The construction quality control of
composite geomembrane includes the quality control of raw materials and the quality control of the construction process. One is to continuously improve the construction quality inspection rules and regulations, establish a complete quality inspection department, or set up quality inspection personnel.
The second is to implement comprehensive control from raw material input to construction, full process control, and full participation control, gradually decompose each department and its own overall quality objectives, and strictly control the quality of raw materials and products. During the construction process. The key to raw material quality control is the quality inspection and control of raw material input and raw material storage. When raw materials enter the site, strictly check whether the composite geomembrane has a product qualification certificate and related quality inspection reports, carefully observe whether the appearance quality of the raw materials meets the requirements, and randomly select a certain number of total samples for testing of various performance indicators. The raw materials of the certificate or quality inspection report shall not enter the site, and raw materials that have not been randomly inspected shall not be used.
Once the raw materials enter the site, certain storage safeguards must be taken to prevent the raw materials from being damaged or broken. The composite geomembrane should not be exposed to the sun for a long time. Construction process quality control During the construction process, full-time personnel should be assigned to inspect the quality of each process in the construction process, and follow-up and control the construction process to make the quality conform to the design plan. The rural grassroots level should be level and dense, and there should be no hard or sharp stones. In the process of laying composite geomembrane, the key is to check whether the composite geomembrane is flat and loose, whether there are wrinkles, coverings, disconnections, leakage, cracks, etc., and check whether the composite geomembrane is firmly fixed. Whether during construction Are there conditions such as falling, displacement, etc.? The problems encountered must be properly handled to ensure the quality of the construction process.
Make a good construction record. The construction record is the original experimental record of the quality of the construction process, and it is an important part of the project quality assessment. The construction log must be true and detailed, record the construction location, construction time, temperature, average temperature, temperature and other air quality parameters, record the quality of each process during the construction process and the quality of semi-finished products, and record the construction equipment and construction personnel during the construction process And other emergencies. Using composite geomembrane instead of traditional sand filter layer has the advantages of low engineering investment, simple construction and processing technology, less construction equipment, fast construction speed, good filtering characteristics, corrosion resistance, etc.
The composite geomembrane has been successfully applied to the bottom filter drain pipe, slope filter drain pipe, and back filter drain pipe of retaining wall in hydropower and water conservancy projects. It has high marketing and promotional value. When using composite geomembrane, it is necessary to ensure the actual filtering effect of composite geomembrane according to the specific engineering situation, scientific research design plan and careful construction.
