Large-sized landslide intelligent model testing system under combined effect of rainfall and reservoir water

A combined effect and model test technology, applied to teaching models, educational tools, instruments, etc., can solve the problems of device reusability, poor multi-functionality, inability to simulate uneven rainfall intensity, uneven stress, etc., and achieve high practical value , strong applicability and simple operation

Inactive Publication Date: 2014-01-22
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many deficiencies, such as the inability to realize the cooperative intelligent control among various devices, the inability to simulate uneven rainfall intensity, the inability to realize the simulation of inhomogeneous ground stress, and poor reusability and multi-functionality of the devices.

Method used

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  • Large-sized landslide intelligent model testing system under combined effect of rainfall and reservoir water
  • Large-sized landslide intelligent model testing system under combined effect of rainfall and reservoir water
  • Large-sized landslide intelligent model testing system under combined effect of rainfall and reservoir water

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: Structure and use of test system

[0040] Such as figure 1 Therefore, the present invention includes: a flexible slope surface test tank 1, a reservoir water fluctuation simulation device 2, a landslide aquifer simulation water supply device 3, a multi-physical quantity monitoring device 4, a rainfall simulation circulation water supply device 5, a distributed spraying rainfall simulation device 6, Integrated intelligent controller 7, computer and system control software 8, test frame structure and loading device 9. The flexible slope test tank 1 further includes a flexible slope structure 101 , a slope hydraulic lifting device 102 , and a non-uniform landslide body material 103 . The flexible slope structure is composed of two layers of high-strength steel wire grid sandwiched by a layer of high-strength geotextile, which has the characteristics of high strength, waterproof, light weight and good conformability. The slope hydraulic lifting device 102 in...

Embodiment 2

[0051] Embodiment 2: the preparation of formula I polymer

[0052] The raw materials and reagents used were purchased from Sigma-Aldrich Company.

[0053] Step 1: Add 20 ml of glacial acetic acid to 10 mmol of leucine, stir to dissolve at room temperature, add 10 mmol of o-dibromobenzene to the solution of leucine in glacial acetic acid, and react at 60° C. for 24 hours. Stop the reaction, spin off the glacial acetic acid in the reaction solution, and vacuumize for 1 hour to obtain a white viscous solid; add deionized water to have a solid precipitate, then collect the filter residue by suction filtration, and repeatedly wash the filter cake to obtain a white product without purification used directly in the next step.

[0054] Step 2: Add 7.6mmol of the compound obtained in Step 1 into a 250ml round-bottomed flask, add 15ml of reformed toluene, redistill 15.38mmol of triethylammonium, after the addition is completed, vigorously stir the reaction under reflux for 2h, remove ...

Embodiment 3

[0060] Embodiment 3: the preparation of formula II polymer

[0061] Step 1: Using trimethylsilylacetylene as a raw material, under the condition of nitrogen protection at -78°C, react with butyllithium and 4,4'-dibromobenzophenone in equal amounts to form a hydroxyl-containing terminal alkyne bond Compound; the specific operation is: add 17mmol TMSA to a 250ml three-necked flask, add 30ml anhydrous tetrahydrofuran, cool to -78°C, slowly add 15.6mmol of a 2.4M butyllithium solution dropwise, and keep warm for 30min. 14.2 mmol of 4,4'-dibromobenzophenone was added. After 12 hours, deionized water and 14.2 mmol of tetrabutylammonium fluoride were added. The organic layer was extracted with dichloromethane, spin-dried and passed through the column with dichloromethane:petroleum ether=3:1 to obtain a pale yellow solid compound.

[0062] Step 2: The product obtained in step 1 is catalyzed by pyridine p-toluenesulfonate with a mole fraction ratio of 5%, and undergoes a dehydration ...

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Abstract

The invention discloses a large-sized landslide intelligent model testing system under a combined effect of rainfall and reservoir water. The system comprises a flexible slope testing groove and a distributed spray rainfall simulation device, wherein a slope hydraulic lifting device comprises a plurality of groups of electric hydraulic jacks. The flexible slop structure in the flexible slop testing groove mainly comprises two layers of high-strength steel wire grids and a high-strength geotechnical cloth sandwiched by the two layers of high-strength steel wire grids; the geotechnical cloth is prepared from polymer expressed by a formula I; Mw of the polymer in the formula I is 5.8*10<4>, and the molecular weight distribution index is 1.298; the distributed spray rainfall simulation device comprises a distributed spray rainfall device and a windshield structure; the rainfall device is formed by combining upper and lower layers of spray pipes of different diameters and sprinklers corresponding to the diameters of nozzles; the windshield structure is arranged below the rainfall device, can be fixedly arranged on the inner side of a test rack and is prepared from the polymer shown by a formula II; Mw of the high molecular polymer is 5.115*10<4>, and the molecular weight distribution index is 1.761.

Description

technical field [0001] The invention relates to an intelligent model test system for large-scale landslides under the combined action of rainfall and reservoir water, in particular to a test platform for the whole process simulation of geological disasters such as landslides and mud-rock flows. This patent was funded by the National 973 Project "Full Life Cycle Performance Evolution and Safety Control of High and Steep Slopes of Large Water Conservancy and Hydropower Projects". Background technique [0002] The reactivation and deformation of landslides induced by reservoir water fluctuation and rainfall are one of the common geological disasters in the reservoir area, and the deformation process is a complex geological process under the joint action of internal and external factors. The internal cause mainly lies in the geological structure and stratum lithology of the landslide, while the external cause is the impact of reservoir water fluctuation, atmospheric rainfall, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/40
Inventor 刘晓丽王恩志林鹏钟建文刘中港高岩堂吕奇峰格桑多吉
Owner TSINGHUA UNIV
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