Based on analysing the principle of stratum-grouting in curing the cracked shaft lining, the paper expatiates the necessity of controlling stratum-grouting process. It also probes into the principle of con-trolling stratum-grouting process according to evolvement of shaft lining's additional strain. According to a project, the paper studies the contents and measures of controlling stratum-grouting process. The results have indicated that stratum-grouting process control was very successful, and that stratum-grouting have effectively improved the stress condition and released remnant strain of shaft lining. The shaft lining is safe during stratum-grouting. The additional strain of different levels and the grouting process must be effectively monitored and controlled.

本文建立了在含水层疏水压缩过程中端部嵌固的负摩擦力的弹性计算模型，井将其分解为三十简单的子问题分别求解，然后用应变协调条件将它们联系起来，得到一组负磨擦力的计算公式。

本文在依相似理论建立的竖井模拟试验台上，对位于特殊地层中的立井井壁受力问题进行了模拟研完，首次证实了粘土层对井壁作用有纵向附加力。并得到了该力的数值、分布及变化规律。得出附加力是导致矿井井壁鲒构破坏的重要因素的结论，指出位于特殊地层的立井井壁姑构设计应当采用三维空间理论进行计算。

For preventing and curing the rupture disaster of shaft lining effectively, according to the additiona force theory of shaft lining fracture, more than forty tests were carried out on the large scale testrig on the basis of simulating theory. The influence of the position of aquifer, the reinforcing scope of aquifer, reinforcing distance and the strength of grouting cemented mixture on the value and variation law of the axial additional force on shaft lining is studied. The relationships between the reinforcing parameters and the axial additional force on shaft lining are obtained, which provides the theoretic foundation and construction design parameters for the method of reinforcing strata by grouting to pre-vent and cure the rupture disaster of shaft lining.

基于模型试验，分析了饱和中砂融化沉降位移随时间的变化、单桩负摩阻力与融沉位移的关系。在析冰融化阶段，试样析冰表面位移与时间呈近似线性关系，而在颗粒重分布阶段的位移数值甚小；与此两阶段相对应，试样颗粒骨架表面位移可分为近似线性和非线性两部分，非线性段的贡献来自于融后颗粒重分布；单桩负摩阻力随融化过程呈良好的线性关系，但在两阶段中负摩阻力产生和增加的机理不同。在颗粒重分布阶段，颗粒骨架表面位移虽仅占其总位移的9.7%，但负摩阻力却增加了近18%。