Electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and method thereof

Abstract

The invention relates to an electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and a method thereof. The fully-mechanized excavating onboard geological structure detection system is used for detecting the hidden geological structure in front of a tunneling surface under a coal mine and is composed of a coal road fully-mechanized excavating ahead detector, an emission electrode, a restraining electrode and a grounding electrode. Double-frequency modulating wave current is emitted to an area to be detected through the emission electrode and the restraining electrode so as to generate induced polarization effect in coal rock. Polarization information is collected and processed by a receiving part of the detector, apparent resistivity and visual width frequency, namely power feeding equipment (PFE) values, can be automatically calculated and converted into coordinate graphs for display, accordingly, the ahead tunneling geological structure can be judged, and the abnormal positions can be determined by angle scanning and depth scanning. Detection data can be automatically stored and be further analyzed through special data interpretation software, the ahead tunneling geological structure can be obtained, and advanced detection of the fully-mechanized excavating surface of a coal road can be finished. The electric field restraining method coal safety type fully-mechanized excavating onboard geological structure detection system and the method thereof are in accordance with coal safety verification standards, can be in cooperative work with a heading machine and is fast in detection, high in accuracy, good in instantaneity and convenient to operate.

Description

technical field [0001] The invention relates to an advanced detection instrument for coal mine underground operations in the field of advanced detection, which belongs to the advanced detection technology of applying geophysics electric method, and in particular relates to an electric field constraint method coal-safety fully mechanized excavation airborne geological structure detection system and its method . Background technique [0002] The degree of mechanization of my country's coal mining methods is gradually increasing, and the requirements for working efficiency of fully mechanized excavation face are getting higher and higher. During the excavation process, the principle of "prediction and forecasting, excavation must be excavated, exploration before excavation, treatment before mining" must be followed to ensure the safe production of personnel and machines in the working face. [0003] Mine water disaster ranks second among the five major disasters in coal mines,...

AI Technical Summary

Problems solved by technology

These geophysical prospecting methods have no outstanding advantages in the advanced prediction of coal mine roadways. The existing problems are: none of them can realize the integration with the roadheader, and the separation of "exploration and excavation" affects the work efficiency; the prediction accuracy is low, and the detection directionality is poor. It is easily affected by the geological conditions behind the excavation; the electrode layout or preparation work is cumbersome and time-consuming, resulting in poor operability; at present, coal mines use the drilling method in combination with one or more of the above methods, which greatly increases the workload and costs accordingly improve

Images