Invention Grant
- Patent Title: Physical simulation test method for detecting position of ponding goaf in excavation
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Application No.: US16537604Application Date: 2019-08-11
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Publication No.: US11473427B2Publication Date: 2022-10-18
- Inventor: Guorui Feng , Jiaqing Cui , Haina Jiang , Zhen Li , Cheng Song , Xiong Shen , Xiaohong Niu , Shengyong Hu , Yanna Han
- Applicant: Taiyuan University of Technology
- Applicant Address: CN Shanxi
- Assignee: Taiyuan University of Technology
- Current Assignee: Taiyuan University of Technology
- Current Assignee Address: CN Shanxi
- Priority: CN201811132893.X 20180927
- Main IPC: E21C41/18
- IPC: E21C41/18 ; G06F30/20 ; G06F17/18 ; G06F30/333

Abstract:
A physical simulation test method for detecting a position of a ponding goaf in the excavation, which relates to physical detection of mines. This method includes: fabricating an experimental model of a composition similar to that of an excavating tunnel; fabricating a transient transmitting coil and receiving coil; connecting the coil to a wire and placing them in model A; connecting the coil to a transient electromagnetometer; injecting water into a trapezoidal goaf through a pre-buried plastic pipe; after the goaf is filled with water, immediately switching the transient electromagnetometer on to collect data; respectively transferring the coil to models B, C and D, injecting water and switching on the transient electromagnetometer to collect data; statistically analyzing detection and imaging results of the four models; and comparing the detection results with the actual data to determine detection accuracy and correction coefficient.
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