CN112344904A - System and method for monitoring earth volume of deep foundation pit excavation - Google Patents
System and method for monitoring earth volume of deep foundation pit excavation Download PDFInfo
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- CN112344904A CN112344904A CN202011121603.9A CN202011121603A CN112344904A CN 112344904 A CN112344904 A CN 112344904A CN 202011121603 A CN202011121603 A CN 202011121603A CN 112344904 A CN112344904 A CN 112344904A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
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Abstract
The invention relates to a monitoring system and a method for the excavated volume of earth of a deep foundation pit, wherein the system comprises a detection unit, a guide rail servo motion unit and a data processing unit, the guide rail servo motion unit is connected with the detection unit, the detection unit is connected with the data processing unit, the detection unit is used for collecting point cloud data of any position of the deep foundation pit, the guide rail servo motion unit is a carrier of the detection unit, the detection unit moves along a support system frame of the deep foundation pit, and the data processing unit calculates the excavated volume of earth and excavation allowance in the deep foundation pit by constructing a digital elevation model according to the point cloud data collected by the detection unit. Compared with the prior art, the method can comprehensively acquire the point cloud data of any position in the deep foundation pit in real time, and accurately acquire the excavation earth volume conditions of different partitions in the deep foundation pit in real time through the modes of reconstructing a digital elevation model and logical operation.
Description
Technical Field
The invention relates to the technical field of deep foundation pit engineering, in particular to a system and a method for monitoring earth volume of deep foundation pit excavation.
Background
The requirements of high-rise buildings and projects of crossing mountains and crossing rivers on deep foundation pit engineering technology are increasing day by day. The foundation pit engineering is a science of mutual intersection of geological rock and soil, structures and construction, is influenced by various complex factors, has certain risk, and particularly is deep foundation pit engineering with large depth, and the excavation process of the foundation pit engineering is a necessary premise for engineering success.
Because the deep foundation pit engineering has the characteristics of being long, large and deep, a partition and layered excavation mode is generally adopted, but the excavated earth volume and the unearthed parts of each different region at present are difficult to master in the construction process, so that the vehicles for transporting the earth can not be accurately allocated in time, the corresponding supporting structure can not be constructed in time when the corresponding design height is constructed, the problems of distribution and waste of human-machine resources are easily caused, and the problems of potential safety hazards and overtime construction period also exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a system and a method for monitoring the excavated earth volume of a deep foundation pit, so that the excavated earth volume of the deep foundation pit can be accurately acquired in real time, and the intellectualization and the orderliness of construction can be ensured.
The purpose of the invention can be realized by the following technical scheme: the utility model provides a monitoring system of deep basal pit excavation earthwork volume, includes detection unit, guide rail servo motion unit and data processing unit, guide rail servo motion unit is connected with the detection unit, the detection unit is connected to the data processing unit, the detection unit is used for gathering the point cloud data of deep basal pit optional position, guide rail servo motion unit specifically is the carrier of detection unit, makes the detection unit remove along deep basal pit braced system frame, data processing unit is according to the point cloud data that the detection unit gathered, through constructing digital elevation model, calculates and obtains excavation earthwork volume and excavation allowance in the deep basal pit.
Furthermore, the detection unit comprises a laser radar transmitter, an optical receiver, a processing chip and a wireless transmitting device, wherein the processing chip is respectively connected with the laser radar transmitter, the optical receiver and the wireless transmitting device, the laser radar transmitter is used for transmitting LD pulse laser signals to the interior of the deep foundation pit, the optical receiver is used for receiving echo signals reflected by the soil body in the deep foundation pit, the processing chip is used for controlling the working states of the laser radar transmitter and the optical receiver and processing the echo signals into point cloud data, and the wireless transmitting device is used for transmitting the point cloud data to the data processing unit.
Further, the guide rail servo motion unit comprises a carrier holder, a guide rail, a walking control device and a power module, the carrier holder is installed at the bottom of the laser radar transmitter, the walking device is arranged at the bottom of the carrier holder, the walking device is installed on the guide rail, the guide rail is laid on the deep foundation pit supporting system framework, the walking device is respectively connected with the walking control device and the power module, the walking control device controls the walking device to move according to a set walking route, and the power module provides electric energy for the walking device.
Further, the carrier cloud platform is installed in the bottom of laser radar transmitter through the revolving stage for the laser radar transmitter can take place angle rotation on the carrier cloud platform.
Further, the guide rail is of a groove-shaped structure.
Furthermore, the data processing unit comprises an information receiving device and a data center server, the information receiving device is used for receiving point cloud data from the wireless transmitting device, the data center server constructs a corresponding digital elevation model according to the point cloud data, and the excavated earth volume and the excavation allowance of each partition in the deep foundation pit are calculated and obtained on the basis of the digital elevation model and the preset excavated earth volume of the deep foundation pit.
Furthermore, the data center server is connected with a user side to transmit the excavated earth volume and excavation allowance data of each partition in the deep foundation pit to the user side.
A method for monitoring the excavated earth volume of a deep foundation pit comprises the following steps:
s1, according to the set walking route, the guide rail servo motion unit is used as a carrier of the detection unit, so that the detection unit moves along the deep foundation pit supporting system frame;
s2, in the moving process of the detection unit, sequentially collecting point cloud data of different positions of the deep foundation pit by the detection unit according to preset data sampling interval time, and transmitting the collected point cloud data to the data processing unit in real time until the detection unit moves to the end point of the walking route;
and S3, the data processing unit constructs a corresponding digital elevation model in real time according to the point cloud data received in real time, and calculates and obtains the excavated earth volume and the excavation allowance of each partition in the current deep foundation pit by combining the preset excavated earth volume of the deep foundation pit.
Further, the step S3 specifically includes the following steps:
s31, the data processing unit constructs a corresponding digital elevation model according to all the currently received point cloud data;
s32, calculating the excavated earth volume of each partition in the deep foundation pit by adopting a logical operation mode based on the constructed digital elevation model grid diagram;
and S33, calculating to obtain the excavation allowance of each partition in the deep foundation pit according to the excavated earth volume of each partition in the deep foundation pit and the preset earth volume to be excavated in the deep foundation pit.
Further, the logic operation process in step S32 specifically includes: and determining the fluctuation state of each grid in the deep foundation pit by using the data after spatial interpolation on the grids, respectively calculating the volume difference of each grid, and summing the volume differences corresponding to the grids forming the subareas according to the grid composition of each subarea in the deep foundation pit to obtain the excavated earth volume of the subarea.
Compared with the prior art, the invention has the following advantages:
the method comprises the steps of setting a detection unit, a guide rail servo motion unit and a data processing unit, driving the detection unit to move along a support system framework of the deep foundation pit by using the guide rail servo motion unit, enabling the detection unit to acquire point cloud data of different positions in the deep foundation pit, constructing a digital elevation model by using the data processing unit, and calculating to obtain excavated earth volume and excavation allowance of each partition in the deep foundation pit, so that the aim of accurately acquiring the excavated earth volume of the deep foundation pit is fulfilled, a user can accurately master the excavated earth volume and unearthed parts of each partition in the deep foundation pit in real time, and follow-up timely and accurate construction scheduling is facilitated.
Secondly, a grid graph of the digital elevation model is constructed based on the point cloud data, and the excavated earth volume of the partition formed by the grids can be obtained by solving the volume difference of each grid, so that the rapidness and the accuracy of monitoring the excavated earth volume of the deep foundation pit are ensured, and the automation degree of monitoring is improved.
In addition, the guide rail is laid on a deep foundation pit supporting system frame, and the laser radar transmitter and the carrier holder are connected through the rotary table, so that the laser radar transmitter can transmit signals at multiple angles, the detection comprehensiveness is improved, the reliability of a subsequent deep foundation pit digital elevation model is improved, and the accuracy of monitoring the excavation earth volume of the deep foundation pit is ensured.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic flow diagram of the process of the present invention;
the notation in the figure is: 1. laser radar transmitter, 2, optical receiver, 3, processing chip, 4, revolving stage, 5, wireless transmitting device, 6, carrier cloud platform, 7, guide rail, 8, deep basal pit support system, 9, walking controlling means, 10, information receiving device, 11, data center server, 12, user side, 13, power module, 14, running gear.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
The utility model provides a monitoring system of deep basal pit excavation earthwork volume, including the detecting element, guide rail servo motion unit and data processing unit, wherein, guide rail servo motion unit and detecting element are connected, the detecting element is connected to data processing unit, the detecting element is used for gathering the point cloud data of deep basal pit optional position, guide rail servo motion unit is as the carrier of detecting element, can make the detecting element move along the 8 frames of deep basal pit braced system, data processing unit then according to the point cloud data that the detecting element gathered, through constructing digital elevation model, calculate and obtain excavation earthwork volume and excavation allowance in the deep basal pit.
Specifically, as shown in fig. 1, the detection unit includes a laser radar transmitter 1, a light receiver 2, a processing chip 3 and a wireless transmitting device 5, wherein the laser radar transmitter 1 sends an LD pulse laser signal through a power driving circuit and then emits the LD pulse laser signal to the inside of the deep foundation pit through a lens, so as to transmit the laser signal for positioning and ranging; the optical receiver 2 is used for receiving echo signals of pulse laser reflected by soil in the deep foundation pit; the processing chip 3 is used for controlling the working states of the laser radar transmitter 1 and the optical receiver 2 (by setting a data acquisition time interval, the laser radar transmitter 1 is controlled to send out a laser signal, and the optical receiver 2 is controlled to receive an echo signal), and processing the echo signal into point cloud data.
The guide rail servo motion unit comprises a carrier cloud platform 6, a guide rail 7, a walking control device 9, a power supply module 13 and a walking device 14, wherein the carrier cloud platform 6 is a carrier for fixing the laser radar transmitter 1 and can play a role in supporting and stabilizing the laser radar transmitter 1, and the carrier cloud platform 6 is arranged at the bottom of the laser radar transmitter 1 through a rotary table 4, so that the laser radar transmitter 1 can rotate at an angle on the carrier cloud platform 6, the rotary table 4 can conveniently adjust different-angle transmitting signals, the detection process is more comprehensive, and the carrier cloud platform 6 can effectively ensure the connection stability with the guide rail 7 in the rotating and moving process of the laser radar transmitter 1;
the guide rail 7 is a groove-shaped device made of metal or other materials and used for bearing, fixing and guiding the walking device 14 and reducing friction, the walking device 14 is installed at the bottom of the carrier holder 6 and connected with the guide rail 7, a deep foundation pit supporting system 8 (a pile, a reinforced concrete support and the like) is a carrier of the guide rail 7, the guide rail 7 is laid along a general frame line of the deep foundation pit supporting system 8 and is used for moving the detection unit to different heights of different subareas along with the entering of the support;
the walking control device 9 is used for controlling the walking device 14 to move according to a planned walking route aiming at the partitioned and layered excavation of the deep foundation pit, the power supply module 13 is used for providing electric energy to drive the walking device 14 to walk on the guide rail 7 according to the planned route, and the walking device 14 is specifically a movable plate or a connecting block or the like connected to the guide rail 7, so that the whole carrier holder 6 and a fixed detection unit thereof can be guaranteed to safely and stably walk on the guide rail 7.
The data processing unit comprises an information receiving device 10 and a data center server 11, the information receiving device 10 is used for receiving point cloud data acquired by the detection unit from any position of the deep foundation pit, the data center server 11 comprises network equipment, a server and a storage, the data is obtained by storing and processing data obtained by wirelessly receiving electric pulses converted by the optical receiver 2, the processing mode is to reconstruct a DEM digital elevation model according to the point cloud data of the deep foundation pit, then, logic operation is carried out on the basis of a model grid diagram, namely, the fluctuation condition of each grid in the deep foundation pit is approximately expressed by using data obtained by spatial interpolation on the grid, the volume difference of each grid is respectively obtained, then, according to the grid composition of each subarea in the deep foundation pit, the volume difference of the grid is summed up and calculated, the excavated volume of each subarea can be obtained, and finally, according to the preset excavated volume of each subarea, the excavation allowance of each partition can be obtained, real-time monitoring of earthwork of different partitions is achieved, and relevant personnel can master the current excavation earthwork amount condition of the deep foundation pit in real time by sending the data to the user side 12, so that timely and accurate construction allocation can be carried out.
In practice, after a vertical continuous wall and a supporting pile are constructed in a deep foundation pit, the deep foundation pit is excavated downwards from the ground surface, a longitudinal groove-shaped guide rail 7 is firstly paved on the vertical pile or the continuous wall, when the deep foundation pit is excavated to a designed elevation, a cross brace is constructed at the upper part, the guide rail 7 is paved at the same time when the cross brace is constructed, the smooth connection with the longitudinal guide rail 7 is ensured, a carrier cloud platform 6 is installed at a position closest to the ground surface and is connected with a corresponding power circuit and a walking control device 9, then a complete detection unit is installed on the carrier cloud platform 6 through a rotary platform 4, the stable and reliable connection is ensured, the detection unit starts to operate under the condition that the construction is not influenced, the external walking control device 9 controls a walking device 14 to walk according to a planned route, the angle of a laser radar transmitter 1 is well adjusted by the rotary platform 4, pulse light signals are reflected back, the photodiode of the optical receiver 2 receives the echo optical signal and converts the echo optical signal into an electric signal, the echo signal is processed into point cloud data by a processing chip 3 and then transmitted to a data processing unit through a wireless transmitting device 5, the construction is continued at the moment, a guide rail 7 is continuously laid along with the excavation of a construction supporting system, the point cloud data is monitored and transmitted to the data processing unit in real time, the point cloud data received by the data processing unit is processed and calculated to generate a DEM digital elevation map, logic operation is carried out on the basis of a model grid map, namely, the fluctuation condition of each micro element (namely each grid in the grid map) in a deep foundation pit is approximately expressed by using data after spatial interpolation on the grid, the volume difference of each micro element is respectively obtained, then, the excavated earth volume is obtained by summation, and the earth volume condition quantized values of different partitions at the moment are transmitted to a user terminal in a short message mode, and at the moment, the construction of the deep foundation pit is continued, and the detection unit continues to walk in a partitioned and layered manner according to the planned route in real time, so that the whole set of monitoring method is continuously completed.
The specific work flow of monitoring the earth volume of the deep foundation pit excavation is shown in fig. 2, and comprises the following steps:
s1, according to the set walking route, the guide rail servo motion unit is used as a carrier of the detection unit, so that the detection unit moves along the deep foundation pit supporting system frame;
s2, in the moving process of the detection unit, sequentially collecting point cloud data of different positions of the deep foundation pit by the detection unit according to preset data sampling interval time, and transmitting the collected point cloud data to the data processing unit in real time until the detection unit moves to the end point of the walking route;
s3, the data processing unit constructs a corresponding digital elevation model in real time according to the point cloud data received in real time, and calculates and obtains excavated earth volume and excavation allowance of each partition in the current deep foundation pit by combining preset earth volume needing excavation of the deep foundation pit:
firstly, a data processing unit constructs a corresponding digital elevation model according to all currently received point cloud data;
and then calculating the excavated earth volume of each partition in the deep foundation pit by adopting a logical operation mode based on the constructed digital elevation model grid diagram, wherein the logical operation process comprises the following steps: determining the fluctuation state of each grid in the deep foundation pit by using data after spatial interpolation on the grids, respectively calculating the volume difference of each grid, and summing the volume differences corresponding to the grids forming the subareas according to the grid composition of each subarea in the deep foundation pit to obtain the excavated earth volume of the subarea;
and S33, calculating to obtain the excavation allowance of each partition in the deep foundation pit according to the excavated earth volume of each partition in the deep foundation pit and the preset earth volume to be excavated in the deep foundation pit.
In conclusion, the invention can realize the purpose of accurately monitoring the excavation conditions of different partitions of the deep foundation pit in real time by using the laser radar detection unit, the guide rail servo motion unit and the data processing unit and through the steps of laser radar detection, walking control, signal transmission and reception, DEM reconstruction, logic operation, real-time feedback and the like, and has great significance for realizing the real-time monitoring and intelligent management of deep foundation pit engineering.
Claims (10)
1. The utility model provides a monitoring system of deep basal pit excavation earthwork volume, its characterized in that, includes detecting element, guide rail servo motion unit and data processing unit, guide rail servo motion unit is connected with detecting element, detecting element is connected to data processing unit, detecting element is used for gathering the point cloud data of deep basal pit optional position, guide rail servo motion unit specifically is detecting element's carrier, makes detecting element remove along deep basal pit braced system frame, data processing unit is according to the point cloud data that detecting element gathered, through constructing digital elevation model, calculates and obtains excavation earthwork volume and excavation surplus in the deep basal pit.
2. The system for monitoring the earth volume of the deep foundation pit excavation according to claim 1, the detection unit comprises a laser radar transmitter (1), an optical receiver (2), a processing chip (3) and a wireless transmitting device (5), the processing chip (3) is respectively connected with the laser radar transmitter (1), the optical receiver (2) and the wireless transmitting device (5), the laser radar transmitter (1) is used for transmitting LD pulse laser signals to the interior of the deep foundation pit, the optical receiver (2) is used for receiving echo signals reflected by soil bodies in the deep foundation pit, the processing chip (3) is used for controlling the working states of the laser radar transmitter (1) and the optical receiver (2), and the echo signals are processed into point cloud data, and the wireless transmitting device (5) is used for transmitting the point cloud data to the data processing unit.
3. The system for monitoring the earth volume of the deep foundation pit excavation according to claim 2, the guide rail servo motion unit comprises a carrier cloud deck (6), a guide rail (7), a walking control device (9) and a power supply module (13), the carrier cloud deck (6) is arranged at the bottom of the laser radar transmitter (1), the bottom of the carrier cloud deck (6) is provided with a walking device (14), the traveling device (14) is arranged on the guide rail (7), the guide rail (7) is laid on the frame of the deep foundation pit supporting system (8), the walking device (14) is respectively connected with the walking control device (9) and the power supply module (13), the walking control device (9) controls the walking device (14) to move according to a set walking route, and the power supply module (13) provides electric energy for the walking device (14).
4. The system for monitoring the earth volume of the deep foundation pit excavation according to claim 3, wherein the carrier cloud platform (6) is installed at the bottom of the laser radar transmitter (1) through the rotary table (4), so that the laser radar transmitter (1) can rotate angularly on the carrier cloud platform (6).
5. The system for monitoring the earth volume of the deep foundation pit excavation according to claim 3, wherein the guide rail (7) is of a groove-type structure.
6. The system for monitoring the excavated earth volume of the deep foundation pit according to claim 2, wherein the data processing unit comprises an information receiving device (10) and a data center server (11), the information receiving device (10) is configured to receive the point cloud data from the wireless transmitting device (5), the data center server (11) constructs a corresponding digital elevation model according to the point cloud data, and calculates the excavated earth volume and the excavation allowance of each partition in the deep foundation pit based on the digital elevation model and the preset excavated earth volume of the deep foundation pit.
7. The system for monitoring the excavated earth volume of the deep foundation pit according to claim 6, wherein the data center server (11) is connected with a user terminal (12) to transmit the excavated earth volume and excavation allowance data of each partition in the deep foundation pit to the user terminal (12).
8. A method for monitoring the earth volume of deep foundation pit excavation by applying the monitoring system of claim 1, comprising the steps of:
s1, according to the set walking route, the guide rail servo motion unit is used as a carrier of the detection unit, so that the detection unit moves along the deep foundation pit supporting system frame;
s2, in the moving process of the detection unit, sequentially collecting point cloud data of different positions of the deep foundation pit by the detection unit according to preset data sampling interval time, and transmitting the collected point cloud data to the data processing unit in real time until the detection unit moves to the end point of the walking route;
and S3, the data processing unit constructs a corresponding digital elevation model in real time according to the point cloud data received in real time, and calculates and obtains the excavated earth volume and the excavation allowance of each partition in the current deep foundation pit by combining the preset excavated earth volume of the deep foundation pit.
9. The method for monitoring the excavation earth volume of the deep foundation pit according to claim 8, wherein the step S3 specifically comprises the following steps:
s31, the data processing unit constructs a corresponding digital elevation model according to all the currently received point cloud data;
s32, calculating the excavated earth volume of each partition in the deep foundation pit by adopting a logical operation mode based on the constructed digital elevation model grid diagram;
and S33, calculating to obtain the excavation allowance of each partition in the deep foundation pit according to the excavated earth volume of each partition in the deep foundation pit and the preset earth volume to be excavated in the deep foundation pit.
10. The method for monitoring the excavation earth volume of the deep foundation pit according to claim 9, wherein the logical operation in the step S32 is specifically as follows: and determining the fluctuation state of each grid in the deep foundation pit by using the data after spatial interpolation on the grids, respectively calculating the volume difference of each grid, and summing the volume differences corresponding to the grids forming the subareas according to the grid composition of each subarea in the deep foundation pit to obtain the excavated earth volume of the subarea.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113074631A (en) * | 2021-03-11 | 2021-07-06 | 中国水利水电第七工程局有限公司 | Method for measuring rock-fill dam pit test volume through handheld three-dimensional laser scanning |
| CN115341525A (en) * | 2022-08-25 | 2022-11-15 | 深圳市东深工程有限公司 | Monitoring system and method for earth volume of deep foundation pit excavation |
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| CN110285792A (en) * | 2019-07-02 | 2019-09-27 | 山东省交通规划设计院 | A kind of fine grid earthwork metering method of unmanned plane oblique photograph |
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| CN102042814A (en) * | 2010-06-24 | 2011-05-04 | 中国人民解放军国防科学技术大学 | Projection auxiliary photographing measurement method for three-dimensional topography of large storage yard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113074631A (en) * | 2021-03-11 | 2021-07-06 | 中国水利水电第七工程局有限公司 | Method for measuring rock-fill dam pit test volume through handheld three-dimensional laser scanning |
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