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公开(公告)号：US20230051333A1
公开(公告)日：2023-02-16
申请号：US17492956
申请日：2021-10-04
发明人： Bo Wang , Xiaozhao Li , Guanqun Zhou , Fuqing Li , Qinghong Dong , Ziwei Qian , Siyuan Hu , Hongyun Chen
摘要： A directional drilling-exploring-monitoring integrated method for guaranteeing safety of an underwater shield tunnel includes: drilling a small-diameter borehole below a water area, and establishing an initial geological model; reaming the small-diameter borehole into a large-diameter borehole, placing a parallel electrical method (PEM) power cable and a monitoring optical fiber cable into the large-diameter borehole, acquiring zero field data, primary field data and secondary field data through carbon rod measurement electrodes before tunnel excavation, and processing the data with an existing inversion method to form an inversion image, thereby obtaining a refined geological model of a stratum; starting the tunnel excavation, and respectively acquiring a disturbance condition of rock and soil and a sedimentation and deformation condition of rock and soil around the tunnel during the excavation, thereby implementing safety excavation of the tunnel; and continuously monitoring the tunnel and the surrounding rock and soil in later use of the tunnel.
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2.发明申请公开(公告)号：US20230030574A1
公开(公告)日：2023-02-02
申请号：US17860063
申请日：2022-07-07
发明人： Shuzhao CHEN , Quansheng LI , Zhiguo CAO , Liu HAN
摘要： The disclosure discloses a method for constructing a pumping-injection well of a groundwater reservoir in a dump of an open-pit mine. The pumping-injection well includes a bottom pipe, intermediate pipes, and a top pipe in sequence from bottom to top connected from bottom to top. The method includes: arranging a rubble barrier around the pumping-injection well, and installing the bottom pipe of the pumping-injection well at a designed position of the pumping-injection well as a center of circle; continuing to install an intermediate pipe on the bottom pipe, and pile up a rubble pile; continuing to stack multiple intermediate pipes, and starting the construction of the groundwater reservoir; discarding discarded materials from the open-pit mine to form a dump; continuing to stack intermediate pipes to build an inverted trapezoidal surface sump around the pumping-injection well; and installing the top pipe and a well cover to form a complete pumping-injection well.
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公开(公告)号：US20220381744A1
公开(公告)日：2022-12-01
申请号：US17745077
申请日：2022-05-16
发明人： Yanan GAO , Donghao LAN , Yudong ZHANG , Yunlong WANG , Peng GUO , Feng GAO
IPC分类号： G01N29/22
摘要： Disclosed is a method for determining a whole macro-micro process of rock deformation and failure based on a four-parameter test, including following steps: firstly, obtaining acoustic emission data and deformation data of a sample in a compression test, and then calculating the deformation data according to a finite deformation theory to obtain a mean rotation angle θ at each stress level; using Grassberger-Procaccia (G-P) algorithm to calculate the acoustic emission data, and obtaining a fractal dimension of a temporal distribution DT of an acoustic emission signal and calculating a fractal dimension of a spatial distribution DS; obtaining a microscopic morphology of a fracture surface by scanning electron microscope (SEM) test after the compression test, and calculating a fractal dimension DA of the fracture surface; finally, obtaining a mathematical trend relationship between θ and DT, DS and DA according to a comprehensive analysis of DT, DS, DA and θ.
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公开(公告)号：US20220333486A1
公开(公告)日：2022-10-20
申请号：US17656423
申请日：2022-03-25
申请人： China University of Mining and Technology , State Energy Investment Group Co. LTD , Jiangsu Vocational Institute of Architectural Technology
发明人： Shuzhao CHEN , Quansheng LI , Liu HAN , Cangyan XIAO
摘要： A method for constructing a dam inside a dump of an inner-dump strip mine includes: taking an upper surface connection line of a primary water-resisting layer as upper filling reference datum boundary of an artificial water-resisting layer; arranging a dam foundation pit and a trapezoidal abutment on a midline of the dam foundation pit; building and reinforcing a step-shaped retaining dam core wall on the artificial water-resisting layer; laying a foundation impervious layer, waterproof geotextile, and an earth blanket on one side, close to the primary aquifer, of the retaining dam core wall; strengthening advance of a dumping working face on one side, away from the primary aquifer, of the retaining dam core wall, and dumping overburden of a strip mine to form a support; filling a space between the earth blanket and the primary aquifer to form a blocker; and proceeding with construction and forming a continuous retaining dam.
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公开(公告)号：US11453832B2
公开(公告)日：2022-09-27
申请号：US17100840
申请日：2020-11-21
申请人： SHANXI COKING COAL GROUP CO., LTD. , CHINA UNIVERSITY OF MINING AND TECHNOLOGY , JIANGSU HYDROCARBON CLEAN ENERGY TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
发明人： Jinfang Liu , Xiahui Gui , Yin Peng , Linsheng Gong , Tiezhu Zhao , Pengde Zhang , Zijian Ma
摘要： An experimental method for coal desulfurization and deashing using permeation and solvating power of a supercritical fluid includes the following steps. The coal sample is ground and loaded into an extraction kettle with a cover. An inlet valve and an outlet valve of the extraction kettle are opened to circulate the supercritical CO2 fluid in the extraction kettle. The extraction kettle is sealed. By adjusting a temperature and a pressure in the extraction kettle, the supercritical CO2 fluid is kept at its critical point and permeates the coal sample to dissolve organic sulfur, inorganic sulfur and ash in the coal sample. The extraction kettle is depressurized, and the temperature in the extraction kettle is adjusted to gasify the supercritical CO2 fluid. The organic sulfur, the inorganic sulfur and part of the ash are separated from the supercritical CO2 fluid and precipitated at a bottom of the extraction kettle.
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公开(公告)号：US20220258176A1
公开(公告)日：2022-08-18
申请号：US17432486
申请日：2020-06-22
发明人： Liang DONG , Yuemin ZHAO , Yongxin REN , Guanghui WANG , Wei DAI , Enhui ZHOU , Chenlong DUAN , Yanjiao LI
摘要： An intelligent control method for a dry dense medium fluidized bed separator includes supplying air to fluidize a bed; estimating an initial bed density according to a washability curve of a raw coal; detecting a magnetic material content in the bed to obtain a real-time bed density, and adjusting the real-time bed density according to a result from an analysis on a deviation from the initial bed density; during separation, adjusting a medium addition amount and a scraper discharge speed to maintain a stability of a bed height; separating the raw coal in the dry dense medium fluidized bed separator to obtain a clean coal product; and detecting a product ash content of the clean coal product, comparing the product ash content with a target ash content, and if a difference between the product ash content and the target ash content exceeds an expectation, adjusting the initial bed density.
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7.发明授权公开(公告)号：US11414991B2
公开(公告)日：2022-08-16
申请号：US17253126
申请日：2019-06-24
发明人： Jixiong Zhang , Yang Ju , A. J. S. (Sam) Spearing , Meng Li , Nan Zhou , Weiqing Zhang
摘要： Provided are a system and a method for monitoring bearing compression rate of a filler in a coal mine gob area. An ground information processing system, a vibration source control system, and a monitoring system are arranged on the ground according to a buried depth of the filler in the gob area. The vibration source control system generates vibration, and transmits a signal to the filler. The monitoring system on the ground receives different reflected waves according to different elasticities of the fillers under different compaction degrees. Final data is transmitted to the ground information processing system for data processing. The monitoring of the filler starts when the filler is filled in the gob area; the filler is gradually compacted. The filler is monitored until the thickness of the filler does not change. Finally, a bearing compression rate formula is utilized to calculate the bearing compression rate of the filler.
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公开(公告)号：US20220251954A1
公开(公告)日：2022-08-11
申请号：US17585923
申请日：2022-01-27
发明人： Yinli BI , Suping PENG
IPC分类号： E21C41/32
摘要： An ecological reconstructed sponge structure of a strip mine dump includes a three-layered sponge ecological structure arranged on a groundmass layer of the dump. From bottom to top, the three-layer sponge ecological structure comprises a water-resisting layer, a water-containing layer and a topsoil ecological layer. A thickness of the water-resisting layer is 100˜200 cm, a permeability coefficient of the water-resisting layer is 0.35˜0.7 m/d, and a degree of compaction is 1200˜1400 KPa. A thickness of the water-containing layer is 150˜250 cm, a permeability coefficient of the water-containing layer is 10˜20 m/d, and a degree of compaction is 800˜900 KPa. A thickness of the topsoil ecological layer is 40˜60 cm. Soil layer thicknesses and water content may be monitored through a ground penetrating radar.
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公开(公告)号：US20220248597A1
公开(公告)日：2022-08-11
申请号：US17586056
申请日：2022-01-27
申请人： Xi'an University of Science and Technology , China University of Mining and Technology (Beijing)
发明人： Yinli BI , Shaopeng MA , Yakun GAO , Longjie ZHANG , Huili ZHOU
摘要： An aerial seeding bioremediation method for a coal mining subsidence area. The method includes obtaining a topographic map of the coal mining subsidence area; grading the topographic map in terms of ground slopes; determining seeding coefficients of aerial seeding operation according to a grading result of the ground slopes and ground coverage rates of the coal mining subsidence area; determining height adjustment parameters during unmanned aerial vehicle, UAV, aerial seeding; and performing, by a UVA, the aerial seeding operation according the grading result of the ground slopes, the seeding coefficients of the aerial seeding operation, and the height adjustment parameters. A slop grading technical standard of aerial seeding determined by the method of the present disclosure is applicable to complex topography of the coal mining subsidence area and helps with safety of the UVA.
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公开(公告)号：US20220176411A1
公开(公告)日：2022-06-09
申请号：US17598890
申请日：2020-02-29
发明人： Yuemin ZHAO , Jesse ZHU , Chenyang ZHOU , Zhijie FU , Zhenfu LUO , Chenlong DUAN
摘要： Provided is a gas-solid fluidized bed dry beneficiation process using a beneficiation density gradient, including: in a dry beneficiation system of a gas-solid fluidized bed, selecting coarse particles and fine particles; placing the coarse particles at a bottom of the dry beneficiation system, and placing the fine particles above the coarse particles, wherein the coarse particles and the fine particles are separated under an initial condition; under an effect of a gas flow, the coarse particles and the fine particles being fluidized to form a high-density beneficiation region and a low-density beneficiation region, respectively, and the coarse particles and the fine particles being mixed at a contact interface to form an intermediate-density beneficiation region; and feeding minerals to be beneficiated from an upper portion of the dry beneficiation system to pass through the low-density beneficiation region, the intermediate-density beneficiation region, and the high-density beneficiation region in sequence.
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