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公开(公告)号：US10301939B2
公开(公告)日：2019-05-28
申请号：US15770500
申请日：2016-11-18
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY , Pingdingshan Tianan Coal Mining Co., LTD , China Pingmei Shenma Energy and Chemical Industry Group Co., LTD , Xuzhou ZhongAn Science & Technology Co., Ltd.
Inventor： Jixiong Zhang , Jianguo Zhang , Qiang Zhang , Qiang Sun , Wei Yin , WeiQing Zhang , Hao Yan
Abstract: Disclosed is a method for designing supporting parameters of a transition support for a mixed mining face of filling and fully-mechanized mining. The method includes: first, determining a total length of a mixed mining working face and a length of a filling section according to requirements of a coal mining production capacity of the mixed mining working face and a filling capacity of the filling section working face; then, establishing a mixed mining numerical model of filling and fully-mechanized mining by using three-dimensional distinct element software, and simulating and calculating a caving height of a roof of a transition section and a stress influence range of the transition section when a filling rate of a mined-out area of the filling section changes; based on a result of numerical simulation and calculation, performing curve fitting according to a correlation coefficient to obtain a functional relationship between the filling rate and the caving height and a functional relationship between the filling rate and the stress influence range of the transition section; and finally designing supporting parameters of a transition support in combination with actual engineering geological parameters. The method can provide a reference for supporting design of a support, and enables a smooth transition between a filling support and a fully-mechanized mining support for a mixed working face, thereby further enriching filling mining theories and expanding the application range of filling mining.
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192.发明申请公开(公告)号：US20190145260A1
公开(公告)日：2019-05-16
申请号：US16098131
申请日：2017-12-01
Applicant: China University of Mining and Technology
Inventor： Baiquan LIN , Tong LIU , Ting LIU , Wei YANG , He LI , Rui WANG , Zheng WANG
IPC: E21F7/00
Abstract: A method for constructing networked preferential gas migration pathways and diverting and extracting gas. The method proposes that a fracture generation hole, a fracture guidance and development hole, a lateral rupture hole, and a fracture connection hole are respectively constructed in a roof in roadways on two sides of a working face in advance of an advance stress change area. Artificial guided fractures are actively constructed and formed inside the hard roof. Under a mining-induced stress effect, the artificial guided fractures and mining-induced fractures intersect with and are connected to each other to form networked preferential gas migration pathways. Meanwhile, boreholes for artificial guided fractures accelerate roof fracturing to form a rupture bed separation fracture area in a roof. Gas flows and migrates in a timely and efficient manner along networked fracture pathways and concentrates in the rupture bed separation fracture area in the roof.
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193.发明申请公开(公告)号：US20190086574A1
公开(公告)日：2019-03-21
申请号：US16132505
申请日：2018-09-17
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: G01V3/08
Abstract: Disclosed is a three-dimensional directional transient electromagnetic advanced detection device, wherein the CPU and the bus communication end of the transient electromagnetic transmitting module are both connected to the system bus, the signal output end of the transient electromagnetic transmitting module is connected to the transient electromagnetic transmitting coil outside the borehole to be detected, the signal input end of the electromagnetic signal receiving module is connected to the signal output ends of the three-dimensional magnetic field sensor and the one-dimensional Z-directional electric field sensor, the signal output end of the electromagnetic signal receiving module is connected to the electromagnetic signal input end of the SCM, the communication end of the first memory is connected to the data storage end of the SCM, the communication end of the three-dimensional electronic compass is connected to the compass signal communication end of the SCM, the host data communication of the SCM is connected to the second optical cable port of the local host through the first optical cable port and the optical cable. The device can detect harmful geological bodies such as aquifer and water-conducting channels and make a intensive and effective detection forecast.
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194.发明申请公开(公告)号：US20190071967A1
公开(公告)日：2019-03-07
申请号：US15767132
申请日：2016-11-18
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Jixiong ZHANG , Qiang ZHANG , Qiang SUN , Xiancheng MEI
Abstract: A mining design method for an upper protective layer in coal seam mining, and provides a mining design method for a near-whole rock upper protective layer. Based on information about engineering geologic conditions of a protective layer mining well and physico-mechanical parameters of a coal-rock mass sample, a protective layer mining thickness M and an interval H between the protective layer and the protected layer are determined by means of numerical analysis such that an expansion deformation rate φ of a protected layer, a failure depth K of a floor plastic zone of a protective layer, and a coal seam gas pressure P meet the Provision in Prevention and Control of Coal and Gas Outburst. Then, according to a mining thickness percentage accounted by rock in the near-whole rock upper protective layer, a mining process of the near-whole rock protective layer is determined from among a traditional fully-mechanized coal mining process, a traditional fully-mechanized coal mining process assisted by single-row hole pre-splitting blasting, and a traditional fully-mechanized coal mining process assisted by double-row twisted hole blasting. This method provides a theoretical basis for safe mining of a low-permeability gas-rich coal seam without a regular protective layer, and further enriches mining design methods with a protective layer. This method is economically efficient, safe and efficient, and has a wide applicability.
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公开(公告)号：US10173846B2
公开(公告)日：2019-01-08
申请号：US15564659
申请日：2015-12-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Shanguo Yang , Wei Li , Ning Jia , Qingwei Ben , Linjiang Xia
Abstract: A scraper conveyor chain tensioning device having a sweeping function, comprising a transmission device (2), a steering chain wheel (3), scraper chains (4), and ledges (5), wherein a chain tensioning device (1) is arranged above the scraper chains (4) arranged at the side of the steering chain wheel (3), the chain tensioning device (1) is provided with a sweeping device (12), the chain tensioning device (1) comprises a slider-crank mechanism and two chutes (13) symmetrically fixed to the ledges (5) on two sides at an inclined angle, a tensioning shaft (19) is arranged between the two chutes (13), the tensioning shaft (19) is arranged on a bearing seat (18) via a bearing, and the middle part of the tensioning shaft (19) is provided with a tensioning chain wheel (11) matching with a transmission chain; and the sweeping device (12) comprises a tensioning shaft sleeve (12-3), a plurality of groups of sweeping heads (12-2) is arranged on the circumference of the tensioning shaft sleeve (12-3) at intervals, and the sweeping heads (12-2) are fixed to the tensioning shaft sleeve (12-3) via springs (12-1). Caking coal on a scraper can be swept via scraping teeth on sweeping heads (12-2), the problems of friction, chain jumping and jamming caused by the caking coal on the scraper are solved, the scraper conveyor chain tensioning device is applicable to a middle double-chain scraper conveyor, the change on an original scraper conveyor is small, and pure mechanical transmission is adopted, thereby being simple in mechanism, convenient to assemble and disassemble, and reliable in operation.
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Patent Agency Ranking
196.发明申请公开(公告)号：US20180371907A1
公开(公告)日：2018-12-27
申请号：US15744061
申请日：2017-06-07
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Nong ZHANG , Zhengzheng XIE , Changliang HAN , Dongjiang PAN
Abstract: The present invention provides a full-roadway full-process full-cross-section deformation monitoring device and a monitoring method thereof, which are applicable to the field of roadway surface deformation monitoring. A monitoring station is deployed utilizing an anchor rope, a supporting frame and a rotary laser measuring device are connected via a threaded sleeve at the tail end of the anchor rope, the rotary laser measuring device can rotate and drive a laser range finder to rotate, the data of a plurality of cross sections can be measured at the same time with one monitoring station, the data is processed by computer programming, so that the measurement data is converted into coordinates in a three-dimensional coordinate system, and thereby full-roadway full-process full-cross-section digital imaging is realized. The monitoring method attains high measuring accuracy, involves very low artificial error, supports intuitive observation of dynamic roadway deformation condition, can provide accurate warning for roof pressure condition, and provides a technical guarantee for safety of the downhole workers.
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公开(公告)号：US20180365843A1
公开(公告)日：2018-12-20
申请号：US15739779
申请日：2015-11-09
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Deqiang CHENG , Leida LI , Hai LIU , Guopeng ZHANG , Wei CHEN , Songyong LIU
CPC classification number: G06T7/248 , G06K9/00718 , G06K9/6202 , G06K9/80 , G06K2209/21 , G06T7/13 , G06T7/20 , G06T2207/10016 , G06T2207/20221
Abstract: A method for tracking a moving target based on an optical flow method, including, providing video images, and implementing pre-processing of the images to generate pre-processed images; implementing edge-detection of the pre-processed images and using an optical flow method to extract target information from the pre-processed images, and on the basis of a combination of the edge-detection information and the extracted target information, generating a complete moving target; using an optical flow method to perform estimation analysis of the moving target and using a forward-backward error algorithm based on feature point trace to eliminate light-generated false matching points; and creating a template image and implementing template image matching to track the moving target. The method and system for tracking a moving target based on an optical flow method have the advantages of accurate and complete extraction and the ability to implement stable tracking over a long period of time.
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公开(公告)号：US10113854B2
公开(公告)日：2018-10-30
申请号：US15116800
申请日：2015-06-16
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Jixiong Zhang , Wenyue Qi , Qiang Zhang , Peng Huang , Qiang Sun
Abstract: Disclosed is a device for detecting wall abrasion of a solid-filling feeding well and a detection method thereof. The device comprises a well wall abrasion detector, a horizontal displacement meter, a vertical displacement monitor, and a limit guide rod. One end of the limit guide rod is connected to the well wall abrasion detector. The signal output terminal of the well wall abrasion detector is connected to the signal input terminal of the horizontal displacement meter, and the other end of the limit guide rod passes through the vertical displacement monitor for slidable setting. This disclosure mainly utilizes a resistance strain displacement sensor to detect the abrasion and deformation degree of the well wall, determines the position of damages with the vertical displacement monitor, and draws wall abrasion curves by using the obtained data. The device provided is easy to use, has low cost, has high reliability, and can effectively detect the wall abrasion condition of a solid-filling feeding well, thereby providing a basis for ensuring the working efficiency of the feeding well.
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公开(公告)号：US10082433B2
公开(公告)日：2018-09-25
申请号：US15318877
申请日：2015-07-31
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Enyuan Wang , Yabo Wang , Xiaofei Liu , Siheng Wang
CPC classification number: G01L5/0004 , E21C39/00 , E21F17/18
Abstract: A multipoint coal and rock mass stress real-time monitoring device is provided. The device is composed of a plurality of capsule pressure sensors (1), connection rods (2), three-way valves (3), a multichannel monitor (4), a multichannel control valve (5), first high-pressure oil pipes (6), second high-pressure oil pipes (7), third high-pressure oil pipes (8), a four high-pressure oil pipe (9), a high-pressure oil pump (10) and monitoring substations (11). A multipoint coal and rock mass stress real-time monitoring method is also provided.
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公开(公告)号：US20180265339A1
公开(公告)日：2018-09-20
申请号：US15539175
申请日：2015-12-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Zhencai ZHU , Guohua CAO , Naige WANG , Lu YAN , Lei WEI , Lei WANG , Weihong PENG , Wei LI , Gongbo ZHOU , Yuxing PENG
CPC classification number: B66F11/044 , B66B7/046 , B66B17/12 , B66F11/04 , B66F17/00 , B66F17/006 , B66F2700/09
Abstract: An eccentric loading adjusting mechanism (5) and method for a parallel suspension platform. The adjusting mechanism (5) comprises a rotary platform (5-2) and a support guide frame (5-3) disposed on the rotary platform (5-2), wherein the base of the rotary platform (5-2) is fixedly connected to a suspension platform (4); a circular guide rail (5-8) is provided around the rotary platform (5-2); the support guide frame (5-3) is provided with two counterweight guide rails (5-15) and is connected to a rotary table of the rotary platform (5-2) by means of a rotary plate (5-17) on the support guide frame (5-3); and an electric drive pusher (5-6) drives a counterweight means (5-9) to move along the two counterweight guide rails (5-15), thereby eliminating eccentric loading.
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