Foundation pit monitoring well with anti-backflow function

Abstract

The utility model belongs to the technical field of foundation pit monitoring wells, and particularly provides a foundation pit monitoring well with an anti-backflow function, which comprises a monitoring well body, an observation well casing is mounted in the monitoring well body, a well cover is mounted at a well mouth of the monitoring well body, and the well cover is positioned above the observation well casing. A funnel-shaped flow guide cover is installed on the upper portion of the observation well pipe, a protective cover is movably installed at the top end, close to the well lid, of the flow guide cover, the observation well pipe is sleeved with the bottom end of the flow guide cover in a sliding mode, and the bottom end of the flow guide cover is lower than the top end of the observation well pipe. Through the arrangement of the flow guide cover and the protective cover, rainwater on the ground can be effectively prevented from flowing into the observation well pipe, and therefore the monitoring precision of the water level of the foundation pit monitoring well can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit monitoring wells, and relates to a foundation pit monitoring well with an anti-backflow function. Background Technique

[0002] During the construction of deep and large underground spaces, the main reason for potential safety hazards to surrounding buildings, structures, and underground pipelines is deformation. Delving deeper, it is because the excavation construction of deep and large underground spaces causes changes in the surrounding groundwater level, leading to soil subsidence and deformation, which in turn drives the surrounding environment to deform. In mild cases, it affects their normal use, and in severe cases, it may even cause major safety accidents such as collapse. Therefore, during the construction of deep and large foundation pits in China at present, the groundwater level outside the pit is monitored to observe the impact of foundation pit construction on the surrounding water level changes, in order to prevent potential safety hazards brought to surrounding buildings, structures, and underground pipelines due to excessive changes in the surrounding water level caused by foundation pit excavation.

[0003] Currently, the underground water level monitoring technology usually involves arranging several water level observation wells at a certain distance outside the retaining structure and near surrounding buildings, structures, and underground pipelines. By regularly measuring the underground water level, the changes in the underground water level can be detected in a timely manner, and the impact of foundation pit construction on surrounding buildings, structures, and underground pipelines can be evaluated. This method has played a certain positive role in the safe construction of foundation pits.

[0004] However, the current monitoring wells cannot effectively prevent rainwater backflow, which affects the monitoring accuracy of the water level in the monitoring wells. In addition, the existing monitoring wells cannot quickly judge the changes in the water level, bringing uncertainty to construction safety. Content of the Utility Model

[0005] In view of the technical problems in the prior art, the utility model provides a foundation pit monitoring well with an anti-backflow function, which includes a monitoring well body. An observation well pipe is installed inside the monitoring well body, and a manhole cover is installed at the wellhead of the monitoring well body. The manhole cover is located above the observation well pipe. A funnel-shaped diversion cover is installed at the upper part of the observation well pipe. A protective cover is movably installed at the top of the diversion cover close to the manhole cover. The bottom end of the diversion cover is slidably sleeved outside the observation well pipe, and the bottom end of the diversion cover is lower than the top end of the observation well pipe.

[0006] Furthermore, a rubber ring is provided between the diversion cover and the observation well pipe.

[0007] Furthermore, a water level monitoring mechanism is provided inside the observation well pipe. The water level monitoring mechanism includes a buoyancy ball and a vertical rod provided with scale dimension lines. The buoyancy ball floats on the water surface. A through hole is opened on the diversion cover. One end of the vertical rod is fixedly connected to the buoyancy ball, and the other end extends out of the diversion cover through the through hole. The vertical rod is hermetically and slidably connected to the diversion cover.

[0008] Further, the water level monitoring mechanism further includes a guiding telescopic rod, which is parallel to and spaced from the vertical rod. One end of the guiding telescopic rod is fixedly connected to the buoyancy ball, and the other end is fixedly connected to the flow guide cover.

[0009] Further, a mounting block is slidably provided on the vertical rod. The mounting block is located below the flow guide cover and is locked to the vertical rod by bolts. A pressure sensor is provided on the mounting block, and the pressure sensor is connected to an external alarm. When the pressure sensor contacts the flow guide cover, the alarm gives an alarm; otherwise, it does not alarm.

[0010] Further, the materials of the flow guide cover and the protective cover are PVC.

[0011] Further, the observation well pipe is a non-sand pipe or a steel pipe.

[0012] Further, the material of the well cover is cast iron.

[0013] Beneficial effects:

[0014] 1. In the present utility model, through the settings of the flow guide cover and the protective cover, it can effectively prevent rainwater on the ground from flowing into the observation well pipe, thereby improving the monitoring accuracy of the water level in the foundation pit monitoring well. Specifically, during use, the water level in the observation well pipe can be conveniently monitored by disassembling the flow guide cover or directly opening the protective cover. After installing the flow guide cover and closing the protective cover, by the guiding effect of the flow guide cover, rainwater on the ground can flow from the surface of the flow guide cover through the outer surface of the observation well pipe into the monitoring well body, effectively preventing the backflow of rainwater. Combined with the setting that the bottom end of the flow guide cover is slidably sleeved with the observation well pipe, it is convenient to disassemble and assemble the flow guide cover.

[0015] 2. In the present utility model, through the setting of the rubber ring, the sealing performance between the flow guide cover and the observation well pipe can be improved, preventing rainwater from flowing into the observation well pipe between the two.

[0016] 3. In the present utility model, through the setting of the water level monitoring mechanism including the buoyancy ball and the vertical rod provided with scale dimension lines, it can be convenient and fast to confirm the change of the water level by the length of the vertical rod extending out of the flow guide cover. Combined with the setting of the scale dimension lines, the specific value of the water level change can be accurately confirmed; combined with the setting of the guiding telescopic rod, the linear motion of the buoyancy ball can be ensured, further improving the monitoring accuracy of the water level; through the settings of the mounting block, the pressure sensor and the alarm, the warning water level can be freely set, which is convenient to remind the construction personnel and further ensure the construction safety.

[0017] 4. In the present utility model, through the setting that the materials of the flow guide cover and the protective cover are PVC, it is convenient for on-site production; through the setting that the material of the well cover is cast iron, it is convenient for vehicle passage. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic diagram of the overall installation structure of the present utility model;

[0020] Figure 2 Schematic diagram of the installation structure of the vertical rod and the observation well pipe of the present utility model;

[0021] Figure 3 is Figure 2 a half-sectional view in one direction of

[0022] Figure 4 is Figure 2 a half-sectional view in another direction of

[0023] Figure 5 is Figure 4 a detailed structural diagram of part A in

[0024] Explanation of reference numerals:

[0025] 1. Monitoring well body; 2. Observation well pipe; 3. Manhole cover; 4. Flow guiding cover; 41. Through hole; 5. Protection cover; 6. Rubber ring; 7. Buoyancy ball; 8. Vertical rod; 9. Guided telescopic rod; 10. Installation block; 11. Pressure sensor. Specific embodiments

[0026] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will give a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0029] In the present application, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0031] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0032] The utility model provides a foundation pit monitoring well with an anti-backflow function, as Figure 1 , Figure 2 shown, which includes a monitoring well body 1. An observation well pipe 2 is installed in the monitoring well body 1. The observation well pipe 2 is a non-sand pipe or a steel pipe. A manhole cover 3 is installed at the wellhead of the monitoring well body 1. To facilitate the entry of rainwater into the monitoring well body 1, the surface of the manhole cover 3 is slightly lower than the ground. The material of the manhole cover 3 is cast iron, and using cast iron can improve the strength and facilitate vehicle passage. The manhole cover 3 is located above the observation well pipe 2. A funnel-shaped flow guide cover 4 is installed at the upper part of the observation well pipe 2. The top of the flow guide cover 4 is small and the bottom is large. A protective cover 5 is movably installed near the top of the flow guide cover 4 close to the manhole cover 3. The materials of the flow guide cover 4 and the protective cover 5 are PVC, which can facilitate on-site production and save costs. The bottom end of the flow guide cover 4 is slidably sleeved outside the observation well pipe 2, and the bottom end of the flow guide cover 4 is lower than the top end of the observation well pipe 2.

[0033] In this embodiment, through the setting of the flow guide cover 4 and the protective cover 5, it can effectively prevent rainwater on the ground from flowing into the observation well pipe 2, thereby improving the monitoring accuracy of the water level in the foundation pit monitoring well. Specifically, when in use, the water level in the observation well pipe 2 can be conveniently monitored by disassembling the flow guide cover 4 or directly opening the protective cover 5. After installing the flow guide cover 4 and closing the protective cover 5, by using the guiding effect of the flow guide cover 4, rainwater on the ground can flow from the surface of the flow guide cover 4 through the outer surface of the observation well pipe 2 into the monitoring well body 1, effectively preventing the backflow of rainwater. Combining the setting that the bottom end of the flow guide cover 4 is slidably sleeved on the observation well pipe 2, it is convenient to disassemble and assemble the flow guide cover 4.

[0034] In the utility model, preferably, as Figure 2 , Figure 3 shown, a rubber ring 6 is provided between the flow guide cover 4 and the observation well pipe 2.

[0035] In this embodiment, through the setting of the rubber ring 6, the sealing performance between the flow guide cover 4 and the observation well pipe 2 can be improved, preventing rainwater from flowing into the observation well pipe 2 between the two.

[0036] In the utility model, preferably, as Figure 2 , Figure 3 andFigure 4 As shown, a water level monitoring mechanism is provided inside the observation well pipe 2. The water level monitoring mechanism includes a buoyancy ball 7 and a vertical rod 8 provided with scale lines. The buoyancy ball 7 floats on the water surface. A through hole 41 is formed on the flow guide cover 4. One end of the vertical rod 8 is fixedly connected to the buoyancy ball 7, and the other end extends out of the flow guide cover 4 through the through hole 41. The vertical rod 8 is hermetically and slidably connected to the flow guide cover 4. To prevent the top of the vertical rod 8 from detaching from the flow guide cover 4 when the water level is too low, a stop block can be provided at the bottom end of the vertical rod 8. The water level monitoring mechanism further includes a guiding telescopic rod 9. The guiding telescopic rod 9 is parallel to and spaced from the vertical rod 8. One end of the guiding telescopic rod 9 is fixedly connected to the buoyancy ball 7, and the other end is fixedly connected to the flow guide cover 4.

[0037] In this embodiment, by providing the water level monitoring mechanism including the buoyancy ball 7 and the vertical rod 8 provided with scale lines, the change of the water level can be conveniently and quickly confirmed by the length of the vertical rod 8 extending out of the flow guide cover 4. Combining with the setting of the scale lines, the specific value of the water level change can be accurately confirmed. Combining with the setting of the guiding telescopic rod 9, the linear motion of the buoyancy ball 7 can be ensured, and the monitoring accuracy of the water level can be further improved.

[0038] In the present utility model, preferably, as Figure 3 、 Figure 4 and Figure 5 shown, an installation block 10 is slidably provided on the vertical rod 8. The installation block 10 is located below the flow guide cover 4 and is locked to the vertical rod 8 by bolts. A pressure sensor 11 is provided on the installation block 10. The pressure sensor 11 is connected to an external alarm. When the pressure sensor 11 contacts the flow guide cover 4, the alarm goes off, otherwise it does not.

[0039] In this embodiment, by providing the installation block 10, the pressure sensor 11 and the alarm, the warning water level can be freely set, which is convenient for reminding the construction personnel and further ensuring the construction safety.

[0040] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0041] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A foundation pit monitoring well with a backflow prevention function, comprising a monitoring well body (1), an observation well pipe (2) installed in the monitoring well body (1), a well cover (3) installed at the wellhead of the monitoring well body (1), the well cover (3) being located above the observation well pipe (2), characterized in that: A funnel-shaped flow guide cover (4) is installed on the upper part of the observation well pipe (2), and a protective cover (5) is movably installed on the top of the flow guide cover (4) close to the well cover (3). The bottom end of the flow guide cover (4) is slidably sleeved on the outside of the observation well pipe (2), and the bottom end of the flow guide cover (4) is lower than the top end of the observation well pipe (2).

2. The foundation pit monitoring well with anti-backflow function according to claim 1 is characterized in that: A rubber ring (6) is provided between the flow guide cover (4) and the observation well pipe (2).

3. A foundation pit monitoring well with anti-backflow function according to claim 1 or 2, characterized in that: A water level monitoring mechanism is provided in the observation well pipe (2), and the water level monitoring mechanism comprises a buoyancy ball (7) and a vertical rod (8) provided with a scale dimension line. The buoyancy ball (7) floats on the water surface. A through hole (41) is provided on the fairing (4). One end of the vertical rod (8) is fixedly connected to the buoyancy ball (7), and the other end passes through the through hole (41) and extends out of the fairing (4). The vertical rod (8) is sealed and slidably connected to the fairing (4).

4. The foundation pit monitoring well with anti-backflow function according to claim 3 is characterized in that: The water level monitoring mechanism also includes a guide telescopic rod (9), which is parallel to the vertical rod (8) and spaced apart, one end of which is fixedly connected to the buoyancy ball (7) and the other end of which is fixedly connected to the deflector cover (4).

5. The foundation pit monitoring well with anti-backflow function according to claim 4 is characterized in that: A mounting block (10) is slidably provided on the vertical rod (8), the mounting block (10) is located below the air deflector (4) and is locked with the vertical rod (8) by bolts, a pressure sensor (11) is provided on the mounting block (10), the pressure sensor (11) is connected to an external alarm, and when the pressure sensor (11) contacts the air deflector (4), the alarm sounds an alarm, otherwise it does not sound an alarm.

6. The foundation pit monitoring well with anti-backflow function according to claim 1 is characterized in that: The material of the air guide cover (4) and the protective cover (5) is PVC.

7. The foundation pit monitoring well with anti-backflow function according to claim 1 is characterized in that: The observation well pipe (2) is a sand-free pipe or a steel pipe.

8. The foundation pit monitoring well with anti-backflow function according to claim 1 is characterized in that: The material of the manhole cover (3) is cast iron.

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