含水率和颗粒级配对TJ-1模拟月壤力学性能影响的试验研究

发布时间：2018-02-26 05:13

本文关键词： 月球探测期工程 TJ-模拟月壤含水率颗粒级配力学性能　出处：《岩土力学》2011年07期 　论文类型：期刊论文

【摘要】：月球探测2期工程中,需在地球上进行探测器软着陆过程及月面巡视探测的模拟试验,上述试验中月壤特性的模拟至关重要。通过试验研制出了适用于上述试验的Tongji-1(简称TJ-1)模拟月壤。但2期工程中可能需用到近千吨的模拟月壤,由于客观条件限制,难以满足含水率为0%、颗粒级配与目标级配完全吻合的技术要求。为此,开展了含水率及颗粒级配对TJ-1模拟月壤力学性能影响的试验研究。根据TJ-1模拟月壤在不同含水率时的力学试验结果,建立了强度参数与含水率的关系式,建议含水率上限值为3%,并通过TJ-1模拟月壤不同颗粒级配曲线下的力学性能测试,得到了级配变化的许可范围。
[Abstract]:In the second phase of lunar exploration project, it is necessary to carry out the simulation test of the soft landing process of the probe and the lunar surface patrol exploration on the earth. It is very important to simulate the characteristics of lunar soil in the above experiment. Tongji-1 (TJ-1), which is suitable for the above experiment, has been developed through the experiment. However, it may be necessary to use nearly 1,000 tons of simulated lunar soil in the second phase of the project, because of the limitation of objective conditions. It is difficult to meet the technical requirement that the moisture content is 0 and the particle gradation is completely consistent with the target gradation. The effect of water content and particle gradation on the mechanical properties of lunar soil simulated by TJ-1 was studied. Based on the results of TJ-1 simulation of lunar soil with different moisture content, the relationship between strength parameters and moisture content was established. It is suggested that the upper limit of moisture content should be 3 and the allowable range of gradation variation can be obtained by simulating the mechanical properties of lunar soil under different particle gradation curves by TJ-1.
【作者单位】：同济大学岩土及地下工程教育部重点实验室;同济大学地下建筑与工程系;
【基金】：国家自然科学基金项目(No.10972158);国家自然科学基金杰出青年基金项目(No.51025932) 博士点基金项目(No.20100072110048)
【分类号】：P184.5

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