Foundation pit slope excavation control device and method

Abstract

The present invention provides a foundation pit slope excavation control device and method. The present invention utilizes a light source system for emitting a first infrared ray toward the foundation pit slope and a second infrared ray toward the foundation pit bottom; a photoelectric sensor array for receiving the emitted first and second infrared rays and / or the reflected light of the second infrared ray and generating corresponding feedback information; a data analysis system for determining the actual excavation surface slope and actual excavation depth based on the feedback information received by the photoelectric sensor array; and a comparison of the actual excavation surface slope with a preset standard excavation surface slope. If the difference exceeds a preset threshold, an alarm command is issued to an alarm system. The present invention utilizes the light source system and the data analysis system to collect slope data, thereby improving identification accuracy and enhancing construction safety. The present invention utilizes the device with low labor consumption and high efficiency.

Description

Technical Field

[0001] The invention relates to a foundation pit slope excavation control device and method. Background Art

[0002] Because some construction projects have relatively hard underground soil, slope excavation is often used. However, during the excavation process, due to on-site geological factors and actual construction errors, the slope of the foundation pit often fails to meet the requirements of the plan and drawings, thus affecting the stability of the foundation pit slope, posing a safety hazard, and affecting acceptance. Summary of the Invention

[0003] The object of the present invention is to provide a foundation pit slope excavation control device and method.

[0004] To solve the above problems, the present invention provides a foundation pit slope excavation control device and method thereof, comprising:

[0005] A light source system is used to emit a second infrared ray toward the foundation pit slope and toward the foundation pit bottom;

[0006] a photoelectric sensor array, configured to receive the emitted first infrared ray, the second infrared ray and / or the reflected light of the received second infrared ray, and generate feedback information corresponding to the first infrared ray, the second infrared ray and / or the reflected light;

[0007] The data analysis system is used to determine the actual excavation surface slope and actual excavation depth based on the feedback information received by the photoelectric sensor array; and compare the actual excavation surface slope with the preset standard excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm command is issued to the alarm system;

[0008] The alarm system is used to send out an alarm signal based on an alarm instruction.

[0009] Furthermore, in the above device, the light source system includes:

[0010] infrared device;

[0011] a switch device connected to the infrared device;

[0012] The angle adjustment device connected to the infrared device is used to adjust the angles of the first and second infrared rays emitted.

[0013] Furthermore, in the above device, the data analysis system includes:

[0014] An input device for obtaining a target slope rate and a target depth and sending them to an angle adjustment device of a light source system;

[0015] a collecting device for collecting feedback information corresponding to the first infrared ray, the second infrared ray and / or the reflected light of the second infrared ray from the photoelectric sensor array;

[0016] A feedback device is used to determine the actual excavation surface slope and the actual excavation depth based on the feedback information received from the photoelectric sensor array; and compare the actual excavation surface slope with the target excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system; and compare the actual excavation depth with the target excavation depth to determine the difference. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system;

[0017] The angle adjustment device of the light source system is used to emit a first infrared ray to the foundation pit slope and a second infrared ray to the pit bottom based on the target slope gradient and the target depth.

[0018] Furthermore, in the above device, the alarm system includes: a warning light and an audio device.

[0019] Furthermore, in the above-mentioned device, the data analysis system is used to determine the actual excavation surface slope based on the position and angle change of the first infrared ray reaching the photoelectric sensor array in the corresponding feedback information.

[0020] Furthermore, in the above-mentioned device, the data analysis system is used to calculate the distance traveled by the second infrared ray and / or the reflected light of the second infrared ray based on the time when the photoelectric sensor array receives the second infrared ray or the reflected light of the second infrared ray in the corresponding feedback information, and obtain the actual excavation depth according to the distance and the emission angle of the second infrared ray.

[0021] Furthermore, in the above device, the first infrared rays of the foundation pit slope are multiple, which are respectively set at different positions of the same foundation pit slope.

[0022] Furthermore, in the above device, there are multiple second infrared rays at the bottom of the foundation pit, which are respectively set at different positions on the bottom of the same foundation pit.

[0023] Furthermore, in the above device, the photoelectric sensor array is arranged at the top edge of the foundation pit slope when acquiring the actual excavation surface slope and the actual excavation depth;

[0024] Alternatively, the photoelectric sensor array is set at the top edge of the foundation pit slope when obtaining the actual excavation surface slope; the photoelectric sensor array is set at the reflection area of the foundation pit bottom when obtaining the actual excavation depth.

[0025] According to another aspect of the present invention, a foundation pit slope excavation control method is provided, using any one of the foundation pit slope excavation control devices described above, the method comprising:

[0026] Before the first foundation pit excavation or before the next level foundation pit excavation after the foundation pit platform is completed, install a bracket outside the control line of the foundation pit slope top or the top of the excavation surface, then install the light source system on the bracket, and input the target slope rate and target depth on the input device;

[0027] When excavating the foundation pit every day, the excavation depth, excavation area division and excavation duration of the foundation pit are set based on the target slope gradient and target depth;

[0028] The light source system emits divergent infrared rays to the pit slope and pit bottom. Three first infrared rays are emitted to the pit slope for subsequent comparison with the actual excavation surface slope; three second infrared rays are emitted to the pit bottom for subsequent control of excavation depth.

[0029] At the beginning of excavation, ensure that the first infrared ray emitted to the foundation pit slope coincides with the design requirement foundation pit slope corresponding to the target slope gradient, and excavate according to the range of the first infrared ray emitted to the foundation pit slope;

[0030] At 1 / 2 of the construction time on the day and the time of completion of the construction, the light source system emits a first infrared ray that coincides with the current actual foundation pit slope and a second infrared ray toward the current actual foundation pit bottom. The data analysis system determines the actual excavation surface slope based on the position and angle change of the first infrared ray arriving at the photoelectric sensor array in the corresponding feedback information of the photoelectric sensor array; calculates the distance traveled by the second infrared ray or the reflected light of the second infrared ray based on the time when the photoelectric sensor array receives the second infrared ray or the reflected light of the second infrared ray in the corresponding feedback information, and obtains the actual excavation depth based on the distance and the emission angle of the second infrared ray; compares the actual excavation surface slope with the target excavation surface slope, and if the difference exceeds the preset threshold, issues an alarm command to the alarm system; compares the actual excavation depth with the target excavation depth, and if the difference exceeds the preset threshold, issues an alarm command to the alarm system.

[0031] Compared with the prior art, the present invention uses a light source system to emit a first infrared ray toward the foundation pit slope and a second infrared ray toward the foundation pit bottom; a photoelectric sensor array to receive the emitted first infrared ray, second infrared ray, and / or the reflected light of the second infrared ray, and to generate feedback information corresponding to the first infrared ray, second infrared ray, and / or the reflected light; a data analysis system to determine the actual excavation surface slope and actual excavation depth based on the feedback information received by the photoelectric sensor array; and to compare the actual excavation surface slope with a preset standard excavation surface slope. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system; and the alarm system is used to issue an alarm signal based on the alarm instruction. The present invention uses the light source system and the data analysis system to collect slope data, thereby improving recognition accuracy and construction safety. The use of the equipment in the present invention requires less labor and is highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of a single-stage slope reduction device for excavation of a foundation pit slope according to an embodiment of the present invention;

[0033] Figure 2 Schematic diagram of multi-stage slope reduction of a foundation pit slope excavation control device according to an embodiment of the present invention;

[0034] Figure 3 FIG. 1 is a schematic diagram of a light source system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 3 As shown, the present invention provides a foundation pit slope excavation control device, comprising:

[0037] A light source system 1 is used to emit a first infrared ray 3 toward the foundation pit slope and a second infrared ray 4 toward the foundation pit bottom;

[0038] a photoelectric sensor array, configured to receive the emitted first infrared ray, the second infrared ray and / or the reflected light of the received second infrared ray, and generate feedback information corresponding to the first infrared ray, the second infrared ray and / or the reflected light;

[0039] The data analysis system is used to determine the actual excavation surface slope and actual excavation depth based on the feedback information received by the photoelectric sensor array; and compare the actual excavation surface slope with the preset standard excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm command is issued to the alarm system;

[0040] The alarm system is used to send out an alarm signal based on an alarm instruction.

[0041] Here, when obtaining the actual excavation surface slope and the actual excavation depth, the photoelectric sensor array can be set at the top 6 edge of the foundation pit slope;

[0042] Alternatively, the photoelectric sensor array is set at the top edge of the foundation pit slope when obtaining the actual excavation surface slope; the photoelectric sensor array is set at the reflective area of the foundation pit bottom when obtaining the actual excavation depth.

[0043] The photoelectric sensor array and light source system can also be installed opposite each other at the top of the foundation pit slope. The light source system emits rays parallel to the designed slope gradient toward the excavation surface within the foundation pit. The photoelectric sensor array receives the reflected light from these first and second infrared rays to obtain relevant information and calculate the actual slope and depth of the excavation surface.

[0044] The present invention relates to foundation pit excavation slope control technology. The equipment mainly consists of a light source system, a data analysis system, an alarm system, etc. Through light source control and data analysis and alarm, it ensures that the slope rate meets the design requirements, prevents large slope rate errors during foundation pit excavation, and avoids safety accidents at the construction site.

[0045] like Figure 3 As shown, in one embodiment of the foundation pit slope excavation control device of the present invention, the light source system 1 includes:

[0046] Infrared device 2;

[0047] a switch device 10 connected to the infrared device;

[0048] The angle adjustment device 11 connected to the infrared device is used to adjust the angles of the first and second infrared rays emitted.

[0049] Here, the light source system mainly consists of a switch device, an infrared device, and an angle adjustment device, and mainly emits infrared rays.

[0050] Switching device: used to control the opening and closing of the light source system, so as to start the equipment for monitoring when needed, and shut it down when not needed to save energy or avoid unnecessary interference.

[0051] Infrared device: This is the core component of the light source system, responsible for emitting infrared rays. Infrared rays have strong directionality and penetration, can propagate well in the foundation pit environment, and are not easily interfered with by external light, thus providing a stable signal source for accurate monitoring.

[0052] Angle Adjustment Device: The infrared beam's emission angle can be adjusted based on actual needs. Precisely adjusting the angle allows the infrared beam to accurately illuminate the excavation surface area to be monitored, ensuring accurate and comprehensive monitoring. For example, depending on the shape, size, and depth of the foundation pit, as well as the excavation requirements at different locations, the infrared beam's angle can be flexibly adjusted to cover the entire excavation surface and obtain accurate optical path information.

[0053] In one embodiment of the foundation pit slope excavation control device of the present invention, the data analysis system includes:

[0054] An input device for obtaining a target slope rate and a target depth and sending them to an angle adjustment device of a light source system;

[0055] a collecting device for collecting feedback information corresponding to the first infrared ray, the second infrared ray and / or the reflected light of the second infrared ray from the photoelectric sensor array;

[0056] A feedback device is used to determine the actual excavation surface slope and the actual excavation depth based on the feedback information received from the photoelectric sensor array; and compare the actual excavation surface slope with the target excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system; and compare the actual excavation depth with the target excavation depth to determine the difference. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system;

[0057] The angle adjustment device of the light source system is used to emit a first infrared ray to the slope of the foundation pit and a second infrared ray to the bottom of the pit based on the target slope gradient and the target depth.

[0058] Here, the data analysis system consists of a feedback device and a collection device. It mainly obtains the actual excavation slope based on the first infrared ray, the second infrared ray and / or the reflected light of the second infrared ray on site, and compares the actual excavation slope with the input design and the standard excavation surface slope required by the plan. The allowable deviation value is determined according to the actual situation of the project. If the difference exceeds the allowable value, the alarm system will be triggered.

[0059] In one embodiment of the foundation pit slope excavation control device of the present invention, Figure 3 As shown, the alarm system includes: a warning light 12 and an audio device 13.

[0060] Here, the alarm system mainly consists of warning lights and sound devices.

[0061] In one embodiment of the foundation pit slope excavation control device of the present invention, the data analysis system is used to determine the actual excavation surface slope based on the position and angle change of the first infrared ray reaching the photoelectric sensor array in the corresponding feedback information; based on the time when the photoelectric sensor array receives the second infrared ray or the reflected light of the second infrared ray in the corresponding feedback information, calculate the distance traveled by the second infrared ray and / or the second infrared ray, and obtain the actual excavation depth based on the distance and the emission angle of the second infrared ray.

[0062] Here, the photoelectric sensor array receives the first infrared ray directly emitted by the light source system. The light source system emits rays parallel to the designed slope gradient. As the slope of the excavation surface changes, the position and angle at which the first infrared ray reaches the photoelectric sensor array also change accordingly. By analyzing these changes, the actual slope of the excavation surface can be calculated.

[0063] When the slope of the excavation surface changes, the intersection of the first infrared ray and the excavation surface will also change accordingly. The position and intensity of the first infrared ray received by the photoelectric sensor array will also change accordingly. By analyzing these changes, the actual slope of the excavation surface can be calculated.

[0064] To determine the actual excavation face slope, the photoelectric sensor array primarily receives the direct first infrared light emitted by the light source system. The slope is calculated by analyzing the position and angle changes of the direct first infrared light reaching the photoelectric sensor array. To determine the actual excavation face depth, the reflected light is used for measurement, and information related to the direct light can be combined to improve measurement accuracy and reliability.

[0065] To determine the actual excavation depth, the second infrared ray can first be controlled by the emission depth. The light source system emits three second infrared rays to the pit bottom, which are used to control the excavation depth. These three second infrared rays are emitted from a point source on the slope. Their emission angle and length are determined based on the relationship between the designed excavation depth and the slope position. They can be understood as virtual straight lines from a point on the slope to the pit bottom. Secondly, if the photoelectric sensor array is located in the reflective area at the pit bottom, the time it takes for the second infrared ray to reach the photoelectric sensor array can be measured. If the photoelectric sensor array is located at the top edge of the pit slope, the time it takes for the reflected second infrared ray to reach the photoelectric sensor array can be measured. Specifically, after the second infrared ray reaches the pit bottom, it is reflected back from the pit bottom. By measuring the time from emission to reception of the reflected ray and combining it with the propagation speed of the second infrared ray and its reflected ray in air, the distance traveled by the second infrared ray and its reflected ray can be calculated. Finally, the excavation depth is determined: Since the emission point of the second infrared ray is known (based on a fixed point on the slope), the vertical depth of the pit bottom relative to the emission point can be determined using trigonometric functions and other geometric calculations based on the calculated ray propagation distance and emission angle, thereby determining the actual excavation depth. Comparing the actual excavation depth with the excavation depth set for the foundation pit on that day will determine whether the excavation depth meets the requirements.

[0066] In one embodiment of the foundation pit slope excavation control device of the present invention, there are multiple first infrared rays of the foundation pit slope, which are respectively set at different positions of the same foundation pit slope; there are multiple second infrared rays of the foundation pit bottom, which are respectively set at different positions of the same foundation pit bottom.

[0067] Here, the actual excavation surface slope can be determined by taking the average value of the three rays of the first infrared ray; and the actual excavation depth can be determined by taking the average value of the three rays of the second infrared ray.

[0068] like Figures 1 to 3 According to another aspect of the present invention, a foundation pit slope excavation control construction method is provided, which uses the above foundation pit slope excavation control device, and the method includes:

[0069] Step S1: Before the first foundation pit excavation or before the next foundation pit excavation after the foundation pit platform 9 is completed, install the bracket 5 outside the control line of the foundation pit slope top 6 or the top of the foundation pit platform 9, then install the light source system 1 on the bracket, and input the target slope gradient and target depth on the input device;

[0070] Here, you can input data such as the slope required by the design drawings into the device. Then you can debug the device to ensure that the light can be emitted normally.

[0071] Step S2: When excavating the foundation pit every day, based on the target slope gradient and target depth, set the excavation depth (which can be different every day), excavation area (different slopes and depths are required for different equipment layout areas), and excavation duration.

[0072] In step S3, the light source system emits divergent infrared rays toward the foundation pit slope 7 and the foundation pit bottom 8. Three first infrared rays are emitted toward the foundation pit slope for subsequent comparison with the actual excavation surface slope; and three second infrared rays are emitted toward the foundation pit bottom for subsequent control of the excavation depth.

[0073] Step S4: at the start of excavation, ensuring that the first infrared ray emitted toward the foundation pit slope coincides with the design requirement foundation pit slope corresponding to the target slope gradient, and excavating according to the range of the first infrared ray emitted toward the foundation pit slope;

[0074] Here, before digging, ensure that the intercepting ditch is put into use. The intercepting ditch can be set on the top of the slope to prevent water from entering the pit. The equipment is set in the intercepting ditch;

[0075] Before excavation, first check the on-site positioning control lines (piles) and elevation control piles, and lay out the gray lines between the upper and lower blocks. After the verification is qualified, excavation can be carried out;

[0076] When excavating, the principle of "division and division" can be followed, and the principle of "time and space effect" of the soil can be utilized to excavate in a time-limited, symmetrical and parallel manner. The light source system is set at the top of each block.

[0077] Step S5: At half of the construction time on the day and the time of completion of the construction, the light source system emits a first infrared ray that coincides with the current actual foundation pit slope and a second infrared ray toward the current actual foundation pit bottom. The data analysis system determines the actual excavation surface slope based on the position and angle change of the first infrared ray arriving at the photoelectric sensor array in the corresponding feedback information of the photoelectric sensor array; calculates the distance traveled by the second infrared ray or the reflected light of the second infrared ray based on the time when the photoelectric sensor array receives the second infrared ray or the reflected light of the second infrared ray in the corresponding feedback information, and obtains the actual excavation depth according to the distance and the emission angle of the second infrared ray; compares the actual excavation surface slope with the target excavation surface slope, and if the difference exceeds the preset threshold, issues an alarm command to the alarm system; compares the actual excavation depth with the target excavation depth, and if the difference exceeds the preset threshold, issues an alarm command to the alarm system.

[0078] Here, the data analysis system compares the emitted ray feedback with the input design and scheme required slope, and the allowable deviation value is determined according to the actual situation of the project; if the actual deviation exceeds the control requirements, the alarm system is activated to remind on-site construction adjustments to ensure the safety of foundation pit excavation.

[0079] In summary, the present invention collects slope data by using a light source system and a data analysis system, thereby improving recognition accuracy and construction safety; the present invention uses the equipment with low labor consumption and high efficiency.

[0080] For details of the system embodiments of the present invention, please refer to the corresponding parts of the method embodiments, which will not be repeated here.

[0081] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0082] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present invention.

[0083] Obviously, those skilled in the art may make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A foundation pit slope excavation control device, characterized in that: include: A light source system is used to emit a first infrared ray toward the foundation pit slope and a second infrared ray toward the foundation pit bottom; a photoelectric sensor array, configured to receive the emitted first infrared ray, the second infrared ray and / or the reflected light of the received second infrared ray, and generate feedback information corresponding to the first infrared ray, the second infrared ray and / or the reflected light; The data analysis system is used to determine the actual excavation surface slope and actual excavation depth based on the feedback information received by the photoelectric sensor array; and compare the actual excavation surface slope with the preset standard excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm command is issued to the alarm system; An alarm system, used to issue an alarm signal based on an alarm instruction; The light source system comprises: infrared device; a switch device connected to the infrared device; an angle adjustment device connected to the infrared device, for adjusting the angles of the emitted first and second infrared rays; The data analysis system comprises: An input device for obtaining a target slope rate and a target depth and sending them to an angle adjustment device of a light source system; a collecting device for collecting feedback information corresponding to the first infrared ray, the second infrared ray and / or the reflected light of the second infrared ray from the photoelectric sensor array; A feedback device is used to determine the actual excavation surface slope and the actual excavation depth based on the feedback information received from the photoelectric sensor array; and compare the actual excavation surface slope with the target excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system; and compare the actual excavation depth with the target excavation depth to determine the difference. If the difference exceeds a preset threshold, an alarm instruction is issued to the alarm system; The angle adjustment device of the light source system is used to emit a first infrared ray toward the slope of the foundation pit and a second infrared ray toward the bottom of the pit based on the target slope gradient and the target depth; The alarm system includes: a warning light and an audio device; The data analysis system is used to determine the actual excavation face slope based on the position and angle change of the first infrared ray reaching the photoelectric sensor array in the corresponding feedback information; The data analysis system is configured to calculate a distance traveled by the second infrared ray and / or the reflected light of the second infrared ray based on the time when the photoelectric sensor array receives the second infrared ray or the reflected light of the second infrared ray in the corresponding feedback information, and to obtain an actual excavation depth based on the distance and the emission angle of the second infrared ray; The first infrared rays of the foundation pit slope are multiple, and are respectively set at different positions of the same foundation pit slope; The second infrared rays at the bottom of the foundation pit are multiple and are set at different positions at the bottom of the same foundation pit; The photoelectric sensor array is set at the top edge of the foundation pit slope when obtaining the actual excavation surface slope and the actual excavation depth; Alternatively, the photoelectric sensor array is set at the top edge of the foundation pit slope when obtaining the actual excavation surface slope; the photoelectric sensor array is set at the reflective area of the foundation pit bottom when obtaining the actual excavation depth.

2. A foundation pit slope excavation control method, characterized in that: Using the foundation pit slope excavation control device according to claim 1, the method includes: Before the first foundation pit excavation or before the next level foundation pit excavation after the foundation pit platform is completed, install a bracket outside the control line of the foundation pit slope top or the top of the excavation surface, then install the light source system on the bracket, and input the target slope rate and target depth on the input device; When excavating the foundation pit every day, the excavation depth, excavation area division and excavation duration of the foundation pit are set based on the target slope gradient and target depth; The light source system emits divergent infrared rays toward the pit slope and pit bottom. Three first infrared rays are emitted toward the pit slope for subsequent comparison with the actual excavation surface slope; three second infrared rays are emitted toward the pit bottom for subsequent control of excavation depth. At the start of excavation, the first infrared ray emitted toward the foundation pit slope is ensured to coincide with the design requirement foundation pit slope corresponding to the target slope, and excavation is carried out according to the range of the first infrared ray emitted toward the foundation pit slope. At half of the construction time on the day and at the time of completion of construction, the light source system emits a first infrared ray that coincides with the current actual foundation pit slope and a second infrared ray toward the current actual foundation pit bottom. The data analysis system determines the actual excavation surface slope based on the position and angle change of the first infrared ray arriving at the sensor in the corresponding feedback information from the photoelectric sensor array. The distance traveled by the second infrared ray or the reflected light of the second infrared ray is calculated based on the time of receiving the second infrared ray or the reflected light of the second infrared ray in the corresponding feedback information, and the actual excavation depth is obtained based on the distance and the emission angle of the second infrared ray. The actual excavation surface slope is compared with the target excavation surface slope to determine the difference. If the difference exceeds a preset threshold, an alarm command is issued to the alarm system. The actual excavation depth is compared with the target excavation depth to determine the difference. If the difference exceeds a preset threshold, an alarm command is issued to the alarm system.

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