Roof bolter, inozivikanwawo seanchor drilling rig mune dzimwe nzvimbo, chishandiso chekuchera mubasa rekutsigira bhoti yemugodhi wemarasha roadway. Iine mabhenefiti akatanhamara mukuvandudza mashandiro ekutsigira, kuderedza mutengo wekutsigira, kukurumidza kuvakwa kwemigwagwa, kuderedza kuwedzera kwekuwedzera kwekufambisa, kuderedza kuwanda kwevashandi uye kuvandudza chiyero chekushandiswa kwechikamu chenzira. Bolt drill ndiyo yakakosha midziyo yekutsigira bhoti. Inobata kunaka kwerutsigiro rwebhoti, senge kutaridzika, kudzika, kurongeka kwegomba dhayamita uye kuisirwa kunaka kwebhoti, uye zvakare inosanganisira kuchengetedzwa kwega kwevashandisi, kusimba kwevashandi uye mamiriro ekushanda.
