含冰模拟月壤切削负载试验研究

Experimental Study on Cutting Load of Simulated Lunar Soil Containing Ice

“探月工程四期”计划前往月球南极永久阴影区开展月壤水冰钻探任务,获取深低温环境下月壤水冰的机–壤力学作用特性对采探机具的研制具有重要的意义。面向月壤水冰这一新研究对象,制备了与极区月壤水冰具有矿物组分、粒径级配相似性的切削试验用模拟月壤,首创并研制了液氮浴切削力载测试平台,建立了深低温月壤水冰模拟物的切削试验条件,在此基础上开展了月壤水冰模拟物的切削力载测试试验,并初步获得了不同切深、不同样本温度、不同样本含水率工况下的切削负载数据,可为钻进采样机具的研制提供参考依据。

The fourth phase of the lunar exploration project is planning to carry out lunar soil water ice drilling mission in the permanently shadowed area of the south pole of the Moon.It is of great significance to obtain the mechanical-soil mechanical properties of soil water ice in the deep low temperature environment for the development of mining and exploration tools.Facing the new research object of lunar soil water ice,simulated lunar soil with similar mineral composition and particle size to polar lunar soil water ice was prepared in this paper for cutting test.The liquid nitrogen bath cutting load test platform was first developed and the cutting test conditions of deep-low temperature lunar soil water ice simulators were established.On this basis,the cutting load tests of lunar soil water ice simulators were carried out.The cutting load data under different cutting depth,different sample temperatures and different sample water content were obtained,which can provide reference for the development of drilling sampling machine.