Surface mine zone-picking type bench energy dissipation relay drainage system and method

Abstract

Disclosed are a surface mine zone-picking type bench energy dissipation relay drainage system and method. The drainage system comprises multiple single-section catchwater ditches which are arranged on a mine platform in a bench relay mode, water-catchment ponds at the front ends of the catchwater ditches and energy dissipation settling ponds at the tail ends of the catchwater ditches, wherein two adjacent sections of single-section catchwater ditches are connected through bench relay drainage pipes in a bench relay mode. According to the surface mine zone-picking type bench energy dissipation relay drainage system and method, on the basis of sufficiently using features that a large-scale surface mine has high steps and wide platforms, an original method for using a single platform to build the catchwater ditches is changed into a mode in which multiple adjacent platforms are in bench relay connection in sequence, and an original monolayer single area water catchment mode is designed into a multi-layer multi-zone-picking water catchment mode. According to the technical scheme, the phenomena of retention, overflow, brimming over of ditches, and side slope scouring in the large-scale surface mine are effectively inhibited; the water catchment and drainage capability of the catchwater ditches is greatly improved; differentiation configuration of all levels of pump house drainage equipment is successfully achieved, the percentage of mud, impurities and the like contained in water is obviously lowered, and the connotation and functions of an open air drainage system are enriched at the same time.

Description

technical field [0001] The invention relates to a new drainage technology for large-scale open-pit mines, belonging to the field of drainage systems for open-pit mines, in particular to a specific layout method for intercepting ditches on various platforms of open-pit mines, and is applicable to the overall optimization design of the intercepting and drainage systems of large and extra-large open-pit mines. Background technique [0002] The intercepting ditch in the pit of the open-pit mine is mainly used to intercept the surface runoff above the platform of the corresponding intercepting ditch to prevent the surface runoff from flowing along the side slope to the water tank at the bottom of the pit. The orderly interception of surface runoff can reduce the pumping head of drainage on the one hand, and slow down the erosion of surface runoff on the slope on the other hand. [0003] At present, open-pit mines with a production scale below medium-sized, such as mines with a cl...

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Problems solved by technology

[0004] Due to the lack and imperfection of the function of the intercepting ditch, all the catchment water will be collected from the top to the bottom of the pit after scouring the slope from top to bottom. It is difficult to realize the differentiated allocation of drainage equipment for drainage pump stations at all levels, which increases the investment in drainage equipment and drainage costs. In addition, the rainwater has not been clarified and separated and carries a large amount of sediment, which increases the workload of drainage pumps and Equipment loss; on the other hand, the overflow of the intercepting ditch, overflowing ditch, and stagnant water in the ditch are serious, and the slope is severely scoured, which has caused hidden dangers to the safety of the open pit slope, and correspondingly led to a sudden increase in slope maintenance costs , At the same time, this also caused the slope angle of most open-pit mines to be conservative, which greatly increased the amount of rock stripped and the cost of stripping. one of the main roots of the country

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