Deep Gold Ore Body Mining Technology Process

Facing the complex challenges of deep gold mining, how can we safely and efficiently recover valuable resources in high-risk geological environments? This demands we transcend traditional methods through scientific technology comparison and innovative application.

Deep ore bodies typically lie buried below 800 meters underground, accompanied by high pressure, high temperature, and complex faults. Mining operations confront multiple risks including rock bursts, ground pressure control, and ventilation safety. Therefore, the selection of mining methods directly determines operational safety and economic efficiency. Taking a deep gold mine in North China as an example, a comprehensive technical and economic comparison was conducted between the upward-level point-column non-cemented backfill method, the upward-level layered cemented backfill method, and the pre-controlled roof segmental post-backfill method. Ultimately, the pre-controlled roof segmental post-backfill method emerged as the preferred solution due to its significant advantages.

This innovative approach optimizes the mining field structure, reducing excavation volume by approximately 50%. It also employs medium-to-deep hole caving techniques to substantially boost production efficiency. The key lies in its seamless integration of staged mining and subsequent cemented backfilling: safely extracting the mining room first, followed by efficient extraction of the mining pillar, and immediately implementing high-strength backfilling. This effectively controls ground pressure and ensures mining field stability. Industrial trial data demonstrates that this method maintains both mining dilution and loss rates at approximately 10% while increasing ore recovery by 5%, generating substantial economic value for the mine.

Xinhai Mining deeply understands the complexity and systemic nature of deep mining. We not only provide proven advanced mining methods but also emphasize the full integration of technologies—from rock mechanics analysis and 3D laser scanning modeling to microseismic monitoring. This delivers customized, comprehensive solutions for deep resource development, encompassing design planning, critical equipment, and intelligent management systems. We empower clients to maximize extraction and optimize benefits from deep gold resources while ensuring operational safety.