CN212904870U - Soil-rock mixture slope stability monitoring and early warning system and model - Google Patents
Soil-rock mixture slope stability monitoring and early warning system and model Download PDFInfo
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- CN212904870U CN212904870U CN202021524987.4U CN202021524987U CN212904870U CN 212904870 U CN212904870 U CN 212904870U CN 202021524987 U CN202021524987 U CN 202021524987U CN 212904870 U CN212904870 U CN 212904870U
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Abstract
A soil-rock mixture slope stability monitoring and early warning system and a model solve the problem that no comprehensive monitoring and early warning system exists in the prior art. A plurality of resistance strain type soil pressure cells and temperature and humidity sensors are distributed on each layer of slope platform in the model; measuring lines are arranged in the east-west direction and the south-north direction of the slope top of the side slope, and electrode copper bars are arranged at equal intervals along each measuring line; the resistance strain type soil pressure cell is connected with a resistance strain acquisition instrument through a cable, and the resistance strain acquisition instrument is in wired or wireless transmission with a computer; the temperature and humidity sensor is connected with the converter through a cable, and the converter is in wired or wireless transmission with the computer; the electrode copper bar is connected with the direct current method instrument through a cable conductor and a cable clamp, and the direct current method instrument performs wireless data transmission with a computer through Bluetooth. A solution is provided for monitoring and early warning of the slope stability of the soil-rock mixture, and the actual requirements of engineering can be met.
Description
Technical Field
The utility model belongs to the technical field of highway engineering side slope monitoring, concretely relates to soil and stone mixture side slope stability monitoring and early warning system and model.
Background
According to statistics, most of geological disasters which occur in China are closely related to slope instability, and the slope instability can cause a large amount of casualties and bring immeasurable direct economic loss to the society. In order to avoid geological disasters caused by slope instability as much as possible, the research on the slope stability is started from the aspects of monitoring and early warning, and the innovation of the slope stability monitoring and early warning method and the development of the technology are effective ways for preventing the slope instability.
The traditional instrument monitoring technology in China usually adopts a point belt surface and a point belt body, so that comprehensive monitoring cannot be realized, the monitoring method is often limited by a slope deformation stage, climatic conditions and economic conditions, and the traditional instrument monitoring technology is low in automation and instantaneity. With the development of the times, a convenient, economic, efficient and intelligent slope stability monitoring method becomes a future development trend.
For example, disclose a soil slope stability monitoring and early warning device in CN210341864U, this the utility model discloses a clamp formula connector forms the measurement body of rod with a plurality of measuring rod festival fixed connection, inserts in the side slope, lays the sensor in body of rod bottom position, and the probe of measuring soil body moisture is installed to the sensor bottom to use the gauze parcel, pass through early warning device with the water content change situation in the side slope soil body with signal lamp form to external transmission signal. The technology only carries out monitoring and early warning of slope stability through water content change, and the method is single
For another example, CN206160960U discloses a slope stability monitoring and landslide early warning forecasting device based on an all-fiber sensor network, which is based on the principle that a plurality of drill holes are arranged at the top and the slope of a geotechnical slope along the direction perpendicular to the potential sliding surface or joint surface and the bedrock surface, and an all-fiber comprehensive measuring tube is buried in each drill hole. The optical fibers are mutually welded to form an all-fiber sensing network which is connected to an optical fiber demodulator to measure the strain and temperature distribution of the optical fibers. And selecting a vertical strain characteristic value of the side slope on the basis of an early monitoring result, and obtaining the safety coefficient of the side slope by methods such as limit balance, finite element strength reduction and the like, so as to master the empirical relationship between the vertical strain characteristic value and the safety coefficient. Therefore, the technical scheme is a monitoring technology which can accurately identify the incubation, generation and development processes of the potential sliding surface of the side slope and the positions of the multi-stage potential sliding surfaces based on optical fiber monitoring data, and is also early warning by a single means.
In fact the factor that soil and rock mixture side slope stability receives the influence is more, probably comes from temperature, humidity, also can come from other factors such as internal stress, earthquake, consequently the utility model discloses solve the difficult problem of monitoring and early warning soil and rock mixture side slope stability under the complex condition.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of above-mentioned background art existence, the utility model provides a soil and stone mixture side slope stability monitoring and early warning system and model solves the problem that does not have comprehensive monitoring and early warning system among the prior art.
The technical method adopted by the utility model is as follows:
the technical principle of the slope stability monitoring and early warning of the soil-rock mixture is that a high-density resistivity method is used as a main body thought, the difference of the conductivity of the soil-rock mixture is used as a basis, direct current is supplied to the ground, a dot matrix type is adopted to lay electrodes, intensive sampling observation is conducted, the space distribution rule of an electric field in the underground under the action of a manual applied stabilized current field is researched, and then the electric property of underground media and structures is detected to analyze and solve the problem of the slope stability. The obtained parameter values are imaged through simulation software, a geological interpretation image of the measured geoelectrical profile is quickly and accurately given, and the effects of slope stability monitoring and early warning are achieved.
The utility model adopts the technical proposal that:
the utility model provides a soil and stone mixture side slope stability monitoring and early warning system comprises pressure variation monitoring subsystem, temperature and humidity variation monitoring subsystem and stability monitoring subsystem, its characterized in that:
the resistance strain type soil pressure cell in the pressure variation monitoring subsystem is connected with a resistance strain acquisition instrument through a cable, and the resistance strain acquisition instrument is in wired or wireless transmission with a computer;
temperature and humidity sensors in the temperature and humidity variable quantity monitoring subsystem are connected with a converter through cables, and the converter is in wired or wireless transmission with a computer;
and an electrode copper bar in the stability monitoring subsystem is connected with a direct current method instrument through a cable conductor and a cable clamp, and the direct current method instrument performs wireless data transmission with a computer through Bluetooth.
In more detail, the wireless transmission is one of GPRS, wifi or zigbee wireless transmission technologies.
More specifically, the resistance strain type soil pressure cell is a DMTY type resistance strain type soil pressure cell.
More specifically, the resistance strain acquisition instrument is a DM-YB1860 type resistance strain acquisition instrument.
More specifically, the temperature and humidity sensor is an SHT30 type temperature and humidity sensor.
More specifically, the direct current electrical method instrument is a WDA-1 type super digital direct current electrical method instrument.
A soil-rock mixture side slope stability monitoring and early warning model is characterized in that a plurality of resistance strain type soil pressure cells and temperature and humidity sensors are arranged around the center point of each layer of side slope platform at equal intervals; two measuring lines are respectively arranged in the east-west direction and the south-north direction of the slope top of the side slope, and electrode copper bars are arranged at equal intervals along each measuring line;
the resistance strain type soil pressure cell is connected with a resistance strain acquisition instrument through a cable, and the resistance strain acquisition instrument is in wired or wireless transmission with a computer;
the temperature and humidity sensor is connected with the converter through a cable, and the converter is in wired or wireless transmission with the computer;
the electrode copper bar is connected with the direct current method instrument through a cable conductor and a cable clamp, and the direct current method instrument performs wireless data transmission with a computer through Bluetooth.
More specifically, the distance between adjacent resistance strain type soil pressure cells is 1m to 2 m.
More specifically, the temperature and humidity sensor is characterized in that the arrangement distance between adjacent temperature and humidity sensors is 1.5m to 3 m.
More specifically, the spacing between the copper rods of the adjacent electrodes is 1 m.
Has the advantages that: the utility model discloses can provide a solution for soil-rock mixture side slope stability monitoring and early warning, can satisfy the engineering actual need, it is right to combine concrete implementation process below the utility model discloses a beneficial effect carries out furtherly explanation.
Drawings
Fig. 1 is the utility model discloses a soil-rock mixture side slope survey line lays the schematic diagram.
Fig. 2 is the utility model discloses a soil-rock mixture side slope structure schematic diagram.
Detailed Description
It is right to combine specific embodiment below the utility model the soil-rock mixture side slope stability monitoring and early warning system do further illustrate, but the utility model discloses a scope of protection is not limited to this.
Selecting soil-rock mixture side slopes in the road engineering under construction, selecting ladder-type excavation for the side slope excavation mode, and performing purposeful layout along each side slope platform for the side slope layout mode. The slope platform is sequentially provided with eight layers of one layer, two layers and … … layers from bottom to top. Generally, the final result obtained by excavating the slope platforms with more layers is more accurate.
The middle of each layer of slope platform is taken as a central point O, resistance strain type soil pressure boxes are uniformly distributed around the central point of the slope platform according to actual conditions, the recommended distribution distance is preferably 1 m-2 m, and the smaller the distance between the resistance strain type soil pressure boxes is, the more accurate the obtained final result can be. The wire outlet modes of the resistance strain type soil pressure cell comprise a side wire outlet mode and a bottom wire outlet mode, and one wire outlet mode can be selected at will. After the resistance strain type soil pressure cells are arranged, the resistance strain type soil pressure cells are buried inside the corresponding side slope platforms. Resistance strain formula soil pressure cell passes through the cable conductor and links to each other with resistance strain acquisition appearance, and resistance strain acquisition appearance can place in the outside edge of certain slope platform, carries out wired data transmission with the computer through the USB interface cable conductor that the instrument provided. The resistance strain acquisition instrument can also be placed in the slope soil body, and wireless data transmission is carried out through GPRS, wifi, zigbee and a computer. After the data are transmitted to the computer, the data processing and risk assessment are carried out through special software on the computer. Therefore, the monitoring system for the soil pressure variation of the integral soil-rock mixture slope is formed, and the monitoring system is provided with a monitoring and sensing system, a data transmission and processing management system and a later evaluation system.
The middle of each layer of slope platform is taken as a central point O, temperature and humidity sensors are uniformly distributed around the central point of the slope platform according to actual conditions, the recommended distribution interval is preferably 1.5-3 m, and the smaller the distribution interval of the temperature and humidity sensors is, the more accurate the obtained final result can be. In the discordance process, the layout of the resistance strain type soil pressure cell and the layout of the temperature and humidity sensor are not overlapped or too close to each other as far as possible, so that the resistance strain type soil pressure cell and the temperature and humidity sensor are not influenced with each other, and the final result of the resistance strain type soil pressure cell and the temperature and humidity sensor has errors. After the temperature and humidity sensors are arranged, the temperature and humidity sensors are buried in the corresponding side slope platforms. Temperature and humidity sensor passes through the cable conductor and links to each other with the converter, and the converter can be placed in the outside edge of certain slope platform, carries out wired data transmission with the computer through the USB interface cable conductor that the instrument provided. The converter also can be placed in the slope soil body, carries out wireless data transmission through wifi and computer. After the data are transmitted to the computer, the data are processed through a sensor configuration tool on the computer, and risk assessment is carried out through analysis software on the computer. Therefore, the integral soil-rock mixture slope temperature and humidity variation monitoring system with the monitoring sensing system, the data transmission and processing management system and the later-stage evaluation system is formed.
Two measuring lines are respectively arranged in the east-west direction and the south-north direction of the slope top of the side slope, the measuring lines from the east to the west are sequentially a measuring line I and a measuring line II, the measuring lines from the south to the north are sequentially a measuring line III and a measuring line IV, each measuring line is uniformly provided with electrode copper bars 1, and the recommended arrangement distance of the adjacent electrode copper bars is preferably 1 m. During arrangement, measuring points of the field electrode arrangement points are measured by a GPS measuring method of an RTK positioning technology (a real-time dynamic positioning technology and a carrier phase difference technology) to obtain coordinate and elevation information of the field measuring points, and three-dimensional terrain information is provided for later field monitoring data processing imaging. After the information of the arrangement of the electrode copper rods 1 is determined, punching the top and the periphery of the side slope by using a Luoyang shovel according to the arrangement scheme, and fixing the positions of the electrode copper rods after the bottom of the electrode copper rods is embedded into the holes. The electrode copper bar 1 is connected with the direct current electrical method instrument through a cable conductor and a cable clamp, and the joints on two sides are all subjected to insulation treatment so as to avoid inconsistent grounding conditions caused by electrode disturbance. When the direct current method instrument is adopted to collect field data, the + of the direct current method instrument host is connected with the positive electrode of the power supply, the negative electrode of the power supply, the infinite power supply electrode is connected with the B (∞), and the B power supply electrode is connected with the tripolar B. M is connected with the M electrode, and N is connected with the N electrode. A. B is a power supply electrode, and M, N is a measuring electrode. The wire measuring electrodes A, B, M, N are respectively connected with the 'A, B, M, N' wiring terminals of the main machine of the direct current electrical method instrument. The direct current method appearance is placed in the corner department of side slope bottom, carries out wireless data transmission through bluetooth and computer. After the data are transmitted to the computer, the data are converted and processed through conversion software WDAFC. Therefore, the integral soil-rock mixture slope stability monitoring system with the monitoring sensing system, the data transmission and processing management system and the later evaluation system is formed.
Depending on the field conditions, one or more of the above-described calculators may be used.
And carrying out numerical simulation on data acquired by the soil pressure variation monitoring subsystem, the temperature and humidity variation monitoring subsystem and the stability monitoring subsystem of the soil-rock mixture side slope, processing by adopting a resistivity tomography technology, and carrying out dynamic contrast analysis on the images by an image contrast algorithm so as to obtain the stability state of the on-site side slope.
And carrying out systematic series connection on the resistivity forward and backward image and the instability threshold value of the soil and stone mixture determined by experimental research under different conditions, and establishing a slope stability early warning system based on an image contrast algorithm.
After the electrode copper bars on the top and around the side slope are buried in the earth-rock mixture, the prepared saline water must be poured into the electrode within a certain range for wetting, so that the influence of the high resistance of the earth surface on the monitoring data is reduced, and the conductivity of the electrode copper bars is improved.
The same section ensures the same measuring line polar-running mode at different monitoring moments so as to ensure the contrast of the images of the same section at different monitoring moments.
The images at the same position are the same in size and uniform in pixel in dynamic contrast analysis.
Through the steps, a soil-rock mixture slope stability monitoring and early warning model is established, and the model relates to how to perform multilayer stepped excavation and layout and how to set a resistance strain type soil pressure cell, a temperature and humidity sensor and an electrode copper rod.
The following part briefly describes the composition of the soil-rock mixture slope stability monitoring and early warning system. The system needs materials including a resistance strain type soil pressure cell, a resistance strain acquisition instrument, a temperature and humidity sensor, a converter, a cable, an electrode copper bar, a cable clamp, a direct current electrical method instrument and a computer.
The soil and rock mixture side slope soil pressure variation monitoring subsystem is composed of a resistance strain type soil pressure box, a cable, a resistance strain acquisition instrument, a computer and the like. Resistance strain formula soil pressure cell passes through the cable conductor and links to each other with resistance strain acquisition instrument, and resistance strain acquisition instrument can carry out wired transmission through the USB interface cable conductor that the instrument provided and computer, also can carry out wireless transmission through GPRS, wifi, zigbee and computer.
The soil-rock mixture side slope temperature and humidity variation monitoring subsystem is composed of a temperature and humidity sensor, a cable, a converter, a computer and the like. Temperature and humidity sensor passes through the cable conductor and links to each other with the converter, and the converter can carry out wired transmission through the USB interface cable conductor that the instrument provided and computer, also can carry out wireless transmission through wifi and computer.
The soil-rock mixture side slope stability monitoring subsystem consists of an electrode copper bar, a cable conductor, a cable clamp, a direct current electrical method instrument, a computer and the like. The electrode copper bar is connected with the direct current method instrument through a cable and a cable clamp, and the direct current method instrument performs wireless data transmission with a computer through Bluetooth.
Resistance strain formula soil pressure cell 1 adopts DMTY type resistance strain formula soil pressure cell for monitor soil body inside soil pressure variation, the pressure cell adopts the full bridge circuit of meeting an emergency, the influence of elimination temperature and humidity change to the instrument that can be accurate.
The resistance strain acquisition instrument 2 adopts a DM-YB1860 type resistance strain acquisition instrument, is used for measuring the variation of physical parameters such as strain (stress), tension pressure, pressure intensity, torque, displacement, inclination angle, temperature and the like of a soil body, and can simultaneously acquire and display all data of 60 channels.
The temperature and humidity sensor 3 adopts an SHT30 type temperature and humidity sensor for monitoring the temperature and humidity variation inside the soil body, and adopts a polymer PE filter element, so that the waterproof and dust removal effects are achieved.
The direct current method instrument 8 adopts a WDA-1 type super digital direct current method instrument, is used for measuring voltage, current, apparent resistivity, natural potential, apparent polarizability, metal factor, half decay time, attenuation degree, excitation ratio, deviation degree and voltage attenuation curve, and has the characteristics of portability, flexibility, super-large power supply, super-wide range, super-high precision and the like.
Claims (10)
1. The utility model provides a soil and stone mixture side slope stability monitoring and early warning system comprises pressure variation monitoring subsystem, temperature and humidity variation monitoring subsystem and stability monitoring subsystem, its characterized in that:
the resistance strain type soil pressure cell in the pressure variation monitoring subsystem is connected with a resistance strain acquisition instrument through a cable, and the resistance strain acquisition instrument is in wired or wireless transmission with a computer;
temperature and humidity sensors in the temperature and humidity variable quantity monitoring subsystem are connected with a converter through cables, and the converter is in wired or wireless transmission with a computer;
and an electrode copper bar in the stability monitoring subsystem is connected with a direct current method instrument through a cable conductor and a cable clamp, and the direct current method instrument performs wireless data transmission with a computer through Bluetooth.
2. The soil-rock mixture slope stability monitoring and early warning system of claim 1, wherein the wireless transmission is one of GPRS, wifi or zigbee wireless transmission technologies.
3. The soil and rock mixture slope stability monitoring and early warning system of claim 1, wherein the resistance strain type soil pressure cell is a DMTY type resistance strain type soil pressure cell.
4. The soil-rock mixture slope stability monitoring and early warning system of claim 1, wherein the resistance strain acquisition instrument is a DM-YB1860 type resistance strain acquisition instrument.
5. The soil-rock mixture slope stability monitoring and early warning system of claim 1, wherein the temperature and humidity sensor is an SHT30 type temperature and humidity sensor.
6. The soil-rock mixture slope stability monitoring and early warning system of claim 1, wherein the direct current electrical method instrument is a WDA-1 type super digital direct current electrical method instrument.
7. A soil-rock mixture side slope stability monitoring and early warning model is characterized in that a plurality of resistance strain type soil pressure cells and temperature and humidity sensors are arranged around the center point of each layer of side slope platform at equal intervals; two measuring lines are respectively arranged in the east-west direction and the south-north direction of the slope top of the side slope, and electrode copper bars are arranged at equal intervals along each measuring line;
the resistance strain type soil pressure cell is connected with a resistance strain acquisition instrument through a cable, and the resistance strain acquisition instrument is in wired or wireless transmission with a computer;
the temperature and humidity sensor is connected with the converter through a cable, and the converter is in wired or wireless transmission with the computer;
the electrode copper bar is connected with the direct current method instrument through a cable conductor and a cable clamp, and the direct current method instrument performs wireless data transmission with a computer through Bluetooth.
8. The soil and rock mixture slope stability monitoring and early warning model of claim 7, wherein the distance between adjacent resistance strain type soil pressure cells is 1m to 2 m.
9. The soil-rock mixture slope stability monitoring and early warning model according to claim 7, wherein the distance between adjacent temperature and humidity sensors is 1.5m to 3 m.
10. The soil-rock mixture slope stability monitoring and early warning model according to claim 7, wherein the distance between adjacent electrode copper bars is 1 m.
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| CN202021524987.4U CN212904870U (en) | 2020-07-28 | 2020-07-28 | Soil-rock mixture slope stability monitoring and early warning system and model |
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| CN202021524987.4U CN212904870U (en) | 2020-07-28 | 2020-07-28 | Soil-rock mixture slope stability monitoring and early warning system and model |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418831A (en) * | 2021-06-30 | 2021-09-21 | 中国地质科学院水文地质环境地质研究所 | Resistivity tomography-based landslide revival simulation device and method |
| CN115992535A (en) * | 2023-02-17 | 2023-04-21 | 中国十七冶集团有限公司 | Deep foundation pit deformation and settlement alarm device |
-
2020
- 2020-07-28 CN CN202021524987.4U patent/CN212904870U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418831A (en) * | 2021-06-30 | 2021-09-21 | 中国地质科学院水文地质环境地质研究所 | Resistivity tomography-based landslide revival simulation device and method |
| CN115992535A (en) * | 2023-02-17 | 2023-04-21 | 中国十七冶集团有限公司 | Deep foundation pit deformation and settlement alarm device |
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