摘要
该文选取延安市作为黄土丘陵沟壑区的典型代表,总结出侧向山体地面探测适宜采用航空摄影测量、三维基础地质调查填图等方法,垂向地下空间探测可采用工程地质钻探、随钻监测、钻孔多参数地球物理测井等技术方法,其中工程地质钻探、多参数地球物理测井对于探测黄土丘陵沟壑区地下空间效果较好。探测结果显示,延安市中心城区地下岩土体可划分为8个土体填图单元、5个岩体填图单元,其中中侏罗世延安组宝塔山段石英砂岩是地下空间开发的理想岩层。总结出延安市城区地下空间地质结构类型包括4种,其中侧向山体空间地质结构包括黄土梁峁区地质结构、斜坡带地质结构2种类型,垂向地下空间地质结构包括河谷阶地区地质结构、人类工程活动挖填方区地质结构2种类型,结果可为区内建立山体及地下三维地质结构模型提供控制性的准确数据。
This paper considers that the methods of aerial photogrammetry and three-dimensional basic geology mapping are suitable for detecting the lateral mountain space while the technique methods of engineering geological drilling,monitoring while drilling and geophysical well logging of multi-parameters can be used in detection of vertical underground in loess hilly and gully region like Yan’an,among which the detection effect of engineering geological drilling and geophysical well logging of multi-parameters is much better.The detection result shows that the rock and soil of underground in Yan’an center areas can be divided into 8 soil mass mapping units and 5 rock mass mapping units,and the quartz sandstone strata of Baotashan Member in Middle Jurassic Yan’an Formation is favorable for underground space exploitation.It concludes four types of underground geological structure in Yan’an City,i.e.the loess gully region and slope zone of lateral mountain space geological structures,and the valley terrace area and the excavation and filling area of human engineering activities in vertical underground geological structure.The research result can provide controlled and accurate data for the establishment of a three-dimensional geological structure models in the area.
作者
程秀娟
孙萍萍
王晓勇
薛强
王益民
田中英
CHENG Xiujuan;SUN Pingping;WANG Xiaoyong;XUE Qiang;WANG Yimin;TIAN Zhongying(Key Laboratory for Geo-hazards in Loess Area,Ministry of Natural Resources,Xi’an Center,China Geological Survey,Xi’an 710054,Shaanxi,China)
出处
《华东地质》
2021年第2期167-175,共9页
East China Geology
基金
中国地质调查局“延安革命老区综合地质调查(编号:DD20189270)”项目资助。
关键词
黄土丘陵
延安
地下空间
探测方法
loess hills
Yan’an
underground space
detection method
