公开(公告)号：US11879327B2

公开(公告)日：2024-01-23

申请号：US17465015

申请日：2021-09-02

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  WUHAN CHANGSHENG MINE SECURITY TECHNOLOGY LIMITED

Inventor： Qiang Wu ,  Chunsheng Liu ,  Yifan Zeng ,  Liu Liu ,  Fengjuan Tao ,  Gang Hu

IPC: E21B47/12 ,  E21B47/04 ,  E21F17/18

CPC classification number: E21B47/12 ,  E21B47/04 ,  E21F17/18

Abstract: Disclosed is a system and a method of transient electromagnetic advanced detection. The system includes a detection host, an electromagnetic signal transmitter, a probe, and a communication device. The system and method of transient electromagnetic advance detection disclosed by examples of the present disclosure can realize an early-warning through a transient electromagnetic advance detection in a borehole while drilling the borehole in a tunnel or a roadway.

公开(公告)号：US12287445B1

公开(公告)日：2025-04-29

申请号：US18939876

申请日：2024-11-07

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Yifan Zeng ,  Xianhui Wang ,  Qiang Wu ,  Chunsheng Liu ,  Fei Chen ,  Jia Zhao ,  Zhuangjie Cui

IPC: G01V1/46 ,  G01V1/50

Abstract: A coal rock interface directional detection device based on elastic waves includes: a probe body including an elastic wave receiving device and an elastic wave excitation device spaced set at the top; a protective tube with one end connected to the adapter. The protective tube includes a collection circuit board inside the protective tube, and the collection circuit board is electrically connected to the elastic wave receiving device and the elastic wave excitation device; a sleeve, installed outside the protective tube, with one end connected to the side of the probe body near the adapter and with the other end connected to the side of the protective tube away from the adapter; and a control host, wirelessly connected with the acquisition circuit board. A coal rock interface directional detection method based on elastic waves applied in the coal rock interface directional detection device is also disclosed.

公开(公告)号：US11365624B2

公开(公告)日：2022-06-21

申请号：US17036015

申请日：2020-09-29

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  WUHAN CHANGSHENG MINE SECURITY TECHNOLOGY LIMITED

Inventor： Yifan Zeng ,  Qiang Wu ,  Chunsheng Liu ,  Lina Xing

IPC: G01V3/26 ,  G01V3/34 ,  G01V3/38 ,  G01V9/02 ,  E21B47/13 ,  E21B47/003 ,  E21F17/06 ,  E21F17/18

Abstract: Disclosed is a system and a method for monitoring water inrush, including: a host terminal, a field host, at least one controller and at least one electrode array. Each electrode array is placed in one borehole and to detect electric field signals of surrounding rocks around the borehole; each controller connects with one electrode array and is to control the electrode array to carry out a high-density induced polarization measurement on the surrounding rocks; the field host connects with the controller and is to send control signals to the controller, receive and process the electric field signals output by the electrode array; and the host terminal connects with the field host and is to receive the electric field signals processed by the field host, determine changes on apparent resistivity and apparent chargeability of the surrounding rocks, and determine whether there exists water inrush according to the changes.

公开(公告)号：US10795051B2

公开(公告)日：2020-10-06

申请号：US16134297

申请日：2018-09-18

Applicant: WUHAN CHANGSHENG MINE SECURITY TECHNOLOGY LIMITED ,  CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING

Inventor： Qiang Wu ,  Liu Liu ,  Yifan Zeng ,  Fengjuan Tao ,  Chunsheng Liu

IPC: H04N5/225 ,  G01V8/02 ,  H04N5/232 ,  H04N7/18 ,  G01V3/08

Abstract: Disclosed is a three-dimensional digital virtual imaging device for stratigraphic texture of borehole core, wherein the probe depth counting pulley is mounted on the lifting wire frame, the output shaft of the motor is configured to drive the reel to rotate, and one end of the cable is connected to the cable transfer node of the retractable reel, the signal input end of the borehole imaging trajectory measuring probe of the on-site imaging host is electrically connected to one end of the cable through the cable transfer node of the retractable reel, the cable is wound on the retractable reel, a retractable line is controlled by the retractable reel, the cable is extended and retracted on the probe depth counting pulley, the probe depth counting pulley records the length of the retractable line of the cable, the depth feedback signal output end of the depth counting pulley is connected to the depth feedback signal input end of the on-site imaging host, the motor control signal output end of the on-site imaging host is connected to the control signal input end of the motor, and the signal output end of the borehole imaging trajectory measuring probe is connected to the other end of the cable. It can automatically generate borehole video, two-dimensional digital virtual borehole core image and 3D borehole trajectory in real time.