The foundation pit is the main form of development for underground spaces.In order to develop the urban underground space scientifically and reasonably,the index system of geo-environmental suitability assessment for foundation pit in the middle layer was constructed based on the existing geological data in Zhengzhou city.In the study,the multi-objective linear weighted function method was used to evaluate the suitability of geo-environment.The results show that the index system of geo-environmental suitability assessment for foundation pit in the middle layer in Zhengzhou city can be divided into five major categories with 13 factors.Among them,stability of foundation pit,groundwater depth and water enrichment of aquifer have significant impacts on the foundation pit.The suitability assessment results indicate that the suitable area is located in the west of Beijing-Guangzhou Railway,the medium-suitable area is located in the east of Beijing-Guangzhou Railway,the south of Dongfeng Canal and the west of the Beijing-Guangzhou high-speed railway,the poor-suitable area is located in the area near Longhu Lake and east of the Beijing-Guangzhou high-speed railway.The prohibited construction area is near the reservoirs,South-to-North Water Diversion Project,railways,and underground cultural relics.The results indicate that the main suitability of foundation pit in the middle layer of Zhengzhou City is moderate.The geo-environment suitability evaluation of the foundation pit engineering in Zhengzhou City has a strong pertinence and can provide technical support for the development and utilization of underground space in Zhengzhou City.And the index system can be used in the geo-environmental suitability assessment of underground spaces in cities with similar geological conditions.
关键词
地质环境适宜性/地下空间/多目标线性加权函数法/基坑工程/郑州
Key words
geo-environmental suitability/underground space/multi-objective linear weighted function method/foundation pit/Zhengzhou
维普
万方数据