CN113176394A - Swelling soil slope edge covering layer detection device and detection method under rainfall-reverse osmosis effect - Google Patents
Swelling soil slope edge covering layer detection device and detection method under rainfall-reverse osmosis effect Download PDFInfo
- Publication number
- CN113176394A CN113176394A CN202110404131.6A CN202110404131A CN113176394A CN 113176394 A CN113176394 A CN 113176394A CN 202110404131 A CN202110404131 A CN 202110404131A CN 113176394 A CN113176394 A CN 113176394A
- Authority
- CN
- China
- Prior art keywords
- rainfall
- slope
- edge covering
- reverse osmosis
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention provides a device and a method for detecting the performance of an expansive soil slope edge covering layer under the rainfall-reverse osmosis synergistic effect, and belongs to the technical field of geotechnical engineering. The method can be used for detection of the swelling soil slope edge covering layer under different slope ratios, detection of the swelling soil slope edge covering layer under different rainfall conditions, different underground water reverse osmosis conditions and rainfall and reverse osmosis synergistic effects, detection of the swelling soil slope edge covering layer under an underground water inrush state, real-time detection of displacement and water content of the swelling soil slope edge covering layer, and disaster early warning and durability evaluation of the swelling soil slope. The test device and the test method have important engineering practical significance and theoretical research value for expanding and applying the technical range of the edge covering method.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering, in particular to a detection device and a detection method for a swelling soil slope edge covering layer under rainfall-reverse osmosis.
Background
The expansive soil side slopes are widely distributed in China, the expansive soil side slopes are different from other side slopes due to the characteristics of expansive soil, and landslide disasters of the expansive soil side slopes have the characteristics of shallow formation, traction, smoothness, long-term property and seasonality, so that the expansive soil side slopes are more difficult to control. The novel edge covering treatment method is to perform closed covering on a lower covering soil body by means of chemical modification of shallow expansive soil so as to prevent infiltration of moisture, has a good effect on treatment of the expansive soil slope, but has no systematic detection means for performance detection of the expansive soil slope edge covering layer under the reverse infiltration of rainfall and underground water at present, and can not perform good real-time monitoring on the edge covering layer.
Therefore, in order to solve the problems, a device for detecting the performance of the swelling soil slope edge covering layer under the rainfall-reverse osmosis synergistic effect is developed from the migration of slope moisture. The device has important engineering practical significance for performance detection and real-time monitoring of the swelling soil slope edge covering layer, and has good research value for real-time monitoring theories of other types of slopes.
Disclosure of Invention
The invention aims to solve the problems and invents a detection device and a detection method for the swelling soil slope edge covering layer under the rainfall-reverse osmosis effect.
The invention aims to realize the purpose, and provides a swelling soil slope edge cladding layer detection device under the rainfall-reverse osmosis effect, which comprises a simulated slope sample box, a simulated rainfall device, a simulated reverse osmosis device, a sensor group and a simulated slope sample arranged in the simulated slope sample box;
the simulated side slope sample consists of a roadbed section, a side slope section and a slope toe section from high to low, wherein the slope toe section is an expanded soil layer, the roadbed section consists of a binding layer and an expanded soil layer from top to bottom, and the side slope section takes a slope surface as a reference and consists of a vegetable layer, a binding layer and an expanded soil layer; the sensor group comprises a plurality of displacement sensors and a plurality of water content sensors, and the displacement sensors and the water content sensors are uniformly distributed on the contact surface of the edge covering layer and the expansion soil layer;
the rainfall simulation device comprises a closed water tank A, the upper part of the water tank A is communicated with a water supply hose A, and a speed measuring pipe A and a water stop clamp A are arranged on the water supply hose A; a plurality of through holes are uniformly distributed at the bottom of the water tank A, a short pipe A is embedded in each through hole, and the short pipe A forms a rainfall water column during rainfall simulation;
the simulated reverse osmosis device comprises a closed water tank B, the lower part of the water tank B is communicated with a water supply hose B, and a speed measuring pipe B and a water stop clamp B are arranged on the water supply hose B;
the simulated side slope test sample box is a uncovered rectangular hollow box body, the shape formed by four side plates is the same as the external shape of the simulated side slope test sample, and a bottom plate of the simulated side slope test box, namely a top plate of the water tank B, namely the simulated side slope test sample box and the water tank B are manufactured into a whole; a plurality of through holes are uniformly distributed on a bottom plate of the simulated slope sample box, a short pipe B is embedded in each through hole, one part of the short pipe B is inserted into the simulated slope sample box, one part of the short pipe B is positioned in the water tank B, and a reverse osmosis water column is formed during the simulation of reverse osmosis;
the rainfall simulation device is installed on the upper portion of the simulated slope sample box, and the position of the rainfall simulation device ensures that rainfall water columns formed by all short pipes A fall on the simulated slope sample in the simulated slope sample box.
Preferably, the length of the slope section is recorded as H2, and the length of the slope foot section is recorded as H1，H1≥1/3H2。
Preferably, the short pipe A and the short pipe B are series products, namely the inner diameters of the short pipe A and the short pipe B are various sizes.
Preferably, the paving material of the edge covering layer is modified expansive soil, and the modified expansive soil is expansive soil repaired by using a modifier.
Preferably, the displacement sensor and the water content sensor are connected with the console through leads.
The invention also provides a method for detecting the swelling soil slope edge covering layer under the rainfall-reverse osmosis, which adopts the device for detecting the swelling soil slope edge covering layer under the rainfall-reverse osmosis according to any one of claims 1 to 5, wherein the edge covering layer detection is the performance detection of the slope edge covering layer, and comprises the following steps of displacement and water content of the edge covering layer;
Determining the length and height of a roadbed section, a side slope section and a slope toe section according to the side slope ratio of the expansive soil side slope to be detected, and determining the layer thickness of a binding layer and the compaction degree of a soil body;
filling the expansive soil sample and the modified expansive soil sample in a simulated slope test box, and filling and compacting from bottom to top to form a simulated slope sample;
in the filling and compacting process, displacement sensors and water content sensors are uniformly distributed between the edge covering layer and the expansion soil layer;
paving a vegetable layer on the edge covering layer of the side slope section;
The performance detection of the side slope edge covering layer comprises one or the combination of any two or more of the performance detection of the side slope edge covering layer under a rainfall state, the performance detection of the side slope edge covering layer under a groundwater reverse osmosis state and the performance detection of the side slope edge covering layer under a rainfall and groundwater reverse osmosis synergistic action state;
specifically, the performance detection of the side slope edge covering layer in a rainfall state enters step 4, the performance detection of the side slope edge covering layer in a groundwater reverse osmosis state enters step 5, and the performance detection of the side slope edge covering layer in a rainfall and groundwater reverse osmosis synergistic action state enters step 6;
step 4, detecting the performance of the edge covering layer of the side slope in a rainfall state
Step 4.1, recording initial reading W of the displacement sensor01、W02...W0nRecording the initial reading Y of the water content sensor01、Y02...Y0nWherein n is the number of displacement sensors and water content sensors respectively;
step 4.2, according to the set interval time t1Recording the data of the rainfall flow rate, displacement sensor and water content sensor under rainfall conditions, in particular, the interval time t1The rainfall flow rate of the rainfall device is adjusted once by adjusting the tightness of the water stop clamp A, and the rainfall flow rate obtained by the adjustment for the mth time is recorded as VjmM is 1,2.. M, M is the maximum adjustment times; recording and precipitation flow velocity VjmReading of the corresponding displacement sensor is recorded as the m-th rainfall displacement reading Wm1、Wm2...WmnRecording and precipitation flow velocity VjmReading of the corresponding water content sensor is recorded as the m-th rainfall water content reading Ym1、Ym2...Ymn；
4.3, analyzing the data obtained in the step 4.1 and the step 4.2 to obtain the displacement of the edge covering layer and the change rule of the water content under different rainfall states;
Step 5.1, recording initial reading J of the displacement sensor01、J02...J0nRecording initial reading I of water content sensor01、I02...I0n；
Step 5.2, according to the set interval time t2Recording the water seepage velocity, the data in the displacement sensor and the water content sensor under the condition of groundwater reverse osmosis, specifically, the interval time t2The water seepage velocity of the reverse osmosis device is adjusted once by adjusting the tightness of the water stop clamp B, and the water seepage velocity obtained by the adjustment for the mth time is recorded as VsmM is 1,2.. M, M is the maximum adjustment times; recording and seepage velocity VsmThe corresponding displacement sensor reading is recorded as the m-th reverse osmosis displacement reading Jm1、Jm2...JmnRecording and seepage velocity VsmReading of the corresponding water content sensor is recorded as the mth reverse osmosis water content reading Im1、Im2...Imn；
Step 5.3, analyzing the data obtained in the step 5.1 and the step 5.2 to obtain the displacement of the edge covering layer and the change rule of the water content under the reverse osmosis state of the underground water;
Step 6.1, recording the initial reading X of the displacement sensor01、X02...X0nRecording the initial reading Z of the water content sensor01、Z02...Z0n；
Step 6.2, according to the set interval time t3Recording data of rainfall flow velocity, seepage flow velocity, displacement sensor and water content sensor under the synergistic action of rainfall and groundwater infiltration, specifically, interval time t3The rainfall flow rate of the rainfall device and the water seepage flow rate of the reverse osmosis device are adjusted once by adjusting the tightness of the water stop clamp A and the water stop clamp B, and the rainfall flow rate obtained by the adjustment for the mth time is recorded as VxmThe water seepage velocity is VtmM is 1,2.. M, M is the maximum adjustment times; recording and precipitation flow velocity VxmWater seepage velocity VtmReading of the corresponding displacement sensor is recorded as the mth cooperative displacement reading Xm1、Xm2...XmnRecording and precipitation flow velocity VxmWater seepage velocity VtmReading of the corresponding moisture content sensor is recorded as the mth cooperative moisture content reading Zm1、Zm2...Zmn；
And 6.3, analyzing the data obtained in the step 6.1 and the step 6.2 to obtain the change rule of the displacement and the water content of the edge covering layer under the rainfall and underground water reverse osmosis synergistic action state.
Preferably, the interval time t1At a time t2At a time t3All the time is 1 minute to 60 minutes,the maximum adjusting times M is more than or equal to 50.
Compared with the prior art, the invention has the beneficial effects that:
1. the real-time displacement detection and the water content monitoring can be carried out on the edge covering layer under the actual environment, and the occurrence of slope disasters is prevented;
2. the method can detect the side slopes with different slope ratios and is suitable for underground water inrush conditions;
3. the rainfall effect and the single groundwater reverse osmosis effect under the condition of single different flow rates can be considered, and the performance detection of the side slope edge covering layer under the rainfall and reverse osmosis synergistic effect can be comprehensively considered;
4. the device and the method principle can be applied to guide the performance detection of the actual side slope edge covering soil;
5. the test device is simple in structure, convenient and fast to operate and high in practicability.
Drawings
FIG. 1 is a schematic view of the overall structure of the detecting unit of the present invention;
FIG. 2 is a schematic view of a structure of a simulated slope specimen according to the present invention;
FIG. 3 is a top view of FIG. 2;
fig. 4 is a perspective view of a simulated slope sample box according to the present invention.
In the figure: 1. simulating a side slope test box; 2. simulating a slope sample; 3. a water tank A; 4. a water supply hose A; 5. a speed measuring tube A; 6. a water stop clamp A; 7. a short pipe A; 8. a water tank B; 9. a water supply hose B; 10. a speed measuring tube B; 11. a water stop clip B; (ii) a 12. A short pipe B; 13. a displacement sensor; 14. a water content sensor; 15. expanding the soil layer; 16. a binding layer; 17. a vegetable layer; 18. a cylindrical steel bracket;
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic overall structure of a model box according to the present invention, fig. 2 is a schematic structural view of a simulated slope sample according to the present invention, fig. 3 is a top view of fig. 2, and fig. 4 is a perspective view of a simulated slope sample box according to the present invention. As can be seen from fig. 1 to 4, the swelling soil slope edge cladding layer detection device under rainfall-reverse osmosis comprises a simulated slope sample box 1, a rainfall simulation device, a simulated reverse osmosis device, a sensor group and a simulated slope sample 2 arranged in the simulated slope sample box 1.
The simulated side slope sample 2 is composed of a roadbed section, a side slope section and a slope toe section from high to low, wherein the slope toe section is an expanded soil layer 15 roadbed section which is composed of a binding layer 16 and an expanded soil layer 15 from top to bottom, and the side slope section is based on a slope surface and composed of a vegetation layer 17, the binding layer 16 and the expanded soil layer 15.
In this embodiment, the length of the slope segment is recorded as H2The length of the slope leg section is H1，H1≥1/3H2. In the present invention, the slope base segment is not detected, and therefore, the length H of the slope base segment is adjusted1Adjustment of different slope ratios can be performed.
In this embodiment, the paving material of the edge covering layer is modified expansive soil, and the modified expansive soil is expansive soil repaired by using a modifier.
The sensor group comprises a plurality of displacement sensors 13 and a plurality of moisture content sensors 14, and the displacement sensors 13 and the moisture content sensors 14 are uniformly distributed on the contact surface of the edge covering layer 16 and the expansion soil layer 15. In this embodiment, the displacement sensor 13 and the moisture content sensor 14 are connected to a console through wires.
The rainfall simulation device comprises a closed water tank A3, the upper part of the water tank A3 is communicated with a water supply hose A4, and a speed measuring pipe A5 and a water stop clamp A6 are arranged on the water supply hose A4. A plurality of through holes are uniformly distributed at the bottom of the water tank A3, and a short pipe A7 is embedded in each through hole, and the short pipe A7 forms a rainfall water column during rainfall simulation. The simulated reverse osmosis device comprises a closed water tank B8, the lower part of a water tank B8 is communicated with a water supply hose B9, and a speed measuring pipe B10 and a water stop clamp B11 are arranged on the water supply hose B9. The simulated side slope sample box 1 is a rectangular hollow box body without a cover, the shape formed by four side plates is the same as the external shape of the simulated side slope sample 2, and the bottom plate of the simulated side slope test box 1, namely the top plate of the water tank B8, namely the simulated side slope sample box 1 and the water tank B8 are manufactured into a whole. A plurality of through holes are uniformly distributed on the bottom plate of the simulated slope sample box 1, a short pipe B12 is embedded in each through hole, a part of the short pipe B12 is inserted into the simulated slope sample box 1, a part of the short pipe B12 is positioned in the water tank B8, and reverse osmosis water columns are formed during simulation reverse osmosis.
In the present embodiment, the short pipe a7 and the short pipe B12 are series products, i.e. the inner diameters of the short pipe a7 and the short pipe B12 are all various sizes. The series products can meet the simulation detection under various rainfall and reverse osmosis conditions.
The rainfall simulation device is arranged at the upper part of the simulated slope sample box 1, and the position of the rainfall simulation device ensures that rainfall water columns formed by all the short pipes A7 fall on the simulated slope sample 2 in the simulated slope sample box 1.
In this embodiment, the rainfall simulator is mounted on the upper part of the simulated slope sample box 1 through four cylindrical steel brackets 18.
Specifically, in this embodiment, the simulated slope sample box 1 is made of organic glass with a thickness of 4cm, and the height of the roadbed section, that is, the height h of the top of the slope1100cm, the height of the slope leg section, i.e. the height h at the bottom of the slope2The total length H of the simulated slope sample 2 is 150cm, the width L of the simulated slope sample is 100cm, and the maximum slope ratio of the slope surface is 3: 1. The aperture of the short pipe A7 is 2mm, the height is 10mm, the number of short pipes is 16, the aperture of the short pipe B12 is 1mm, the height is 5mm, and the number of short pipes is 20.
The invention also provides a detection method of the swelling soil slope edge covering layer under the rainfall-reverse osmosis effect, wherein the edge covering layer detection is the performance detection of the slope edge covering layer and comprises the displacement and the water content of the edge covering layer, and the detection method comprises the following steps;
Determining the length and height of a roadbed section, a side slope section and a slope toe section according to the side slope ratio of the expansive soil side slope to be detected, and determining the layer thickness of the edge covering layer 16 and the compaction degree of a soil body;
filling the expansive soil sample and the modified expansive soil sample in a simulated slope test box 1, and filling and compacting from bottom to top to form a simulated slope sample 2;
in the filling and compacting process, displacement sensors 13 and water content sensors 14 are uniformly distributed between the edge covering layer 16 and the expansion soil layer 15;
paving a vegetable layer on the edge covering layer of the side slope section;
The performance detection of the side slope edge covering layer comprises one or the combination of any two or more of the performance detection of the side slope edge covering layer under a rainfall state, the performance detection of the side slope edge covering layer under a groundwater reverse osmosis state and the performance detection of the side slope edge covering layer under a rainfall and groundwater reverse osmosis synergistic action state;
specifically, the performance detection of the side slope edge covering layer in a rainfall state enters step 4, the performance detection of the side slope edge covering layer in a groundwater reverse osmosis state enters step 5, and the performance detection of the side slope edge covering layer in a rainfall and groundwater reverse osmosis synergistic action state enters step 6;
step 4, detecting the performance of the edge covering layer of the side slope in a rainfall state
Step 4.1, recording the initial reading W of the displacement sensor 1301、W02...W0nRecording the initial reading Y of the moisture content sensor 1401、Y02...Y0nWherein n is the number of displacement sensors and water content sensors respectively;
step 4.2, according to the set interval time t1Recording the rainfall flow rate under rainfall conditions, data in displacement sensor 13 and moisture content sensor 14, specifically, the interval time t1The rainfall flow rate of the rainfall device is adjusted once by adjusting the tightness of the water stop clamp A6, and the rainfall flow rate obtained by the adjustment for the mth time is recorded as VjmM is 1,2.. M, M is the maximum adjustment times; recording and precipitation flow velocity VjmThe corresponding displacement sensor 13 is read and recorded as the m-th rainfall displacement reading Wm1、Wm2...WmnRecording and precipitation flow velocity VjmThe corresponding moisture content sensor 14 is read and recorded as the moisture content reading Y of the mth rainfallm1、Ym2...Ymn；
4.3, analyzing the data obtained in the step 4.1 and the step 4.2 to obtain the displacement of the edge covering layer and the change rule of the water content under different rainfall states;
Step 5.1, recording the initial reading J of the displacement sensor 1301、J02...J0nRecording the initial reading I of the water content sensor 1401、I02...I0n；
Step 5.2, according to the set interval time t2Recording the water seepage flow rate under the condition of groundwater reverse osmosis, and data in the displacement sensor 13 and the water content sensor 14, specifically, the interval time t2The water seepage flow rate of the reverse osmosis device is adjusted once by adjusting the tightness of the water stop clamp B11, and the water seepage flow rate obtained by the adjustment for the mth time is recorded as VsmM is 1,2.. M, M is the maximum adjustment times; recording and seepage velocity VsmThe corresponding displacement sensor 13 reading is recorded as the m-th reverse osmosis displacement reading Jm1、Jm2...JmnRecording and seepage velocity VsmThe corresponding water content sensor 14 is read and recorded as the m-th reverse osmosis water content reading Im1、Im2...Imn；
Step 5.3, analyzing the data obtained in the step 5.1 and the step 5.2 to obtain the displacement of the edge covering layer and the change rule of the water content under the reverse osmosis state of the underground water;
Step 6.1, recording the initial reading X of the displacement sensor 1301、X02...X0nRecording the initial reading Z of the moisture content sensor 1401、Z02...Z0n；
Step 6.2, according to the set interval time t3Recording the rainfall flow rate and the water seepage flow rate under the synergistic action of rainfall and groundwater infiltration, and data in the displacement sensor 13 and the water content sensor 14, specifically, the interval time t3Then, the loosening of the water stop clip A6 and the water stop clip B11 is adjustedThe rainfall flow rate of the rainfall device and the water seepage flow rate of the reverse osmosis device are adjusted once by tightness, and the rainfall flow rate obtained by the adjustment for the mth time is recorded as VxmThe water seepage velocity is VtmM is 1,2.. M, M is the maximum adjustment times; recording and precipitation flow velocity VxmWater seepage velocity VtmThe corresponding displacement sensor 13 is read and recorded as the m-th cooperative displacement reading Xm1、Xm2...XmnRecording and precipitation flow velocity VxmWater seepage velocity VtmThe corresponding moisture content sensor 14 reading is recorded as the mth cooperative moisture content reading Zm1、Zm2...Zmn；
And 6.3, analyzing the data obtained in the step 6.1 and the step 6.2 to obtain the change rule of the displacement and the water content of the edge covering layer under the rainfall and underground water reverse osmosis synergistic action state.
In the present embodiment, the interval time t1At a time t2At a time t3All of the time periods were 10 minutes, and the maximum number of times of adjustment M was 50.
The detection device provided by the invention is simple and convenient to carry, and the expansive soil sample can be sampled and manufactured on site.
Claims (7)
1. A swelling soil slope edge covering layer detection device under rainfall-reverse osmosis is characterized by comprising a simulated slope sample box (1), a rainfall simulation device, a simulated reverse osmosis device, a sensor group and a simulated slope sample (2) arranged in the simulated slope sample box (1);
the simulated side slope sample (2) consists of a roadbed section, a side slope section and a slope toe section from high to low, wherein the slope toe section is an expanded soil layer, the roadbed section consists of a binding layer (16) and an expanded soil layer (15) from top to bottom, and the side slope section takes a slope surface as a reference and consists of a vegetation layer (17), the binding layer (16) and the expanded soil layer (15); the sensor group comprises a plurality of displacement sensors (13) and a plurality of water content sensors (14), and the displacement sensors (13) and the water content sensors (14) are uniformly distributed on the contact surface of the edge covering layer (16) and the expansion soil layer (15);
the rainfall simulation device comprises a closed water tank A (3), the upper part of the water tank A (3) is communicated with a water supply hose A (4), and a speed measuring pipe A (5) and a water stop clamp A (6) are arranged on the water supply hose A (4); a plurality of through holes are uniformly distributed at the bottom of the water tank A (3), a short pipe A (7) is embedded in each through hole, and the short pipe A (7) forms a rainfall water column during rainfall simulation;
the simulated reverse osmosis device comprises a closed water tank B (8), the lower part of the water tank B (8) is communicated with a water supply hose B (9), and a speed measuring pipe B (10) and a water stop clamp B (11) are arranged on the water supply hose B (9);
the simulated side slope test sample box (1) is a rectangular hollow box body without a cover, the shape formed by four side plates is the same as the external shape of the simulated side slope test sample (2), the bottom plate of the simulated side slope test box (1), namely the top plate of the water tank B (8), namely the simulated side slope test sample box (1) and the water tank B (8) are manufactured into a whole; a plurality of through holes are uniformly distributed on a bottom plate of the simulated slope sample box (1), a short pipe B (12) is embedded in each through hole, one part of the short pipe B (12) is inserted into the simulated slope sample box (1), one part of the short pipe B is positioned in the water tank B (8), and a reverse osmosis water column is formed during reverse osmosis simulation;
the rainfall simulation device is installed on the upper portion of the simulated slope sample box (1), and rainfall water columns formed by all short pipes A (7) are guaranteed to fall on the simulated slope sample (2) in the simulated slope sample box (1) at the position.
2. The apparatus of claim 1, wherein the length of the slope section is recorded as H2The length of the slope leg section is H1，H1≥1/3H2。
3. The apparatus for detecting the slope bordure of expansive soil under rainfall-reverse osmosis according to claim 1, wherein the short pipe A (7) and the short pipe B (12) are series products, that is, the inner diameters of the short pipe A (7) and the short pipe B (12) are various sizes.
4. The device for detecting the slope bordure layer of the expansive soil under rainfall-reverse osmosis according to claim 1, wherein the laying material of the bordure layer (16) is modified expansive soil which is restored by a modifier.
5. The device for detecting the swelling soil slope bordure layer under rainfall-reverse osmosis according to claim 1, wherein the displacement sensor (13) and the moisture content sensor (14) are connected with a console through leads.
6. A method for detecting an expansive soil slope edge covering layer under rainfall-reverse osmosis, which adopts the device for detecting the expansive soil slope edge covering layer under rainfall-reverse osmosis according to any one of claims 1-5, wherein the edge covering layer detection is the detection of the performance of the slope edge covering layer and comprises the displacement and the water content of the edge covering layer, and is characterized by comprising the following steps;
step 1, simulating the filling of a slope sample (2)
Determining the length and height of a roadbed section, a side slope section and a slope toe section according to the side slope ratio of the expansive soil side slope to be detected, and determining the layer thickness of a binding layer (16) and the compaction degree of a soil body;
filling the expansive soil sample and the modified expansive soil sample in a simulated slope test box (1), and filling and compacting from bottom to top to form a simulated slope sample (2);
in the filling and compacting process, displacement sensors (13) and water content sensors (14) are uniformly distributed between the edge covering layer (16) and the expansion soil layer (15);
a vegetable layer (17) is laid on the edge covering layer (16) of the side slope section;
step 2, adjusting a water stop clamp A (6), a water stop clamp B (11) to a water supply hose A (4) and a water supply hose B (9) to be in a closed state;
step 3, setting the performance detection type of the edge covering layer of the side slope
The performance detection of the side slope edge covering layer comprises one or the combination of any two or more of the performance detection of the side slope edge covering layer under a rainfall state, the performance detection of the side slope edge covering layer under a groundwater reverse osmosis state and the performance detection of the side slope edge covering layer under a rainfall and groundwater reverse osmosis synergistic action state;
specifically, the performance detection of the side slope edge covering layer in a rainfall state enters step 4, the performance detection of the side slope edge covering layer in a groundwater reverse osmosis state enters step 5, and the performance detection of the side slope edge covering layer in a rainfall and groundwater reverse osmosis synergistic action state enters step 6;
step 4, detecting the performance of the edge covering layer of the side slope in a rainfall state
Step 4.1, recording initial reading W of the displacement sensor (13)01、W02...W0nRecording the initial reading Y of the moisture content sensor (14)01、Y02...Y0nWherein n is the number of the displacement sensors (13) and the water content sensors (14) respectively;
step 4.2, according to the set interval time t1Recording the precipitation flow rate, displacement sensor (13) and moisture content sensor (14) data under rainfall conditions, in particular, at intervals of time t1The rainfall flow rate of the rainfall device is adjusted once by adjusting the tightness of the water stop clamp A (6), and the rainfall flow rate obtained by the adjustment for the mth time is recorded as VjmM is 1,2.. M, M is the maximum adjustment times; recording and precipitation flow velocity VjmThe reading of the corresponding displacement sensor (13) is recorded as the m-th rainfall displacement reading Wm1、Wm2...WmnRecording and precipitation flow velocity VjmThe corresponding moisture content sensor (14) reads and records as the mth rainfall moisture content reading Ym1、Ym2...Ymn；
4.3, analyzing the data obtained in the step 4.1 and the step 4.2 to obtain the displacement of the edge covering layer and the change rule of the water content under different rainfall states;
step 5, detecting the performance of the side slope edge covering layer in the underground water reverse osmosis state
Step 5.1, recording the initial reading J of the displacement sensor (13)01、J02...J0nRecording the initial reading I of the moisture content sensor (14)01、I02...I0n；
Step 5.2, according to the set interval time t2Recording the water seepage flow rate under the condition of groundwater reverse osmosis, and data in the displacement sensor (13) and the water content sensor (14), in particularAt intervals of time t2The water seepage flow rate of the reverse osmosis device is adjusted once by adjusting the tightness of the water stop clamp B (11), and the water seepage flow rate obtained by the adjustment for the mth time is recorded as VsmM is 1,2.. M, M is the maximum adjustment times; recording and seepage velocity VsmThe corresponding displacement sensor (13) is read and recorded as the m-th reverse osmosis displacement reading Jm1、Jm2...JmnRecording and seepage velocity VsmThe corresponding water content sensor (14) reads and records as the mth reverse osmosis water content reading Im1、Im2...Imn；
Step 5.3, analyzing the data obtained in the step 5.1 and the step 5.2 to obtain the displacement of the edge covering layer and the change rule of the water content under the reverse osmosis state of the underground water;
step 6, detecting the performance of the side slope edge covering layer under the rainfall and groundwater reverse osmosis synergistic action state
Step 6.1, recording the initial reading X of the displacement sensor (13)01、X02...X0nRecording the initial reading Z of the moisture content sensor (14)01、Z02...Z0n；
Step 6.2, according to the set interval time t3Recording the rainfall flow speed, the water seepage flow speed, the data in the displacement sensor (13) and the water content sensor (14) under the synergistic action of rainfall and groundwater infiltration, specifically, the interval time t3The rainfall flow rate of the rainfall device and the water seepage flow rate of the reverse osmosis device are adjusted once by adjusting the tightness of the water stop clamp A (6) and the water stop clamp B (11), and the rainfall flow rate obtained by the adjustment for the mth time is recorded as VxmThe water seepage velocity is VtmM is 1,2.. M, M is the maximum adjustment times; recording and precipitation flow velocity VxmWater seepage velocity VtmThe reading of the corresponding displacement sensor (13) is recorded as the m-th cooperative displacement reading Xm1、Xm2...XmnRecording and precipitation flow velocity VxmWater seepage velocity VtmThe corresponding moisture content sensor (14) is read and recorded as the mth cooperative moisture content reading Zm1、Zm2...Zmn；
And 6.3, analyzing the data obtained in the step 6.1 and the step 6.2 to obtain the change rule of the displacement and the water content of the edge covering layer under the rainfall and underground water reverse osmosis synergistic action state.
7. The method for detecting the slope bordure of expansive soil under rainfall-reverse osmosis, according to claim 6, wherein the interval t is1At a time t2At a time t3All the time is 1-60 minutes, and the maximum adjusting time M is more than or equal to 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110404131.6A CN113176394A (en) | 2021-04-14 | 2021-04-14 | Swelling soil slope edge covering layer detection device and detection method under rainfall-reverse osmosis effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110404131.6A CN113176394A (en) | 2021-04-14 | 2021-04-14 | Swelling soil slope edge covering layer detection device and detection method under rainfall-reverse osmosis effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113176394A true CN113176394A (en) | 2021-07-27 |
Family
ID=76923220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110404131.6A Pending CN113176394A (en) | 2021-04-14 | 2021-04-14 | Swelling soil slope edge covering layer detection device and detection method under rainfall-reverse osmosis effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113176394A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019135A (en) * | 2021-09-23 | 2022-02-08 | 广西交科集团有限公司 | Test device for simulating expansive soil slope crack development process under dry-wet circulation effect |
| CN116298207A (en) * | 2023-04-03 | 2023-06-23 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing instability of slope with fissure under rainfall and groundwater level coupling |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728435A (en) * | 2014-01-15 | 2014-04-16 | 水利部交通运输部国家能源局南京水利科学研究院 | Slope simulation test device and test method under coupling effects of rainfall and underground water |
| CN207300780U (en) * | 2017-09-28 | 2018-05-01 | 合肥工业大学 | Side slope strength test device is studied in a kind of indoor simulation rainfall |
| CN108828189A (en) * | 2018-06-21 | 2018-11-16 | 成都理工大学 | A kind of method that simulated groundwater induces soil slope instability |
| CN109736157A (en) * | 2019-02-25 | 2019-05-10 | 长沙理工大学 | Highway Expansive Soil Roadbed Slope deformation prediction method based on wetting balance |
| CN209311478U (en) * | 2018-12-24 | 2019-08-27 | 西安建筑科技大学 | A kind of intact loess side slope simulation test device that rainfall infiltration level of ground water is controllable |
| CN110514809A (en) * | 2019-08-28 | 2019-11-29 | 东北大学 | Rock slope with along layer near cut simulation test device and test method under rainfall and underground water coupling |
| CN110618086A (en) * | 2019-10-15 | 2019-12-27 | 中国矿业大学(北京) | Side slope device for simulating seepage-freeze thawing coupling effect and using method |
| AU2020104397A4 (en) * | 2020-12-30 | 2021-03-18 | Liaoning Technical University | Experimental Facility and Method for Simulating Hydrodynamic Sand Carrying under Coupled Action of Seepage and Vibration |
-
2021
- 2021-04-14 CN CN202110404131.6A patent/CN113176394A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728435A (en) * | 2014-01-15 | 2014-04-16 | 水利部交通运输部国家能源局南京水利科学研究院 | Slope simulation test device and test method under coupling effects of rainfall and underground water |
| CN207300780U (en) * | 2017-09-28 | 2018-05-01 | 合肥工业大学 | Side slope strength test device is studied in a kind of indoor simulation rainfall |
| CN108828189A (en) * | 2018-06-21 | 2018-11-16 | 成都理工大学 | A kind of method that simulated groundwater induces soil slope instability |
| CN209311478U (en) * | 2018-12-24 | 2019-08-27 | 西安建筑科技大学 | A kind of intact loess side slope simulation test device that rainfall infiltration level of ground water is controllable |
| CN109736157A (en) * | 2019-02-25 | 2019-05-10 | 长沙理工大学 | Highway Expansive Soil Roadbed Slope deformation prediction method based on wetting balance |
| CN110514809A (en) * | 2019-08-28 | 2019-11-29 | 东北大学 | Rock slope with along layer near cut simulation test device and test method under rainfall and underground water coupling |
| CN110618086A (en) * | 2019-10-15 | 2019-12-27 | 中国矿业大学(北京) | Side slope device for simulating seepage-freeze thawing coupling effect and using method |
| AU2020104397A4 (en) * | 2020-12-30 | 2021-03-18 | Liaoning Technical University | Experimental Facility and Method for Simulating Hydrodynamic Sand Carrying under Coupled Action of Seepage and Vibration |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019135A (en) * | 2021-09-23 | 2022-02-08 | 广西交科集团有限公司 | Test device for simulating expansive soil slope crack development process under dry-wet circulation effect |
| CN116298207A (en) * | 2023-04-03 | 2023-06-23 | 水利部交通运输部国家能源局南京水利科学研究院 | Device and method for testing instability of slope with fissure under rainfall and groundwater level coupling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101101707B1 (en) | A ground contact type artificial rainfall apparatus for estimating infiltration characteristics into the ground and an in-situ infiltration velocity measurement equipment using thereof | |
| CN113176394A (en) | Swelling soil slope edge covering layer detection device and detection method under rainfall-reverse osmosis effect | |
| CN108195723B (en) | Permeation grouting test system and method for reinforcing loose gravel soil | |
| Constantz et al. | The use of streambed temperature profiles to estimate the depth, duration, and rate of percolation beneath arroyos | |
| Urciuoli et al. | Long-term investigations on the pore pressure regime in saturated and unsaturated sloping soils | |
| Zhan | Field and laboratory study of an unsaturated expansive soil associated with rain-induced slope instability | |
| CN203096683U (en) | Model test device of embankment project seepage failure development process | |
| CN110297074B (en) | Landslide model test device | |
| Rahardjo et al. | Comprehensive instrumentation for real time monitoring of flux boundary conditions in slope | |
| WO2011022932A1 (en) | Testing method and device for foundation bed coefficient test | |
| CN203452104U (en) | Laboratory simulation testing device for underground water seepage blocked by pile foundations | |
| Rivera-Hernandez et al. | Integrating field monitoring and numerical modeling to evaluate performance of a levee under climatic and tidal variations | |
| Zhan et al. | Instrumentation of an unsaturated expansive soil slope | |
| Stander et al. | Novel use of time domain reflectometry in infiltration-based low impact development practices | |
| Syrrakou et al. | Experimentally determined evaporation rates in pervious concrete systems | |
| van der Kamp et al. | Moisture loading—the hidden information in groundwater observation well records | |
| CN106568697B (en) | A kind of infiltrative indoor model test device of test geomembrane and operating method | |
| Chan et al. | Field performance of in-service cast iron gas reticulation pipe buried in reactive clay | |
| Stewart et al. | Field measurements of soil cracks | |
| Sherlock et al. | Effects of experimental uncertainty on the calculation of hillslope flow paths | |
| CN110988302A (en) | Model device of vertical isolation engineering barrier based on dry-wet cycle and use method and application thereof | |
| Mijares et al. | Field-scale evaluation of lysimeters versus actual earthen covers | |
| CN214473329U (en) | Test device for simulating landslide to be converted into debris flow | |
| CN114965210A (en) | Permeable asphalt pavement rainfall infiltration evaluation method based on indoor test and unsaturated hydraulic parameter inversion | |
| CN107421866B (en) | Test device for simulating drainage seepage state of tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210727 |
|
| RJ01 | Rejection of invention patent application after publication |