First, the roadway overview The shaft of the shaft of the wind shaft is an inclined shaft. The net width of the wellbore is 4m. The length of the shaft from the "1" point to the "guide 11" of the wind shaft is 945.6m, the inclination angle is -25°, and the length of the roadway is 60m. The length of the reinforced concrete at the wellhead is 50m. The laneway of the roadway is 2.2m away from the lane of the drainage pipe. The linear distance between the pumping station and the wellhead is 95m. Second, the outline of the laying pipeline system The gas drainage pipe is planned to use a 450mm diameter polyethylene PE pipe to match the high negative pressure small flow gas pump. The 450mm diameter gas drainage pipe is laid by hanging type, and a hanging point is set every 3 meters, and a fixed point is set every 16 meters for reinforced gas drainage pipe to lay down the pipeline. Third, the preparation of gas drainage pipeline installation 1. Prepare tools and materials before construction. The ground stable winch is installed and fixed, and the test run is carried out in advance to ensure the normal use. 2. The pipe to be transported to the underground must be transported by flatbed. The height of the pipe should not exceed the required height and width. After installation, the two chain hoists should be bundled firmly to prevent the pipe from slipping and scraping to affect the transportation. 3, pipe lifting transport should first contact the stable winch driver, in strict accordance with the promotion of transport regulations. The upper and lower hooks should be contacted, strictly in accordance with the ring signal, and strictly enforce the requirements of the regulations. 4. After the pipe is transported to the site, it should be placed at the scheduled location. The requirements should be placed neatly and firmly, and the transportation and ventilation should not be hindered. 5, the pipe hanging eye requires a hole every 3m, the depth of each hole is not less than 400 mm, the injection eye is fastened with fast cement. Fourth, gas drainage pipeline installation safety measures 1. Before installing the pipeline, observe whether there is any safety hazard at the construction site, and deal with the hidden danger first, and then confirm that there is no hidden danger before construction. 2. On-site pipeline transportation and laying, when carrying the pipe manually, it should be put together with the same. When driving up the mountain, the pedestrians must be eliminated. 3. When constructing in a higher position, there must be a strong scaffolding to prevent being injured or injured by the pipe. 4. When connecting the flange, it is strictly forbidden to insert your finger between the gap between the flange and the bolt eye to prevent the wrong hand from being squeezed. 5. The person in charge of pipeline installation must carry the portable instrument with him. When the gas concentration in the wind at the construction site reaches 1%, the construction must be stopped and the construction personnel should be evacuated to the fresh airflow. V. Construction operation process 1. The laying process of the gas drainage pipeline required for this installation requires the installation process of hanging the gang. It is required to hang "flat, straight, and fast", and the second pipeline is laid on the top of the first drainage pipe (630mm) not less than 1.2m from the ground. 2. When laying the pipeline, it should be connected step by step in the order from the outside to the inside. The pipe connection should be connected by flange, and the pipe connection fittings should be complete. The flange joint should be equipped with a washer and tightened to prevent air leakage. 3. When the pipeline is connected, it must be lifted by a special person and connected by a special person. After the connection, the suspension is straight and firm, and the elbow should be set at the corner, without sharp bend, and the inclined lane should be fixed by the pipe clamp. 4. The new pipeline after installation must be tested for leaking pressure. If it does not meet the standard, it should be disassembled and reinstalled. 5. After the pipeline installation is completed, it is necessary to do the finishing work. First, check the quality of the pipeline installation project to ensure that it meets the requirements. 6. After completion, it is necessary to check in time, remove the remaining parts and materials from the construction, and clean up the site, and require the site to be cleaned. Tongfang work area March 14, 2012 Solvent Based Paints And Coatings Organophilic Bentonite,Solvent Based Bentonite,Organophilic Clay Minerals,Organophilic Bentonite Clay CHANGXING GUANGDA NEW MATERIALS CO.,LTD. , https://www.gdbentonite.com
Technical measures for installation of coal mine drainage pipeline
According to the requirements of the gas drainage system that must be installed in the high gas mine, and in conjunction with the "anti-burst regulations", the second road gas drainage pipe is specially installed in the wind shaft, in order to ensure the safety of construction, this measure is specially prepared and strict Complied.