<p>Coal mine overburden dumps (OBD) are often subjected to failure due to poor execution, environmental variations, and its inherent characteristics. Huge amounts of land and revenue are incurred in the rehabilitation of OBD, which can be avoided with suitable stabilisation in place during the construction of OBD. Geogrid reinforcing techniques can become an effective and sustainable means in the stabilisation of these OBDs. However, frictional and interface frictional characteristics of reinforced soils play a vital role in deciding the stability of geosynthetic stabilised soil structures. OB dumps are usually filled with random dumping of mine waste that are not properly characterised before filling, leading to catastrophic failures. In this study, an attempt is hence made to identify the suitable means to stabilise the weak zones of coal mine OBDs using a variety of bi-axial geogrids. For which, the essential shear characteristics of the OB material are evaluated using large direct shear tests along with the interface shear characteristics of OB material with inclusion of three different types of commercially available bi-axial-geogrids of varying capacities. The shear characterisation results were further used to evaluate the stability of mine OBDs with and without inclusion of geogrids in different combinations. Such an evaluation helps for understanding the effective and optimal reinforcement strategy for field implementation. A significant increase in shear capacity of mine OBDs is observed with the inclusion of reinforcing geogrids at the edges of mine OBD facilities. The factor of safety (FoS) of the high slopes increased from 0.383 to 1.521 with the inclusion of high tensile geogrid layers in the edges of the mine dump benches. The proposed method of stabilisation can address the environmental consequences by avoiding the global slip failure of mine OB benches. The cost analysis of the geosynthetic reinforced mine OB for optimised length has shown up to 20% reduction in the cost of reinforcement.</p>