DOI: 10.11799/ce202312019
Rock burst control of gob-side working face under incremental load
WANG Chao
KONG Linghai
WANG Guangmin
ZHANG Yong
HAN Ningning
SUN Qipeng
Abstract：The occurrence of rockburst in deep gob-side working faces in multiple mining areas has led to the shutdown of coal mines,making it difficult to control them.The actual effect of coal pillar retention has become an important issue affecting the safe and efficient production of these mines.Taking the deep mining in Ordos area as the background,based on the analysis of the occurrence characteristics of rockburst such as the formation structure of extremely thick bedrock,large coal pillars in the working face,and failure along the goaf roadway,the occurrence regularity of rockburst under the lateral overburden structure and load characteristics along the goaf is studied.According to the actual conditions,the distribution characteristics of lateral abutment pressure are calculated and analyzed,and the distribution of lateral abutment pressure and sharply-rising loading failure characteristics of the working face are studied using numerical simulation.It is concluded that the retention of small coal pillars is the optimal plan to reduce the rockburst risk of the working face along the goaf under extremely thick bedrock strata.The practice shows that,the small coal pillar working face in Shilawusu Coal Mine has been mined safely,and the results can provide a reference for the gob-side mining of working faces under similar conditions.
Keywords：incremental load of stratadeep working faceoverstrata load migrationdistrict coal pillarrock burst control
Publication Date：2023-12-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 108-113 )