Patent AU-2019250171-A1 (AU)
Title: Mine exploitation method based on stoping, separation and filling control
Inventor: ZHANG QIANG
IPC: E21C41/16
Filed: 2019-04-01
Abstract: TEXT OF THE The present invention discloses a mine exploitation method based on stoping, separation and filling control. The design process comprises: 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. The design method is highly integrated with underground coal and gangue separation, gangue filling and coal stoping processes, design is performed aimed at different control requirements of controlled objects under different engineering backgrounds, the design method can be used for guiding the design of underground mining based on "stoping, separation and filling control" of a mine, the zero discharge of coal gangue on the ground can be realized, ground subsidence, rock burst and aquifer stability can be controlled, and therefore the design method has a good popularization prospect. FIGURE ACCOMPANYING THE Controlled Dsign Design object steps content Determine the generation position of Deploy a gangue-less coal and gangue underground gangue and production, mining system optimize the stoping process, and reduce rock roadway excavation Choose a suitable coal and gangue Choseatithdcorndingo separation method according to separation Chooseasuitalcoalandganguecapability, precision requirement, a coal separation method according to ganguegrain size range, size limitation of Ground | separation requirement a separation chamber, the complexity of subsidence separation processes and equipment cost Choose a suitable filling method A8 aconding to the geological conditions of Choose a suitable filling method according the coal scam, mine production capability to mine geology, production conditions and requirement, rock stratum control c rock stratum control requirement I requirement, supply quantity offilling IRock burst Isplqanioflig I materials and an economic budget Reversely calculate filling rate control I Rlrequirements according to gangue I Reversel calculate a filling rate according dischargerequirement and theoretical | to gangue discharge requirement and calculation, numerical simulation and Aqife control indexes by utilizing theoretical physical sinmulation of equivalent mining calculation, simulation and experiment height, development height of a water flowing fractured zone and immediate roof deflection Determine a filling process and a separation Thenumberoftiesoftamping,the process according to the filling rate tamping angle, the tamping force, the discharge height and the repose angle of a filling body Feed back and adjust the filling process and FMonitor the mass ratio of filling, dynamic separation process parameters by monitoring roof subsidence, ground subsidence, rock filling and control effect indexes burst tendency and water flowing fractured Izone height, and adjust the filling process