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1. Before and during support, knock to help ask the top, and remove the hanging gangue of dangerous rock in time. (1) Two experienced personnel should undertake this work, one knocking on the roof, and the other observing the roof and evacuation. Those who knock for the top should stand in a safe place, and observers should stand behind the side of those who look for the top, and ensure a smooth retreat. (2) Knock and ask the top should start from the well-supported place, from the outside to the inside, from the top to both sides in turn, and other personnel are prohibited from entering the scope of knocking and asking the top. (3) When knocking on the roof with a long tool, it is necessary to prevent the electric pole under the coal gangue from hurting people. (4) When the roof wall encounters large pieces of broken gangue or gangue leaving the coal seam. Temporary supports should be set up first to ensure safety, and then help to ask the top along the cracks and cushion, and hard objects should not be forced to dig. 2. It is forbidden to empty the roof, and the temporary support should follow the working face closely. The supporting form, specification, quantity and use method must be clearly defined in the operation procedures. The maximum empty top distance before shooting is not greater than bolt row distance, and the maximum empty top distance after shooting is not greater than bolt row distance+cycle progress. 3. Before the two sides of coal roadway are anchored, brush hard coal with picks and keep the coal side flat. 4. It is forbidden to use supporting materials that do not conform to the regulations: (1) the anchor rod and supporting materials that do not conform to the operation regulations, and the anchor rod body that is seriously corroded, deformed, bent and shrunk. (2) Anchoring agents that have expired and coagulated. (3) Metal mesh with large mesh, low strength and serious deformation. 5. The diameter, spacing, row spacing, depth and direction of anchor holes (including angle with rock surface) must conform to the operation procedures. (1) Strong bolts such as all rebar shall be used, and the depth of anchor hole shall ensure that the exposed length of anchor rod is 30 ~ 50 mm. (2) When seam anchor rod is used in roadway, the depth of anchor rod hole is the same as the length of anchor rod. (3) It is forbidden to install anchor rods for anchor holes whose angles do not meet the requirements. 6. When installing the anchor rod, the tray (or joist, steel belt) must be close to the rock surface, and the untouched part must be wedged and padded without looseness. 7. Bolt supporting roadway must be equipped with bolt detection tools. After the bolts are installed, the pre-tightening force of each bolt should be tested, and the unqualified bolts should be tightened immediately; Spot check the anchoring force of the anchor rod, and the unqualified anchor rod must be re-drilled. 8. When the working face encounters faults and structures, special measures must be added to strengthen the support. 9. Install the anchor rod by drilling. 10. Anchor rod installation sequence: from the top to both sides, install the upper part of two groups of anchors first, and then install the lower part. When laying and connecting the metal mesh, the laying sequence, lap joint and connection length shall comply with the provisions of the operation procedures. Tighten the net when laying it. 1 1. The anchor rod must be subjected to tensile test as required. Roof separation must be monitored in coal roadway and displayed with recording board. 12. If the roadway support height exceeds 2.5m, or the support construction is carried out up and down the slope with large inclination, a workbench should be set. 13. Before operation, the following preparations must be made: (1) Prepare supporting materials such as anchor rods, nets and steel belts and construction machines and tools. (2) Check the wind, water and electricity required for the construction. (3) Implement corresponding regulations for the tunneling driller. (4) Check whether the supporting materials such as anchor rod and anchoring agent are qualified. (5) According to the waist line, check the specifications and quality of the abandoned section of the roadway, and deal with the unqualified part.