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我国高放废物处置库新疆预选区的阿奇山地段是有利候选地段之一。本次在阿奇山地段进行详细的地质节理调查,以地表露头及采石坑内的节理为主要对象,通过现场节理调查取得节理数据,共测得3680条节理数据。进行节理几何特征的概率分析,对岩体赋存的结构条件进行有效、准确的描述和定量分析,准确地确定岩体节理的分布。由结果可以看出阿奇山地段的岩体节理以陡倾角的剪节理为主,且节理倾向和倾角符合正态分布规律,节理间距用负指数分布规律很好表示,阿奇山地段各区域的节理间距属于宽间距,由此表明此地段岩体完整性较好。本次研究得到阿奇山地段岩体节理基本特征参数,为高放废物深地质处置库的选址、概念库设计以及进行核素迁移规律研究提供翔实的资料。
One of the favorable candidate lots is the Aqishan section of Xinjiang’s pre-selected high-level radioactive waste repository. The detailed geotechnical joint survey was conducted in the section of Arch Hill, with surface outcrops and joints in the quarry as the main object. Joint data were obtained through on-the-spot joint investigation, and a total of 3680 joint data were obtained. Probability analysis of the geometric features of the joints is carried out to describe and quantitatively analyze the structural conditions of the rock mass effectively and accurately and to accurately determine the distribution of the joints of the rock mass. From the results, it can be seen that the joints of rock mass in the mountain area of Ajqi are dominated by shear joints with steep dip, and the inclination and inclination of joints are in accordance with the normal distribution law. The joint spacing is well represented by the negative exponential distribution, The joint spacing is wide, which shows that the rock mass integrity of this section is better. This study obtains the basic characteristics of rock mass joints in the Aqishan section, providing detailed information for site selection, concept bank design and the study of the migration rules of the HLW deep-lying waste.