恒温恒湿实验室铺设相似模型适宜温湿度值设定方法

发布时间：2018-07-11 16:03

本文选题：相似材料 + 含水率　；参考：《金属矿山》2017年01期

【摘要】：相似材料模拟是矿业领域研究岩层移动重要的手段。考虑到温度及湿度会影响原型与模型的相似度,故为了降低温湿度对相似材料模拟结果的影响,提高模型结果的可靠性,建议在恒温恒湿实验室铺设。但是如何设置合适的温湿度值是一个亟待解决的问题。首先根据相似材料试件试验揭示了相似材料的强度时变特征,在此基础上,设计出4种温湿度试验环境方案,基于恒温恒湿实验室进一步探索了温湿度对试件含水率的影响。研究表明:温度和湿度会影响相似材料含水率,进而影响相似材料强度的变化率,可通过设置合适的温湿度值来减缓相似材料模型的强度变化,从而提高模型与原型的相似。在上述研究成果的基础上,提出了恒温恒湿实验室铺设相似材料模型适宜温湿度值设置流程。研究成果对于促进恒温恒湿实验室建设、提高相似材料模拟结果具有理论与实践意义。
[Abstract]:Simulation of similar materials is an important method to study strata movement in mining field. Considering that temperature and humidity will affect the similarity between the prototype and the model, in order to reduce the influence of temperature and humidity on the simulation results of similar materials and improve the reliability of the model results, it is suggested that the model be laid in the constant temperature and humidity laboratory. However, how to set the appropriate temperature and humidity value is an urgent problem to be solved. Firstly, the time-varying characteristics of the strength of the similar material are revealed according to the specimen test of the similar material. On this basis, four kinds of environmental schemes of temperature and humidity test are designed, and the influence of temperature and humidity on the moisture content of the specimen is further explored based on the constant temperature and humidity laboratory. The results show that the temperature and humidity will affect the moisture content of the similar material, and then affect the change rate of the strength of the similar material. The change of the strength of the similar material model can be slowed down by setting the appropriate temperature and humidity value, so as to improve the similarity between the model and the prototype. On the basis of the above research results, the flow chart of setting the temperature and humidity value of the similar material model laid in the constant temperature and humidity laboratory is put forward. The research results have theoretical and practical significance for promoting the construction of constant temperature and humidity laboratory and improving the simulation results of similar materials.
【作者单位】：国土环境与灾害监测国家测绘地理信息局重点实验室;中国矿业大学环境与测绘学院;
【基金】：国家自然科学基金项目(编号:51674249) 江苏省高校优势学科建设工程项目(编号:SZBF2011-6-B35)
【分类号】：TD325

【相似文献】