公开(公告)号：US20220381744A1

公开(公告)日：2022-12-01

申请号：US17745077

申请日：2022-05-16

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY

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.

公开(公告)号：US20210340870A1

公开(公告)日：2021-11-04

申请号：US16473956

申请日：2018-03-23

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  SHENZHEN UNIVERSITY

发明人： Yang JU ,  Heping XIE ,  Yong ZHANG ,  Yan ZHU ,  Feng GAO ,  Xiaodong NIE ,  Changbing WAN ,  Jinxin SONG ,  Chang LU ,  Hongbin LIU ,  Zhangyu REN

IPC分类号： E21C41/18 ,  E21C25/16 ,  B03B5/18 ,  C10G1/00 ,  C10J3/50 ,  E21C35/24 ,  E21C35/20

摘要： An automatic coal mining machine and a fluidized coal mining method are provided. A first excavation cabin is configured to cut coal seam to obtain raw coal and to be transported to a first coal preparation cabin for separating coal blocks from gangue. Then, the obtained coal blocks are transported to a first fluidized conversion reaction cabin. The first fluidized conversion reaction cabin converts the energy form of the coal block into liquid, gas or electric energy, which is transported to a first energy storage cabin for storing. Coal mining and conversion are carried out in underground coal mines, so it is not necessary to raise coal blocks to the ground for washing and conversion, thereby reducing the transportation cost of coal, improving the utilization degree of coal, and avoiding the pollution of the ground environment caused by waste in the mining and conversion process.

公开(公告)号：US20210003008A1

公开(公告)日：2021-01-07

申请号：US16467490

申请日：2018-03-23

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING ,  SHENZHEN UNIVERSITY

发明人： Yang JU ,  Heping XIE ,  Yong ZHANG ,  Yan ZHU ,  Feng GAO ,  Xiaodong NIE ,  Changbing WAN ,  Jinxin SONG ,  Chang LU ,  Hongbin LIU ,  Zhangyu REN

IPC分类号： E21C41/18 ,  E21C45/00

摘要： A mine field layout method suitable for fluidized mining of coal resources is provided. A main shaft and an air shaft are provided in the mine field, the bottom of the main shaft is located in the shallow horizontal coal seam zone, and the bottom of the air shaft is located in the deep horizontal coal seam zone. The horizontal main roadways are arranged at two boundaries along the strike of the coal seam, and inclined main roadways are arranged at two boundaries along the dip direction of the coal seam. Connecting roadways are located inside the mine field and are in communication with the horizontal main roadways. In the coal mining stage, the coal resources can be converted into the fluidized energy product and/or electricity by an unmanned automatic mining machine.