1.Strictly implement the safety responsibilities of the leaders in charge of coal mines and all departments. Coal mining enterprises should clarify the leadership in charge of coal bunker safety management and the specific lead management department, mechanical and electrical management, production technology, safety supervision, general defense, scheduling and other departments are responsible for the division of labor, and should respectively clarify the safety management responsibility and safety responsibility of each coal bunker specific user.
2.Improve and improve the system. Coal mining enterprises shall establish and improve the management system of coal bunkers, including design, construction, safety management, daily inspection, overhaul and maintenance, risk identification, hidden danger investigation, emergency response, supervision and inspection, prevention of silo blockage, decommissioning and reuse management, etc., and carry out regular safety inspections.
3.Innovative silo design. In strict accordance with the requirements of the coal mine design specifications, according to the characteristics of the surrounding rock and the reasonable design of the coal bunker capacity, the engineering design innovation is carried out from the aspects of coal bunker shape, masonry method and material use, application of wear-resistant and anti-hanging wall materials on the silo wall, reserved coal bunker discharge holes, preset cleaning and dredging devices, etc., so as to enhance the anti-blocking and anti-collapse capabilities.
4.Improvement of the storage system and equipment. The coal chamber or the operating table should keep a sufficient safety distance from the lower mouth of the coal bunker or take reliable isolation measures from the coal outlet, and it is strictly forbidden to place it directly at the lower mouth of the coal bunker, and the inclined roadway should be arranged in the direction of the roadway uphill. Promote the application of remote control technology of the anti-collapse gate of the coal bunker or coal feeding device and the coal feeder at the bottom of the coal bunker to achieve unattended.
5.Accelerate the research and development and application of unmanned clearance and dredging technology and equipment. Accelerate the R&D and application of daily cleaning of coal bunkers and silo plugging and dredging robots, implement mechanization and robotization transformation, and realize unmanned operations as soon as possible.
6.Strengthen construction risk management and control. A professional team with strong safety management ability and rich construction experience should be selected. Before construction, risk analysis and assessment should be carried out on hazard factors such as falling from height, equipment instability, toxic and harmful gases, special operating procedures should be prepared, and strict safety technical measures should be formulated.
7.Strengthen the supervision of the construction process. The construction unit is required to carry out the construction in strict accordance with the coal bunker construction operation procedures. When using raise boring rigs to dig coal bunkers and coal holes, it is strictly forbidden for personnel to stay, pass, observe or remove slag below during the reaming operation.
Clean up the gangue in the gangue hole in time to prevent the hole from being blocked, and special measures must be formulated to deal with the hole blocking, and it is strictly forbidden to stand on the gangue of the hole.
8.Strengthen safety warnings and facility allocation. Obvious safety warning signs should be set up near the coal bunker to clarify the existing risks and control measures. Safety facilities such as preventing personnel and materials from falling shall be set up at the upper mouth of the coal bunker.
9.Strengthen monitoring and surveillance. Monitoring instruments and equipment such as monitoring, personnel proximity protection devices, infrared thermal imaging, CO sensors, CH4 sensors, coal level gauges, etc., should be installed around the coal bunker, and networked with the mine dispatching system to give timely warning of abnormal coal accumulation.
10.Strengthen the source and process control of coal flow. Strengthen the identification and treatment of large coal gangue and foreign bodies in the transportation system, crushers should be installed at the first machine of the working face, iron removers should be installed in the coal flow transportation system, and grates should be installed at the entrance of the coal bunker. Promote the application of **AI foreign body recognition and other technologies to strengthen the monitoring of coal flow transportation, and strictly prevent large pieces of coal gangue, ironware, wood and other debris from entering the coal bunker.
11.Reasonably determine the coal storage**. The loading capacity and empty volume of coal bunkers should be controlled within the specified range. If the mine is shut down for maintenance for more than 24 hours, it must be controlled at the lowest position, and it is strictly forbidden to empty without construction tasks. When the coal bunker is not used for a long time, the coal storage shall not exceed 15 days, fire prevention measures shall be taken, and measures shall be taken to prevent wind flow and short circuit shall be taken after more than 15 days.
12.Strengthen the management of coal bunker decommissioning and reuse. When the coal bunker is out of use for a long time, it is necessary to organize on-site inspection and acceptance, and confirm that it meets the safety conditions before it can be put into use.
13.Do a good job of waterproofing coal bunkers. It is strictly forbidden to use the coal bunker as a running waterway, and the upper mouth of the coal bunker should be higher than the bottom plate of the roadway. When the coal bunker is drenched, measures such as plugging and draining must be taken, and it shall not be used if it is not properly treated. If the water content of raw coal is large, a coal-water separation device should be installed in the main coal flow transportation system, and measures such as interception and drainage should be taken at the lower mouth of the coal bunker.
14.Strengthen the management and maintenance of coal bunker facilities and equipment. Regularly inspect the integrity of equipment and facilities, standardize testing and testing, strengthen maintenance and timely overhaul.
15.Strengthen the risk management and control of daily maintenance operations. Special safety technical measures must be formulated for the maintenance, cleaning, repair and reinforcement of coal bunkers, and the operation shall be carried out progressively from top to bottom. Imaging scanners, cameras and other equipment should be used to probe to avoid personnel entering the coal bunker.
If it is really necessary to enter the warehouse for processing, special safety technical measures should be strictly implemented, and safety guardians must be equipped on site to strictly prevent risks such as falling, coal gangue collapse, and suffocation. When overhauling the coal feeder at the lower mouth of the coal bunker, a warning should be set at the upper mouth of the coal bunker to prevent coal flow and debris from entering the coal bunker, and emergency measures should be taken to prevent the wind flow from short circuiting.
16.Strengthen security risk management and control. Emergency response to the situation of blockage, collapse and other situations, it is strictly forbidden to blindly deal with it without authorization, and the emergency plan should be started immediately, and the mine leaders should organize on-site exploration, study and formulate special safety technical measures, and the construction can only be carried out after the approval of the mine manager.
17.Standardize the process of warehouse blockage. When disposing of the blockage, it is necessary to go from top to bottom, strictly prohibit personnel from entering from below, give priority to the use of fixed mechanical devices to dredge, personnel must wear safety belts throughout the process and have reliable fixing points, strictly prevent the formation of negative pressure when the coal bunker is dredged and involve the personnel, encourage the use of new technologies and equipment such as air cannons, ultrasonics, and plugging cleaners.
18.Standardize the process of handling the collapse of warehouses. When dealing with the collapse, it is necessary to clarify the operation process of the coal feeder ram and the responsibilities of the on-site safety guardians, strengthen the observation of the water and coal in the coal bunker and the ram of the coal feeder, and set up a cordon in the construction area to prevent other personnel from entering by mistake, so as to ensure the safety of the construction personnel and the reliable operation of the coal feeder ram, so as to strictly prevent the occurrence of secondary collapse accidents.
*: State Mine Safety Supervision Bureau.