Influence of drain hole inclination on drainage effectiveness of coal open pit mine slope

International Conference on Earth Science, Mineral, and Energy

地球科学;矿业工程;能源学

Cahyadi, T.A.^1 ; Widodo, L.E.^2 ; Fajar, R.A.^3 ; Baiquni, A.^4

Lect. of Mining Engineering of Universitas Pembangunan Nasional Veteran Yogyakarta, Indonesia Jalan SWK 104, Sleman

55283, Indonesia^1

Lect. of Mining Engineering of ITB, Indonesia Jalan Ganesha 10, Bandung, Bandung

40132, Indonesia^2

PhD Stud. Mining Engineering of ITB, Indonesia Jalan Ganesha 10, Bandung, Bandung

40132, Indonesia^3

PT Berau Coal, Berau, Indonesia Jalan Pemuda 40, Tanjung Redeb Berau

77311, Indonesia^4

关键词: Drain holes;    Ground water discharge;    Ground water table;    Groundwater conditions;    Inclination angles;    Open-pit mine slopes;    Pit mines;    Water discharges;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/212/1/012060/pdf
DOI  :  10.1088/1755-1315/212/1/012060

来源: IOP

【 摘 要 】

Drain hole has an important role to reduce groundwater table on a slope of coalopen pit mine. Groundwater condition on acoal open pit mine slope with a homogeneous groundwater flow media is highly dependent on the type of lithology and the groundwater bearing-rocks. The drain hole on acoal open pit mine slope is very influential on the water discharge and the length of the drain hole. This paper presents a discussion on the effect of drain holeinstallation with an inclination angle of 65° and 90° on the discharge and drain hole length. The results show that the drain hole with an angle of 65° results in greater groundwater discharge than the 90° angle. In addition, the drain hole with inclination angle of 65° is shorter than that of the drain holeinstalled with an inclination angle of 90°, thus reducing the operating costs of the open pit mine slope drainages.