基于地质雷达法探测冻结帷幕研究

人工冻结法的冻结帷幕直接关系到地下施工的环境安全,现阶段对于冻结帷幕形成与否的判定仅仅通过有限的测温孔和压力孔数据,常造成判定不准、开挖后透水无法施工、需二次冻结的情况发生.为了高效准确地探测冻结帷幕的性态,本文通过地质雷达法进行冻结帷幕的探测试验.在实际物理探测前,采用数值模拟进行可行性分析,数值模拟结果表明,地质雷...

Detection of Freezing Curtain Based on Geological Radar Method

The freezing curtain of the artificial freezing method is directly related to the environmental safety of underground construction. At this stage, the determination of whether the freezing curtain is formed or not is only through the limited temperature measurement hole and pressure hole data, which often results in inaccurate determination and impervious construction after excavation. A situation that requires a second freeze occurs. In order to efficiently and accurately detect the behavior of the frozen curtain, this paper uses the ground penetrating radar method to carry out the detection test of the frozen curtain. Before the actual physical detection, numerical simulation is used for feasibility analysis. The results of the numerical simulation show that the ground penetrating radar method is effective. Based on this, the author conducted actual detection of a connection channel constructed by freezing method in a subway in Inner Mongolia, showing that it is basically feasible to use ground penetrating radar method to detect freezing curtains. Qualitative analysis of freezing curtains can be carried out, but quantitative analysis should be done. Still need to continue in-depth research.