Analysis of stratification in underground space development and utilization: an example from Beisan county of Langfang city

Abstract

Abstract It is important to analyze underground urban spaces for their capacity to meet the needs of urban development without compromising important ecological resources. Through analyzing the soil structure of Beisan County of Langfang City, the cohesive soil has low bearing capacity and easy deformation, which affects the development of underground space; the sand has wide distribution, large thickness and high bearing capacity, which is beneficial to the development of underground space. In 18-22 meters and 50-70 meters underground, there are two cohesive soils with continuous distribution, which are natural protective barriers for groundwater resources. In order to coordinate the development and utilization of underground space with the protection of groundwater resources, a safe method for utilizing space is proposed that protects groundwater resources and avoids breaking continuous aquiclude by stratifying the underground space. The underground space is developed in three sections in the study area: 0∼18 meters is the shallow underground space;22∼50 meters is the sub-deep underground space; Below 70 meters is the deep underground space.