DOI: 10.11799/ce201703020
Study on floor heave law of gob-side entry retaining in Zhongxing Mine
SHAN Ren-liang
ZHENG Yun
HUANG Bo
BAI Yao
LI Zhong-li
SUI Shun-meng
Abstract：Deformation monitoring is carried out on gob-side entry retaining of Zhongxing Mine.Floor heave laws for the first and secondary mining are studied by analyzing working resistance's changes of hydraulic supports and deformation of roadway.The results show that: according to the floor heave of monitoring data,variation of the floor heave is divided into four stages: excavation and the stability,first mining front support influence stage,first mining post influence stage and secondary mining front support influence stage.Among them,the first mining post influence period and secondary mining front support influence period produce over 90% of the floor heave.The secondary mining effect of floor heave is far greater than the first mining period.Suggestion is that full consideration shall be given to not only the effect of the first mining,but also to the secondary mining influence on surrounding rock along the retained roadway.
Keywords：gob-side entry retainingdeformation monitoringfloor heavesecondary mining
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 67-70 )