Safety measures for working surface grinding
I. Overview of the working surface (with a schematic diagram of the working surface)
Second, the construction method
Tilt length
2. According to the actual situation, the adjustment ratio
Third, safety technical measures
1. Charge amount, blasthole depth
2. Anti-gas, CO and other harmful gases related content
3. Anti-drift chain, broken chain, etc.
4. Cannons to evacuate the post and post the contents of the post
5. Engineering quality and roof management requirements
Working face work, safety and technical measures for returning work
I. Safety technical measures for work face work
1. Before the work is completed, the team leader, the tile inspector and the safety inspector jointly enter the working face to inspect the coal wall, roof, support, gas, etc.
2. Switching power failure blocking, pipeline hanging and drainage requirements
3. Control the requirements of working face piece and empty top
4. Is the drainage facility complete and reliable?
Second, work surface safety and technical measures
1. Before returning to work, the team leader, the tile inspector and the safety inspector jointly entered the working face to inspect the coal wall, roof, support, gas, etc.
2. Whether the switch has no explosion, whether the pipeline is hung properly, whether the power supply, water supply, liquid supply and drainage system are working properly.
3. Test operation of transporter and shearer
4. Ensure the stability of power supply, water supply system and drainage system
5. Ensure the normal requirements of the hydraulic system
6. Control the requirements of working face patches and empty tops
7. Requirements for entering the class and asking for help
Gas control measures on the working face
I. Overview of the work surface
Second, introduce the working face gas situation
Third, safety technical measures
1. Windshield wind barrier hanging requirements
2. Probe suspension position and precautions
3. Precautions when shacking
4. Number of explosives and distance required for drawing
5. According to the requirements of the drainage pipe required by the ventilation department
6. Requirements for protective walls on coal and other materials
Working face over-slope safety technical measures
1. Briefly describe the relative relationship between the status of the structural belt and the working surface.
Second, the method
1. How to pass the rock when it is not hard; how to pass it when it is hard
2. When shooting is required, safety measures for shooting can be made and a blasting chart is attached.
3. Rock breaking thickness and bottom coal loss (with sectional view)
Third, safety technical measures
1. The hidden danger notice under the local survey department
2. Gas and other harmful gases
3. Advance reinforcement materials, reinforcement methods and anti-chip help, roofing regulations
4. How to strengthen coal quality management
5. Prevent transport chain drifting
Technical measures for prevention and control of water in working face
First, the basic situation of the work surface
Second, a brief introduction to the easy water outlet area and approximate water output
Third, safety technical measures
1. The local survey department issues a hidden danger notice
2. Formulate requirements for water exploration and protective measures (three views of the arrangement of the exploration holes)
3. Drainage equipment and requirements
4. Disaster avoidance route and drawings
Safety measures for working face over old lanes
I. Introduce the relationship between the working surface and the old lane (schematic diagram of the attached section)
Second, a brief description of the old lane method
Push over
2. Oblique (specified oblique angle)
Third, safety technical measures
1. The ground survey department issues the hidden danger notice content
2. Explore the arrangement, quantity, depth and orientation (with three views)
3. Defining the minimum coal pillar distance
4. Waterproof, anti-gas, CO and other harmful gases related content
5. Advance reinforcement materials, reinforcement methods, anti-chip help, roof fall, etc.
6. Post-harvest grouting (water) to prevent fire
7. Drainage equipment and requirements
8. Provisions for opening and closing, grouting and fire prevention work in front of the old alley, and reinforcement of old roads
Working face safety technology measures
First, the positional relationship between the working surface and the fault (with a flat section)
Second, the construction method
1. Rock breaking thickness, rock breaking length
2. Rock breaking method, it is required to specify the firing requirements when shooting
3. Special requirements for support during fault crossing
4. Lost top coal situation
Third, safety technical measures
1. The geology department releases the notice content
2. Passing fault height regulation
3. Pump station pressure and bracket maintenance regulations
4. Control top and bottom support measures
5. Measures to ensure coal quality
Safety measures for initial release of working face
First, the initial mining measures for the fully mechanized caving face
(1) Preparation before the initial mining
1. Various materials, models, types, quantities and storage locations. Recycling of used materials and equipment.
2. Inspection and commissioning regulations for equipment, brackets, hydraulic systems, power supply, water supply, grouting, transportation systems, monitoring and control systems, and anti-burst facilities.
3. Construction method and size of artificial gaps (excluding self-production gaps)
4. Provisions for sheds and advance support
(1) Way of end support
(2) Ways and materials for the shed
(3) Advanced reinforcement support methods and materials
(2) Initial mining
1. Coal cutter feeding method
2. Removal of coal wall support
3. Ways to adjust the bracket and transporter
4. The time and length of the shearing net on the side of the goaf, and the step and method of placing (top) coal
5. Time and method of pre-cracking blast (when the top coal falls badly)
6. Pre-emptive top processing content, shifting precautions
7. Monitoring of ventilation system and harmful gases such as CH4 and C0 at initial mining
(3) Organizational measures
1. Leading team leading the production mine leader
2. Organize and improve the normal operation of each system
3. Determine the step size of the initial pressure on the working face and the requirement to prevent roof fall
Second, the initial release measures of the cannoning face
(1) Preparation before the initial mining
1. Type, type, quantity and storage location of various supporting materials
2. The working order and the way and place of recycling old materials
3. Good inspection of power supply, water supply, transportation, hydraulic and grouting systems
4. Supporting methods and specifications for upper and lower safety ports
5. Materials and methods for upper and lower sloping sheds, length and advanced reinforcement support
(2) Initial mining measures
1. Initial shotgun blasthole arrangement and charge requirements
2. The first step of coal mining step
3. Provisions for networking and the original cut-off network edge
4. Moving column truss sequence
5. Single column anti-fall anti-skid regulations
6. Shift transport order and requirements
(3) Initial measures
1. Initial release time, position of coal caving port, method of coal caving and amount of coal
2. After the coal is released, the coal sealing method and material are closed.
3. Observation and maintenance of the bracket before coal dumping, coal caving, and coal caving
4. CH4 management when coal is released
(4) Forced ceiling measures
1. Arrangement of blastholes: spacing, depth and orientation, three views
2. Explosive type, model, detonator type, foot line length
3. Charge method, quantity and sealing of blasthole material
4. Detonation length, eye count and blasting effect test
5. Pre-eye, post-charge, pre-detonation check bracket, CH4 regulations
6. Large coal processing regulations
7. Provisions for strengthening the support form (butt lifting shed or reinforcing column) before the initial pressure on the working face
Work surface prevention film and roof treatment safety technical measures
First, the basic situation face, the face surface including a weak gradient, where coal and slate top and bottom of the coal seam joint fracture broken belt and geological distribution factors Coal Wall at Face impact.
Second, the prevention of work surface film measures
1. Determination of the height of the working face
2. Coal wall beam end height and beam end distance regulation
3. Supporting regulations for broken roof
4. Provisions for guaranteeing the initial support and working resistance of the bracket
5. Working surface support measures and requirements for supporting materials
Third, the top treatment
1. Briefly describe the location, extent, and fall of the roof, and describe the surrounding support and roof conditions.
2. According to the specific conditions of the roof area, develop a reasonable treatment plan and construction process
3. Calculate the type, quantity and location of the required materials, etc.
4. Organizational measures (such as the district captain to follow the class, on-site command, arrange for experienced people to watch the top, etc.)
Fourth, security technical measures
Safety measures for static pressure water injection on working face
I. Overview of the working surface and the purpose of static pressure water injection
Second, safety technical measures
1. Requirements for water injection eye distance, eye drilling tools, sealing materials, etc.
2. The number, depth and angular orientation of the water injection eye
3. Water injection time
4. Water injection pressure
5. Water injection effect
Safety technical measures for roof management
First, the work surface overview, including the situation of the top and bottom plates
Second, the working face support equipment model and main technical parameters
1. Equipment model
2. The main technical parameters of the equipment
3. Emulsion pump
4. Maximum height, minimum height, center distance, moving frame (step), initial support force, working resistance, supply pressure, and number of supports
Third, the work surface support strength calculation and verification
Fourth, the work surface roof management
1. Schematic diagram of the work surface bracket layout
2. Description of the arrangement and spacing of the bracket
3. Maximum and minimum control top and top step
4. Bracket specification quality requirements
5. Prevention and treatment measures for work face help and roof accidents
6. The materials and quantity that must be reserved for the work surface
V. Safety exit and end management on the work surface
Support means
2. Support method
3. Relevant regulations on safe export and end management of work surface
Sixth, safety technical measures
1. The mining must be carried out in strict accordance with the design height, and the top and bottom plates must be cut and straightened.
2. The working face must strengthen the roof management, and timely move with the machine
3. When the working face piece is serious, the front frame is moved ahead, and the beam end distance is still exceeding the regulation after the frame is moved. The roof plate maintenance must be adopted to strengthen the roof plate maintenance (using φ16cm×2m round wood with DZ2.5 single beam and two beams) Column support).
VII. The upper and lower Slotted Beams must be repaired in time and the broken beams should be replaced in time to ensure the ventilation section of the roadway.
Eight, organizational measures
1. Established a roof management team led by the production mine manager
2. Organize and improve the normal operation of each system
Work surface support change safety technical measures
First, the basic situation of the work surface
Second, the reasons for the change of the work surface support
Third, briefly introduce new ways of support and their advantages and disadvantages
1. Support strength calculation
2. Method steps for new support and old support removal
Fourth, security technical measures
1. Precautions when changing the shed
2. Provisions for shed distance and column spacing
3. Single column initial support force requirements
4. Safety measures for beams and columns or brackets entering and leaving the work surface
Safety technology measures for working roads along the empty roadway
Pioneering rock alley
Technical safety measures for opening of ××岩巷工程
I. Overview
1. The position, section and support form of the new opening roadway;
2. Description of the support form of the opening (original) roadway, surrounding rock pressure, appearance, various pipeline laying, etc. (attached roadway plan).
Second, safety technical measures
1. Roadway reinforcement method: reinforcement method and reinforcement length of the roof reinforcement at the opening of the roadway.
2. Equipment (lineage) protection: All electrical equipment and various pipelines around the opening position should be removed before the opening. The protection method and protection length should be explained.
3. Middle waist line: The opening must have the middle waist line sent by the local survey department.
4. Opening (5m into the nose) blasting requirements: specify the maximum cycle progress and maximum charge. If necessary, use manuscript excavation to prevent vibration from surrounding rock or roofing caused by shooting.
5. Regulations for the placement of guns: All the roadways that communicate with the open roadway should be set up with special personnel or guards, railings, and positions (with photos).
6. Gas management system.
7. Other requirements.
Through fault safety technical measures
I. Overview
The section of the roadway, the form of support, and the elements of the fault are accurately described (with a flat section).
Second, according to the geological and hydrogeological contents of the "Safety Mining Notice" of the Geodetic Survey Section, combined with the actual situation of the working surface, determine the corresponding form of support.
Third, safety technical measures
1. Advanced drilling requirements (design, approval, release notice, construction unit execution, etc.).
2. Exploring the eye: 10m from the fault fracture zone, adhere to the principle of side exploration and exploration, to determine the number, location, depth, angle and other parameters of the eye (with three views).
3. According to the lithology of the working face, the roof management, blasthole arrangement, blasthole charge, blasting manual and cycle progress shall be clearly defined (with photos).
4. Prevention of roofing method: If there is a risk of roof fall in the blasting, write the specific construction method to prevent roofing.
5. Advance support use method.
6. Detection and treatment of harmful gases: When the roadway is adjacent to the fault, the method of checking and handling harmful gases should be clearly defined.
7. Prevention of water: If the fault geological structure is rich in water, special water prevention measures should be formulated.
8. Fault observation: During the construction, the changes of surrounding rock should be observed frequently, and abnormalities should be reported and processed in time.
9. Other requirements.
Adjacent safety technical measures
I. Overview
Description of the road surface and the adjacent roadway (with plane and section).
Second, safety technical measures
1. Middle waist line: strictly in accordance with the mid-waist line construction given by the local survey department.
2. Forecasting the adjacent position: The geodetic survey department must issue the exact position of the starting and ending point with the adjacent roadway less than 20m. The construction unit will start from the “adjacent notice†of the grounding test section, and the team will set up a special person to master the construction progress and fill in the map in time.
3. Shooting regulations: When the distance from the adjacent roadway is less than 20m, all the roadways that are connected to the adjacent roadway should be set up with special personnel to stand guard or set up warning signs, railings, and standing positions (with photos). Do not dismiss the post without authorization.
4. Hazardous gas inspection regulations.
5. Reinforcement of adjacent roadways: If reinforcement is required, the reinforcement position, reinforcement method, and reinforcement length are specified.
6. Water treatment in adjacent roadways: If there is water in the adjacent roadway and affects safety, it shall be excluded in time when the distance from the adjacent roadway is less than 20m.
7. Sight-seeking requirements: When the distance from the adjacent roadway is less than 10m, the principle of first dig-out must be strictly examined to determine the number, location, depth and orientation of the eye-seeking (with three views). Before each shot, the gunner and the squad leader must check that the depth of the eye is in compliance.
8. Other requirements.
Safety technology measures for rock tunneling
I. Overview
The description of the supporting form, supporting state, various equipment pipelines, gas, ventilation, and water accumulation of the transparent (through) roadway, with plane and sectional drawings.
Second, safety technical measures
1. Middle waist line: Strictly according to the construction of the middle waist line given by the local surveying department, the construction unit will set up a special person to map in time and master the remaining distance.
2. Prevention water: If there is water in the through-passage, it should be excluded before the penetration of 20m.
3. Roadway reinforcement: The geodetic survey section must give the location of the tunnel opening in advance, and the construction unit should carefully carry out reinforcement (reinforcement method and reinforcement range) before the penetration of 20m.
4. Equipment (pipeline) protection: All electrical equipment and various pipelines around ××m around the location of the opening shall be removed before the penetration. Measures that cannot be removed shall be protected (clearly stated).
5. Ventilation management (the ventilation of the roadway is the local fan ventilation): Before the roadway runs 20 meters apart (50 meters in the comprehensive tunnel), one must stop the tunneling. The working surface of the tunnel must be kept properly ventilated, fences and warning signs should be set, and the inspection should be carried out frequently. The air condition of the air duct and the gas concentration in the working surface and its return air flow must be dealt with immediately when the gas concentration exceeds the limit.
6. Stationary regulations (with photos)
7. Exploring the eye (with three views).
8. After blasting requirements: clarify the maximum cycle progress and maximum charge, minimum resistance line. If necessary, manuscripts and winds will be excavated.
9. Gas and support inspection: Before the penetration distance of 20m, before the blasting of the working face of the excavation, it is necessary to send a special person and the gas inspector to the working face of the excavation to check the gas concentration in the working face and its return air flow. When the concentration exceeds the limit, the work on the excavation face must be stopped first, and then the gas should be treated. The working face of the excavation can be blasted only when the gas concentration in the two working faces and its return air flow is below 1.0% and the support is reliable.
10. Three-person interlocking instructions.
11. Measures to implement supervision: The construction units, ventilation zones, inspection departments, and related business departments that are in charge of the work shall be implemented on the spot to implement and supervise the implementation of the measures.
12. Work arrangements before the ventilation system is not adjusted and stabilized after the penetration.
13. Communication requirements for contact
14. Other regulations.
Safety technical measures for tunneling in rock roadway
I. Overview
1. Engineering description. The basic conditions of roadway and old roadway are described, and the spatial position of the two roadways is described (with plane and section view).
2. Describe the location, length, section, support form, water accumulation in the old lane, whether there is any supplementary water source, and the types of harmful gases in the old lane.
3. Relative distance, estimated phase penetration time (with photos).
Second, safety technical measures
1. Middle waist line: strictly in accordance with the construction of the middle waist line given by the local surveying department. The construction unit will set up a notice from the grounding test notice, and the team will set up a map in time to grasp the remaining distance.
2. Prevention and control of water: The geodetic survey department timely predicts water and water damage, and predicts water quantity and water pressure when there is water accumulation. The water line, the water line and the warning line are marked on the drawings, and the water prevention plan and measures are formulated, and the construction unit implements it.
3. Exploring the eye (with three views).
4. Signs of water inrush (when there is water in the old lane).
5. Ventilation: Ventilation management and exploration and treatment of toxic and harmful gases after the exploration of the eye and the passage of the roadway.
6. Anti-corruption measures for the old lane: According to the situation of the top and coal, the maximum cycle progress, the maximum charge, the minimum resistance line, etc., are required.
7. Implementation and supervision of measures.
8. Other requirements
Technical Measures for Preventing Mistaken Coal Safety in Rock Roadway Excavation
I. Overview
1. Gas geological conditions, coal seam occurrence stability and structure of the working face.
2. The thickness of the rock pillar between the roadway and the coal seam (with a section).
Second, the middle waist line and the prospecting regulations
1. Middle waist line: The ground survey department sends the middle waist line according to the design, and the construction unit strictly follows the middle waist line construction.
2. Exploring the eye: clearly determine the number, location, depth, and orientation of the eye (with three views). It is strictly forbidden to put medicine and shoot in the eye. The construction unit must strictly implement the principle of side exploration and excavation.
3. When any one of the tunnels explores the coal during the excavation process, the construction unit should immediately stop the excavation and notify the relevant departments.
Third, safety technical measures
1. Strengthen the regulations on gas management and monitoring.
2. Strengthen ventilation and ensure the smooth flow of the return air system
3. Measures to strengthen the management of electrical equipment.
4. Advanced drilling requirements (design, approval, release notice, construction unit execution, etc.).
5. The construction unit observes and reports the abnormal situation.
6. Relevant regulations on shooting and evacuating people.
7. Highlight the omen.
8. Avoidance routes.
9. Other requirements
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