Pullout mechanism of the bearing reinforcement embedded in claystone soil of Mae Moh mine

Abstract

Bearing reinforcement, which is composed of a longitudinal member (steel deformed bar) and transverse (bearing) members (a set of equal angle steel), has been established as an effective earth reinforcement material. The equation for estimating the pullout resistance of this reinforcement in coarse-grained soils has been previously developed but not for fine-grained soil. Claystone soil, abundant in Mae Moh mine, is a fine-grained material when crushed and compacted. It was proposed to be a backfill material in the Bearing Reinforcement Earth (BRE) wall for mining activities. The pullout resistance mechanism of the bearing reinforcement embedded in the claystone soil is presented in this pap..