XI'AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Du, Junwu
Huang, Qingxiang
Li, Yongle
Abstract
Disclosed is an angle-adjustable three-dimensional physical simulation device for equivalent coal seam mining, which comprises a base, a frame, a loading frame, an angle-adjusting device, a limiting plate and a lifting combined module. The top of the base is fixedly connected with the frame; the top of the frame is fixedly connected with the loading frame; the angle-adjusting device is located between the base and the frame; the bottom of the frame is fixedly connected with the limiting plate; the limiting plate is penetrated with a lifting combined module; the lifting combined module comprises a plurality of lifting pieces, and the lifting pieces comprise bolts and cushion blocks; the bolt penetrates through the limiting plate and is in threaded connection with the limiting plate; and one end in the bolt frame is rotatably connected with the cushion block.
G09B 25/02 - Models for purposes not provided for in group , e.g. full-sized devices for demonstration purposes of industrial processesModels for purposes not provided for in group , e.g. full-sized devices for demonstration purposes of machinery
XI’AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Du, Junwu
Huang, Qingxiang
Li, Yongle
Abstract
An angle-adjustable equivalent coal seam mining three-dimensional physical simulation apparatus, which comprises a base (1), a frame (2) is arranged a top part of the base (1), a loading frame (3) is arranged at a top part of the frame (2), an angle adjustment apparatus is arranged between the base (1) and the frame (2), a limiting plate (5) is fixed at a bottom part of the frame (2), a rise and drop combination module (4) is arranged on the limiting plate (5) and passes through said plate, the rise and drop combination module (4) comprises a plurality of rise and drop members, each rise and drop member comprises a bolt (7), each bolt passes through the limiting plate (5) and is threadedly connected to the limiting plate (5), and an end of each bolt (7) located within the frame (2) is rotatably connected to a pad block (8). The present three-dimensional physical simulation apparatus can solve the difficult technical problems of coal seam excavation and inclined coal seam simulation, water preservation mining simulation, etc. by a current three-dimensional physical simulation apparatus, a three-dimensional spatial region of a project prototype is effectively simulated, and accurate, flexible, and convenient three-dimensional physical simulation experiments having low labor intensity are implemented.
Xi'an University of Science and Technology (China)
China University of Mining and Technology (Beijing) (China)
Inventor
Bi, Yinli
Ma, Shaopeng
Gao, Yakun
Zhang, Longjie
Zhou, Huili
Abstract
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.
XI'AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Liu, Shu Lin
Shen, Yi Jun
Li, Xue Ting
Peng, Yin Qiao
Yan, Ji Zhi
Abstract
The present disclosure provides a forward converter with secondary LCD connected in series to realize excitation energy transfer, comprising a forward converter main circuit and an energy transfer and transmission circuit. The forward converter main circuit includes a high-frequency transformer T, a switching tube S, a diode D1, a diode D2, an inductance L1, and a capacitor C1. The energy transfer and transmission circuit includes a diode D3, a capacitor C2, and an inductance L2. The circuit structure of the present disclosure has simple circuit structure and high reliability. And the reverse recovery problem of the diode could be eliminated by the soft switch-off or soft switch-on of the switching tube, which further reducing the loss of switching tube and diodes and improving the overall efficiency. In addition, the excitation energy could be transferred to the load side to improve the energy transmission efficiency.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
XI'AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
YUNNAN BAIYAO GROUP HEALTH PRODUCT CO., LTD. (China)
Inventor
He, Yongjun
Ning, Kegong
Abstract
A method for making a composition for enamel regeneration proposes to encapsulate soluble calcium and phosphate salts within corresponding internal water phases in respective water-in-oil-in-water emulsions stabilized by solid particles, and add them to a toothpaste, enamel restoring gel or mouth wash base. In this way, the soluble calcium and phosphate salts can be present stably in the toothpaste, enamel restoring gel or mouth wash over a long period of time. When the toothpaste, enamel restoring gel or mouth wash of the present disclosure is used in oral cavity, the water-in-oil-in-water emulsions rapture under the effect of friction and pressing, releasing the soluble calcium and phosphate salts encapsulated within the corresponding internal water phases. As a result, the liquid in the user's oral cavity will contain high concentrations of calcium and phosphate ions, which can enhance the rate of enamel remineralization.
A61K 8/81 - Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
A61K 8/96 - Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof, of undetermined constitution
6.
Method for making toothpaste enabling enamel restoration
Yunnan Baiyao Group Health Product Co.,Ltd. (China)
Xi'an University of Science and Technology (China)
Inventor
Ning, Kegong
He, Yongjun
Abstract
A method for making a toothpaste enabling enamel restoration proposes to encapsulate soluble calcium and phosphate salts within corresponding internal water phases in respective water-in-oil-in-water emulsions. In this way, the soluble calcium and phosphate salts can be present stably in the toothpaste over a long period of time without causing precipitation of calcium phosphate. When the toothpaste of the present disclosure is used in brushing teeth, the water-in-oil-in-water emulsions are ruptured under the effect of friction and pressing, releasing the soluble calcium and/or phosphate salts encapsulated within the corresponding internal water phases. As a result, the liquid in the user's oral cavity will contain high concentrations of calcium and phosphate ions, which can enhance the rate of remineralization of enamel and/or dentin exposed to the oral cavity.
XI AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Zhang, Chenghua
Abstract
A lattice composite wellbore structure and a construction method therefor. The lattice composite wellbore structure comprises outer wellbores and an inner wellbore (1) provided therein. An outer wall of the inner wellbore (1) is connected to an inner wall of the outer wellbore by means of concrete. The outer wellbore consists of two first cylinder walls (3) and two second cylinder walls (4) sequentially surrounding and provided at intervals. The first cylinder wall (3) comprises a first steel mixed layer and a thermal insulation plate (5) provided on an outer wall of the first steel mixed layer. The second cylinder wall (4) comprises a second steel mixed layer and a thermal insulation plate (5) provided on an outer wall of the second steel mixed layer. Both the first steel mixed layer and the second steel mixed layer comprise a profiled steel skeleton and concrete (6) poured around the profiled steel skeleton. Two inner ends of the first steel mixed layer shrink inward to form a limit groove (7). Two inner ends of the second steel mixed layer extend outward to form a limit block (8) matching the limit groove (7).
XI'AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Wan, Qiong
Li, Zhiyan
Zhou, Xuhui
Zhang, Li
Yu, Liu
Wang, Kai
Xue, Tiening
Zhang, Xinyan
Ju, Kai
Gu, Shuancheng
Abstract
The present invention discloses a small integrated greening device and method for recycling wastewater, including a wastewater collection system, a microorganism and plant purification system, and a reclaimed water collection and distribution system. The method includes the following process: greywater or wastewater is collected through a pipeline and enters a water collection tank of a wastewater collection part. Lifting is performed by submersible sewage pumps, such that the lifted water enters a microorganism and plant synergistic purification and greening part. Each submersible pump is controlled by one corresponding automatic water level controller to transport the treated water to the reclaimed water-use sites. The device and method provided by the present invention utilize the physical and chemical action of a filler and the synergistic purification effect of microorganisms and plants to purify the greywater, and the purified reclaimed water is used for flushing toilets, watering trees or other purposes.
XI'AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Xie, Panshi
Zhang, Yingyi
Zhang, Yanli
Tian, Shuangqi
Duan, Jianjie
Abstract
Disclosed is a multi-section non-pillar staggered protected roadway for a deep inclined thick coal seam (DITCS) and a method for coal pillar filling between sections. The multi-section non-pillar staggered protected roadway includes a floor, a coal seam, an immediate roof, and a basic roof in a multi-section coal seam, where the floor is disposed below the coal seam, a hydraulic support is disposed in a section between the floor and the immediate roof; a return airway and a transportation roadway are respectively disposed on a left side and a right side of each section; the return airway and the transportation roadway in each section are communicated with each other through a working face; and non-pillar staggered layout is used for a return airway of a next section and a transportation roadway of a current section.
E21C 41/18 - Methods of underground miningLayouts therefor for brown or hard coal
E21D 23/00 - Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyors, mining machines or guides therefor
E21C 27/02 - Machines which completely free the mineral from the seam solely by slitting
10.
A SEEPAGE-CREEP AND MECHANICAL EXPERIMENTAL SYSTEM FOR COAL AND ROCK MASS CONTAINING GAS UNDER TRIAXIAL LOADING IN LOW-TEMPERATURE ENVIRONMENT
XI'AN UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
Inventor
Qin, Lei
Zhai, Cheng
Li, Shugang
Lin, Haifei
Liu, Chao
Zhang, Chao
Cheng, Lianhua
Yan, Min
Xiao, Peng
Zhao, Pengxiang
Abstract
A seepage-creep and mechanical experimental system for coal and rock mass containing gas under triaxial loading in low-temperature environment. The system includes a gas booster system, a pressure measurement system, a core holder (20) and a triaxial pressure control system. The system can simulate seepage-creep and mechanical evolution process of coal and rock mass in low-temperature environment under the condition of real formations. Meanwhile, it provides an experimental platform for simulating the extraction of gas or shale gas under triaxial loading from coal and rock mass by increasing permeability through fracturing at low temperature. Furthermore, the system can be used to quantitatively study physical property parameters of frozen in-situ coal and rock mass, providing scientific experimental data and theoretical bases for field application of coal seams with permeability improved through fracturing at low temperature.
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