A Framework for Open-Pit Mine Production Scheduling under Semi-Mobile In-Pit Crushing and Conveying Systems with the High-Angle Conveyor

Abstract

In-pit crushing and conveying (IPCC) systems have drawn attention to the modern mining industry due to the numerous benefits than conventional truck-and-shovel systems. However, the implementation of the IPCC system can reduce mining flexibility and introduce additional mining sequence requirements. This paper investigates the long-term production scheduling and the crusher relocation plan of open-pit mines using a semi-mobile IPCC system and high-angle conveyor. A series of candidate high-angle conveyor locations is generated around the pit limit, with a crusher located along each conveyor line. Each conveyor location is solved independently by an integer linear programming model for making production scheduling and crushing station decisions, aiming to maximize the net present value (NPV) considering the material handling and crushing station relocation costs. The production schedule with the highest NPV and the associated conveyor and crusher location is considered the optimum or near-optimum solution.

Review of recent developments in short-term mine planning and IPCC with a research agenda

“…A framework for simultaneous optimisation of long-term mine scheduling with SMIPCC was developed by Liu and Pourrahimian (2021). The authors proposed an integer linear programming model that maximises NPV by maximising block values and minimising haulage and crusher relocation cost.…”

“…The comparisons among the most recent short-term planning and IPCC literature show that while very few models can generate a strategic plan with IPCC in place, such as Paricheh and Osanloo (2019a), Samavati et al (2020), Shamsi et al (2022), Liu and Pourrahimian (2021), etc., there is hardly any short-term planning model with IPCC integration. To make things worse, no study can help mine planners estimate the cost of IPCC systems in a systematic manner considering all the variables and uncertainties associated with it.…”

Aplikasi Spreadsheet pada Penjadwalan Penambangan : Studi Kasus Penjadwalan Tambang Batugamping

“…Opsi lain yang dapat digunakan adalah menerapkan bahasa pemrograman. Cara ini umumnya digunakan pada tahap pengembangan dan diterapkan pada studi kasus yang spesifik (Buelga Díaz et al, 2021;Choi et al, 2022;Liu & Pourrahimian, 2021;Nancel-Penard et al, 2022;Nancel-penard & Morales, 2021;Sattarvand, 2009;Tian et al, 2021;Tolouei et al, 2021;Vu et al, 2021). Walaupun cara ini cenderung fleksibel, namun keterampilan penggunaan bahasa pemrograman merupakan persyaratan yang kebanyakan tidak dimiliki semua orang khususnya pada bidang pertambangan.…”