在竖井开采条件下,传统的方法是给竖井留设竖井和工业广场煤柱。先采柱外煤,在矿井的后期,再采柱内煤,或柱内外配采。九龙岗矿属于后者。由于井筒煤柱是按移动角留设的,加上井筒穿过的岩层中的软弱面,特别是断层面的作用;再加上柱内回采的影响,因此在井柱回采过程中,无法消除对井筒的破坏性影响;为了保证井筒的正常使用,对井筒及其装备的观测和加固维修就显得特别重要,它是保证井柱安全开采的 In the case of shaft mining, the traditional method is to leave shafts and industrial square pillars in the shaft. The first column of coal outside the column, in the late mines, and then column within the coal, or column with the mining. Jiulonggang Mine belongs to the latter. As the wellbore pillars are set aside according to the moving angle, the weak surface in the formation penetrated by the wellbore, in particular, the fault plane; together with the effect of the reclamation inside the column, it can not be eliminated during the recovery process Destructive effect on the wellbore; in order to ensure the normal use of the wellbore, it is particularly important to observe and reinforce the wellbore and its equipment. It is to ensure the safe production of the wellbore