公开(公告)号：US11143025B2

公开(公告)日：2021-10-12

申请号：US16608920

申请日：2019-04-01

Applicant: China University of Mining and Technology ,  Xuzhou Zhongkuang Backfilling & Mining Technology Co., Ltd.

Inventor： Jixiong Zhang ,  Qiang Zhang ,  Zhongyu Wu ,  Feng Ju ,  Jiaqi Wang ,  Yang Chen

IPC: E21F15/00 ,  E21C41/18 ,  E21C39/00 ,  E21F15/06

Abstract: A mine exploitation method based on stoping, separation and filling control is disclosed herein. The method includes deploying a gangue-less coal mining system; choosing a suitable coal and gangue separation method according to a separation requirement; choosing a suitable filling method according to mine geology, production conditions and rock stratum control requirement; reversely calculating a filling rate according to gangue discharge requirement and control indexes by utilizing theoretical calculation, simulation and experiment; determining a filling process and a separation process according to the filling rate; and feeding back and adjusting the filling process and separation process parameters by monitoring filling and control effect indexes.

公开(公告)号：US10352167B2

公开(公告)日：2019-07-16

申请号：US16084971

申请日：2016-12-01

Applicant: China University of Mining and Technology

Inventor： Jixiong Zhang ,  Nan Zhou ,  Wenyue Qi ,  Qiang Zhang ,  Meng Li

IPC: F16M11/00 ,  E21D15/60 ,  E21D15/20

Abstract: The present invention discloses a process method for withdrawing and recovering a mechanical constant-resistance single prop, specific steps involving: detecting a working resistance and a degree of deformation of a mechanical constant-resistance single prop, releasing lug clamp bolts of a recoverable base, knocking a lower portion of a cylinder body of the mechanical constant-resistance single prop to disengage the mechanical constant-resistance single prop from the recoverable base, and dismantling the mechanical constant-resistance single prop. Parts are classified and recovered based on degree of deformation thereof. By means of the foregoing method, a process of withdrawing and recovering a mechanical constant-resistance single prop is standardized, simple and fast disengagement of the mechanical constant-resistance single prop is achieved, and parts that can still be used can be sufficiently recovered and reused, thereby achieving the objectives of saving energy and reducing costs.