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181.发明申请公开(公告)号：US20200325775A1
公开(公告)日：2020-10-15
申请号：US16666499
申请日：2019-10-29
Inventor： Jiachen Wang , Shengli Yang , Hao Yue , Zhaohui Wang , Lianghui Li
IPC: E21C41/18 , E21B47/026 , G01V3/38 , H04W4/02
Abstract: Disclosed are systems and methods for acquiring movement information of a high-level rock stratum (HLRS) in a coal mine stope. The system includes information acquisition, information acquisition transfer, information storage and rock stratum position-state information analysis modules that are sequentially connected wireles sly; the information acquisition module is disposed in a drill hole of the HLRS; the information acquisition transfer module is disposed below the information acquisition module; the information storage module is disposed in a working area of the stope; the rock stratum position-state information analysis module is disposed in a haulage roadway of the stope. Movement information, acquired by the information acquisition module, of the HLRS is transferred to the storage module via the information acquisition transfer module in real time, and then is transmitted to the rock stratum position-state information analysis module for real-time processing, thereby obtaining the movement information of the HLRS and predicting a movement trend.
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182.发明申请公开(公告)号：US20200300090A1
公开(公告)日：2020-09-24
申请号：US16605122
申请日：2017-06-06
Applicant: China University of Mining and Technology
Inventor： Feng Ju , Shuai Guo , Zhipeng Fu , Peng Huang , Pingshan Li , Yunfei Liu
IPC: E21F15/00
Abstract: A method for controlling a subsidence area caused by underground mining in an adjoining open-pit mine, applied in an open-pit and underground coordinated mining process. In the method, a ground subsidence area caused by underground mining and production is directly filled and covered with overburden materials such as soil and rock discharged from an adjoining open-pit mine; small and medium fracture zones and large fracture zones caused by mining are timely backfilled, tamped, and levelled according to areas before the ground subsidence area appears, the thickness of the levelled soil layer is kept above 1 m, and the area slope is controlled within 7°. By fully using overburden materials from an adjoining open-pit mine, the method controls a subsidence area caused by underground mining and greatly shortens the discharge distance of the overburden materials from the adjoining open-pit mine, also solves the safety problems such as air leakage and spontaneous combustion of coal caused by fractures in mine subsidence, and brings significant economic and social benefits.
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公开(公告)号：US20200217201A1
公开(公告)日：2020-07-09
申请号：US15751808
申请日：2017-06-07
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Nong ZHANG , Peng MA , Changliang HAN , Zhengzheng XIE
Abstract: Provided is a mounting method for an extensible reaming self-anchoring anchor rod, which is especially applicable to roadway construction in coal mines. A big helical structure is arranged on two rod sections of a sectional type anchor rod, a simple drill bit drills and reams a bore and cuts the coal mass in one operation, the outer diameter of the simple drill bit is smaller than the outer diameter of the big helical rod body, and the big helical structure accomplishes secondary reaming, self-drilling and self-anchoring in the drilling process; the big helical structure inhibits propagation and development of sheet cracks of the coal wall in the radial direction, and is embedded in the coal mass through a self-stabilization process of the rock mass.
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公开(公告)号：US10697873B2
公开(公告)日：2020-06-30
申请号：US16091523
申请日：2017-11-16
Applicant: China University of Mining and Technology , XUZHOU ZHONAN SCIENCE&TECHNOLOGY CO., LTD , China Pingmei Shenma Energy and Chemical Industry Group Co., LTD , Pingdingshan Tianan Coal Mining Co., LTD
Inventor： Jixiong Zhang , Xiaole Han , Qiang Zhang , Lixin Lan , Yadong Chen , Yang Tai
Abstract: A method for determining a physical similarity simulation material of a solid backfill body is provided. A compaction test is run on a gangue backfill body in a lab, to obtain a ε-σ curve regarding the gangue backfill body in the compaction process. Backfill blocks are made by using a thin wood board, sponge, and a paper sheet in different proportions, and then an unconfined compression test is separately run on the backfill blocks used for physical similarity simulation, to obtain εi-σi curves regarding the backfill blocks in the compression process. A sum of squared errors Σ(εi−ε0)2 is introduced to separately calculate a sum of squared errors of the backfill block and that of the gangue backfill body, and accordingly an error between ε-σ curves regarding the test block and the gangue backfill body is determined. Finally, a backfill block for which the sum of squared errors is less than 0.5 is determined as a physical similarity simulation material of the gangue backfill body. By fabrication and selection of similar materials, the present invention can reduce an error caused by a selected backfilling material during a physical similarity simulation experiment, guaranteeing the accuracy of the physical similarity simulation experiment for solid backfill mining.
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185.发明授权公开(公告)号：US10655465B2
公开(公告)日：2020-05-19
申请号：US16334761
申请日：2018-08-03
Inventor： Caiping Lu , Heng Zhang , Yang Liu , Ding Li
Abstract: Disclosed is a method for rock burst prevention by active support reinforcement and active pressure relief. The method comprises the following steps: A. rating a burst tendency based on a comprehensive index method: determining a zone as a general risk region or a mediate risk region by using a comprehensive index method; B. predicting a burst risk region and determining pressure relief borehole parameters in real time by using a drill cuttings method: determining borehole parameters of the general risk region and the mediate risk region; C. drilling holes after determining arrangement patterns of large-diameter pressure relief boreholes according to different burst risk levels; D. forming a “coal wall-bolt-grouting hole sealing” support reinforcement system through a roadway support system; and E. monitoring a pressure relief effect of the support reinforcement system: until a required effect of preventing bursts by pressure relief is achieved while the support is reinforced. The present invention can not only achieve an effect of preventing rock bursts by pressure relief but also enhance the integrity of a coal wall in a roadway excavation process, thereby achieving the objective of rock burst prevention by active support reinforcement and active pressure relief.
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Patent Agency Ranking
186.发明授权公开(公告)号：US10648894B2
公开(公告)日：2020-05-12
申请号：US16477850
申请日：2018-03-23
Inventor： Yang Ju , Zhangyu Ren , Li Wang , Lingtao Mao , Hongbin Liu
Abstract: A method for measuring the dynamic stress field evolution law of a complex heterogeneous structure, comprising: preparing a transparent photosensitive resin model of a complex heterogeneous structure by means of three-dimensional (3D) printing technology to serve as a test piece (S101); placing the test piece in a light path of a circularly polarized light dark field, performing continuous stress loading on the test piece, and recording images (S102); acquiring a plurality of continuously changing full-field stress fringe grayscale images according to videos generated by the image recording (S103); then acquiring grayscale value change sequences of pixel points at each position in the images (S104); and finally, calculating full-field fringe orders under continuous loading conditions according to the relation between the grayscale values and the fringe orders so as to calculate full-field stress values under the continuous loading conditions (S105). Thus, it is possible to extract and quantify the global dynamic stress field evolution law of a complex heterogeneous structure subjected to high exterior load under fixed light field conditions.
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公开(公告)号：US20200091945A1
公开(公告)日：2020-03-19
申请号：US16076686
申请日：2017-12-27
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY , XUZHOU ZHIRUN MINING EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD
Inventor： Gongbo ZHOU , Zhencai ZHU , Hao CHEN , Houlian WANG , Chaoquan TANG , Wei LI , Guohua CAO , Yuxing PENG , Gang SHEN
Abstract: The present invention discloses a wireless sensor node with a hierarchical protection structure, including a node hardware circuit and a node hierarchical protection structure. The node hardware circuit includes a sensor module, a data processor module and a wireless communication module, and the node hierarchical protection structure includes a primary sealed protection structure and a secondary strengthened protection structure; the primary sealed protection structure includes an ABS spherical inner shell; the data processor module and the wireless communication module are disposed in the ABS spherical inner shell; gaps in the ABS spherical inner shell are filled with EPE cushioning foam; a flame-retardant and thermal-insulating layer made of a nanometer aerogel insulation blanket is covered on the outside of the ABS spherical inner shell; the secondary strengthened protection structure includes a spherical nylon outer shell with vent holes; the spherical nylon outer shell and the ABS spherical inner shell are connected with each other through support of rubber dampers; and the sensor module is disposed in the spherical nylon outer shell. The node according to the present invention can be deployed by ejection, is highly adaptive to catastrophes, can acquire environmental information effectively, and has relatively low costs.
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公开(公告)号：US20200024930A1
公开(公告)日：2020-01-23
申请号：US16485116
申请日：2017-12-27
Applicant: China University of Mining and Technology , Xuzhou Relimap Information Technology Co., Ltd. , Jiangsu Normal University , Southeast University
Inventor： Hui Yang , Li Yang , Gefei Feng , Xiaodong Xu , Yong Qin , Yaqin Sun , Hui Ci , Lifang Xue
Abstract: The present invention discloses a method for optimizing sensor network node location in a geological CO2 storage area. In the method, by analyzing data in a monitoring area, such as geological data, geographical data, and meteorological data, analyzing influence factors of a CO2 leakage event and determining a sensitivity partition, designing different coverage control schemes of monitoring sensor network nodes, or intensively or sparsely arranging sensor monitoring nodes, a coverage network is described and optimally expressed on the basis of Delaunay triangulation. In the method for optimizing sensor network node location in a geological carbon dioxide storage area, the arrangement density of wireless sensor network nodes can be dynamically adjusted according to geological and geographical features of a detection area, and the arrangement optimization of a dynamic monitoring sensor network for coal seam carbon dioxide injection area leakage can be realized. The method reduces node redundancy and communication overheads as much as possible, and has strong network coverage and network connectivity.
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公开(公告)号：US20190286174A1
公开(公告)日：2019-09-19
申请号：US16318707
申请日：2017-12-04
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY , JIANGSU XINCHUANG SAFETY TECHNOLOGY RESEARCH INSTITUTE CO., LTD
Inventor： Fubao ZHOU , Yifan ZHANG , Xiaolin SONG
IPC: G05D11/13 , E21F7/00 , F04B45/04 , F04B23/08 , F04B23/02 , F04B43/00 , F04B15/00 , B01F1/00 , B01F7/16
Abstract: The present invention discloses a closed circulation system for improving operating efficiency of a gas drainage pump. A liquid inlet of a pneumatic diaphragm pump is connected to a liquid outlet of a drag-reducing polymer solution tank, and a liquid outlet pipe of the pneumatic diaphragm pump leads to a circulation water pool. The drag-reducing polymer solution tank is provided with a pneumatic stirrer internally, and a charging hopper at the top. A liquid outlet of a submersible pump is connected to a liquid inlet of the drag-reducing polymer solution tank and a liquid inlet of a gas drainage pump respectively through a three way pipe, and a liquid discharge pipe of the gas drainage pump is connected to the circulation water pool. The pneumatic stirrer and the pneumatic diaphragm pump operate at high speeds.
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190.发明授权公开(公告)号：US10378327B2
公开(公告)日：2019-08-13
申请号：US15321891
申请日：2015-12-22
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Baiquan Lin , Quanle Zou , Ting Liu , Chang Guo , Chuanjie Zhu , Jia Kong , Fazhi Yan , Hao Yao , Yidou Hong
IPC: E21B36/00 , E21B43/24 , E21B43/267 , E21F7/00 , E21B43/114
Abstract: A gas extraction method in which high energy gas fracturing technology is used to form a fracture network in a thermal injection borehole. Then high-pressure, cyclically temperature-changing steam is injected into the borehole using a spinning oscillating-pulse jet nozzle to form oscillating superheated steam, alternatingly impacting and heating the coal body. The high energy gas forms a fracture network that provides channels for passage of the superheated steam, while oscillating changes in steam temperature and pressure also promote crack propagation and perforation of the coal body; the combined effect of alternation of the two enhances gas desorption and extraction efficiency.
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