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Patent Agency Ranking
11.发明授权公开(公告)号：US12196076B1
公开(公告)日：2025-01-14
申请号：US18750211
申请日：2024-06-21
Inventor： Yifan Zeng , Weihong Yang , Qiang Wu , Xinjiang Wei , Xuejun Wang , Kai Pang , Xuan Xiao , Xue Liu
IPC: E21B49/00 , E21B7/04 , E21B21/06 , E21B33/138
Abstract: Disclosed is a grouting and water blocking method for a hard rock stratum. The grouting and water blocking method include the following steps. At first, hydrogeological information and coal seam information of a hard rock stratum is obtained. Then, a drilling trajectory of the hard rock stratum is determined based on the hydrogeological information and the coal seam information. Later, at least one drilling device is determined corresponding to the drilling trajectory based on types of multiple rock layers contained in the hard rock stratum. After that, the multiple rock layers contained in the hard rock stratum are drilled sequentially according to the drilling trajectory using the at least one drilling device. At last, in response to determining there is a water leakage area, the water leakage area is grouted.
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公开(公告)号：US12091972B1
公开(公告)日：2024-09-17
申请号：US18596373
申请日：2024-03-05
Inventor： Yifan Zeng , Aoshuang Mei , Qiang Wu , Huaming Wei , Yashuai Cui , Shihao Meng , Weihong Yang , Kai Pang , Liang Yang , Yidi Xing
CPC classification number: E21C41/18 , E21C39/00 , E21C2100/00 , E21F17/18
Abstract: Disclosed are a method and a related device for determining a development status of a separation layer in a coal mine. The method includes: obtaining surface subsidence variation data of the coal mine within a preset time interval, rock stress variation data of a caving zone of the coal mine and water pressure variation data; determining a height decrease of the caving zone based on the rock stress variation data and the water pressure variation data; and determining the development status of the separation layer of the coal mine based on the height decrease and the surface subsidence variation data.
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公开(公告)号：US12091971B2
公开(公告)日：2024-09-17
申请号：US18346104
申请日：2023-06-30
Inventor： Yifan Zeng , Shihao Meng , Qiang Wu , Lu Wang , Shijie Tang , Xuedong Kan , Chao Yu , Han Bao
IPC: E21B47/11 , E21B33/124 , E21C39/00 , E21F16/00
CPC classification number: E21C39/00 , E21B33/1243 , E21B47/11 , E21F16/00
Abstract: A tracer diffusion device includes: a first container, a second container, a drilling pipe, a unidirectional driving device, and a bidirectional driving device. The first container holds a first fluid containing a tracer. The second container holds a second fluid. A first end of the drilling pipe is connected to the first container; a second end of the drilling pipe is extended into a borehole and equipped with a first sealing capsule and a second sealing capsule. A plurality of through holes are arranged on the drilling pipe between the first sealing capsule and the second sealing capsule. The unidirectional driving device is arranged on the drilling pipe, for injecting the first fluid from the first container into the borehole between the first sealing capsule and the second sealing capsule. The bidirectional driving device is arranged between the second container and the first sealing capsule.
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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
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.
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15.发明授权公开(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
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.
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