Analysis on roadside control technology of gob-side entry retaining and applicable conditions

in order to study the roadside conroltechnology of the gob-side entry retaining and the applicable conditons in China, an analysis was conducted on thetypical ases of 150 gobside entry retaning. The resut showed that the present appied roadside control technology could be dided to a high water materal backill oncrete bac .l. aste bac..imp material backl.cal refuse backlfaling waste rock natural ackill. of cuting backll nd other types and among them,.the igh water mateial backill and concrete backil had the highest utilization rate.The appication scope of each gateway roadside contrl technodogy woud have big diferencein thee coal contions of the sean depth intlination and thickn-ess and woult have less diference n the inmediate rof lithology and thickress Aiso the practices found that the high water mateial bacil.concrete backill and paste backilcould be applied under the deep mine and thick seam conitions and the fa赳ing rock waste atural backfill could be applied under the high inclination and steep inclination conditions.