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

IPC分类号： E21F16/00 ,  E02B7/02

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.

公开(公告)号：US20220243590A1

公开(公告)日：2022-08-04

申请号：US17565432

申请日：2021-12-29

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY ,  JIANGSU VOCATIONAL INSTITUTE OF ARCHITECTURAL TECHNOLOGY

发明人： Shuzhao CHEN ,  Cangyan XIAO ,  Liu HAN

IPC分类号： E21C41/18 ,  E21F15/00

摘要： The present invention discloses a dendritic reverse underground mining method for a thin coal seam at an end slope of a strip mine. The method includes the following steps: step S1: using a continuous coal mining machine to excavate a main adit toward a boundary of the strip mine along a seam floor; step S2: excavating secondary adits on two sides of the main adit obliquely in a forward direction of the main adit; step S3: transporting the excavated coal out of the main adit by the self-moving belt conveyors; step S4: after the excavating of a secondary adit of the secondary adits is ended, withdrawing the continuous coal mining machine and the self-moving belt conveyor from the secondary adit, and then excavating subsequent secondary adits of the secondary adits in a similar way; step S5: filling the secondary adits, and filling a goaf of the main adit.

公开(公告)号：US20230030467A1

公开(公告)日：2023-02-02

申请号：US17873970

申请日：2022-07-26

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY

发明人： Shuzhao CHEN ,  Liu HAN ,  Cangyan XIAO ,  Meng YANG

IPC分类号： E21C41/26

摘要： A method for slope geological disaster treatment and mineral resource recovery includes the following steps: S1: dividing a mountain top into a plurality of treatment sections and treatment segments; S2, selecting an easy-to-slide area at the upper portion of a first treatment segment and blasting an easy-to-slide body to make the easy-to-slide body roll down to a bottom of the slope; S3, forming a regular initial slope bench; S4, mining coal at the coal seam in a grouped mining adit manner, and laying grouting pipelines in the primary mining adits; S5, forming closed mining adits; S6, excavating secondary mining adits at intervals of the primary mining adits in sequence; S7, continuing mining in an adjacent second treatment segment in the same manner; and S8, continuing mining the first treatment segment of the second treatment section in the same manner.

公开(公告)号：US20220267974A1

公开(公告)日：2022-08-25

申请号：US17619102

申请日：2020-02-29

申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY ,  XUZHOU TIANLUZHONGKUANG MINING TECHNOLOGY CO., LTD.

发明人： Shuzhao CHEN ,  Liu HAN ,  Cangyan XIAO ,  Tao SHANG

IPC分类号： E02B3/00 ,  E02D17/04

摘要： The present invention discloses a method for constructing inner dump type strip mine pit bottom reservoirs section by section, specifically including the following steps: S1: processing end slopes: discarding clay at a lowest step of an inner waste dump of a strip mine; S2: discharging concrete to slope faces of lowest steps of the end slopes on two sides of a pit bottom; S3: sealing the bottom; S4: discarding gravel into a pit of the strip mine; S5: laying geotextile; S6: re-adopting clay on the lowest steps of the end slopes of the inner waste dump, so as to form a reservoir sealing isolation layer; S7: constructing a plurality of reservoirs step by step in an advancing direction of the strip mine; S8: storing water resources: completing installation of water storage wells; S9: completing installation of water fetching wells; S10: storing water resources.