Protection And Utilization of Mining Water Area Resources

Adhering to the integrated concept of mine water management, protection, and utilization for a long time, we first effectively protect the surface and underground water resources of the mining area from the source through advanced regional treatment, curtain interception, and grouting water-blocking technology, and then pollute the residual water entering the mine. After disposal, it will be used as water for production and domestic use in the mining area. Finally, the mine water that is still surplus and needs to be discharged will be recharged and sealed in deep wells to achieve integrated treatment of mine water management, conservation, and use, and achieve the goal of "zero discharge" of mine water.

1. Development and utilization of water resources in joint mines above and below the mine

Based on the concept of "combination of treatment and protection, a combination of treatment and utilization", we have developed and constructed a modular process for the short-process enhanced treatment of mine water underground and developed a multi-stage nanofiltration moderate purification process on the ground to form a technology and process system for the development and utilization of mine water resources both above and below the mine.

Combined Water Resources Utilization System Above and Below the Well

2. Mine water deep well recharge

By selecting the target layer for deep well recharge, using vertical or horizontal deep well drilling to fracture the deep low-permeability sandstone layer, high-pressure injection of pretreated mine water into the target layer, and studying and evaluating the impact of long-term recharge on groundwater evolution and the environment.

Two Types of Deep Recharge Wells

3. Integration of mine water control, maintenance, and use

Relying on the outstanding advantages of coal mine water hazard prevention, environmental protection, and governance industries, a full-process integrated water prevention and control technical service system has been formed to achieve a win-win and coordinated development of green mining, coal, and water.

3.1 Advanced treatment technology for coal seam floor water damage areas

Key technologies for advanced regional control of coal seam floor water damage have been developed, forming the "five major transformations" from local control to regional control, which have been written into the "Detailed Rules for Water Prevention and Control in Coal Mines".

Principle Diagram of Advanced Regional Governance Technology

3.2 Large curtain water damage control technology

The technology and equipment system for underground diaphragm wall curtains, fire area curtains, and loose sand layer-weakly cemented mixed media curtains in open-pit mines has been formed. "Using curtain grouting and water-retaining coal mining technology" was written into the first water-retaining coal mining standard.

Schematic Diagram of the Concealed Suspended Semi-Enclosed Water Interception Curtain in Zhuxianzhuang Coal Mine

3.3 Water resources protection and utilization technology in mining areas

Research and develop large-scale, low-cost mine water treatment technology, underground storage, storage, and optimal allocation technology, integrate online monitoring and intelligent early warning systems, and realize the intelligent protection and utilization of mine water resources from "source to process to terminal".

Mine Water Transfer, Storage, and Quality Utilization Technology

3.4 Coal gangue filling and disposal and associated water damage collaborative prevention and control technology

In aspects such as coal gangue slurry filling rules, long-distance pumping technology, and "crushing-preparation-preparation-filling" integrated drilling and injection equipment in the goaf area, forming a coordinated prevention of coal gangue filling and disposal and associated water damage. Control key technologies.

Coal Gangue Filling and Disposal and Associated Water Damage Collaborative Prevention and Control Technology