1 ) Self-flow drainage
By using the natural height difference between the open pit and the terrain, without using power equipment such as water pumps, the drainage system that drains the accumulated water from the stope by simple engineering such as drainage ditch is called self-flow drainage. When the local section is difficult to discharge by the topographic barrier, the horizontal ç¡ conduction can be excavated if possible. The drainage system has low investment and low cost and is used by most hillside open pit mines.
2 ) Mechanical drainage
The use of water tanks to collect water, through the power equipment such as pumps, the drainage system that discharges the accumulated water to the surface, called mechanical drainage, is divided into three types: centralized drainage at the bottom of the stope, sub-division drainage at the stope, and underground well drainage.
(1) Central drainage at the bottom of the stope
In essence, the drainage system is provided with a temporary water tank and a water pump at the bottom of the open pit, so that all the water entering the stope is collected into the water tank at the bottom of the stope, and then discharged by the water pump to the surface through the drainage pipe.The water tank descends with the new level of open pit mine. Once the new level water tank is formed, the upper water tank is abandoned, so the water tank and water pump are continuously moving downward during the whole production period.
The water tank, the drainage equipment and the pump house are collectively called the pumping station. The pumping station moving downwards horizontally is called the mobile pumping station. The pumping station that moves downwards several times is called the semi-fixed pumping station.
The pumping station of the drainage system has a simple structure and low investment, and the mobile pumping station is not limited by the height of the mining field. However, the pumping station and the pipeline move frequently, and the development and extension project is affected, and the pit bottom pumping station is easily submerged. Therefore, the system is generally applicable to small and medium-sized open-pit mines with small catchment area and small amount of water, or small-scale small mines with small mining depth, slow descending speed and little impact on water.
(2) Stope segment relay drainage
The essence of the drainage system is: set up several fixed pumping stations on the side of the open pit, intercept and discharge the water in sections, and each fixed pumping station can discharge the water directly to the surface, or can take the relay to pass the upper level. The main pumping station drains water to the surface.
The drainage system has less water at the bottom of the stope, and the conditions for trenching and expansion are good, but the drainage pumping stations are scattered and the amount of infrastructure construction is large. Generally applicable to open pit mines with large catchment area and large amount of water, or mines with large depth and rapid decline.
(3) Underground well drainage
The essence of the drainage system is: through the vertical drainage well or drilling, or the horizontal drainage tunnel on the slope, the rain and underground water are discharged into the underground water tank, and the underground drainage facilities are discharged from the surface.
The collected water in the system is discharged to the underground, and there is no separate drainage facility in the open pit. It has little impact on the production of open pit mines, and is generally suitable for open pit and underground joint mining. The main disadvantage is the increased drainage pressure in underground mines.This product [60t Cement Silos" is adopt sheet-mounted cement silo is connected to the cylinder wall by bolt sealing strips, which is mainly designed and developed for the difficulty of packing and the difficulty in transferring the construction site.
The cement silo (cement tank) has a cylindrical structure, and the bottom is supported by four round tube legs. The whole silo is in the form of steel structure and welded; the top is provided with a dust collector and a pressure safety valve.60T Cement Silos,60T Concrete Cement Silo,60 Ton Cement Silo,Storage Cement Silo
Shandong Zeyu Heavy Industry Science and Technology Co.,Ltd. , https://www.zeyumixer.com