Simulation test device for studying slope runoff and underground hole fissure flow

Abstract

The invention discloses a simulation test device for studying slope runoff and an underground hole fissure flow. A bearing and a rotating shaft are arranged at one end of a support frame. One end of channel steel is welded to the rotating shaft. The channel steel has an upper bottom plate and coamings which are welded integrally, and a lower bottom plate movably connected with the upper bottom plate, wherein the upper and lower bottom plates are uniformly provided with fissure holes with a consistent size; one end of the lower bottom plate is connected with a speed reducer by a shaft; the speed reducer is connected with an operating rod; three coamings are provided with interflow holes; collector grooves and water outlets are reserved below the interflow holes outside the three coamings; the coaming A close to one end of the speed reducer is provided with a V-shaped collection opening, and the coaming B at the other end is provided with a hanger hole; and a hole fissure flow collectorgroove plate is arranged below the lower bottom plate. A lifting frame (3) is provided with a pulley, a steel chain and a hanger. The simulation test device, as a simulating rainfall test device, hasa sloping surface which can be adjusted between 0 to 45 degrees, and a hole fissure ratio which can be adjusted between 0 to 8 percent, and provides an effective method for studies on soil erosion mechanisms of karst regions.

Description

technical field [0001] The invention belongs to the fields of environmental science and soil science research, and relates to a test device for studying surface runoff and underground runoff, in particular to a simulation test device for studying slope surface runoff and underground hole fissure flow. Background technique [0002] The rocky desertification in the Southwest karst area has become a serious constraint factor for the economic development of the Southwest region. The area of ​​the southwest karst area is more than 500,000 square kilometers, and the area of ​​rocky desertification has also reached 94,200 square kilometers. The cracks and caves in the karst area are tortuous and criss-cross , causing rainwater to quickly seep into the ground, and the underground river has abundant water storage. The surface soil is lost together with the rain, which makes the surface bedrock bare and the soil cover discontinuous. Therefore, it is of great practical significance to ...

AI Technical Summary

Problems solved by technology

However, most of the previous devices were used to study surface runoff. For example, Chinese patent 00128153.4 discloses a "surface runoff measurement facility and its measurement method", and Chinese patent 200810102681.7 discloses an "in-situ monitoring of farmland underground leaching and surface runoff." There are few studies on underground runoff. For example, Chinese patent 200910170085.7 discloses a "lake ecological water demand analysis technology based on function setting method". free adjustment

Therefore, it is necessary to develop a test device that can adjust both the slope and the pore fissure, especially in the study of soil erosion caused by karst slope runoff and underground pore fissure flow in Southwest China. There has been no report on this aspect so far.

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