中文摘要：

为解决人工冻结技术在西部井筒穿越白垩系富水地层的技术难题，以甘肃新庄矿风立井冻结工程为背景，通过室内物理力学试验、现场实测及有限元数值模拟，对冻结状态下白垩系地层岩石的热物性及力学特性进行研究，探讨凿井期冻结壁的受力机制，重点分析白垩系冻结壁的冻结压力变化规律和成因，对比测温孔与冻结壁径向温度的实测与模拟结果，拟合得出冻结壁受混凝土水化热的影响范围为440～480 mm。研究结果为丰富我国岩石力学的基础理论研究起到积极作用，也可对西部冻结法凿井的优化设计和安全稳定性研究提供依据。

英文摘要：

The physico-mechanical characteristics of cretaceous rocks in frozen conditions were studied with the laboratory testing,the field measurement and the finite element simulation. The frozen mechanism of the shaft wall during the period of shaft excavation was discussed;and the variation and causes of freezing pressure in the frozen wall in the cretaceous layer were analyzed in detail. The measured temperatures on the frozen wall and in the thermometer holes were compared with the simulated results yielding the influence range of heating of the concrete hydration on the frozen wall to be 440-480 mm.