How to strengthen coal quality management in coal mine production site

1. Controlling roof accidents is an important content to reduce current coal mine safety accidents. Therefore, it is necessary to strengthen safety technical training, strictly implement on-site management responsibilities, effectively strengthen coal mine roof management, and ensure the safe development of the coal industry. 1. Strengthen training and improve management skills. Improving the awareness and skills of roof management of coal mine employees is the premise of preventing and reducing roof accidents. Industry management departments should hire coal mine roof management experts, conduct a training for all coal mine safety technical management personnel and coal mining captains and team leaders, comprehensively analyze the difficulties and key points of coal mine roof management, scientifically analyze typical roof accidents, and put forward ideas and methods for doing a good job in coal mine roof management around studying the law of coal mine roof movement, strengthening mine pressure monitoring and forecasting, improving support quality, strengthening on-site management, and relying on scientific and technological progress to promote management. 2. Promote reform and eliminate backward methods. Combined with resource integration, standardization construction and post-disaster reconstruction of coal mines, we thoroughly implemented the Guiding Opinions on Basic Management of Small Coal Mines, comprehensively promoted the standardization construction of coal mine safety and quality, urged all coal mines to learn from and learn from successful experiences and practices, and vigorously promoted the reform of mine supporting materials. It is necessary to fully adopt metal pillar support in all coal mining faces, cancel the technical renovation and expansion of mine roadway and prepare wood support in roadway, actively promote rock roadway bolting and shotcreting (anchor net) support and coal roadway bolt support technology, and require single hydraulic support and friction support in wall coal mining faces to realize the support material reform of "replacing wood with steel". For mined-out areas with long-term exposed roof, the situation of weak roof management in coal mines has been completely changed by using manual blasting to force roof caving and pressure relief, popularizing new technologies, new processes and new materials for roof support, and popularizing mining mechanization and support technologies such as anchor rod, anchor cable, anchor net and bolting and shotcreting. 3. Strictly control the pass and strengthen on-site management. The first is technical specifications. Coal mine engineers and technicians should strictly follow the relevant policies and norms and be practical when formulating technical measures and mining plans, and cannot copy the technical norms of other coal mines. Actively explore the design scheme suitable for the geological conditions of this mine and beneficial to roof management, so as to reduce the possibility of roof accidents from the source. Temporary and permanent support measures must also be clearly defined in the roadway with no obvious signs of falling off, and the programming should not be shoddy. The second is the approval and study of laws and regulations. According to geological data and ground pressure observation data, the mining operation rules of each mining face should be compiled, so that the rules can truly guide production and ensure safety; Strictly implement the "three prohibitions" system with unclear geological structure, unclear roof management measures and no targeted measures, reasonably arrange shifts, ensure blasting support immediately after excavation, and eliminate roof caving factors in time. It is necessary to organize cadres and workers to seriously study the "three major regulations" so that everyone can understand and master them. The third is the engineering quality. The quality of mining engineering is the basis of roof management, and each single project in coal mine must be constructed in strict accordance with the operating rules of single project. It is necessary to strictly control the support quality, and the safety supervisor shall conduct safety inspection on the support quality of each coal mining face, and implement dynamic management to ensure that the project quality is unqualified and not accepted. The fourth is the first and staged pressure. First weighting and periodic weighting are easy to cause large roof caving accidents. It is necessary to explore and master the weighting interval, and take strengthening support measures such as adding stakes and cluster columns before weighting to ensure that no accidents occur. Fifth, the roof management of accident-prone locations is closed.