en.Wedoany.com Report, On March 26-27, the Fourth Mining Safety Conference and the Second China Green Intelligent Backfill Mining Conference were held in Changsha, Hunan Province, China. The conference was jointly organized by the Green Intelligent Mining Platform, the Green Intelligent Mining Branch of the China Mechanical and Electrical Products Circulation Association, and MCC Changtian International Engineering Co., Ltd. Participants engaged in in-depth discussions on core topics such as cutting-edge technologies for mine safety prevention and control, the latest achievements in green intelligent backfill mining, and collaborative innovation among industry, academia, research, and application. The aim was to explore targeted, practical, and implementable pathways for the transformation and upgrading of the mining industry and its high-quality development during the "15th Five-Year Plan" period.
Anchoring the Development Direction, Building Consensus for Industry Transformation
Currently, China's mining industry is facing a new situation characterized by multiple overlapping challenges and opportunities: shallow resources are increasingly depleted, deep mining has become the industry norm, and under conditions of high stress, strong disturbance, and complex geology, the difficulty of disaster prevention and control has significantly increased. At the same time, ecological and environmental protection constraints continue to tighten, and the "dual carbon" goals are being advanced, placing higher demands on the green development of the mining industry. How to achieve efficient resource development while adhering to the bottom line of safety has become a critical issue urgently needing resolution for the industry.
Zhang Likuan, President of the Green Intelligent Mining Branch of the China Mechanical and Electrical Products Circulation Association, stated at the opening ceremony that mining, as a fundamental industry of the national economy, plays a crucial supporting role in ensuring China's resource security and promoting green, low-carbon development through its safe, green, and intelligent development. This conference closely follows the pulse of the times and addresses industry concerns, aiming to pool wisdom and strength for the high-quality development of the mining industry during the "15th Five-Year Plan" period.
Jiang Jiangchen, Chief Engineer of the Mining Company of MCC Changtian International Engineering Co., Ltd., emphasized in his speech that backfill mining technology is a key link connecting safe mining and green development. It is not only a core means of controlling strata movement, preventing surface subsidence, and ensuring mining safety but also an important tool for utilizing solid waste resources such as tailings and waste rock and reducing environmental disturbance. With the deep empowerment of new-generation information technologies such as big data, artificial intelligence, and the Internet of Things, backfill mining is accelerating towards a new stage of "intelligent perception—precise control—remote decision-making." In recent years, China has made significant progress in areas such as paste backfill, high-concentration backfill, and intelligent backfill system integration, with a number of demonstration mines leading the industry.
Participants unanimously agreed that mining development has shifted from being "scale-driven" to "quality-driven." Safety is an insurmountable lifeline, green is a development direction that must be adhered to, and intelligence is a key path to improving quality and efficiency. The coordinated advancement of these three aspects is not only the core essence of the mining industry's transformation and upgrading but also an important lever for building a modern mining industry system and cultivating new quality productive forces.
Tackling Key Technologies, Solidifying the Foundation for Safety and Green Development
In the areas of resource extraction and safety governance, technological innovation has become a key lever for addressing industry pain points and enhancing development quality and efficiency. At the conference, several experts and enterprise representatives shared relevant technological achievements, providing clear ideas for safe, efficient, and green, low-carbon development in mining.
Addressing the industry challenge of recovering remnant ore (pillar) resources, Professor Zhang Qinli from Central South University systematically outlined the characteristics of remnant ore, which typically has "relatively high grade but is scattered, small-scale, irregularly shaped, and suffers from poor stability due to the influence of surrounding stope mining." For different recovery scenarios, such as replacing point pillars within stopes, recovering local stope crown pillars and inter-pillars, and recovering large-scale panel pillars and triangular pillars in thick ore bodies, he proposed targeted technical approaches. He particularly emphasized that remnant ore recovery is difficult and high-risk, and should not be simply integrated into normal production plans. It should serve as a production supplement, balancing safety, technical feasibility, and economic viability to achieve an organic balance between resource recovery and risk control.
In the field of resource utilization of coal mine solid waste, Geng Huafeng, Deputy Director of the China Engineering Research Center for Coal Mine Backfill Mining, shared insights on core technologies such as continuous mining and continuous backfilling, and separated-bed grouting. He proposed that improving the efficiency of backfill mining runs through multiple specialties and links including mining, excavation, machinery, transportation, and ventilation, requiring holistic consideration of process innovation, equipment upgrades, operational stability, and material compatibility. The utilization of coal gangue should also move beyond the single mode of backfilling for disposal, expanding its application space to scenarios such as construction, agriculture, and industry. This opens up new ideas and pathways for the "four-in-one" ecological application of coal mine solid waste, truly turning waste into treasure.
The digital and intelligent transformation of mine safety governance became a hot topic at the conference. Wang Jinyang, Chairman of Longyan Long'an Safety Technology Co., Ltd., proposed the "Golden Triangle Safety Management System." Based on the core understanding that "the essence of accidents is uncontrolled energy + barrier failure," the system builds three intelligent pillars: "Intelligent Prevention First, Dual Control as the Brain, and Shaping and Cultivating as the Soul." By establishing "digital barriers" such as end-point visual operation management and AI intelligent monitoring, the system enables the digital presentation of risks and hidden dangers. Relying on "one map for risks and hidden dangers, one card for job performance," it promotes the informatization of the dual prevention mechanism. Combined with a closed-loop training model involving online learning, on-site assessment, and offline VR practical training, it strengthens personnel safety literacy and drives the transformation of mine safety governance from passive response to active prevention.
Innovating Equipment Systems, Promoting Technology Application
If safety is the lifeline of mining development, then technological and equipment innovation is the crucial support for fortifying this lifeline. At the conference, several companies showcased complete sets of technical equipment and scenario-based solutions, demonstrating the trend of China's mining equipment evolving from single-point breakthroughs to system integration and from engineering practice to standard leadership. This provides solid assurance for the practical application of green intelligent backfill mining technologies.
Feiyi Co., Ltd. has been deeply engaged in the field of mine solid waste paste backfilling for many years, forming a full-industry-chain solution covering technology R&D, cementitious materials, complete equipment, operation management, and full lifecycle services. The company has participated in the formulation of several Chinese standards, and its related technologies and equipment have been applied in over 600 domestic and international projects.
Yantai Jereh Machinery Equipment Co., Ltd. introduced a new tailings backfilling technology called "Three Skids Make a Station." Relying on the backfill pump skid, backfill mixing skid, and integrated control center skid, it forms a modularized complete solution with advantages such as rapid station setup, high mobility, and small footprint. Among them, the "Triple Continuous Mixing Technology" not only enhances the strength of the backfill body but also effectively reduces cement consumption, achieving a unity of green and economic benefits.
Addressing mine water hazard safety issues, Hunan Baiyin Grouting Waterproof Engineering Co., Ltd. brought key technologies for treating difficult water leakage in shafts and tunnels. The company has formed a distinctive technical system for managing water leakage when passing through aquifers, quicksand layers, fault fracture zones, and mined-out areas. Its cases cover various mines including coal, gold, copper, iron, lead-zinc, phosphate, and potash salt mines, providing reliable technical support for safe production under complex geological conditions.
The conference also featured an enterprise exhibition area, which showcased the latest technological equipment in fields such as mine safety prevention and control, green backfill mining, and solid waste resource utilization. This established an efficient platform for technology exchange and achievement matching, facilitating the efficient flow of technology, equipment, talent, and other factors. Participants unanimously agreed that facing the trend of deeper, more complex, greener, and more intelligent mining development, it is essential to maintain a problem-oriented approach, strengthen collaborative innovation, and promote the effective implementation of technologies. The concept of "Safety as the Foundation, Green Empowerment, and Intelligent Leadership" must be genuinely translated into practical results at mine sites. By systematically reshaping safety governance concepts, green mining pathways, intelligent equipment systems, and industrial collaboration mechanisms, the mining industry can advance towards a new stage of higher quality and more sustainable development.
