Gully strengthening and tableland protecting engineer measure simulating device
A technology of engineering measures and simulation devices, applied in the field of geological disaster prevention and control, can solve the problems of lack of in-situ physical simulation method, difficult quantitative evaluation and analysis of engineering, etc. Effect
Pending Publication Date: 2018-06-12
CHANGAN UNIV
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Problems solved by technology
[0003] At present, the commonly used engineering measures for strengthening ditches and protecting plains mainly include ditch head backfilling, check dams, changing slopes to ladders, and building reservoirs. Mature in-situ physical simulation method, so it is difficult to quantitatively evaluate and analyze the actual effect of the project
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0024] The basic principle of erosion: In the natural state, the self-weight M of the slope produces two components, namely, the normal stress σ vertical to the slope and the component F along the direction of the slope F=Msinθ (where θ is the slope angle at the bottom of the channel ). and the drag force τ of the surface runoff on the surface soil c =γhj.
[0025] Soil shear strength (where C is the cohesion of the soil, is the internal friction angle of the soil).
[0026] When F+τ c >τ 0 , the shear strength of the soil cannot resist the sliding force, and the slope collapses and slides;
[0027] When F+τ c =τ 0 , the soil is in a critical state;
[0028] When F+τ c 0 When , the sliding force component is not enough to cause sliding, and the slope is stable.
[0029] Due to the low water permeability of the loess, the surface soil of the slop...
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The invention discloses a gully strengthening and tableland protecting engineer measure simulating device which comprises a slope plate, wherein the slope plate is used for accommodating a loess erosion gully model, and the slope plate is arranged on a foldable support; the foldable support is composed of a slope plate installation support, a base support and an adjusting screw rod; the slope plate installation support is hinged to one end of the base support, the adjusting screw rod is arranged between the slope plate installation support and the other end of the base support, and the slope plate installation support can move up and down along the adjusting screw rod through a threaded connector; an artificial rain device is arranged above the loess erosion gully model, and a silt collecting box is distributed at the bottom end of the slope plate; a sensor and a data line are arranged on the board surface of the slope board, and the data line is used for sending data detected by the sensor to an external sensor data collector. According to the gully strengthening and tableland protecting engineer measure simulating device disclosed by the invention, comparison between gully strengthening and tableland protecting engineer measures and engineering-free measures is performed in site, so that quantitative analysis of engineer actual effects is achieved.
Description
technical field [0001] The invention belongs to the field of prevention and control of geological disasters, and in particular relates to a simulation device for engineering measures for solidifying ditches and protecting plains. Background technique [0002] Traditional physical simulation devices involving rainfall-induced geological disasters, such as debris flow physical simulation devices, generally use metal structural supports, which are relatively heavy and inconvenient to move, and simulation tests can only be carried out in indoor test sites. In engineering practice, most geological disasters occur in relatively remote areas, and most of the required simulation media need to be sampled in situ and brought back indoors for physical simulation, which requires a lot of manpower and material resources, and will also change during transportation. The physical and chemical properties of the medium affect the effect of the simulation test. In addition, in the indoor simu...
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Login to View More IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 霍艾迪彭建兵朱兴华姜程王小帆韦红郑小路杜伟宏
Owner CHANGAN UNIV