Embedding method of combination transducer for early warning and monitoring of water inrush disaster of mines

Abstract

The invention particularly relates to an embedding method of a combination transducer for the early warning and monitoring of water inrush disaster of mines. Water trouble in the mines threatens the life safety of miners constantly and is the puzzle of underground mining industry, and researchers who study the prevention and control of the water trouble in the mines do a large number of study practical works over the years to summarize the technology of preventing and controlling water inrush. The embedding method comprises the following steps of: after quartz sand is paved at the bottoms of two or three drill holes in the same drill fossa and is tamped, conveying the drill holes to a hydrochemical transducer, a water-pressure transducer and a temperature transducer, filling medium-coarse sand with a plurality of thicknesses into the upper parts of the drill holes, and filling puddle with a plurality of thicknesses in the drill holes for tamping; injecting cement paste into the drill holes, and then putting a stress transducer into the cement paste; and putting a strain transducer on the upper part of the stress transducer and injecting the cement paste. In the embedding method, a plurality of transducers in different types are arranged in one hole, so that the method for monitoring the water inrush of the mines has the advantages of practicality, low cost, high efficiency and strong innovation.

Description

technical field [0001] The invention relates to the field of underground mining, in particular to a method for embedding a combined sensor for early warning and monitoring of mine water inrush disasters. Background technique [0002] Mine water hazards always threaten the lives of mining workers and are also a difficult problem in the underground mining industry. Over the years, our mine water disaster prevention researchers have done a lot of research and practice work, and summed up the technology of preventing water inrush. For example, the commonly used dehydration or pumping and pressure relief technology is to discharge the pressurized water through drilling holes, so that the water pressure can reach a controllable level, and the possibility of water penetration accidents during the mining process can be eliminated. However, in the Dashui mining area, the normal discharge method cannot meet the requirements of safe mining, and the pressure mining technology has been ...

AI Technical Summary

Problems solved by technology

However, in the Dashui mining area, it is impossible to meet the requirements of safe mining through normal discharge methods, and a pressure mining technology has been formed, which poses a new problem for mine water disaster prevention and control researchers to predict water pressure and early warning of water inrush.

This technology is to drill a hydrological monitoring hole in the water-resistant formation, put water temperature, water pressure, stress, and strain sensors into the monitoring hole, and monitor the stress and water pressure changes of this protected formation during the mining process. And make real-time forecasts according to the changes, and provide test data for the risk assessment of confined water breaking through the protective formation, so as to effectively prevent water seepage accidents. Personnel and Forecast Engineering Costs