设计立井井筒支护时,必须考虑井筒的维护条件,其中要以工程地质、水文地质和采矿技术等因素作为先决条件。在这种情况下,由于条件是多种多样的,必须对各种设计方案进行研究。 但是,井筒设计与建设的实际经验,还不能充分满足这些要求。差不多都在使用整块浇铸的混凝土井壁,没有充分技术根据的设计方案,使井筒的维护条件更加复杂化,这就必然导致大量繁重和昂贵的井筒维修, When designing wellbore support, the wellbore maintenance conditions must be taken into account. Factors such as engineering geology, hydrogeology and mining technology should be taken as prerequisites. In this case, due to the variety of conditions, various designs must be studied. However, the actual experience of wellbore design and construction can not fully meet these requirements. Almost all use the monolithic cast concrete shaft wall. Without adequate technical design, the maintenance conditions of the wellbore are further complicated, which inevitably leads to a large amount of heavy and expensive shaft repairs,