CAJ | 학술논문

立井井筒的非采动变形破坏是出现在华东厚表土层矿区的一种特殊矿山地质灾害，底部含水层失水压缩变形产生的附加应力是造成这一地质灾害的主要原因。在总结井筒发生非采动变形破坏的地质条件和破坏特征基础之上，通过建立三维数值模拟模型，分析了不同影响因素作用下井筒外壁所受附加应力的大小和变化规律，并根据模拟结果，利用弹性力学厚壁圆筒解建立井筒变形破坏应力状态与底部含水层水头降之间的对应关系，得到井筒变形破坏极限状态下对应的底部含水层水头降为89.5 m。
립정정통적비채동변형파배시출현재화동후표토층광구적일충특수광산지질재해，저부함수층실수압축변형산생적부가응력시조성저일지질재해적주요원인。재총결정통발생비채동변형파배적지질조건화파배특정기출지상，통과건립삼유수치모의모형，분석료불동영향인소작용하정통외벽소수부가응력적대소화변화규률，병근거모의결과，이용탄성역학후벽원통해건립정통변형파배응력상태여저부함수층수두강지간적대응관계，득도정통변형파배겁한상태하대응적저부함수층수두강위89.5 m。
Non-mining disturbance-induced deformation and failure in shaft is a special mine geological hazard in mining areas with thick alluvium layer in East China. Additional stress induced by water loss and compression de-formation in bottom aquifer is the major cause for the geological hazard. On the basis of summarizing the geologi-cal conditions and characteristics of deformation and failure induced by non-mining disturbance in shaft, the paper analyzes the amplitude and variation regularities of the additional stress in outer wall of shaft under action of dif-ferent influencing factors through 3-D numerical modeling. On the basis of the modeling results and using elastic mechanics to solve the shaft with thick wall, the relationship between stress condition of deformation and failure and water head drop in bottom aquifer was established, it was indicated that the corresponding water head drop under limit state of deformation and failure in shaft was 89.5 m.