Mine drainage equipment mainly includes pumps, water pipes and corresponding accessories. 1. In mines with large water inflows in areas with long rainy seasons, the main drainage equipment consists of three pumps of the same type. Each pump should be able to discharge the normal water inflow of the mine for one day and night within 20 hours. The maximum amount of water (including filling water and muddy water) that drains the mine for a day and night. 2. In areas with short rainy seasons, the maximum water inflow is not more than 2 times the normal water inflow, and the mine with less than 50m 3 /h of water inflow can install two pumps of the same type for the main drainage equipment, and one of them can be used for 20h. The mine drains all normal water inflows throughout the day and night. 3. In mines with complex hydrogeological conditions and large water inflow, the total capacity of all main pumps should be able to discharge the maximum possible water inflow, and the pump house should be appropriately increased. Temporary drainage equipment should be added. Ridge Cap Roll Forming Machine, Ridge cap Roll Forming Machine for steel is the special equipment for continuous rolling and cold-forming on steel sheet. It adopts coiling steel sheet as the raw material, decoiling the coil, continuous rolling and cold-forming, automatically cut to the size and output the finished panel. The equipment adopts PLC control, AC frequency and adjusting the speed technology, and it realizes the continuous automatically production, therefore, it is really a new type of energy-saving and high-effective producing equipment for steel structure. The products of our ridge cap forming machine are widely used in building the steel-structured large-scale warehouses, plants, supermarkets, shopping malls, trade markets, stadiums, holiday villages, sanatoriums, hotels, villas, residences, and different kinds of greenhouses. Ridge Cap Roll Forming Machine Ridge Cap Roll Forming Machine,Steel Ridge Cap Roll Forming Machine,Roof Ridge Cap Roll Forming Machine,Ridge Cap Cold Roll Forming Machine CANGZHOU DIXIN ROLL FORMING MACHINE CO.LTD , https://www.dxywj.com