Geomembrane plays a vital role in tailings ponds, mainly in terms of anti-seepage, improving dam stability, environmental protection and economy. The following is a detailed introduction:
Anti-seepage isolation
Principle: Geomembrane has good anti-seepage performance. After being laid on the bottom and sides of the tailings pond, it can form a complete anti-seepage layer, effectively blocking the contact between tailings water and external water bodies, and preventing tailings water leakage.
Application scenario: Laying geomembranes at the bottom and slopes of tailings ponds can prevent harmful substances such as waste residues and wastewater in tailings water from penetrating into groundwater and soil, and protect the safety of the surrounding environment. For example, in some metal mine tailings ponds, after using geomembranes, the leakage of tailings water has been greatly reduced, effectively reducing the risk of pollution to surrounding groundwater.
Improve dam stability
Principle: Leakage of tailings water in tailings ponds may increase the water content of the soil inside the dam body and reduce the strength of the soil body, thereby causing dam damage and safety hazards. The anti-seepage effect of geomembranes can reduce leakage and maintain the stability of the soil inside the dam body.
Application scenarios: In the construction and reinforcement of tailings dams, laying geomembranes can enhance the integrity and stability of the dam body and reduce the occurrence of accidents such as landslides and collapses of the dam body caused by leakage.
Environmental benefits
Principle: The use of geomembranes can prevent harmful substances in tailings from spreading to the surrounding environment, protect water sources and soil resources, and meet environmental protection requirements.
Application scenarios: With increasingly stringent environmental protection requirements, many mining companies use geomembranes to prevent seepage in tailings ponds to reduce negative impacts on the environment and establish a good corporate image.
Economic efficiency
Convenient construction: Geomembranes are easy to construct and highly efficient, which can greatly reduce the construction cost of tailings ponds. It is light in weight, flexible, easy to transport and lay, and can adapt to various terrains.
Low maintenance cost: Geomembranes have a long service life and good durability, can adapt to various complex geological conditions and environmental requirements, and reduce later maintenance costs.
Resource conservation: By preventing tailings water leakage, water waste can be reduced. At the same time, tailings water can be recycled and reused after being clarified in the reservoir, saving water resources.