Karst tunnel gushing water measuring device

Abstract

The utility model discloses a karst tunnel gushing water measuring device, and relates to the technical field of karst tunnel water measuring equipment, the karst tunnel gushing water measuring device comprises a water collecting cover body, the water collecting cover body is a hollow structure, a drainage pipe joint is installed at the drainage end of the water collecting cover body, and a drainage hose is connected to the drainage pipe joint. A water collecting bin is installed at one end of the drainage hose, the drainage hose is used for communicating the water collecting cover body with the water collecting bin, a weir baffle for drainage is detachably connected to the side face of the water collecting bin, the water collecting cover body is matched with the arc-shaped frame and the fastening piece and can be tightly attached to the tunnel wall, and it is ensured that water flowing out of cracks is completely collected; the integrity of a measurement sample is guaranteed from the source, the right-angle triangular weir (suitable for small flow) and the rectangular weir (suitable for large flow) are used for measurement, and then the calculation result is accurate and reliable according to a calculation formula.

Description

TECHNICAL FIELD

[0001] The utility model relates to karst tunnel water measuring equipment technical field, concretely is a karst tunnel gushing water measuring device. BACKGROUND

[0002] The construction of mountain tunnel in karst area inevitably exposes karst aquifer, which causes gushing water disaster in the tunnel. It is known that the gushing water of the tunnel face in karst area is irregular in shape, and the water quantity is greatly different, and the flow monitoring equipment is not easy to arrange. How to obtain the gushing water quantity data of the tunnel face in time, accurately and conveniently is a difficult problem for engineering and technical personnel.

[0003] The existing karst tunnel gushing water quantity monitoring method or device has the following defects in the use in the karst tunnel gushing water environment:

[0004] 1. The gushing water environment is complex, usually gushing in strands or along cracks, and the water flow is scattered, so it is difficult to concentrate the water flow for more accurate measurement;

[0005] 2. The existing measuring device has poor adaptability to the tunnel environment, and it is difficult to be used for timely measurement of karst tunnel gushing water simply and quickly, which has certain safety hidden danger. INVENTION CONTENTS

[0006] The utility model aims at overcoming the defects of the prior art, and provides a karst tunnel gushing water measuring device, which solves the pain point of difficult accurate measurement of gushing water in tunnel engineering.

[0007] The utility model aims at overcoming the defects of the prior art, and provides a karst tunnel gushing water measuring device, which solves the pain point of difficult accurate measurement of gushing water in tunnel engineering.

[0008] A karst tunnel gushing water measuring device, comprising a water collecting cover body, the water collecting cover body is a hollow structure, a drain pipe joint is installed at the drain end of the water collecting cover body, a drain hose is connected to the drain pipe joint, a water collecting bin is installed at one end of the drain hose, the drain hose is used for intercommunication between the water collecting cover body and the water collecting bin, and a weir baffle for drainage is detachably connected to the side surface of the water collecting bin.

[0009] Preferably, a drain pipe joint is arranged at the connection between the water collecting cover body and the drain hose, the drain pipe joint is a reducer straight-through pipe joint, the drain pipe joint is fixedly connected with the water collecting cover body, and the drain pipe joint is connected with the drain hose through a clamp.

[0010] Preferably, an arc-shaped frame is arranged around the water collecting cover body, and a filter screen plate is installed inside the water collecting cover body.

[0011] Preferably, the water collection tank includes a bottom plate, and support frames are vertically arranged at the four corners of the bottom plate. A front baffle is installed on the front side of the support frame, a rear baffle is installed on the rear side of the support frame, a side baffle is installed on the left side of the support frame, the drainage hose is connected to the side baffle, and the weir baffle is installed on the right side of the support frame.

[0012] Preferably, the support frame has slots for accommodating corresponding baffles, and the front baffle, rear baffle, side baffle, and weir baffle are all inserted into the corresponding slots.

[0013] Preferably, the weir baffle is a right-angled triangular weir baffle or a rectangular weir baffle.

[0014] Preferably, the water collection cover has axial holes at its four corners, and fasteners are inserted into each of the axial holes.

[0015] The beneficial effects of this utility model are:

[0016] In this application, the water collection hood, in conjunction with an arc-shaped frame and fasteners, can fit tightly against the tunnel wall, ensuring that all water flowing out from the cracks is collected. This guarantees the integrity of the measurement samples from the source. Measurements are performed using right-angled triangular weirs (suitable for small flow rates) and rectangular weirs (suitable for large flow rates). Based on the calculation formula, the calculation results are accurate and reliable, yielding more precise data that far surpasses rough estimations or experience-based judgments. The filter screen inside the water collection hood effectively prevents debris such as gravel and silt from entering the measurement system, avoiding blockages in the drainage pipes and inaccurate weir head measurements. This ensures the continuity and accuracy of the data, comprehensively solving the long-standing problem of inaccurate water inflow measurement in tunnel engineering. It provides reliable data support for engineering decisions and ensures construction safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Exploded view;

[0019] In the diagram, 1. Water collection hood; 2. Arc-shaped frame; 3. Drain pipe joint; 4. Drain hose; 5. Water collection tank; 51. Front baffle; 52. Rear baffle; 53. Side baffle; 54. Support frame; 541. Slot; 55. Base plate; 6. Right-angled triangular weir baffle; 7. Rectangular weir baffle; 8. Fasteners; 9. Filter screen. Detailed Implementation

[0020] Example 1

[0021] like Figures 1-2As shown, a karst tunnel water gushing measuring device is provided, and the core working principle is that a water collecting cover completely covers the water gushing point on the tunnel wall and collects water flow, and guides the water flow to a water collecting bin with replaceable different weir plates (triangular weir or rectangular weir). The height of the water overflowing on the specific weir plate is measured, and the weir flow calculation formula is used to accurately calculate the water gushing amount. The device includes a water collecting cover 1, the water collecting cover 1 is a hollow structure, the water collecting cover completely covers the water gushing point on the tunnel wall, axial holes are formed at four corners of the water collecting cover 1, a fastener 8 is inserted into each axial hole, the fastener 8 is inserted into the cavity wall around the water gushing point through the axial hole, a drain pipe joint 3 is installed at the drainage end of the water collecting cover 1, a drain hose 4 is connected to the drain pipe joint 3, the drain hose 4 is used to guide the collected water to the water collecting bin in the measuring area, one end of the drain hose 4 is provided with the water collecting bin 5, the drain hose 4 is used for intercommunication between the water collecting cover 1 and the water collecting bin 5, a weir baffle for drainage is detachably connected to the side surface of the water collecting bin 5, the weir baffle is a right-angled triangular weir baffle 6 or a rectangular weir baffle 7, the replaceable triangular weir baffle (suitable for small flow) and the rectangular weir baffle (suitable for large flow) can cover a very wide flow measurement range;

[0022] 1. Right-angled triangular weir flow calculation formula:

[0023]

[0024] In the formula, Q is the flow, the unit is m3 / s; H is the water head height above the weir, the unit is m;

[0025] 2. Rectangular weir flow calculation formula:

[0026]

[0027]

[0028] In the formula, Q is the flow, the unit is m3 / s;

[0029] b is the weir width, the unit is m;

[0030] h is the water head above the weir, the unit is m;

[0031] p is the distance from the weir top plate to the weir top, the unit is m.

[0032] As shown, Figure 2As shown, the connection between the water collecting cover 1 and the drain hose 4 is provided with a drain pipe joint 3, which is threadedly sealed to avoid the possibility of water leakage at the root position of the water collecting cover. The drain pipe joint 3 is a reducing straight pipe joint, and is fixedly connected with the water collecting cover 1. The drain pipe joint 3 is connected with the drain hose 4 through a clamp. The drain hose is sleeved on the outer end of the drain pipe joint, and then a clamp (usually a stainless steel clamp) is used for locking and fixing. When it is necessary to move or replace the measuring point, the clamp is only loosened to pull out the hose, which is extremely simple to operate. Tightening the clamp can provide uniform circumferential pressure to ensure that the hose is tightly combined with the joint to prevent water leakage. If the sealing performance decreases, the clamp can be tightened again. The water collecting cover 1 is provided with an arc-shaped frame 2 outside, and a filter screen 9 is installed inside the water collecting cover. The filter screen in the water collecting cover can effectively intercept rocks, sand and other sundries to prevent the drain pipe and the weir from being blocked, and ensure the stable operation of the device for a long time.

[0033] As shown in Figure 2 The water collecting bin 5 includes a bottom plate 55, vertical support frames 54 are arranged at four corners of the bottom plate 55, a front baffle 51 is installed on the front side of the support frame 54, a rear baffle 52 is installed on the rear side of the support frame 54, a side baffle 53 is installed on the left side of the support frame 54, the drain hose 4 is connected to the side baffle 53, and a weir baffle is installed on the right side of the support frame 54. A clamping groove 541 for accommodating the corresponding baffle is formed in the support frame 54. The front baffle 51, the rear baffle 52, the side baffle 53 and the weir baffle are inserted into the corresponding clamping grooves 541. The slot-type baffle connection and the clamp connection ensure that the connections are more tightly connected, reduce the influence of water leakage on the measurement results, and further select to form a bolt hole on the support frame 54 and on both sides of the clamping groove 541, and install a bolt and a nut in the bolt hole to further fasten the corresponding baffle in the clamping groove 541 of the support frame 54.

Claims

1. A device for measuring water inflow in karst tunnels, characterized in that, The system includes a water collection hood (1), which is a hollow structure. A drain pipe connector (3) is installed at the drain end of the water collection hood (1). A drain hose (4) is connected to the drain pipe connector (3). A water collection chamber (5) is installed at one end of the drain hose (4). The drain hose (4) is used to communicate between the water collection hood (1) and the water collection chamber (5). A weir baffle for drainage is detachably connected to the side of the water collection chamber (5).

2. The karst tunnel water inflow measuring device according to claim 1, characterized in that, A drain pipe connector (3) is provided at the connection between the water collection cover (1) and the drain hose (4). The drain pipe connector (3) is a reducing straight pipe connector. The drain pipe connector (3) is fixedly connected to the water collection cover (1). The drain pipe connector (3) and the drain hose (4) are connected by a clamp.

3. The karst tunnel water inflow measuring device according to claim 1, characterized in that, The water collection cover (1) is surrounded by an arc-shaped frame (2), and a filter screen (9) is installed inside the water collection cover (1).

4. The karst tunnel water inflow measuring device according to claim 1, characterized in that, The water collection tank (5) includes a base plate (55), and a support frame (54) is vertically installed at the four corners of the base plate (55). A front baffle (51) is installed on the front side of the support frame (54), a rear baffle (52) is installed on the rear side of the support frame (54), a side baffle (53) is installed on the left side of the support frame (54), the drainage hose (4) is connected to the side baffle (53), and the weir baffle is installed on the right side of the support frame (54).

5. The karst tunnel water inflow measuring device according to claim 4, characterized in that, The support frame (54) is provided with a slot (541) for accommodating the corresponding baffle. The front baffle (51), rear baffle (52), side baffle (53) and weir baffle are all inserted into the corresponding slot (541).

6. A karst tunnel water inflow measuring device according to claim 5, characterized in that, The weir baffle is a right-angled triangular weir baffle (6) or a rectangular weir baffle (7).

7. The karst tunnel water inflow measuring device according to claim 4, characterized in that, The water collection cover (1) has axial holes at its four corners, and fasteners (8) are inserted into each of the axial holes.

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