Device for simulating development of fractured pipeline in karst region

Abstract

The invention discloses a device for simulating development of a fractured pipeline in a karst region. The device, which simulates the development of underground fractured pipelines in the karst region through PVC steel hoses of different pore sizes, simulates the influence of the fractured pipelines on the soil loss and material migration in the karst region under the influence of the different degrees of bending (bending coefficients) under different development levels (aperture size change), constructs monitoring micro-areas of the surface-underground binary space water and soil process inthe karst region, analyzes the influence of the development of the fractured pipelines on the loss and material migration in the karst region through indoor artificial rainfall experiment, and revealsthe spatial coupling relationship between hydrological process and material migration process in underground fractured pipelines.

Description

technical field [0001] The invention belongs to the technical fields of hydrology, ecology, soil leakage and soil and water conservation, and specifically relates to a device for simulating the development of cracked pipelines in karst areas. It provides a scientific basis for the consolidation of climate governance results and the sustainable use of land. Background technique [0002] The unique karstification in the karst area forms a surface-underground dual spatial structure. Under the synergy of natural and human factors, the karst surface presents a rocky desertification landscape with discontinuous soil cover, shallow soil layers, and even large-scale bedrock exposure. Under the ground, cracks, dissolution pipes, funnels, shafts, sinkholes, and caves are formed under the dissolution of carbonate rock (limestone). The special "dual" structure and porous medium characteristics of the karst area make the runoff flowing in the shallow pores (cracks), pipes, and funnels d...

AI Technical Summary

Problems solved by technology

[0004] At present, the devices for simulating the development of underground structures in karst areas are still based on simple generalized simulations. The development of underground fissure pipelines is also concentrated in the case of a single degree of fissure, and rarely involves the complexity of the bending of fissure pipelines. These studies mainly focus on the status, mechanism and conceptual model of groundwater and soil loss, and there is still a lack of coupled research on water and soil loss and nutrient migration from the three-dimensional perspective of the surface and underground.

Images