Connection roadway type underground transfer sewage treatment system and construction method thereof

Abstract

The invention provides a connection roadway type underground transfer sewage treatment system and a construction method thereof, and relates to the technical field of coal mine underground sewage treatment. The system is characterized in that a transfer sewage pool treatment system comprises a roadway, a connection roadway, a coal pillar, a first-stage filtering pool, a second-stage filtering pool, a sedimentation pool, a water storage and drainage pool, a water injection pipe and a water drainage pipe, the first-stage filtering pool is arranged in the middle or the lower portion of the coal pillar side of a belt conveying roadway and communicated with the second-stage filtering pool, the second-stage filtering pool is positioned in a connection roadway bottom plate formed by an auxiliary conveyingroadway, the belt conveyingroadway and the coal pillar, the second-stage filtering pool is sequentially communicated with the sedimentation pool and the water storage and drainage pool, the second-stage filtering pool and the water storage and drainage pool are respectively adjacent to the coal pillars in the connection roadway, and the sedimentation pool is positioned between the second-stage filtering pool and the water storage and drainage pool. According to the system, the transfer sewage treatment system is constructed by utilizing the connection roadway between the two roadways, the underground excavation space is fully utilized, the sewage of the coal face is purified twice, and the drainage efficiency is also improved.

Description

technical field [0001] The invention relates to the technical field of coal mine underground sewage treatment, in particular to a connection lane type underground sewage transfer system and a construction method thereof. Background technique [0002] Coal mine underground mining activities inevitably produce a large amount of sewage due to environmental dust reduction, equipment cooling, drilling powder discharge, etc. The sewage contains dust, coal dust and various floating objects of small production waste, especially during the working process of the conveyor belt. of fine wool. There is a special discharge system for underground sewage treatment in coal mines, that is, the use of drainage pumps to collect sewage from various places and discharge it to the ground or underground sewage treatment stations. The purified sewage can be reused. However, with the increase of the width of the working face and the length of recovery, the number of sewage points increases, which b...

AI Technical Summary

Problems solved by technology

However, with the increase of the width of the working face and the length of recovery, the number of sewage points increases, which brings difficulties to the collection of sewage; in addition, using a single pump to discharge the collected sewage to the underground central water tank has long pipelines and low efficiency. Set up a transfer tank in the middle to collect sewage from different locations and improve discharge efficiency

[0003] At present, there are generally two ways to build transfer water tanks underground in coal mines. One is to build a special water tank, which requires a large amount of work. With the continuous change of the working face, the utilization rate of the water tank is low; The alley is used as a sewage pool. This method has the following two problems: (1) The sedimentation of sewage is poor, and the suspended solids in the sewage cannot be effectively removed, which is easy to block the drainage pump and affect the discharge efficiency; (2) The transfer drainage pump directly Put it into the bottom of the sewage tank for drainage or use the chain hoist on the top plate to hang the water pump in the sewage tank. The former is close to the bottom of the pool due to the increase of sedimented silt, which will easily lead to blockage of the suction hole. The latter needs regular Lift the water pump out of the pool to deal with the floating sundries such as the fine wool of the belt that clogs the pumping hole, which increases the drainage process, wastes a lot of time for the workers, the work efficiency is low, and the labor intensity of the workers is increased. In addition, the vibration of the pump and other factors disturb the surrounding sewage The flow is not conducive to sewage sedimentation

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