Browsing ERE - 2009 by Author "Dharmaratne, PGR"

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  • Design and fabrication of cable bolt for excavation in a fractured rock 
    Dhanawardana, YLC; Siriwardana, HDPM; Henderson, SH; Kumara, HMCP; Indika, KAS; Dharmaratne, PGR; Welideniya, HS; Rohitha, LPS [Conference-Full-text]
    In fractured rock masses, large excavations have an unsupported stand-up times less than the minimum time required to support the roof after the excavation. Therefore, the principal objective in the design of a support ...
  • Effects of joint orientation in tunneling 
    Selvasekaran, R; Appuhami, KAIS; Kumarasiri, SAJ; Fernandopulle, SN; Lakmal, HMAG; Dharmaratne, PGR [Conference-Full-text]
    This research is focused on the effects of joint orientation with respect to the direction of tunnel axis. It is expected that the stability of surrounding rock is affected by the strike and dip of the joints and the ...
  • Ventilation of underground workings and improvement of comfort levels 
    Hewage, SC; Rajapakse, RAAC; Rathnayake, RMD; Prasanna, EAP; Dissanayake, DMAK; Dharmaratne, PGR; Welideniya, HS; Rohitha, LPS [Conference-Full-text]
    Ventilation of underground mines is required to dilute and hazardous gases, control heat and provide oxygen for workers and machinery. Kahatagaha- Kolongaha mines, Dodamgaslanda was selected for the present study as ...