Mining TBM (tunnel boring machine) water circulation system and mining TBM water circulation method

Abstract

The invention discloses a mining TBM (tunnel boring machine) water circulation system and a mining TBM water circulation method. The system comprises an external water source, an internal circulation water supply pipe, an internal circulation waterway, an internal circulation water outlet pipe and various mining TBM external devices. The external water source is connected with an inlet of the internal circulation water supply pipe, an outlet of the internal circulation water supply pipe is connected with an inlet of the internal circulation waterway, an outlet of the internal circulation waterway is connected with the internal circulation water outlet pipe, and an outlet of the internal circulation water outlet pipe is connected to a water inlet of each mining TBM external device. The external water source supplies water to an internal circulation tank and then distributes to each water pump; each water pump supplies water to the corresponding mining TBM internal device, and water is recycled after use and discharged to water supply pipes of the external devices to be used by the mining TBM external devices; water used by the mining TBM external devices is directly discharged to a roadway floor. Cooling effects of the water circulation system are greatly improved, water consumption and cooling requirements of the devices can be met, the operating rate of the devices is increased, and TMB quick efficient tunneling is guaranteed powerfully.

Description

technical field [0001] The invention relates to a mine TBM water system, in particular to a mine TBM water circulation system and method. Background technique [0002] In recent years, the problem of rapid tunneling in coal mine rock roadways has always been a key factor restricting efficient production. Traditional blasting construction has low footage efficiency and poses a great threat to safety. In 2015, the world's first full-face tunnel boring machine TBM) was successfully tested in Zhangji Coal Mine. This equipment has successively constructed 1413A high extraction roadway and 1415A high extraction roadway in the northern area of ​​Zhangji Mine, with a total excavation length of more than 2000 meters. The maximum monthly footage is 560 meters, which completely solves the bottleneck problem restricting the rapid excavation of rock roadways. However, during the excavation of 1413A high pumping roadway, when the mining TBM is in operation, the hydraulic and electric con...

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Problems solved by technology

[0006] 2. With the increase of the excavation distance, the load of the water pump of the external circulating water system gradually increases, and it is one in and one out, and the water pump load increases at twice the speed of the excavation distance of the roadway. The circulating cooling method of the system can no longer meet the cooling requirements of the equipment. First, the temperature of the water entering the hot water tank is high, and the natural cooling speed is slow. Second, the water supply distance of the water system is long, and the load of the water pump is large, which may easily cause the water pump to fail. affect production

[0007] 3. Since it is necessary to install a return water pipeline to lead the hot water back to the hot water tank, the return water pipeline is extended by a water pipe with a diameter of 89 commonly used in mines, and it is carried out along with the extension of other pipelines during the construction process. , thus virtually increasing the amount of preparatory work before mining TBM excavation construction, resulting in waste of materials and human resources, and increasing the labor intensity of workers

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