Bolted nyob rau hauv-situ pawg qhia: bolted in-situ pawg yog ib hom ntawm drilling hauv-situ pawg nrog cov yam ntxwv ntawm kauv, nrog rau me ntsis / laum yeeb nkab / helical hniav thiab txuas cov yeeb nkab, laum yeeb nkab thiab lub hwj chim qhov chaw, input kev sib txuas.

