立井井筒工程是影响建井工期和提高建井经济效益的关键工程。近几年来,对井筒施工的影响因素以及加快井筒施工的技术措施进行了广泛地分析研究,但要实施这些技术措施,就必须以准确的地质资料为依据,因此,井筒检查孔的施工和布置也就成为了关键问题。 Shaft shaft engineering is a key project affecting the construction period and improving the economic benefits of well construction. In recent years, the influencing factors on the wellbore construction and the technical measures to speed up the wellbore construction have been extensively studied. However, to implement these technical measures, accurate geological data must be taken as the basis. Therefore, the construction and layout of the wellbore inspection hole It has become a key issue.