CN209132137U - A kind of Red Sandstone original position infiltration experiment device - Google Patents
A kind of Red Sandstone original position infiltration experiment device Download PDFInfo
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- CN209132137U CN209132137U CN201821963643.6U CN201821963643U CN209132137U CN 209132137 U CN209132137 U CN 209132137U CN 201821963643 U CN201821963643 U CN 201821963643U CN 209132137 U CN209132137 U CN 209132137U
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Abstract
The utility model discloses a kind of Red Sandstone original position infiltration experiment devices, including the tank, reservoir and the filling pipe filled the water to tank being provided in Red Sandstone, the cross section of Red Sandstone is ladder-like, tank and reservoir are arranged on two adjacent ladders, the height of tank is greater than the height of reservoir, and reservoir is provided at the position of Red Sandstone ladder side；Tank medial surface is equipped with waterproof geotextiles and is not laid with waterproof geotextiles close to the side of Red Sandstone step edges, and reservoir medial surface is equipped with waterproof geotextiles and is not laid with waterproof geotextiles close to the side of Red Sandstone step edges.The utility model at testing position by being arranged tank and reservoir progress Red Sandstone permeability test, and test is convenient, result is accurate, can make up for it disturbance of the previous traditional laboratory seepage for soil sample, more really reflects Red Sandstone infiltration process；Without carrying out producing for sample, test procedure is reduced, reliable and stable, using effect is good.
Description
Technical field
The utility model belongs to Geotechnical Engineering field, more particularly, to a kind of Red Sandstone original position infiltration experiment device.
Background technique
With the development of urban construction, with more and more being utilized to the underground space, the problem of many related ground with
?.It finds that Red Sandstone meets water and easily softens disintegration during subway construction in Lanzhou, is easy to occur under seepage force effect
Quicksand phenomenon, the sudden of quicksand accident often bring unpredictable engineering accident to engineering construction.Existing theory is unanimously recognized
Do not have permeability for Red Sandstone, live Red Sandstone hiding is deep shallower, and top is boulder bed and Groundwater buried depth is abundant, is surveyed by geology
Survey known to construction site underground water be diving, this area seepage flow source mainly from Atmospheric precipitation permeate, in front of the mountains supply and
Lateral runoff supply, it can be seen that Red Sandstone permeability is for generating tremendous influence in process of construction.Due to indoor infiltration
Certain disturbance is inevitably generated in test sampling process, and soil sample size is less than normal after sample preparation, therefore cannot preferably react
The characteristic of original state Rock And Soil.It is therefore proposed that a kind of Red Sandstone original position infiltration experiment device can be better maintained original state Rock And Soil
Characteristic, resulting test result is also more accurate.
Utility model content
The technical problem to be solved by the utility model is in view of the deficiency of the prior art, provide a kind of red sand
Rock original position infiltration experiment device carries out Red Sandstone permeability test, test by the way that tank and reservoir are arranged at testing position
Conveniently, result is accurate, can make up for it disturbance of the previous traditional laboratory seepage for soil sample, more really reflects red sand
Rock infiltration process；Without carrying out producing for sample, test procedure is reduced, reliable and stable, using effect is good.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of Red Sandstone original position permeability test
Device, it is characterised in that: including the tank, reservoir and the filling pipe filled the water to tank being provided in Red Sandstone, institute
State Red Sandstone cross section be it is ladder-like, the tank and reservoir are arranged on two adjacent ladders, the tank
Height be greater than the height of the reservoir, the reservoir is provided at the position of Red Sandstone ladder side, the note
Water meter is installed on waterpipe；
The tank and reservoir are cube pond, and the tank medial surface is equipped with waterproof geotextiles and leans on
The side of nearly Red Sandstone step edges is not laid with waterproof geotextiles, and the first level scale ruler is provided in the tank；It is described
Reservoir medial surface is equipped with waterproof geotextiles and is not laid with waterproof geotextiles, the storage close to the side of Red Sandstone step edges
The second level scale ruler is provided in pond.
Above-mentioned a kind of Red Sandstone original position infiltration experiment device, it is characterised in that: the long a1 and width b1 phase of the tank
It is 0.5m~1m Deng, depth B, distance L of the tank away from Red Sandstone step edges is 1.0m~1.5m.
Above-mentioned a kind of Red Sandstone original position infiltration experiment device, it is characterised in that: the long a2 and width b2 phase of the reservoir
It is 0.5m~1m Deng, depth b, the depth b of the reservoir is less than the depth B of tank.
Above-mentioned a kind of Red Sandstone original position infiltration experiment device, it is characterised in that: the waterproof geotextile laying mode is
Fissure of displacement overlap joint；Transverse lap distance is 40mm~50mm, and longitudinal lap joint distance is 40mm~50mm.
Above-mentioned a kind of Red Sandstone original position infiltration experiment device, it is characterised in that: the waterproof geotextiles connecting portion is used
Pitch bonding oil bonding.
Above-mentioned a kind of Red Sandstone original position infiltration experiment device, it is characterised in that: high between the tank and reservoir
It spends difference H and is not less than 2m.
Compared with the prior art, the utility model has the following advantages:
1, the utility model carries out Red Sandstone permeability test, test by the way that tank and reservoir are arranged at testing position
Conveniently, result is accurate, can make up for it disturbance of the previous traditional laboratory seepage for soil sample, more really reflects red sand
Rock infiltration process.
2, the utility model reduces test procedure, reliable and stable, using effect is good without carrying out producing for sample.
In conclusion the utility model carries out Red Sandstone infiltration examination by the way that tank and reservoir are arranged at testing position
It tests, test is convenient, result is accurate, can make up for it disturbance of the previous traditional laboratory seepage for soil sample, more true anti-
Mirror Red Sandstone infiltration process；Without carrying out producing for sample, test procedure is reduced, reliable and stable, using effect is good.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Description of symbols:
1-tank；2-reservoirs；3-waterproof geotextiles；
4-the first level scale ruler；5-water meters；6-Red Sandstones；
7-filling pipes；8-the second level scale ruler.
Specific embodiment
As shown in Figure 1, the utility model includes the tank 1 being provided in Red Sandstone 6, reservoir 2 and to 1 note of tank
The filling pipe 7 of water, the cross section of the Red Sandstone 6 be it is ladder-like, adjacent two are arranged in the tank 1 and reservoir 2
On a ladder, the height of the tank 1 is greater than the height of the reservoir 2, and the reservoir 2 is provided with against Red Sandstone 6
At the position of ladder side, water meter 5 is installed on the filling pipe 7；
The tank 1 and reservoir 2 are cube pond, and 11 medial surface of tank is equipped with waterproof geotextiles
3 and it is not laid with waterproof geotextiles 3 close to the sides of 6 step edges of Red Sandstone, is provided with the first level scale in the tank 1
Ruler 4；2 medial surface of reservoir is equipped with waterproof geotextiles 3 and is not laid with anti-water and soil close to the side of 6 step edges of Red Sandstone
Work cloth 3 is provided with the second level scale ruler 8 in the reservoir 2.
As shown in Figure 1, suitable position is selected on the Red Sandstone stratum exposed at the scene, by institute when choosing testing position
It states tank 1 and reservoir 2 takes location between Red Sandstone stratum and bottom of foundation ditch, convenient select Red Sandstone carries out infiltration examination in situ
It tests, and then more accurate obtains Red Sandstone infiltration coefficient.According to Darcy's lawWherein Q is infiltration capacity, H
For the height difference of tank 1 and reservoir 2, L is seepage flow length, and K is infiltration coefficient, and A is the section perpendicular to water (flow) direction
Product, the as sectional area of reservoir 2, wherein the long a2 and wide b2 of reservoir 2 can be measured by the second level scale ruler 8.
The excavation that tank 1, reservoir 2 are carried out according to test requirements document, after the completion of tank 1, reservoir 2 are constructed, point
It is not laid on side wall not between tank 1, three side walls of reservoir 2 and bottom surface upper berth waterproof geotextiles 3, two ponds
Waterproof geotextiles 3 place the first level scale ruler using the side for not being laid with waterproof geotextiles 3 as seepage flow face in tank 1
4, the second level scale ruler 8 is placed in reservoir 2, the first level scale ruler 4 and the second level scale ruler 8 can both be surveyed
The actual size of tank 1 and reservoir 2 is measured, and the depth filled the water in tank 1 and reservoir 2 can be measured.?
Water meter 5 is installed on the filling pipe 7, is to record water injection rate.1 moment of plateau tank is kept to be in full during test
Water state, and water injection rate is recorded by water meter 5；The water storage height and storage time for recording reservoir 2 simultaneously, obtain relevant parameter
And then the coefficient of permeability K of Red Sandstone original position permeability test is calculated, complete Red Sandstone original position permeability test.
In the present embodiment, the long a1 of the tank 1 is equal with width b1, depth B be 0.5m~1m, the tank 1 away from
The distance L of 6 step edges of Red Sandstone is 1.0m~1.5m.
In the present embodiment, the long a2 of the reservoir 2 is equal with width b2, and depth b is 0.5m~1m, the reservoir 2
Depth b is less than the depth B of tank 1.
When practice of construction, the length and width of the reservoir 2 and the tank 1 are equal, i.e., the described reservoir 2 and water storage
The length in pond 1 and wide size are 1m, and cutting depth is that the depth b of the reservoir 2 is less than the depth B of tank 1, reservoir 2
Depth b be 0.5m, the depth B of tank 1 is 1m.
In the present embodiment, 3 paving mode of waterproof geotextiles is fissure of displacement overlap joint；Transverse lap distance be 40mm~
50mm, longitudinal lap joint distance are 40mm~50mm.
Using the fissure of displacement overlapped paving mode, makes being completely embedded securely between waterproof geotextiles 3, prevent the water filling in pond
It is permeated from the side for being laid with waterproof geotextiles 3, improves the sealing performance between waterproof geotextiles 3, avoid the leakage of water filling, protected
The accuracy of permeability test result in situ is demonstrate,proved.
In the present embodiment, 3 connecting portion of waterproof geotextiles pitch bonds oil bonding.
In actual use, oil is bonded using pitch to be bonded 3 connecting portion of waterproof geotextiles, be because of pitch
Bonding caking of oil is strong, ensure that the performance between waterproof geotextiles 3 is stablized.
In the present embodiment, height difference H is not less than 2m between the tank 1 and reservoir 2.
In actual use, the Red Sandstone stratum of 6 two sides of the Red Sandstone of selection needs to be flattened in advance, makes adjacent
The side of two ladders is vertical, and surface guarantees that height difference H is not less than between the tank 1 and reservoir 2 without obvious bumps
2m forms the difference that a height is H, it is ensured that the validity of permeability test result in situ.
When the utility model is used, it is filled at design height into tank 1, and water injection rate, note is recorded by water meter 5
Water injection time is recorded, the water-head of tank 1 and reservoir 2 at this time is recorded；After 2 hours, height of water level in tank 1 is read,
The reservoir storage in reservoir 2 is recorded, the water-head of tank 1 and reservoir 2 is recorded；Design is filled into tank 1 again
Highly, and the water-head of water injection rate and water injection time and tank 1 and reservoir 2 is recorded；It is recorded in tank 1 after 2 hours
Height of water level, and record the water-head of the reservoir storage in reservoir 2 and tank 1 and reservoir 2；The above test is repeated several times
Step acquires required test data；Infiltration coefficient is finally obtained according to Darcy's law.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all
According to any simple modification to the above embodiments of the utility model technical spirit, change and equivalent structural changes, still
Belong in the protection scope of technical solutions of the utility model.
Claims (6)
1. a kind of Red Sandstone original position infiltration experiment device, it is characterised in that: including be provided on Red Sandstone (6) tank (1),
Reservoir (2) and the filling pipe (7) filled the water to tank (1), the cross section of the Red Sandstone (6) are ladder-like, the storage
Pond (1) and reservoir (2) are arranged on two adjacent ladders, and the height of the tank (1) is greater than the reservoir (2)
Height, the reservoir (2) is provided at the position of Red Sandstone (6) ladder side, installs on the filling pipe (7)
There are water meter (5)；
The tank (1) and reservoir (2) are cube pond, and tank (1) (1) medial surface is equipped with anti-water and soil
The side of work cloth (3) and close Red Sandstone (6) step edges is not laid with waterproof geotextiles (3), is provided in the tank (1)
First level scale ruler (4)；Reservoir (2) medial surface is equipped with waterproof geotextiles (3) and close to Red Sandstone (6) step edge
The side of edge is not laid with waterproof geotextiles (3), is provided with the second level scale ruler (8) in the reservoir (2).
2. a kind of Red Sandstone original position infiltration experiment device described in accordance with the claim 1, it is characterised in that: the tank (1)
Long a1 it is equal with width b1, depth B is 0.5m~1m, and distance L of the tank (1) away from Red Sandstone (6) step edges be
1.0m~1.5m.
3. a kind of Red Sandstone original position infiltration experiment device according to claim 1 or 2, it is characterised in that: the reservoir
(2) long a2 is equal with width b2, and depth b is 0.5m~1m, and the depth b of the reservoir (2) is less than the depth B of tank (1).
4. a kind of Red Sandstone original position infiltration experiment device according to claim 1 or 2, it is characterised in that: the anti-water and soil
Work cloth (3) paving mode is fissure of displacement overlap joint；Transverse lap distance is 40mm~50mm, and longitudinal lap joint distance is 40mm~50mm.
5. a kind of Red Sandstone original position infiltration experiment device according to claim 1 or 2, it is characterised in that: the anti-water and soil
Work cloth (3) connecting portion pitch bonds oil bonding.
6. a kind of Red Sandstone original position infiltration experiment device according to claim 1 or 2, it is characterised in that: the tank
(1) height difference H is not less than 2m between reservoir (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821963643.6U CN209132137U (en) | 2018-11-26 | 2018-11-26 | A kind of Red Sandstone original position infiltration experiment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821963643.6U CN209132137U (en) | 2018-11-26 | 2018-11-26 | A kind of Red Sandstone original position infiltration experiment device |
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| CN209132137U true CN209132137U (en) | 2019-07-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383950A (en) * | 2022-01-11 | 2022-04-22 | 中国矿业大学 | Semi-consolidated loose body in-situ experimental method |
-
2018
- 2018-11-26 CN CN201821963643.6U patent/CN209132137U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383950A (en) * | 2022-01-11 | 2022-04-22 | 中国矿业大学 | Semi-consolidated loose body in-situ experimental method |
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