摘 要：研究区位于南祁连盆地，属于南祁连褶皱带，构造特征明显，其断裂、褶皱、凹陷发育，以往的地质勘探较少。由于其复杂的地质特征和高原环境，人们至今未对其进行详细勘察。本文通过对研究区所获取的岩心进行采样，分析了泥岩、砂岩等47件标本的电参数，29件标本的密度参数，53件标本的放射性参数及磁化率参数，32件标本的纵波波速等物性特征。其间通过分析岩石的物性特征差异，归纳总结了岩矿石的电性、密度、放射性、磁化率及纵波波速等物性特征。

关键词：南祁连;盆地;岩石;物性分析

中图分类号：P618.13;TE312 文献标识码：A 文章编号：1003-5168（2020）17-0146-04

Analysis of Rock Physical Properties in South Qilian Basin

ZHANG Baoqiang1，2，3，4

（1. Shaanxi Provincial Land Engineering Construction Group Co.， Ltd.，Xi'an Shaanxi 710075;2. Institute of Land Engineering and Technology， Shaanxi Provincial Land Engineering Construction Group Co.， Ltd.，Xi'an Shaanxi 710075;3. Key Laboratory of Degraded and Unused Land Consolidation Engineering， the Ministry of  Natrual Resource，Xi'an Shaanxi 710075;4. Shaanxi Provincial Land Consolidation Engineering Technology Research Center，Xi'an Shaanxi 710075）

Abstract： The study area is located in the South Qilian Basin and belongs to the South Qilian Fold Belt， the structural features are obvious， and its fractures， folds and depressions are developed， and there have been few geological explorations in the past. Due to its complex geological features and plateau environment， people have not carried out detailed surveys to date. In this paper， by sampling the cores obtained in the study area， The physical parameters of 47 specimens such as mudstone and sandstone， density parameters of 29 specimens， radioactivity and magnetic susceptibility parameters of 53 specimens， and longitudinal wave velocity of 32 specimens were analyzed. During the analysis of the differences in physical properties of rocks， the electrical properties， density， radioactivity， magnetic susceptibility and longitudinal wave velocity of rock ores were summarized.

Keywords： South Qilian;basin;rock;physical property analysis

研究区位于青藏高原东北缘南祁连盆地的哈拉湖，研究區常年冻土发育，构造复杂，是祁连山西部的一个山间凹陷盆地，属于高山内陆湖泊，其湖泊与河流水系发育复杂[1]。研究区属于高海拔区域，气候恶劣，具有高原亚寒带草原半干旱气候。由于冰川和积雪的存在，整个冻土区的寒冻风化作用十分明显[2-3]。研究区位于青藏高原的东北部，受地壳影响明显，周边的地形起伏较大。研究区内的河流较多，主要分为内流和外流两大水系，区内总计发育14条河流，其多发源于山区，其中4条为常年流水，最终注入哈拉湖内，哈拉湖内所形成的沉积物主要就是由源河流所携带的大量碎屑物质堆积而来[4]。采样区位于哈拉湖的西侧，属于南祁连盆地区域。哈拉湖以往的研究程度较低，基本为开展过相关的地质地貌调查，因此在该地区开展岩石物性特征的分析很有研究意义。……