Deep mine heat storage cement mortar preparation and vertical anti-solidification mortar conveying system and method

Abstract

The invention discloses a deep mine heat storage cement mortar preparation and vertical anti-solidification mortar conveying system. The system comprises a slurry stirring tank, a slurry splash guard, an aboveground mortar conveying pipeline, a straight mortar conveying pipe, a reducing pipe, a hollow mortar conveying pipe, a diverging pipe, an elbow, an underground horizontal pipeline, a water-cement ratio detector and an underground mortar conveying pump, wherein the water-cement ratio detector and the underground mortar conveying pump are mounted on the underground horizontal pipeline; one end of the slurry conveying straight pipe is communicated with an opening in the lower portion of the slurry splash-proof cover, a first electromagnetic flow regulating valve is installed on the ground slurry conveying pipeline, the diverging pipe is communicated with the vertical section of the elbow, a first pressure sensor is installed on the slurry conveying straight pipe, a heater is installed on the slurry conveying hollow pipe, and a second pressure sensor is installed on the vertical section of the elbow; one end of the underground horizontal pipeline is communicated with the elbow horizontal section, the other end of the underground horizontal pipeline extends in the direction away from the elbow horizontal section, and a third pressure sensor and a fourth pressure sensor are installed on the underground horizontal pipeline. The system can conveniently convey heat storage cement mortar to a deep mine, and is convenient to operate, low in cost and high in working reliability.

Description

technical field [0001] The invention belongs to the technical field of high-temperature deep mine filling, and in particular relates to a deep mine heat storage cement mortar preparation and a vertical anti-solidification slurry delivery system and method. Background technique [0002] With the gradual reduction and depletion of shallow resources, the depth of mining is increasing. At present, the mines facing deep mining in my country account for 90% of the total number of mines in the country. For the mining of deep deposits, many problems such as high ground stress and high ground temperature will inevitably occur. Therefore, When mining deep mines, safety issues caused by high ground stress and heat damage caused by high ground temperature have increasingly become important factors restricting the effective mining of deep deposits. [0003] The filling mining method is a mining method that fills the goaf with filling material while carrying out ore dropping, transportatio...

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Problems solved by technology

The existing technology for preparing shape-changing phase-change materials cannot meet the requirements of using a large amount of shape-setting phase-change materials when preparing heat storage slurry, and a large amount of unused phase-change material solutions are wasted in the process of preparing shape-setting phase-change materials, which is very It is not environmentally friendly, and in the process of deep well transportation of cement mortar, slow-down devices such as pressure relief boxes, butterfly valves, etc. are mostly used to avoid solidification, plugging and segregation of cement mortar in deep well vertical pipelines. A large number of slow-down devices should be installed on the vertical pipeline. In order to accommodate the slow-down devices, the diameter of the deep well excavation needs to be enlarged accordingly, which increases the difficulty of deep well excavation, and the slow-down devices are not conducive to recycling and reuse. Currently, in these two links, there are still There are many problems

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