CN203704901U - Multi-channel large-deformation landslide displacement automatic monitoring device - Google Patents

Abstract

A multi-channel large-deformation landslide automatic displacement monitoring device, including a steel wire rope used to connect with the anchor bolt, the steel wire rope is connected with the displacement monitoring device, the structure of the displacement monitoring device is: after the steel wire rope passes through the displacement measurement unit and the steel wire rope tension The displacement measuring unit is connected with the mechanical measuring sensor and/or the electronic measuring sensor; in the steel wire rope tensioning device, the steel wire rope is wound on the roller, the roller shaft is supported on the bearing seat, and the roller The shaft is also connected with the inner ring of the helical leaf spring, and the outer ring of the helical leaf spring cooperates with the fixed ring gear which is fixedly installed. The utility model improves the monitoring accuracy through the provided steel wire rope tensioning device, and realizes a large range of monitoring, and can fully monitor the landslide data in three stages.

Description

A multi-channel automatic monitoring device for large deformation landslide displacement

technical field

The utility model relates to the field of landslide displacement monitoring, in particular to a multi-channel large deformation automatic monitoring device for landslide displacement.

Background technique

Slopes can be seen everywhere in mountainous areas. Due to the different geological conditions in the area, some slopes have slip zones between the upper surface and the lower substrate. These slip zones are usually within the range of tens of meters in depth. With the continuous change of geological conditions, the upper and lower substrates of the slip zone will move relative to each other, that is, slip occurs. The speed of slippage has a great relationship with the geological conditions of the area. Usually, the slippage will be divided into three stages: the first stage is in the slip initiation stage, and a slip zone will be formed in this stage; the second stage, The relative position of the slip zone changes very slowly, and the slip zone is in the stable slow slip stage; the third stage is the unstable slip stage, in which the slip speed will gradually increase, and eventually a landslide will occur. Geological disaster. Therefore, how to monitor the displacement of the landslide slip belt in real time is of great significance to prevent catastrophic accidents such as dam breaks, landslides in mountainous areas, subsidence of highways and railway subgrades, and to take preventive measures in advance.

The landslide displacement measuring instrument currently used has a small measurement range, so when the landslide is still in the stable sliding stage, the measuring instrument has exceeded the measurement range, and subsequent monitoring cannot be used, especially for the third stage of the landslide displacement. monitor. Therefore, it is difficult to predict the occurrence of landslides, and this measuring instrument can only measure the displacement of one point. In practical applications, many geological conditions have more than one slip zone. In this case, it cannot be used at all.

Moreover, the maintenance and data collection of existing measuring instruments are also relatively troublesome. For example, batteries need to be charged regularly, and data collection needs to be collected on-site, so it is impossible to collect data in real time.

Contents of the invention

The technical problem to be solved by the utility model is to provide a multi-channel large-deformation automatic monitoring device for landslide displacement, which can realize large-range landslide displacement monitoring, and the device maintenance and data collection are convenient.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a multi-channel large-deformation landslide displacement automatic monitoring device, including a steel wire rope used to connect with the anchor bolt, the steel wire rope is connected with the displacement monitoring device, and the displacement monitoring The structure of the device is:

The wire rope is connected to the wire rope tensioning device after passing through the displacement measurement unit, and the displacement measurement unit is connected to a mechanical measurement sensor and/or an electronic measurement sensor;

In the above steel wire rope tensioning device, the steel wire rope is wound on the roller, the roller shaft is supported on the bearing seat, and the roller shaft is also connected with the inner ring of the helical leaf spring, and the outer ring of the helical leaf spring is connected with the fixed gear ring fixedly installed. Cooperate.

Preferably, the inner wall of the fixed ring gear is provided with a plurality of circular arc grooves uniformly distributed along the circumference, and the end of the outer ring of the spiral leaf spring is provided with a cylindrical end placed in the circular arc grooves.

Further preferably, a curved portion is further provided between the outer ring of the helical leaf spring and the cylindrical end.

Preferably, there are multiple wire ropes, and accordingly there are multiple sets of displacement measurement units and wire rope tensioning devices.

Preferably, the electronic measuring sensor is connected with the data processing unit, and the data processing unit is connected with the wireless sending unit.

Preferably, a solar battery panel is also provided, and the solar battery panel is connected to a battery, and the battery supplies power to the displacement monitoring device.

A method for automatically monitoring the displacement of a multi-channel large-deformation landslide by using the above-mentioned device, comprising the following steps:

1. Determine the position of the slip zone through geological exploration, excavate a wellbore that passes through the slip zone vertically, and set multiple anchor bolts in the wellbore from top to bottom;

2. One end of the wire rope is connected to the anchor bolt, and the other end of the wire rope is connected to the displacement monitoring device;

3. Tension the wire rope through the wire rope tensioning device in the displacement monitoring device, and then start to enter the displacement monitoring;

Among them, the mechanical measuring sensor is used for on-site inspection and reading;

After the data obtained by the electronic measuring sensor is processed by the data processing unit, it is transmitted by the wireless transmission unit according to the corresponding equipment group number for remote reception;

Through the above steps, the automatic monitoring of the displacement of the multi-channel large deformation landslide is realized.

At least one of the anchor bolts is located below the slip belt.

Preferably, the part of the wire rope located in the shaft is sheathed with a plastic pipe.

The utility model provides a multi-channel large-deformation automatic monitoring device for landslide displacement. Through the provided wire rope tensioning device, the monitoring accuracy is improved, and a large range of monitoring is realized, which can completely monitor the landslide data in three stages. ; The mechanical measurement sensor is set to facilitate on-site inspectors to read data in real time; the set wireless transmission unit is convenient for remote data collection and improves safety; the set solar panel can reduce the maintenance times of the device.

The utility model provides an automatic monitoring method for the displacement of a multi-channel large-deformation landslide, which can realize the monitoring of relative displacements occurring at different slip zone positions, and has a large measuring range and high precision. The device is easy to maintain, the data can be collected on site and remotely, and it is easy to use.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural diagram of the displacement monitoring device of the present invention.

Fig. 3 is a side view of the wire rope tensioning device in the utility model.

Fig. 4 is a schematic diagram of the support structure of the roller in the utility model, and only half of the symmetrical structure is drawn in the figure.

In the figure: displacement monitoring device 1, wireless transmission unit 11, wire rope tensioning device 12, roller 121, fixed ring gear 122, spiral leaf spring 123, bearing seat 124, roller shaft 125, cylindrical end 126, and bending part 127 , data processing unit 13 , mechanical measurement sensor 14 , displacement measurement unit 15 , electronic measurement sensor 16 , shaft 2 , steel wire rope 3 , anchor bolt 4 , solar panel 5 , battery 6 .

Detailed ways

Example 1:

As shown in Figures 1 to 4, a multi-channel large-deformation landslide displacement automatic monitoring device includes a steel wire rope 3 for connecting with the anchor bolt 4, and the steel wire rope 3 is connected with the displacement monitoring device 1, and the structure of the displacement monitoring device 1 is as follows: :

Wire rope 3 is connected with wire rope tensioning device 12 after passing through displacement measuring unit 15, and displacement measuring unit 15 is connected with mechanical measuring sensor 14 and/or electronic measuring sensor 16; set mechanical measuring sensor 14 and The electronic measurement sensor 16 can realize on-site reading and remote acquisition at the same time, which improves the adaptability of the device. , can realize remote data collection to improve security. The utility model adopts a connection structure in which the displacement measuring unit 15 is followed by the steel wire rope tensioning device 12, so that the steel wire rope 3 first drives the shaft rotation of the displacement measuring unit 15, and then enters the roller 121, so the displacement will not be affected. The measurement accuracy of the measurement unit 15, correspondingly, the measurement accuracy of the displacement measurement unit 15 is also improved due to the tensioning of the steel wire rope by the wire rope tensioning device 12, especially in the state of sliding back, the device of the present invention still The relevant data can be accurately measured.

As shown in Figures 2 to 4, in the steel wire rope tensioning device 12 described above, the steel wire rope 3 is wound on the roller 121, the roller shaft 125 is supported on the bearing seat 124, and the roller shaft 125 is also connected with the inner ring of the helical leaf spring 123, The outer ring of the helical leaf spring 123 cooperates with the fixed ring gear 122 which is fixedly installed. The set helical leaf spring 123 can keep the roller 121 in a tensioned state all the time. Even if the slip occurs in the return state, the helical leaf spring 123 can also tighten the steel wire rope 3, so that the electronic measuring sensor 16 can also keep the state Record and send. When the slippage exceeds the compression limit of the helical leaf spring 123, the outer ring of the helical leaf spring 123 will jump tooth by tooth on the inner wall of the fixed ring gear 122, so that the roller 121 is always in a tensioned state and will not affect The measuring range of steel wire rope 3.

Preferably, the inner wall of the fixed ring gear 122 is provided with a plurality of circular arc grooves uniformly distributed along the circumference, and the end of the outer ring of the spiral leaf spring 123 is provided with a cylindrical end 126 placed in the circular arc grooves. With this structure, when the cylindrical end 126 jumps along the arc groove of the fixed ring gear 122, it is smoother.

Further preferably, a curved portion 127 is further provided between the outer ring of the helical leaf spring 123 and the cylindrical end 126 . With this structure, the cylindrical end 126 of the helical leaf spring 123 is smooth when jumping clockwise and counterclockwise. It will not affect the measurement of the displacement measurement unit 15 .

Preferably, there are multiple steel wire ropes 3 , and accordingly there are multiple sets of displacement measurement units 15 and steel wire rope tensioning devices 12 . With this structure, the displacement of measurement points at different depths can be monitored, and the relative displacement between each point can be obtained.

Preferably, the electronic measurement sensor 16 is connected to the data processing unit 13 , and the data processing unit 13 is connected to the wireless sending unit 11 . With this structure, it is convenient to realize remote acquisition, wherein the data processing unit 13 converts the displacement time and displacement value of the electronic measuring sensor 16 into a digital signal, and links it with the equipment group number, which belongs to the equipment commonly used in the prior art, and will not be repeated here repeat.

Preferably, a solar cell panel 5 is also provided, and the solar cell panel 5 is connected to a storage battery 6 , and the storage battery 6 supplies power to the displacement monitoring device 1 . Preferably, the solar cell panel 5 is arranged above the displacement monitoring device 1, in addition to supplying power, it can also play a role of rain protection. According to different places and the number of cloudy days, different battery capacity can be selected.

Example 2:

On the basis of embodiment 1, as in Fig. 1, a kind of method that adopts above-mentioned device to carry out multi-channel large deformation landslide displacement automatic monitoring comprises the following steps:

1. Determine the position of the slip zone through geological exploration, excavate the wellbore 2 that passes through the slip zone vertically, and set multiple anchor bolts 4 in the wellbore 2 from top to bottom;

2. One end of the wire rope 3 is connected to the anchor bolt 4, and the other end of the wire rope 3 is connected to the displacement monitoring device 1;

3. The steel wire rope 3 is tensioned by the steel wire rope tensioning device 12 in the displacement monitoring device 1, and the displacement monitoring can be started;

Among them, the mechanical measurement sensor 14 is used for on-site patrol readings; when the power supply fails and cannot supply power normally, the measurement data of the mechanical measurement sensor 14 does not need to use electricity, and the patrol monitoring personnel will go to the measurement location site and directly read all the data. Measure the displacement value.

After the data obtained by the electronic measuring sensor 16 is processed by the data processing unit 13, the displacement of the steel wire rope 3 is displayed and stored. This storage unit is cyclically updated, and the recorded content is the time and the displacement of the measurement point, according to the corresponding equipment group number Transmitted by the wireless sending unit 11 for remote reception for subsequent data processing;

The displacement of the sliding belt at the point to be measured can be obtained by subtracting the displacement of the steel wire rope at the deep measuring point from the displacement of the immediately upper measuring point. The displacement is the total deep displacement.

Through the above steps, the automatic monitoring of the displacement of the multi-channel large deformation landslide is realized.

Preferably, at least one of the anchor bolts 4 is located below the slip belt.

Preferably, the part of the wire rope 3 located in the shaft 2 is covered with a plastic tube. The length of the wire rope depends on the depth of the well and the measurement range. The wire rope placed underground is protected by an engineering plastic tube. This structure prevents the measurement error caused by the wire rope embedded in the inner wall of the test hole during the sliding process.

Claims (6)

1. A multi-channel large-deformation automatic monitoring device for landslide displacement, including a steel wire rope (3) used to connect with the anchor bolt (4), and the steel wire rope (3) is connected to the displacement monitoring device (1), characterized in that: The structure of the displacement monitoring device (1) is: The wire rope (3) is connected to the wire rope tensioning device (12) after passing through the displacement measurement unit (15), and the displacement measurement unit (15) is connected to the mechanical measurement sensor (14) and/or the electronic measurement sensor (16 )connect; In the steel wire rope tensioning device (12), the steel wire rope (3) is wound on the roller (121), the roller shaft (125) is supported on the bearing seat (124), and the roller shaft (125) is also connected with the spiral leaf spring The inner ring of (123) is connected, and the outer ring of helical leaf spring (123) cooperates with the fixed ring gear (122) of fixed installation. 2. A multi-channel large-deformation landslide automatic displacement monitoring device according to claim 1, characterized in that: the inner wall of the fixed ring gear (122) is provided with a plurality of arc grooves uniformly distributed along the circumference, and the spiral plate The end of the outer ring of the spring (123) is provided with a cylindrical end (126) placed in the arc groove. 3. A multi-channel large-deformation automatic monitoring device for landslide displacement according to claim 2, characterized in that: there is also a bending part between the outer ring of the spiral leaf spring (123) and the cylindrical end (126) (127). 4. A multi-channel large-deformation landslide automatic displacement monitoring device according to claim 1, characterized in that: the steel wire rope (3) is multiple, and the displacement measurement unit (15) and the wire rope tensioning device are correspondingly (12) is also multi-group. 5. A multi-channel large-deformation landslide automatic displacement monitoring device according to claim 1, characterized in that: the electronic measurement sensor (16) is connected to the data processing unit (13), and the data processing unit (13) is connected to the wireless The sending unit (11) is connected. 6. A multi-channel large-deformation landslide automatic displacement monitoring device according to claim 1, characterized in that: a solar panel (5) is also provided, the solar panel (5) is connected to the battery (6), and the battery ( 6) Supply power to the displacement monitoring device (1).