Physical simulation experiment method for detecting position of water accumulated goaf in excavation

Abstract

The invention belongs to the field of mine physical detection, and concretely relates to a physical simulation experiment method for detecting a position of a water accumulated goaf in excavation. Themethod includes the following steps: making experimental models of similar materials for roadway excavation; making transient electromagnetic transmitting and receiving coils; collecting the coils towires, placing the coils into the model A, connecting a transient instrument, injecting water into the trapezoidal goaf through a pre-embedded plastic pipe, and immediately turning on the transient instrument after filling up the water to start collecting data; placing the coils into the model B, model C and model D, injecting water, and turning on the transient instrument to collect data; performing statistics and analysis on detection imaging results of the four models, comparing measurement results with model actual data, and determining detection precision and correction coefficients. Thephysical simulation experiment method of the invention laboratories the detection of the position of the water accumulated goaf in a roadway excavation process, can conveniently correct and optimizelayout plans under different relative positions of the water accumulated goaf and heading faces, and effectively improve the scientificity of the detection of the position of the water accumulated goaf in the excavation.

Description

technical field [0001] The invention belongs to the field of mine physical detection, and in particular relates to a physical simulation experiment method for detecting the position of a water-logged goaf during excavation. Background technique [0002] Water inrush accidents are the most dangerous during the excavation of coal mine roadways. The sudden burst of a large amount of accumulated water will not only endanger the lives of the staff but also cause great damage to the production equipment in the working face. The water accumulation in the goaf is the main cause of water inrush accidents during excavation because it is difficult to detect. Water inrush accidents caused by water accumulation in goafs are usually huge, sudden, extremely destructive and corrosive, and may even submerge the entire mine in severe cases. According to statistics, among all kinds of coal mine accidents, the casualties caused by water damage accidents are second only to gas accidents, and th...

AI Technical Summary

Problems solved by technology

The location of the gob water relative to the tunneling face is different, and its transient electromagnetic response characteristics are also different. There are also corresponding changes in the layout of the field instruments. The layout plan must be targeted, otherwise it will be difficult to receive better detection results.

However, if the specific layout test form is directly debugged on site, it will be labor-intensive and difficult to receive more accurate calibration results

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