公开(公告)号：US10809417B2

公开(公告)日：2020-10-20

申请号：US16234497

申请日：2018-12-27

Applicant: Taiyuan University of Technology

Inventor： Guorui Feng ,  Chunwang Zhang ,  Zhixin Jin ,  Rui Gao ,  Shengyong Hu ,  Zhen Li ,  Jiaqing Cui ,  Cheng Song ,  Xiaohong Niu

IPC: G01V99/00 ,  E21C39/00 ,  G05B11/01 ,  G05D16/20 ,  E21F1/02 ,  G01N33/24

Abstract: A three-dimensional analog simulation test system for gas-liquid countercurrent in an abandoned mine goaf includes a three-dimensional analog simulation device configured to simulate an analog environment of gas-liquid countercurrent in an abandoned mine goaf, a gas supply system, an automatic water pressure control system and a hydraulic loading system. The three-dimensional analog simulation device includes a reaction frame and a three-dimensional analog simulation chamber. The reaction frame includes a beam, a base and a column for connecting the beam and the base. The three-dimensional analog simulation chamber is arranged inside the reaction frame. The test system can be used to simulate the gas-liquid countercurrent in an abandoned mine goaf so as to study the evolution of water accumulation and gas enrichment in long-term abandonment of closed mines and the migration evolution rules of gas-liquid two-phase in abandoned mines with high gas density.

公开(公告)号：US11473427B2

公开(公告)日：2022-10-18

申请号：US16537604

申请日：2019-08-11

Applicant: Taiyuan University of Technology

Inventor： Guorui Feng ,  Jiaqing Cui ,  Haina Jiang ,  Zhen Li ,  Cheng Song ,  Xiong Shen ,  Xiaohong Niu ,  Shengyong Hu ,  Yanna Han

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.