CN112627243A - Soil nailing wall quality and monitoring device and method for cavity behind wall - Google Patents
Soil nailing wall quality and monitoring device and method for cavity behind wall Download PDFInfo
- Publication number
- CN112627243A CN112627243A CN202011260535.4A CN202011260535A CN112627243A CN 112627243 A CN112627243 A CN 112627243A CN 202011260535 A CN202011260535 A CN 202011260535A CN 112627243 A CN112627243 A CN 112627243A
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- radar antenna
- soil nailing
- wall
- telescopic arm
- nailing wall
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a monitoring device and a method for soil nailing wall detection and wall rear cavity monitoring, which belong to the field of slope support exploration, can monitor and detect the quality and the condition of the inner side of a soil nailing wall, find problems in time, solve the problems and avoid accidents, and the device comprises a slide rail, a telescopic arm, a rotating part, a radar antenna and a pressure sensor, wherein the slide rail is arranged on the slope of the soil nailing wall, the slide rail is connected with the rotating part in a sliding manner, the rotating part is also connected with the telescopic arm, the rotating part can drive the telescopic arm to rotate, and the telescopic arm is detachably connected with the radar antenna; the radar antenna is used for measuring the end face of the soil nailing wall and is provided with a plurality of pressure sensors; the radar antenna is also connected with a radar host.
Description
Technical Field
The invention belongs to the field of slope support exploration, and particularly relates to a device and a method for monitoring the quality of a soil nailing wall and a cavity behind the wall.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the vigorous development of engineering construction in China, the foundation pit supporting technology is always the key content in the engineering construction. The common support forms mainly include: row pile supporting, underground continuous wall supporting, cement retaining wall, soil nailing wall (shotcrete supporting), reverse construction arch wall, undisturbed soil slope and the like; in the foundation pit supporting technology, the soil nailing wall supporting has the advantages of low economic cost, simple construction equipment, good flexibility and good effect, and is widely applied to the engineering of slope excavation. However, under the influence of various external factors, water and soil loss is easy to occur, so that the instability problem is caused, and the serious condition causes the foundation pit to collapse, so that the surrounding environment is influenced; at present, a monitoring system of a construction site is relatively perfect, and can basically prevent large-scale engineering disasters, but the inventor thinks that local water and soil loss can cause local cavities behind soil nailing walls, so that when heavy machinery such as an automobile pump, a truck crane, a crawler crane and the like works nearby, collapse of machine legs is very easy to occur, and the heavy machinery causes side turning of the machinery, so that immeasurable damage is caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for monitoring the quality of a soil nailing wall and a cavity behind the wall, which can monitor and detect the quality of the soil nailing wall and the condition of the inner side of the soil nailing wall, find problems in time, solve the problems and avoid accidents.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the technical scheme of the invention provides a monitoring device for soil nailing wall detection and wall rear cavity monitoring, which comprises a slide rail, a telescopic arm, a rotating part, a radar antenna and a pressure sensor, wherein the slide rail is arranged on a slope of a soil nailing wall, the slide rail is connected with the rotating part in a sliding manner, the rotating part is also connected with the telescopic arm, the rotating part can drive the telescopic arm to rotate, and the telescopic arm is detachably connected with the radar antenna; the radar antenna is used for measuring the end face of the soil nailing wall and is provided with a plurality of pressure sensors; the radar antenna is also connected with a radar host.
In a second aspect, the technical solution of the present invention further provides a method for monitoring the quality of a soil nailing wall and a cavity behind the wall thereof, wherein the device for monitoring the soil nailing wall and the cavity behind the wall is used, after the device is installed, the measuring end surface of the radar antenna is tightly attached to the surface of the soil nailing wall through the telescopic arm, and the rotating part moves along the track, so as to enlarge the detection area of the radar antenna.
The technical scheme of the invention has the following beneficial effects:
1) according to the invention, the geological radar is used for exploring the soil nailing wall quality and the cavity behind the soil nailing wall, the track and the telescopic arm are used for driving the radar antenna to realize large-area detection of the soil nailing wall, the cavity in the soil nailing wall can be found out in time, the repairing can be carried out in time, and the accident of heavy machinery during operation nearby the heavy machinery can be avoided.
2) According to the invention, the radar antenna and the telescopic arm are detachably connected, and the radar antenna can be stored when not in use, so that the radar antenna is prevented from being accidentally damaged.
3) According to the invention, the rotating mechanism is matched with the sliding rail, the telescopic arm is matched with the rotating mechanism, and in the detection process, various postures can be realized on the slope surface of the soil nail wall, so that the radar antenna is always attached to the slope surface of the soil nail wall, and the detection dead angle is avoided.
4) According to the invention, the end face of the radar antenna for measuring the soil nail wall is provided with the plurality of pressure sensors, so that the attitude of the radar antenna can be monitored through the sensors, and the detection coverage rate of the radar antenna is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Figure 1 is a schematic illustration of an installation of the present invention according to one or more embodiments,
figure 2 is a schematic diagram of the overall structure of the present invention according to one or more embodiments,
FIG. 3 is a schematic illustration of a pressure sensor installation of the present invention according to one or more embodiments.
In the figure: 1. domatic, 2, the track of soil nail wall, 3, except that the device of track, 31, sucking disc, 32, radar antenna, 33, flexible arm, 34, rotation portion, 35, base, 4, receiver, 5, pressure sensor, 6, the terminal surface that is used for measuring soil nail wall of radar antenna.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As introduced in the background art, the present invention provides a device and a method for monitoring the quality of a soil nailing wall and the cavity behind the wall thereof, which can monitor and detect the quality of the soil nailing wall and the condition of the inner side thereof, find out the problem in time, solve the problem and avoid the occurrence of accidents.
Example 1
In a typical embodiment of the present invention, as shown in fig. 1, the present embodiment discloses a monitoring device for soil nailing wall detection and wall rear cavity monitoring, which includes a telescopic arm 33, a slide rail 2, a rotating portion 34, a detachable connection mechanism, a driving mechanism, a radar antenna 32 and a pressure sensor 5, wherein the slide rail 2 is disposed on a side slope of the soil nailing wall, the slide rail 2 is horizontally disposed so as to facilitate transmission between the slide rail 2 and a component fitted to the slide rail 2, the slide rail 2 is connected to the rotating portion 34, the driving mechanism is disposed between the slide rail 2 and the rotating portion 34 so as to drive the rotating portion 34 to move along the slide rail 2, and the rotating portion 34 can rotate while moving along the slide rail 2; the rotating part 34 is further connected with a telescopic arm 33, the rotating part 34 can drive the telescopic arm 33 to rotate by taking the central axis of the rotating part 34 as a shaft, the telescopic arm 33 is connected with a detachable connecting mechanism, and the detachable connecting mechanism is connected with the radar antenna 32; the radar antenna 32 is mounted with a plurality of pressure sensors 5.
The driving mechanism comprises a motor and a roller, the motor is connected with and drives the roller, and the side surface of the roller is directly contacted with the sliding rail 2. It is understood that, in the prior art, the motor is usually built in the roller, and the motor shaft is kept coaxial with the roller shaft, but this driving mechanism can be adopted in the present embodiment, and the rotating shaft of the driving mechanism is connected to the rotating part 34.
The rotating part 34 comprises a base 35, a first rotating part and a second rotating part, the base plate is fixedly connected with the first rotating part, the first rotating part is hinged with the second rotating part, and the second rotating part can rotate; the first rotating piece and the second rotating piece are both cylindrical and coaxial; the second rotating part is connected with a rotating power source, the rotating power source is arranged in the first rotating part, and when the rotating power source adopts a motor, a motor shaft of the rotating power source is connected to the central shaft of the second rotating part so as to drive the second rotating part to rotate; a slewing bearing is arranged between the first and the second revolving member, the first revolving member being connected to one revolving part 34 of the slewing bearing, the second revolving member being connected to the other revolving part 34 of the slewing bearing.
The radar antenna 32 is connected with the geological radar host, and a data line and a power line between the radar antenna 32 and the geological radar host are arranged in the slide rail 2.
The slide rail 2 and the soil nailing wall in the embodiment are detachably connected and are installed immediately after the construction of the soil nailing wall. In another embodiment, the slide rail 2 is non-detachably connected to the soil nailing wall, and is installed immediately after the construction of the soil nailing wall.
The telescopic arm 33 includes a plurality of segments, as shown in fig. 2, including a first arm segment in an L shape, a second arm segment hinged to the end of the first arm segment, a telescopic rod hinged to the end of the second arm segment, and a detachable connecting mechanism hinged to the telescopic rod.
In this embodiment, the telescopic arm 33 is a hydraulic telescopic arm 33.
The antenna detachable connecting mechanism comprises a suction cup 31, wherein the suction cup 31 is used for adsorbing a radar antenna 32, and the angle is adjustable. It can be understood that between first arm festival and the second arm festival, between second arm festival and the telescopic link, between telescopic link and dismantlement formula coupling mechanism, all be equipped with reduction gear and motor, the reduction gear is connected to the motor, the tip of the arm festival of retarder connection to realize rotation and static between the arm festival, its principle is unanimous with current industrial robot.
The radar antenna 32 is rectangular, and in the present embodiment, four pressure sensors 5 are provided, and the four pressure sensors 5 are located at four corners of the radar antenna 32. The pressure sensor 5 mainly determines whether the radar antenna 32 is in close contact with the soil nail wall, and therefore the outer surface of the radar antenna 32 is flush with the end surface for measurement in the outer surface of the pressure sensor 5.
In order to mount the pressure sensor 5, mounts are mounted at the four corners of the radar antenna 32 for placing the pressure sensor 5.
In this embodiment, the device further comprises a controller, and the controller is connected to the driving mechanism, the rotating part 34 and the telescopic arm 33 to control the movement of the above components. The data transmission mode of the controller is wireless transmission.
In this embodiment, since the radar antenna 32 and the geological radar host are connected by a wire, in order to control the length of the cable, a cable winch is further provided in this embodiment to wind the cable.
And the storage box 4 is used for storing the geological radar host, the cable winch and the radar antenna 32.
It can be understood that, in the present embodiment, since the detachable connection mechanism is used to clamp the radar antenna 32, the radar antenna 32 is detachably connected to the detachable connection mechanism, and the radar can be detached from the detachable connection mechanism when not in use.
In addition, in this embodiment, the radar antenna 32 may be a flexible antenna or an antenna made of a memory alloy material, so as to be accommodated conveniently.
The detachable connection, such as bolt connection, threaded connection or clamping connection, and the non-detachable connection, such as welding, gluing, etc., can be selected according to actual needs.
It should be understood that the steering mechanism is of an up-down configuration, and is used as an up-down orientation reference frame in the present invention.
Example 2
The embodiment provides an auxiliary method for detecting the quality of a soil nailing wall, which uses the monitoring device for detecting the soil nailing wall and monitoring the cavity behind the wall as shown in embodiment 1, and comprises the following steps:
1) setting a monitoring and detecting axis of the geological radar, and completing the debugging work of the geological radar;
2) positioning parts of the sliding rail 2 are pre-embedded during the construction of the soil nailing wall, and the position where the radar antenna 32 passes is wiped after the construction, so that the flatness and the smoothness are ensured;
3) after the soil nailing wall has certain strength, the lapping and installation of the slide rail 2 and other parts are started;
4) after the device shown in the embodiment 1 is installed, the construction quality of the soil nailing wall can be detected, and a worker remotely controls the machine to be started through the control module;
5) the driving mechanism drives the telescopic hydraulic rod to place the radar antenna 32, and in the process, the radar antenna 32 needs to be ensured to be in close contact with the surface of the soil nailing wall, namely the pressure of four corners of the radar antenna 32 is the same;
6) after the radar antenna 32 is determined to be in close contact with the surface of the soil nailing wall, the geological radar starts to work, the driving mechanism drives the radar antenna 32 to start to slowly move along the direction of the sliding rail 2, and in the embodiment, the moving speed of the driving mechanism is set to be 5 km/h;
7) the geological radar host receives the data and then submits the data to a background for analysis, and a report is issued;
8) the detection work completion assisting device is returned to the storage box 4 in addition to the slide rail 2.
The working principle of the geological radar in the embodiment belongs to the prior art, and is not described herein again.
Example 3
The embodiment provides an auxiliary method for detecting the quality of a soil nailing wall, which uses the monitoring device for detecting the soil nailing wall and monitoring the cavity behind the wall as shown in the embodiment 1, and the steps of the embodiment are the same as those of the embodiment 2; the difference between this embodiment and embodiment 2 is that this embodiment is used for daily monitoring after the construction of the soil nailing wall. The interval time is determined according to the requirements, and when rainstorm occurs and water leaks, the monitoring frequency is encrypted; when heavy machinery is constructed near a certain section of slope, the monitoring frequency is encrypted; the whole device is safe to operate, does not need an operator to lift for scanning, and a series of operations in the embodiment can be completed on the ground, so that the safety of equipment and personnel is ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A monitoring device for soil nailing wall detection and wall rear cavity monitoring is characterized by comprising a slide rail, a telescopic arm, a rotating part, a radar antenna and a pressure sensor, wherein the slide rail is arranged on a slope of a soil nailing wall, the slide rail is connected with the rotating part in a sliding manner, the rotating part is also connected with the telescopic arm, the rotating part can drive the telescopic arm to rotate, and the telescopic arm is detachably connected with the radar antenna; the radar antenna is used for measuring the end face of the soil nailing wall and is provided with a plurality of pressure sensors; the radar antenna is also connected with a radar host.
2. The apparatus of claim 1, wherein the telescopic arm is connected at its end to a suction cup, the suction cup being connected to the radar antenna.
3. The apparatus according to claim 1, wherein the rotation part comprises a base, a first rotation part and a second rotation part, the first rotation part is fixedly connected to the base, the second rotation part is hinged to the first rotation part, and the second rotation part can rotate.
4. The apparatus according to claim 3, wherein the track is slidably connected to the base, and the base is provided with a groove capable of engaging with the track.
5. The apparatus according to claim 1, wherein the telescopic arm comprises a plurality of arm sections connected in series, and the arm section at the end of the telescopic arm is a telescopic rod.
6. The apparatus according to claim 1, wherein the radar antenna is rectangular, and the plurality of pressure sensors are mounted at four corners of the radar antenna; the outer surface of the radar antenna is flush with the end surface for measurement in the outer surface of the pressure sensor.
7. The apparatus of claim 1, further comprising a storage case connected to the rotating portion for receiving a radar antenna.
8. The apparatus of claim 1, further comprising a controller coupled to the rotatable portion and the telescoping arm.
9. A soil nailing wall quality and wall rear cavity monitoring method, characterized in that the monitoring device for soil nailing wall detection and wall rear cavity monitoring as claimed in any one of claims 1-8 is used, after the device is installed, a measuring end face of the radar antenna is tightly attached to the surface of the soil nailing wall through a telescopic arm, and a rotating part moves along a track so as to enlarge the detection area of the radar antenna.
10. The method for monitoring the quality of the soil nailing wall and the cavity behind the soil nailing wall as claimed in claim 9, wherein when the measuring end surface of the radar antenna is tightly attached to the surface of the soil nailing wall through the telescopic arm, the readings of a plurality of pressure sensors on the radar antenna are received in real time, and when the readings of the plurality of pressure sensors are within a set interval or are the same, the posture of the telescopic arm is maintained until the measurement is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260535.4A CN112627243A (en) | 2020-11-12 | 2020-11-12 | Soil nailing wall quality and monitoring device and method for cavity behind wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011260535.4A CN112627243A (en) | 2020-11-12 | 2020-11-12 | Soil nailing wall quality and monitoring device and method for cavity behind wall |
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| CN112627243A true CN112627243A (en) | 2021-04-09 |
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| CN202011260535.4A Pending CN112627243A (en) | 2020-11-12 | 2020-11-12 | Soil nailing wall quality and monitoring device and method for cavity behind wall |
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| CN111736170A (en) * | 2020-07-24 | 2020-10-02 | 杭州都市高速公路有限公司 | Device and method for monitoring cutting slope deformation degree |
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| CN201707453U (en) * | 2010-04-02 | 2011-01-12 | 云南省建筑科学研究院 | Auxiliary device for radar nondestructive detection used in wall of tunnel |
| CN204702313U (en) * | 2015-05-21 | 2015-10-14 | 北京交通大学 | A kind of geological radar antenna rail draw gear for slope test |
| WO2018096190A1 (en) * | 2016-11-24 | 2018-05-31 | Sgs Española De Control, S.A. | Device for measuring the draft of a ship by radar |
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