Research on the mechanism and applicability of deep coordination full mining deformation reduction
YI Sihai
GAO Pengcheng
LI Xinliang
XUE Yakun
XING Bin
Abstract：In this paper,taking the deep coordinated mining working face of Linxi Mine as an example,the nu-merical simulation method is used to analyze the failure characteristics of overlying strata and the evolution law of surface movement and deformation in the process of coordinated full mining.By comparing the sequential mining under the same geological conditions,the deformation reduction mechanism of coordinated full mining technology and its deep applicability are revealed.The research results indicate that the coordinated full mining technology can control the stage failure and settlement of overlying strata through the degree of mining movement of the working face and the isolation effect of strip coal pillars;The rate of surface movement and de-formation in the jump mining stage of the coordinated full mining technology is obviously smaller than that of the sequential mining,,but the rate of surface movement and deformation increases rapidly during the coal pil-lar recovery stage;Under deep conditions,it is also difficult to achieve full mining in multi face mining.In this case,the surface movement and deformation distribution of coordinated full mining and sequential mining schemes are basically the same.The surface deformation reduction effect of coordinated full mining technology under deep conditions is poor.
Keywords：coordinated full procurementnumerical simulationcharacteristics of overburden failuresurface rock movement law
Publication Date：2025-04-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 9-18 )