重庆地区不同地质年代泥岩膨胀特性试验研究

为了研究泥岩的膨胀特性,采用膨胀仪测试了多组重庆地区不同地质年代泥岩的自由膨胀率、膨胀力和膨胀应变。研究结果表明,泥岩的膨胀率主要受其地质年代、矿物组成、以及含水率的影响。另外,红色泥岩在不同层理方向具有不同的膨胀性能,垂直于层理面方向的膨胀率大于平行于层理面方向的膨胀率。在体积保持不变的情况下,不同年代泥岩的膨胀压力和膨胀应变呈线性关系。研究成果对于重庆地区工程建设中不同地质年代泥岩的膨胀性具有一定的参考价值。

Experimental study on expansion properties of mudstone in different geological ages in Chongqing

The application of 3S technology in different stages, including the stage of investigation and the stage of environmental impact and prediction, is summarized in this paper. As an example, 3S technology is brought to the environmental impact assessment of a rare earth mineral in Guangxi Province. During the process of investigation, the global positioning system (GPS) is used to gain ground points, which is an important process in geometry rectification of remote sensing imagery. At the same time, it will benefit to investigate the current environment situation and questions in the mine area. During the stage of prediction, based on remote sensing imagery, visual interpretation and supervised classification are used to obtain the map of the classification results, including the current land-use map and the vegetation type map. Finally, evaluation precision is verified through field work.