Landslide Model Test Device with Runoff-Seepage Separation
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Solution Overview
Problem
Conventional landslide model test methods rely heavily on manual monitoring, which is time-consuming and ineffective in accurately capturing the detailed hydrological responses of slopes before and after a landslide, particularly in distinguishing between runoff and seepage flow rates and changes in water content and pore water pressure.
Innovation Solution
A landslide model test device and method that includes a soil slope simulation unit, rainfall simulation unit, runoff-seepage separation unit, and monitoring module to automatically and real-time monitor runoff and seepage flow rates, water content, and pore water pressure, utilizing sensors and cameras to collect multi-variable data for synchronous monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual monitoring methods are used for runoff and seepage flow rate measurement, then the device complexity is low, but the measurement precision and productivity are insufficient
Solution Approach 1:
The monitoring system is segmented into specialized sub-units: a runoff flow rate monitoring unit with runoff collection groove and sedimentation tank, and a seepage flow rate monitoring unit with seepage collection groove and sedimentation tank. This segmentation allows each unit to focus on specific measurement tasks, improving measurement precision while keeping individual units relatively simple.
Solution Approach 2:
Sedimentation tanks are introduced as intermediary devices between the collection grooves and measurement instruments. These tanks separate water flow from soil particles, allowing automated sensors to accurately measure flow rates without being affected by suspended solids, thereby improving measurement precision.
2Productivity
If manual monitoring is used, then the device complexity is low, but the productivity and monitoring frequency are limited
Solution Approach 1:
The monitoring system is designed to operate automatically without continuous human intervention. Sensors continuously measure water levels in sedimentation tanks, and the system self-regulates by pumping water back to the reservoir when thresholds are reached, significantly improving productivity and monitoring frequency.
Solution Approach 2:
The system maintains continuous monitoring through automated sensors that constantly detect water level changes in both runoff and seepage collection systems. This continuous action ensures no critical changes are missed, greatly enhancing productivity compared to periodic manual monitoring.
3Measurement precision
If conventional flow monitoring is used, then the device complexity is low, but the measurement precision of hydrological responses is insufficient
Solution Approach 1:
The system separates runoff and seepage monitoring into distinct units with dedicated collection grooves and sedimentation tanks. This segmentation enables precise measurement of each flow type independently, capturing detailed hydrological responses that would be missed by conventional combined monitoring.
Solution Approach 2:
Sedimentation tanks serve as intermediary devices that isolate water flow from soil particles before measurement. This separation allows precision instruments to accurately detect hydrological responses without interference from suspended solids, significantly improving measurement precision.
4Measurement precision
If runoff and seepage are monitored together, then the device complexity is low, but the measurement precision of separate flow rates is insufficient
Solution Approach 1:
The monitoring system is divided into two independent units: a runoff flow rate monitoring unit with its own collection groove and sedimentation tank, and a seepage flow rate monitoring unit with separate collection and measurement components. This segmentation enables precise independent measurement of each flow type.
Solution Approach 2:
Separate sedimentation tanks are introduced as intermediary devices for each flow type. These tanks independently separate water from soil particles in runoff and seepage streams, allowing precise flow rate measurement of each type without cross-contamination or measurement interference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables automatic and real-time monitoring of runoff and seepage flow rates, as well as changes in water content and pore water pressure, providing comprehensive data for understanding the initiation mechanism of rainfall-induced landslides, thereby improving the accuracy and efficiency of landslide research and prevention.
Implementation Method 1
a runoff-seepage separation unit, disposed at an end of the soil slope simulation unit and configured to implement separation of runoff from seepage of the slope under the effect of rainfall; the runoff-seepage separation unit including a porous plate disposed at an end of the model slot
Implementation Method 2
a weighing device may be provided under each of the two sedimentation tanks and the water collection tank
Implementation Method 3
monitoring module, cooperated with the runoff-seepage separation unit and configured to monitor runoff and seepage flow rates of the slope, changes in water content and pore water pressure within the slope
Data Source
AI summary
The present disclosure relates to the technical field of landslide hazard model tests, and in particular to a landslide model test method and device for realizing multi-variable synchronous monitoring. In the test device, a soil slope simulation unit is configured to pile up a soil slope and simulate different inclinations of the slope. A rainfall simulation unit is configured to simulate rainfall of different intensities and induce a landslide. A runoff-seepage separation unit is configured to realize separation of runoff from seepage of the slope under the effect of rainfall. A monitoring module is configured to monitor runoff and seepage flow rates of the slope, changes in water content and pore water pressure within the slope, and a morphological change of the slope under the effect of rainfall, to obtain a mechanism of rainfall-induced landslide deformation and damage based on changes in the flow rate.