一种新型室内抽水沉降模拟实验系统

A new indoor simulating system for ground settlement due to pumping

结合南京地铁实际工况,研制了一种新型的抽水沉降模拟实验系统,实现了室内模拟现场抽水沉降。并用该系统做了3个不同压力下的27组试样实验,对实验结果进行总结分析;同时与现场实测数据进行比较。实践证明,该系统为现场测量抽水沉降提供了较为科学的依据,对抽水引发地面沉降的预测有一定的实际参考价值。

Based on the actual construction condition of Nanjing Subway, a new simulating system for ground settlement due to pumping is developed, and then the indoor simulation of the in situ settlement due to pumping is realized ; with which the three different pressures of the 27 sets of samples are made. The testing results are analyzed and summarized, while the testing data are compared with those from the in situ measurement. The practice shows that the system provides an advanced technique for the in situ measurement of the ground settlement due to pumping with scientific data; by which the modernization level of the measurement on the ground settlement is largely enhanced as well. Practice has proved that the system for on-site measurement of pumping settlement provides a more scientific basis of the pumping and has some practical value for land subsidence prediction.