Mine Backfilling Ecological Restoration

Technical Background:

Over the centuries, mining activities have provided critical resource support for global economic development. However, this process has caused severe ecological damage.

Key Technical Components:

1. Modified Phosphogypsum Backfilling Technology

Modified phosphogypsum, with improved physical and chemical properties, serves as an alternative to traditional mine backfill materials. In mine reclamation and ecological restoration projects, it functions as a substrate material for vegetation planting, enabling greening and ecosystem recovery. The modified phosphogypsum restoration model offers multiple advantages:

High remediation efficiency

Low risk of secondary geological disasters

Short ecosystem reconstruction period

Rich soil fertility and biodiversity

This technology resolves contradictions between material scarcity for ecological restoration and new issues caused by conventional backfilling, addressing phosphogypsum resource reuse from the source. It enables rapid in-situ ecological restoration and land rehabilitation of abandoned mine pits, elevating mine environmental protection standards while providing innovative solutions for phosphogypsum stack utilization and mine pit restoration in the phosphorus chemical industry.

2. Ecology + Photovoltaic Integration

By utilizing idle land such as mining subsidence areas and open-pit dump sites, this approach combines mine remediation with solar power generation. The "solar-on-top, ecology-below" model achieves:

Land vertical utilization

Effective control of soil erosion and vegetation stabilization

Clean energy production (reducing standard coal consumption and CO₂/SO₂ emissions annually)

Integrating photovoltaic systems with mine ecological governance optimizes land use, stabilizes geological environments, enables damaged land reclamation, and improves ecological functions—a multi-win solution.

3. Ecology + Agriculture Synergy

Post-restoration land reclamation directly impacts ecological restoration outcomes and project cost-effectiveness. Common challenges include insufficient soil volume, nutrient deficiency, and poor adaptability, often leading to suboptimal short-term greening results. Scientifically, leveraging plant traits for soil improvement represents the most cost-effective and sustainable approach.

Strategic plant selection maximizes restoration efficiency while balancing ecological, economic, and long-term sustainability goals, forming an integral part of the full-chain ecological restoration industry.