Abstract: Clay-rock cemented and pumped filling materials are stirred to mix well，with broken rock in the mine for aggregate，yellow-clay for bonding material，concrete for cementing material and a certain amount of water.Base on laboratory experiments and in-situ pumping in the underground for seven kinds of proportion，mechanical and pumping property were analysed in this paper.Study indicates that，this fills have the advantages such as high pumping mortar density，fast initial set，high strength，well pumpability，little frayed pipe.Better effect had been obtained.

Key words: Yellow-clay, Crushed waste-rock, Pumped filling material, Pumping property