First, the roadway expansion standard:
1. The planned length of a belt lane maintenance roadway is 10 meters. It adopts U-shaped steel support. Specifications: Lane width 3.4 meters, lane height 2.8 meters, shed distance 0.6 meters, woven state, top with woven mesh and 椽The pole is firmly fixed, the pull plate is fixed, the top of the mast is fixed in a straight line; the number of sheds is not less than 40, and the top empty space is solidly packed with waste wood.
2. The construction site must be reinforced before construction. The reinforcement method adopts one beam and two columns, and the length of the reinforcement is not less than 5 meters.
3. Temporary support: Temporary support for the front beam. The front probe beam is made of π-shaped steel beam, double beam two card, 4m long, and two pieces are symmetrically arranged along the center of the roadway. When used, the wooden wedge is used to tighten the back.
4. The expansion of a belt lane starts from the end of a belt and is carried out in the order from the rear to the front.
5. During the construction, the construction is carried out strictly according to the middle waist line given by the technical department. The allowable deviation of the distance from the center line to any state is 0～±50mm, and the distance from the waist line to the bottom surface of the top beam is -20mm～+. The tolerance of 20mm and triangle line is ±50mm.
Second, security technical measures:
1. Before construction, all cables and monitoring lines in the roadway must be covered with Jingba or old belts to protect them from damage.
2, before the construction to clean up the retreat, to ensure smooth retreat. Before the expansion, according to the actual situation of the site, the length of the I-beam steel roadway should not exceed 0.6 meters each time. (When the I-beam is removed, the shed reinforcement must be carried out in front of the construction site to ensure the quality of reinforcement. Safe and secure).
3. When sheds, it is necessary to expand a shed and shed a shed; firstly, the top part of the pole must be worn in the top of the U-shaped steel after the top is expanded, and the upper part of the rod is placed on the top of the U-shaped steel to expand the width of the designed roadway. First, stand up the two gang legs, then put on the beam, set the screws, tighten the pull plate, the screws must be fixed firmly, the back of the back of the wooden back is made into a straight line, the back wood spacing is 0.4 meters, and the top empties are solid with waste wood. Keep it up.
4. The construction site uses a belt bridge to set up a workbench of appropriate height. The workbench must be securely secured to ensure that the workbench is secure and secure.
5. The safety of the construction site should be checked in time. The materials stored must be placed securely. The construction personnel should always pay attention to the safety situation in the lane to ensure that the construction is carried out under the premise of safety.
6. Strictly implement the “knocking and asking top†system on the construction site. The construction personnel must use the long tool to remove the live rock from the top of the roof and then carry out the support work under the cover of the intact support.
7, when the upper beam, standing legs, must support, stabilize, prevent bruises, accidents.
8. The joint between the arch beam and the leg must be close to the rig, the shed is not skewed, and the construction quality meets the requirements; the phenomenon of not supporting the top is strictly prohibited.
9. The construction site shall be designated as a special person. Before the construction, the division of labor shall be clearly defined to the person, and the precautions shall be explained. The team leader personally stares at the on-site command and constructs according to the measures to prevent illegal operations.
10. When the beam is on the beam, the construction site must be no less than 5 people. When the shelf is installed, a special person must be taken care of the roof.
11. Strengthen the ventilation pipeline, and it is strictly forbidden to have the phenomenon of circulating wind, breeze, no wind and diffusing wind.
12. The working place should strengthen the watering and dust reduction, and the dust gathering place should adopt comprehensive dust reduction measures and individual protective measures such as spray watering and flushing roadway. The sprinklers at each Transfer point of the mine are well fixed, sensitive, reliable, and normal in use, preventing coal dust from flying and accumulating.
13. Ensure that the ventilation system is reliable, the wind speed of the roadway must be strictly controlled, and must not exceed the provisions of the “Safety Regulations for Coal Minesâ€. To increase the air volume and change the ventilation system, measures to prevent dust flying should be considered accordingly. Strict gas management system, all electrical equipment in the underground are included in the gas inspection scope, and each shift is checked at least once. The gas inspectors conduct inspections in accordance with the regulations, and implement the on-site handover system. The key locations as well as the abandoned roadways and blind inspectors near the blind lanes are not allowed to operate.
14. Mine KJ95N safety monitoring system, regularly adjust the underground gas probe to ensure that the monitoring system is sensitive and reliable. The gas inspector checks and displays the displayed value of the gas sensor every shift. The error exceeds 0.1%, and the report should be reported in time.
15. Strengthen the management of fire source, install fire-fighting pipelines underground, improve the fire-fighting system, and prepare various fire-fighting materials and equipment.
16. This class cannot be completed. Under the premise of not affecting the safety work, the top of the gang should be closed tightly, and the next shift of staff can be cleared before leaving work.
17. The construction site must be equipped with brazing rods, sledgehammers, Jingba, wrench tools and materials, and safety safety, engineering quality supervision and inspection.
18. The construction site adopts wind picking, hand-breaking (coal) rock, and artificial loading (coal) rock.
19. At the end of each shift, the joints of the field must be tight and solid, and the debris on the site should be cleaned to ensure that the roadway is clean and tidy.
20. After the expansion of the “U†steel support for each class, the screws of the “U†steel support must be reinforced.
21. After the expansion is completed, hang the signal cable on the roadway gang. The height from the bottom plate after hanging shall not be less than 1.6 meters.
22. In the course of construction, if other abnormal conditions occur, please contact the technical department in time to issue additional safety technical measures.
Third, on-site safety management
Implement the “double-band†system of mine-level leadership. Each class must have a mine-level leader and a department head to carry the class into the well. Strengthen inspection and inspection of maintenance work surfaces and other special operation sites, timely identify and eliminate hidden dangers, stop violations of discipline and discipline, and ensure safe production of coal mines.
In order to do a good job in the safety management of on-site operation sites, our mine adopts the mine-level leadership subcontracting safety management responsibility system, so that the work place has the mine-level leadership person in charge, and the job site must have the team leader and the first-line supervisor to be present at the same time. operation. Before the construction, the maintenance team should clearly distinguish the people, explain the precautions, and take the squad leader personally to stare at the on-site command, and implement the construction according to the measures to prevent illegal operations.
Fourth, the disaster avoidance route
A dangerous gas escape route such as gas and fire occurs in a belt lane working place: work place → track intake wind lane → auxiliary well inlet wind tunnel → auxiliary well bottom → ground.
A disaster avoidance route in the operation of a belt lane: work site → track Shangshan Lane → Auxiliary East Road → Auxiliary Bottom → Ground.
Unfinished matters are strictly in accordance with the provisions of the "Safety Regulations for Coal Mines"
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