Safety technical measures for the construction of

2022-10-18
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Safety technical measures for hydraulic pump chamber construction

plasticomp combines continuous glass fiber and carbon fiber filaments. According to the actual production needs, the mine leaders decided that the markets in other regions should perform well; With the slight rise of the marine market, a hydraulic pump chamber should be built in the loading chamber of the main shaft. The specific construction site is the inclined opposite of the operating platform chamber, which opens the door to the south side of the roadway (see the construction plan and profile drawings for details). The design quantity is 3M, and the anchor shotcrete support is adopted. The net height and width of the roadway are 2.2m and 2.8m. In order to ensure the construction safety, the following safety technical measures are specially formulated:

II. Support form and specification

anchor shotcrete support is adopted in the construction. The net width of the roadway is required to be 2.8m and the net height is 2.2m. During the construction, the top control distance shall be strictly controlled, and the top control distance shall not exceed 0.5m. Permanent support must be carried out in time after blasting

III. construction technology and construction method

1. Construction technology

(1) shift handover → safety inspection - line inspection → wheel gauge hole → drilling → charging connection → blasting → ventilation and watering to reduce dust → knocking on the top, temporary support → rock loading → bolting and hanging → shotcreting → acceptance engineering

2. Construction method: the roadway first opens the door diagonally to the south side of the roadway from the operation platform chamber of the main shaft loading chamber (see the construction plan and section drawings for details), The design quantity is 3M, and the bolt shotcrete support is adopted. The net height of the roadway is 2.2m and the net width is 2.8m

3. During construction, the blasting must adhere to the principle of charging and blasting by times, shallow eyes, less charging, only relax and run, and do not magnify the blasting

IV. preparation before construction

1. Before construction, the general repair team will transport all kinds of materials used in construction (cement, resin anchor rod, metal, shotcrete machine, etc.) to a range of 20 meters away from the construction site, place them in a spacious place, stack them neatly, and prepare for emergency use

2. Before construction, the electromechanical team will remove the quantitative belt and place it in a spacious and safe place, but things still need to be divided into good and bad, so as to avoid blasting to destroy it

3. Before construction, the mechanical and electrical team will connect the air and water pipelines used in the construction to within 5m of the door opening to ensure that the chamber starts on time

4. Before construction, effective protective measures must be taken for the high-voltage cables and drainage pipes in the shaft below the construction site to strictly prevent them from being damaged by slag falling and affecting the underground power supply and drainage

5. Before construction, the general repair team must set effective gangue retaining measures 10m outside the horse head door at the bottom of the main shaft and the pipe crossing of the pump room, and arrange special personnel to set up a guard. Without permission, no personnel are allowed to enter to prevent injury

6. Before construction, the mechanical and electrical team must install one intact at the construction site of the hydraulic pump chamber and the mucking place at the bottom of the main shaft, so as to facilitate the contact of the construction personnel. Before mucking from the top, notify the mucking personnel at the bottom of the main shaft, and all the mucking personnel at the bottom will be on standby at a safe place. Only when the mucking personnel at the top use the least materials to achieve the highest protection of the product, and notify the mucking personnel at the bottom of the main shaft that there is no mucking from the top, can the mucking personnel at the bottom of the main shaft enter the shaft to push the ore car to muck out, otherwise it is strictly prohibited to enter the shaft, and so on

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