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Channel prototype frost heaving experiment and anti-frost heaving damage inspection system in open system of seasonal freezing soil area

A frost heave test and inspection system technology, applied in the field of canal prototype frost heave test and anti-frost heave damage inspection system under the "open system" in seasonally frozen areas, can solve the difficulty of flexibility and objectively evaluate the optimal measures of anti-frost heave damage. inferior problem

Pending Publication Date: 2020-10-16
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims at the limitation of production operation in actual channels and the lack of flexibility to easily change parameter values, as well as the inaccuracy of indoor scaled-down model tests, which make it difficult to conduct systematic, in-depth, and It is comprehensively carried out, and at the same time, it is impossible to completely and objectively evaluate the pros and cons of anti-frost heave damage measures (that is, all and various measures) in each channel under the same standard, and propose an "open system" in seasonally frozen soil regions The prototype frost heave test of the lower channel and the effect test system of anti (anti) frost heave damage measures can not only satisfy the research on the frost heave damage mechanism of the channel in the seasonally frozen soil area, but also can test various existing or newly proposed anti frost heave measures. Measures to carry out application testing equivalent to engineering practice

Method used

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  • Channel prototype frost heaving experiment and anti-frost heaving damage inspection system in open system of seasonal freezing soil area
  • Channel prototype frost heaving experiment and anti-frost heaving damage inspection system in open system of seasonal freezing soil area
  • Channel prototype frost heaving experiment and anti-frost heaving damage inspection system in open system of seasonal freezing soil area

Examples

Experimental program
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Effect test

Embodiment 1

[0042] See Figure 1-Figure 4 , The channel prototype frost heave test and anti-frost heave damage test system under the "open system" in the seasonal freezing zone of the present invention is composed of the channel lining layer 2, the canal foundation soil 3, the groundwater replenishment system and the temperature guarantee system. In the model, the channel lining layer 2 is set on the canal foundation soil 3. The groundwater replenishment system is composed of the reservoir 4-2 and the water inlet / exhaust pipe 4-1, and the reservoir 4-2 is set on the canal foundation soil Under 3, the water inlet / exhaust pipe 4-1 leads into the reservoir, and the temperature guarantee system is composed of the upper enclosed space above the dike and thermal insulation components in the soil. The upper enclosed space is equipped with a refrigeration device.

Embodiment 2

[0044] The channel prototype frost heave test and anti-frost heave damage inspection system under the seasonal freezing zone "open system" of this example differs from Example 1 in that: further, the channel model adopts a trapezoidal section or a different section The reservoir is set under the bottom of the channel, and the length of the side parallel to the cross section of the channel is not less than the sum of the channel top width and 2 times the channel embankment width, and the channel top width and 2 times the standard freezing depth And the larger value of the two; the side length of the reservoir parallel to the longitudinal axis of the channel is 3n+4 meters, that is, the length of each canal section is 3 meters, and n is the maximum value of the level of each factor considered in the experiment; The distance between the upper surface of the pool floor and the lower surface of the channel floor shall not be greater than the capillary water rise height of the cohesiv...

Embodiment 3

[0047] The channel prototype frost heave test and the anti-frost heave damage inspection system under the seasonal freezing zone "open system" of this example is different from Example 1 and Example 2 in that: further, the reservoir is from the bottom Pave the soil particles of the coarse gravel group, the soil particles of the fine gravel group, and the soil particles of the sand group upwards, with the thickness of each layer being the same and not less than 15cm. To avoid penetration damage, pave two-way water-permeable geotextile between the layers and on the top of the layers. The depth of the reservoir is the sum of the soil thickness of the coarse gravel group soil layer, the fine gravel group soil layer and the sand-grained soil layer, and the depth is not less than 10-20cm, and the top elevation of the pool is higher than the site's multi-year maximum groundwater elevation; The thickness of the wall and the bottom of the pool is determined according to the material stru...

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Abstract

The invention discloses a channel prototype frost heaving experiment and anti-frost heaving damage inspection system in an open system of a seasonal freezing soil area. A channel model is composed ofthe four parts of a channel lining layer, channel foundation soil, a groundwater recharge system and a temperature guarantee system. The channel lining layer is arranged on the channel foundation soil, the groundwater recharge system is composed of a water storage pool and water inlet / exhaust pipes, the water storage pool is arranged under the channel foundation soil, and the water inlet / exhaust pipes are introduced into the water storage pool; and the temperature guarantee system is composed of an upper enclosed space above a channel bank and thermal insulation parts in the soil, and a refrigerating device is arranged in the upper enclosed space. The system can be used for multi-aspect experimental studies such as experimental studies of a channel frost heaving damage mechanism about theseasonal freezing soil area on a prototype channel, effect inspection of new anti-frost heaving damage measures and methods before promotion, advantages and disadvantages of various measures and methods and application conditions of various measures and methods.

Description

Technical field [0001] The present invention relates to a channel prototype frost heave test under the "open system" in the seasonal frozen soil area (the "closed system" can also be realized) and the inspection system for the effect of anti-frost (anti) frost heave damage measures, which is used in the relevant seasonal frozen soil area. The mechanism of channel frost heave damage is tested in prototype channels, and the effect of new anti- (anti-) frost heave damage measures and methods is tested before promotion, the pros and cons of various measures and methods, and the applicable conditions of various measures and methods. Experimental research. Background technique [0002] At present, water resources are relatively scarce, and improving the efficiency of channel water delivery is also a water saving direction that cannot be ignored. However, the rigid-lined channel does not damage under the frost heave of the canal base soil, which guarantees the anti-seepage function of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B1/02E02B5/00
CPCE02B1/02E02B5/00
Inventor 宋玲孙雯李东升李俊杨浚森樊圆圆麻佳王艳坤申瑞华杨禹锟
Owner SHIHEZI UNIVERSITY
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