Dynamic monitoring device for water inflow of water-rich tunnel

Abstract

The water-rich tunnel water inflow dynamic monitoring device comprises a water guide pipe, a supporting rod and a horizontal rod, a fixed hinge shaft is arranged on the pipe wall of the water outlet end of the water guide pipe, the first end of the supporting rod is hinged to the water guide pipe through the fixed hinge shaft, and the first end of the supporting rod is further fixedly connected with an angle measuring scale. A sliding groove is formed in the supporting rod in the length direction, a sliding hinge shaft is connected into the sliding groove in a sliding mode, and one end of the horizontal rod is hinged to the supporting rod through the sliding hinge shaft. When the water inflow of different positions is monitored, the angle of the water guide pipe can be flexibly adjusted, the adjusted angle can be directly read through the angle measuring scale, the device can be rapidly suitable for monitoring the water inflow of drill holes in different positions in a tunnel, especially the water inflow which is difficult to measure such as non-horizontal drill holes, the water inflow is dynamically monitored in real time, the flexibility is high, and the measurement accuracy is high. Operation is simple, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tunnel water inflow monitoring, especially to a water-rich tunnel water inflow dynamic monitoring device. BACKGROUND

[0002] Tunnel construction in China is rapidly developing in the southwest region, and more and more tunnel construction will pass through water-rich areas. During the construction of water-rich tunnels, water inflow disasters often occur due to complex hydrogeological conditions. Water inflow in water-rich tunnels can cause a series of serious problems, including construction interruption, leading to project delay; equipment damage, increasing maintenance and replacement costs; landslides caused by unstable geology, further endangering construction safety. In addition, water inflow can pose a safety threat to construction personnel and increase the risk of accidents. Environmentally, water inflow can carry silt and pollutants, affecting the surrounding ecosystem and causing environmental pollution. Therefore, rapid and accurate prediction and calculation of water inflow in water-rich tunnels are very important for the project.

[0003] Currently, the main methods for predicting water inflow include numerical simulation, analytical formula, empirical formula, groundwater dynamics, and multiple comprehensive analysis. These methods require a long time for observation or simulation to obtain prediction results. However, during construction, if immediate water inflow values are needed, the above methods are no longer applicable.

[0004] The existing water-rich tunnel water inflow measuring device mainly has the following two problems: first, it cannot quickly and accurately measure the water inflow of non-horizontal boreholes at positions such as the arch top; second, the device is inconvenient to carry and cannot be well dynamically monitored. Therefore, developing a device that is convenient to carry and can quickly measure tunnel dynamic water inflow has good application prospects for water-rich tunnel water inflow dynamic monitoring.

[0005] It should be noted that the above introduction of the technical background is only to facilitate a clear and complete description of the technical solutions of the present application and to facilitate the understanding of those skilled in the art. The above technical solutions cannot be considered as known to those skilled in the art merely because they are described in the background section of the present application. SUMMARY

[0006] The utility model aims at overcoming the insufficient of prior art, provides a water-rich tunnel water inflow dynamic monitoring device, the device can quickly measure the water inflow related parameters of tunnel borehole in different positions, can quickly calculate the water inflow according to the directly obtained water inflow related parameters, and the device can be quickly folded, opened, carried and transported more conveniently.

[0007] In order to achieve the above object, the utility model provides a kind of water-rich tunnel water inflow dynamic monitoring device, including water guide pipe, support rod, horizontal rod, the water outlet end pipe wall of water guide pipe is provided with fixed hinged axle, the first end of support rod is hinged with water guide pipe by the fixed hinged axle, the first end of support rod is also fixedly connected with angle measuring scale, to quickly measure the included angle of water guide pipe and horizontal plane, the sliding slot is opened to support rod along length direction, sliding hinged axle is slidably connected in the sliding slot, one end of horizontal rod is hinged with support rod by sliding hinged axle.

[0008] Further, the pipe wall of the water guide pipe is provided with a reading auxiliary line at the tangent of the angle measuring scale.

[0009] Further, the support rod and the horizontal rod are both provided with length standard scale.

[0010] Further, the side of the support rod is provided with a bubble level.

[0011] Further, it further includes a first adapter sleeve and a second adapter sleeve, the water inlet end of the water guide pipe is detachably connected with the first adapter sleeve or the second adapter sleeve, and the water outlet end of the water guide pipe is detachably connected with the second adapter sleeve.

[0012] Further, the first adapter sleeve is fixedly connected by a first conversion head and a second conversion head, the second adapter sleeve is fixedly connected by a third conversion head and a fourth conversion head, the inner diameter of the second conversion head and the fourth conversion head is the same as the outer diameter of the water guide pipe, the inner diameter of the first conversion head is larger than the outer diameter of the water guide pipe, and the inner diameter of the third conversion head is smaller than the inner diameter of the water guide pipe.

[0013] Further, the second conversion head and the fourth conversion head are provided with internal threads, and the water inlet end and the water outlet end of the water guide pipe are provided with external threads, and the second conversion head and the fourth conversion head are threadedly connected with the water guide pipe.

[0014] Further, the water guide pipe, the angle measuring scale, the support rod and the horizontal rod are all made of lightweight aluminum alloy material.

[0015] The above-mentioned scheme of the utility model has the following beneficial effects:

[0016] 1. The water-rich tunnel water inflow dynamic monitoring device provided by the utility model can flexibly adjust the angle of the water guide pipe when monitoring the water inflow at different positions, and the adjusted angle can be directly read through the angle measuring scale, so that the drilling water inflow monitoring at different positions in the tunnel can be quickly adapted, especially the water inflow of non-horizontal drilling which is difficult to measure. The device can be inserted into the drainage hole at different positions and angles in the tunnel to monitor the water inflow in real time, and has high flexibility, simple operation and wide application range.

[0017] 2. The device is hinged as a whole, and can be quickly folded into a long strip when not in use, which is very convenient for carrying and transporting, especially in a relatively small space such as a tunnel, thereby reducing the difficulty of carrying.

[0018] Other beneficial effects of the present application will be described in detail in the subsequent specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a schematic diagram of the overall structure of the present application;

[0020] Fig. 2 is a schematic diagram of the structure of the first conversion head of the present application;

[0021] Fig. 3 is a schematic diagram of the structure of the second conversion head of the present application.

[0022] LEGEND OF THE DRAWINGS

[0023] 1 - water guide pipe; 11 - reading auxiliary line; 2 - angle measuring scale; 3 - support rod; 4 - horizontal rod; 5 - level bubble; 6 - fixed hinge shaft; 7 - sliding hinge shaft; 8 - first adapter sleeve; 81 - first conversion head; 82 - second conversion head; 9 - second adapter sleeve; 91 - third conversion head; 92 - fourth conversion head. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application. In the specific embodiments described, various specific technical features and embodiments can be combined in any appropriate manner without contradiction, for example, different specific technical features / embodiments can be combined to form different embodiments. In order to avoid unnecessary repetition, various possible combinations of the specific technical features / embodiments in the present application are not described again.

[0025] It should be noted that the terms "arranged", "connected" should be understood broadly, for example, can be directly arranged, installed, connected, or indirectly arranged, connected through a centering component, a centering structure. In addition, the directions or position relationships of "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like in the utility model are based on the directions or position relationships shown in the drawings or the conventional placement state or use state, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or suggestive of the structures, features, devices or elements indicated having a specific direction, being constructed and operated in a specific direction, and therefore cannot be understood as limiting the utility model.

[0026] As shown in Figs. 1-3 The embodiment provides a water-rich tunnel water inflow dynamic monitoring device, which comprises a water guide pipe 1, a supporting rod 3 and a horizontal rod 4. A fixed hinge shaft 6 is arranged on the water outlet end pipe wall of the water guide pipe 1. The first end of the supporting rod 3 is hinged to the water guide pipe 1 through the fixed hinge shaft 6. The first end of the supporting rod 3 is also fixedly connected with an angle measuring scale 2, so that the included angle between the water guide pipe and the horizontal plane can be quickly measured. Specifically, a reading auxiliary line 11 is arranged at the tangent position of the pipe wall of the water guide pipe 1 and the angle measuring scale 2. The angle value indicated on the angle measuring scale 2 through the reading auxiliary line 11 can accurately obtain the included angle between the water guide pipe 1 and the horizontal plane. α α is an acute angle.

[0027] Further, a sliding groove is formed in the supporting rod 3 along the length direction. A sliding hinge shaft 7 is slidably connected in the sliding groove. One end of the horizontal rod 4 is hinged to the supporting rod 3 through the sliding hinge shaft 7. The supporting rod 3 and the horizontal rod 4 are both provided with length standard scales. The height of the horizontal rod 4 can be flexibly adjusted through the up-down sliding of the sliding hinge shaft 7. Meanwhile, a bubble level 5 is arranged on one side of the supporting rod 3. The supporting rod 3 can be quickly adjusted to be perpendicular to the horizontal plane through the bubble level 5. After the supporting rod 3 is perpendicular to the horizontal plane, the horizontal rod 4 is adjusted to be perpendicular to the supporting rod 3, that is, the horizontal rod 4 can be ensured to be parallel to the horizontal plane, so that the horizontal distance of the water inflow can be accurately measured. The water guide pipe, the angle measuring scale, the supporting rod and the horizontal rod are all made of corrosion-resistant light aluminum alloy material, and are suitable for tunnel water inflow guidance and monitoring under various complex water quality conditions, so that the long-term stable operation of the equipment can be ensured.

[0028] ​In the embodiment, the water-rich tunnel water inflow dynamic monitoring device further comprises a first adapter sleeve 8 and a second adapter sleeve 9. The first adapter sleeve 8 is fixedly connected by a first conversion head 81 and a second conversion head 82. The second conversion head 82 and the fourth conversion head 92 have the same inner diameter as the outer diameter of the water guide pipe 1. The inner diameter of the first conversion head 81 is larger than the outer diameter of the water guide pipe 1. The inner diameter of the third conversion head 91 is smaller than the inner diameter of the water guide pipe 1. The water inlet end of the water guide pipe 1 is detachably connected to the first adapter sleeve 8 or the second adapter sleeve 9. The diameter of the water inlet end of the water guide pipe 1 is increased or reduced, and different aperture water outlets can be quickly connected. When the water inflow is small, the water inflow from the water outlet end of the water guide pipe 1 is non-full pipe flow. At this time, the water outlet end of the water guide pipe 1 is detachably connected to the second adapter sleeve 9, the water outlet is reduced, and the water flow from the water outlet end is ensured to be full pipe flow, which is convenient for confirming the cross-sectional area A of the water flow.

[0029] Further, the second conversion head 82 and the fourth conversion head 92 are provided with internal threads, the water inlet end and the water outlet end of the water guide pipe 1 are provided with external threads, and the second conversion head 82 and the fourth conversion head 92 are threadedly connected to the two ends of the water guide pipe 1. Specifically, the inner diameters of the first conversion head 81 and the third conversion head 91 can be set to different specifications. According to the actual needs during water inflow measurement, the adapter sleeve with the appropriate inner diameter can be used, which is convenient and fast.

[0030] The use process and principle of the device are as follows:

[0031] The water guide pipe 1 has a fixed length, such as 1 m. On one side of the tunnel outlet, the first conversion sleeve 8 or the second conversion sleeve 9 is installed at the water inlet end of the water guide pipe 1 according to the size of the outlet aperture. The water inlet end of the water guide pipe 1 is placed at the tunnel outlet. Whether the outlet end of the water guide pipe 1 is full pipe flow is observed. If it is not full pipe flow, the second conversion sleeve 9 can be installed to ensure that the non-full pipe flow is converted into full pipe flow. The level bubble 5 is used to adjust the support rod 3 to be perpendicular to the horizontal plane. Then the horizontal rod 4 is slid to a height at which the water flow horizontal distance of the water outlet end can be measured. The horizontal rod 4 is adjusted to be perpendicular to the support rod 3. Then the angle between the reading auxiliary line 11 on the angle measuring scale 2 and the horizontal plane, the vertical distance h between the water outlet end of the water guide pipe 1 and the horizontal rod 4 shown on the support rod 3, and the horizontal distance l of the water flow oblique downward throw motion of the water outlet end of the water guide pipe 1 shown on the horizontal rod 4 are read respectively. α

[0032] In the case that the tunnel water outlet is stable flow and air resistance is ignored, the water flow motion can be regarded as similar to the projectile motion. According to the similar projectile motion formula:

[0033]

[0034] ​The initial velocity of water flow out of the drain hole is:

[0035]

[0036] Wherein: h is the vertical height of the water outlet end of the water guide pipe 1 from the horizontal rod 4, g is the acceleration of gravity, t is the motion time, l is the horizontal distance of the oblique downward throwing motion, v is the initial velocity, α is the included angle (acute angle) between the drain hole and the horizontal plane.

[0037] The water inflow is obtained as:

[0038]

[0039] Wherein, Q is the flow rate, v is the flow velocity, A is the cross-sectional area of the water outlet end of the water guide pipe, π is the circular constant, d is the diameter of the outlet end of the water guide pipe 1 or the diameter of the third conversion head 91 of the second conversion sleeve 9.

[0040] Therefore, in order to achieve the purpose of measuring the water inflow of the tunnel outlet, only the horizontal distance, the height, the diameter of the water outlet end of the water guide pipe 1 and the included angle between the water guide pipe 1 and the horizontal plane are measured, and the water inflow of the tunnel can be quickly calculated to achieve the purpose of dynamic monitoring.

[0041] When not in use, the water guide pipe 1 and the horizontal rod 4 of the device are respectively rotated and overlapped with the support rod 3, so that the device can be folded into a strip structure, facilitating transportation and carrying.

[0042] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A water-rich tunnel water inflow dynamic monitoring device, characterized in that, The utility model provides a water guide pipe, support rod, horizontal rod, the water guide pipe (1) is provided with fixed hinged shaft (6) on the pipe wall of water outlet end, the first end of support rod (3) is hinged with water guide pipe (1) through fixed hinged shaft (6), the first end of support rod (3) is also fixedly connected with angle measuring scale (2), to quickly measure the included angle of water guide pipe (1) and horizontal plane, the support rod (3) is provided with sliding slot along the length direction, sliding connection has sliding hinged shaft (7) in the sliding slot, one end of horizontal rod (4) is hinged with support rod (3) through sliding hinged shaft (7).

2. The water-rich tunnel water inflow dynamic monitoring device according to claim 1, characterized in that, The pipe wall of water guide pipe (1) is provided with reading auxiliary line (11) at the tangent of angle measuring scale (2).

3. The water-rich tunnel water inflow dynamic monitoring device according to claim 1, characterized in that, The support rod (3) and the horizontal rod (4) are both provided with length standard scale.

4. The water-rich tunnel water inflow dynamic monitoring device according to claim 1, characterized in that, The support rod (3) is provided with bubble (5) on one side.

5. The water-rich tunnel water inflow dynamic monitoring device according to claim 1, characterized in that, It also includes first adapter sleeve (8) and second adapter sleeve (9), the water inlet end of water guide pipe (1) can be detachably connected first adapter sleeve (8) or second adapter sleeve (9), the water outlet end of water guide pipe (1) can be detachably connected second adapter sleeve (9).

6. The water-rich tunnel water inflow dynamic monitoring device according to claim 5, characterized in that, The first adapter sleeve (8) is fixedly connected by first conversion head (81) and second conversion head (82), the second adapter sleeve (9) is fixedly connected by third conversion head (91) and fourth conversion head (92), the inner diameter of second conversion head (82) and fourth conversion head (92) is same with the outer diameter of water guide pipe (1), the inner diameter of first conversion head (81) is greater than the outer diameter of water guide pipe (1), the inner diameter of third conversion head (91) is less than the inner diameter of water guide pipe (1).

7. The water-rich tunnel water inflow dynamic monitoring device according to claim 6, characterized in that, Second conversion head (82) and fourth conversion head (92) are provided with internal thread, the water inlet end and the water outlet end of water guide pipe (1) are provided with external thread, second conversion head (82) and fourth conversion head (92) are connected with water guide pipe (1) by thread. 8.The water-rich tunnel water inflow dynamic monitoring device according to claim 1, characterized in that, The water guide pipe (1), angle measuring scale (2), support rod (3), horizontal rod (4) are made of light aluminum alloy material.

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