill cell, leachate collection area, and waste-to-energy facility.
Solution
Terrafix installed a multi-layered Geosynthetic barrier system for the new ten-acre cell area and leachate facility. The system contained two layers of 60 mils textured HDPE geomembrane, geocomposite, geosynthetic clay liner (GCL), and geotextile. The new cell was attached to the previous cell. Great care was taken in the construction and field testing to ensure it was as close to leak-free as possible. Currently, the cell is operating well above acceptable levels.
5. 1.5mm Textured HDPE liner for irrigation canal lining in the USA
The Background
The Aberdeen-Springfield Canal Company is one of the oldest canal companies in the United States. It was granted water rights from the Snake River in 1895 after congress passed the Carey Act, also known as the “Desert Lands Act”, in 1894.
The main canals and most of the laterals were completed before 1910 and serviced more than 50,000 acres. Today the Aberdeen Springfield Canal Company services more than 60,000 acres and diverts approximately 325,000 acre-feet of water. The construction of the original canal through sandy gravel soils and fractured basalt has accounted for almost more than half of that water being lost through the system. With the help of grants from the Bureau of Reclamation the Aberdeen Springfield Canal Company has taken proactive steps to conserve water loss through seepage.
The Challenge
Intertape Polymer Group®’s (IPG®) ECP Division was contacted to provide a geomembrane liner that would be durable enough to bridge the rocky canal and have enough friction interaction with the soils, to provide a long-lasting barrier to prevent costly seepage loss through the canal. The liner also had to be installed quickly, as there is a small window between growing seasons and winter months for which the work could be completed.
The canal would have to be reshaped and graded prior to installation of the liner, there is typically a one-month window from the time the water is shut off until winter conditions make working on the site hazardous.
The reshaping and grading of the canal was the most time-consuming portion of the project. It took 15 employees, 2 bulldozers, 5 excavators, 1 front-end loader, and 1 small grader less than 20 days to have the canal prepared and ready for the installation of the liner.
The Solution
The textured HDPE liner was chosen as the best product for which the Canal Company could achieve superior results under such difficult conditions.
The HDPE geomembrane is textured on one side to provide the largest soil interaction with the liner. Since the liner was to be buried under the existing rocky soils, a dependable, strong liner with high soil interaction was needed.
Reducing the seepage loss and extending the life of the canal was the goal and the Aberdeen-Springfield Canal Company is looking to conserve more than 75 CFS (approx. 30,000 acre-feet of water) per year with this project. The AberdeenSpringfield Canal Company and IPG have taken a monumental step forward to conserving the precious water resources in the Snake River Valley.
As the leading geomembrane manufacturer, supplier, and wholesaler, Our quality satisfies the ASTM GRI-GM13 standard. Besides, we have obtained CE, ISO9001, ISO14001, and ISO45001 certificates. Our customer projects include aquaculture (fish ponds, shrimp ponds), water conservancy (canals, dam), environmental protection (landfill sites, sewage treatment), mining (heap leaching ponds, tailings), agriculture (water reservoirs), and many other projects, customer satisfaction is 100%.
