月岩采样及其物理力学特性调研分析

Lunar Rock Sampling and the Investigation & Analysis on the Physical and Mechanical Properties

摘要:

月岩的存在形式和主要物理力学特性直接关系到月岩的可钻性，是取心钻具设计、钻进工艺确定及可靠取心的基本前提和重要依据。通过大量调研分析,认为:国外历次取心管样品中发现月岩以直径较大的岩石颗粒存在，比例为40%～80%，月岩在月球样品中的比重高达65%；月岩粒径分布广,且随着深度的增加粒径大小呈先减小后增大的趋势。月海玄武岩呈疏松状态，其主要物理力学范围为密度3.26～3.51 g/cm3，堆密度3.04～3.34 g/cm3，孔隙度0～10%，抗压强度约200 MPa，动态抗拉强度114～160 MPa。

Abstract:

Existing form and main physical and mechanical properties of lunar rocks are directly related to the drillability, which are the basic premise and important basis for coring drill designing. Through a lot of investigation and analysis, it is found in samples in coring tubes that 40%～80% lunar rocks are in the form of large diameter particle and the proportion of lunar rocks in lunar samplers is up to 65%. The lunar rocks have wide particle size distribution with the tendency of particle size first decreasing and then increasing along with the depth increasing. Mare basalts is loose, the main physical and mechanical properties are density 3.26～3.51g/cm3, bulk density 3.04～3.34g/cm3, porosity 0～10%, compressive strength about 200MPa and dynamic tensile strength 114～160MPa.