Water level observation device suitable for multi-layer underground water

Abstract

The utility model discloses a water level observation device suitable for multi-layer underground water, which belongs to the technical field of engineering geological survey and comprises an upper confined water stratum, and an upper impervious stratum, a lower confined water stratum and a lower impervious stratum are sequentially arranged at the bottom of the upper confined water stratum from top to bottom. Drill holes are formed among the upper confined water stratum, the upper impervious stratum, the lower confined water stratum and the lower impervious stratum, first grouting cement is arranged at the bottoms of inner cavities of the drill holes, a galvanized header pipe is installed at the upper end of each inner cavity of each drill hole, and a galvanized floral pipe is connected to the bottom of each galvanized header pipe. According to the utility model, the galvanized header pipe, the sealing assembly, the galvanized floral tube, the first grouting cement, the drill hole and the second grouting cement are arranged in a matched manner, so that a permeable layer needing to be measured can be effectively isolated from a plurality of underground water layers and observed, and hydrological information interference of other permeable layers is avoided; the problem that the single-layer underground water level is difficult to obtain under the multi-layer underground water condition is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engineering geological survey, especially to a water level observation device suitable for multilayer groundwater. BACKGROUND

[0002] Identifying groundwater level and its dynamic change process is an important link of engineering geological survey, aiming at grasping the cause, distribution and movement law of groundwater and surface water, providing basis for reasonable exploitation and utilization of water resources, and correct design and construction of foundation and piling engineering.

[0003] The commonly used groundwater level observation method is to measure the depth of water level in the hole by putting measuring rope under the hole mouth multiple times after drilling, and then judging the groundwater level and change, which is suitable for the site with simple hydrogeological conditions, when the engineering area site has multilayer groundwater, this method can only measure the water level after mixing of multilayer groundwater, and cannot distinguish the hydrological characteristics of each layer of groundwater, based on this, we provide a water level observation device suitable for multilayer groundwater. UTILITY MODEL CONTENT

[0004] In order to improve the problem that the conventional observation device cannot be applied to the site with complex hydrological conditions, the utility model provides a water level observation device suitable for multilayer groundwater.

[0005] The utility model provides a water level observation device suitable for multilayer groundwater, adopts the following technical scheme:

[0006] A water level observation device suitable for multilayer groundwater, including upper part confined water stratum, the bottom of the upper part confined water stratum is sequentially provided with upper part impervious stratum, lower part confined water stratum and lower part impervious stratum from top to bottom, the upper part confined water stratum, upper part impervious stratum, lower part confined water stratum and lower part impervious stratum are provided with drill hole, the bottom of the drill hole inner chamber is provided with first grouting cement, the upper end of the drill hole inner chamber is installed with galvanized main pipe, the bottom of the galvanized main pipe is connected with galvanized branch pipe, one side of the galvanized main pipe close to the galvanized branch pipe is provided with sealing assembly, the drill hole inner of the sealing assembly top is provided with second grouting cement.

[0007] By adopting the technical scheme, the bottom of the lower confined water stratum is blocked by the first grouting cement, the galvanized flower pipe is connected with the galvanized pipe by penetrating the fixed nylon block, a plurality of galvanized pipes are connected in sequence until the end of the galvanized main pipe reaches the vicinity of the measured lower confined water stratum, the galvanized flower pipe enters the measured confined water section, at this time, the galvanized main pipe is sealed by the sealing assembly, then the second grouting cement is injected into the inside of the drill hole, the cement slurry stays at the upper end of the sealing assembly, after the upper and lower confined water strata are blocked by the cement, the confined water enters the inside of the galvanized main pipe through the galvanized flower pipe, by observing and monitoring the water level in the inside of the galvanized main pipe at the hole of the drill hole, the water permeable layer to be measured can be effectively isolated from the multiple underground water layers and observed, and the hydrological information interference of other water permeable layers is avoided.

[0008] Optionally, the sealing assembly comprises a fixed nylon block, the fixed nylon block is fixedly sleeved at the lower end of the outside of the galvanized main pipe, the end of the outside of the galvanized main pipe away from the fixed nylon block is slidably sleeved with a movable nylon block, the movable nylon block and the fixed nylon block are provided with an expanded kelp therebetween, and the expanded kelp is wound on the outside of the galvanized main pipe.

[0009] By adopting the technical scheme, the movable nylon block is moved downward and extrudes the expanded kelp by applying pressure to the movable nylon block, and the expanded kelp is compacted to tightly adhere to the hole wall, and the expanded kelp further tightly adheres to the hole wall to form a sealing effect after swelling when meeting water.

[0010] Optionally, the distance between the movable nylon block and the fixed nylon block is 1.5 m.

[0011] By adopting the technical scheme, the movable nylon block can have a certain moving distance, and the expanded kelp can be completely compacted by the movable nylon block.

[0012] Optionally, the galvanized main pipe is connected by a plurality of single galvanized pipes.

[0013] By adopting the technical scheme, the water level in the inside of the plurality of single galvanized pipes can be conveniently observed and monitored by the staff.

[0014] Optionally, a plurality of through holes are formed in the surface of the galvanized flower pipe.

[0015] By adopting the technical scheme, water can quickly enter the inside of the galvanized flower pipe through the plurality of through holes, and then quickly enter the inside of the galvanized main pipe, thereby improving the working efficiency of the device.

[0016] Optionally, a plurality of galvanized flower pipes are provided, the top of each of the plurality of galvanized flower pipes is connected with the bottom of each of the plurality of single galvanized pipes, and the diameter of the galvanized flower pipe is the same as that of the single galvanized pipe.

[0017] By adopting the technical scheme, the water source inside the galvanized flower pipe can enter the inside of the single galvanized pipe completely, thereby facilitating observation and monitoring by the staff.

[0018] To sum up, the utility model has at least one of the following beneficial effects:

[0019] Through the cooperation of the galvanized main pipe, the sealing assembly, the galvanized flower pipe, the first grouting cement, the drill hole and the second grouting cement, the water-permeable layer to be measured can be effectively isolated from the multiple underground water layers and observed, the hydrological information of other water-permeable layers is avoided to interfere, the problem that the single underground water level is difficult to obtain under the multiple underground water conditions is solved, the operation is convenient, and the single water level observation efficiency under the multiple underground water conditions is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0021] Figure 1 It is a sectional view structural schematic diagram of the utility model;

[0022] Figure 2 It is a nylon block pressing sealing structural schematic diagram of the utility model;

[0023] Figure 3 It is a second grouting cement plugging structural schematic diagram of the utility model.

[0024] In the drawing: 1, upper pressure water stratum; 2, galvanized main pipe; 3, movable nylon block; 4, expanded kelp; 5, upper impermeable stratum; 6, fixed nylon block; 7, galvanized flower pipe; 8, lower pressure water stratum; 9, lower impermeable stratum; 10, first grouting cement; 11, drill hole; 12, second grouting cement. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings Figures 1-3 The utility model will be further described in detail.

[0026] Please refer to the drawing in the specification Figure 1 And Figure 2The utility model provides a kind of embodiment: a water level observation device suitable for multilayer groundwater, including upper part confined water stratum 1, the bottom of upper part confined water stratum 1 is sequentially provided with upper part impervious stratum 5 from top to bottom, lower part confined water stratum 8 and lower part impervious stratum 9, upper part confined water stratum 1, upper part impervious stratum 5, lower part confined water stratum 8 and lower part impervious stratum 9 are provided with drill hole 11, the bottom of drill hole 11 inner cavity is provided with first grouting cement 10, the upper end of drill hole 11 inner cavity is installed with galvanized main pipe 2, galvanized main pipe 2 is connected by several single galvanized pipes.It is convenient for staff to observe and monitor the water level inside several single galvanized pipes.

[0027] Please refer to the drawing in the specification Figure 1 And Figure 2 The bottom of galvanized main pipe 2 is connected with galvanized flower pipe 7, and a plurality of through holes are formed in the surface of galvanized flower pipe 7.It is convenient for water to quickly enter the inside of galvanized flower pipe 7 through a plurality of through holes, and then quickly enter the inside of galvanized main pipe 2, thereby improving the working efficiency of the device.

[0028] Please refer to the drawing in the specification Figure 1 And Figure 2 The number of galvanized flower pipes 7 is set to several, the top of the plurality of galvanized flower pipes 7 is connected with the bottom of the plurality of single galvanized pipes correspondingly, and the diameter of the galvanized flower pipe 7 is the same as that of the single galvanized pipe.It ensures that the water source in the inside of galvanized flower pipe 7 can completely enter the inside of single galvanized pipe, thereby facilitating staff to observe and monitor.

[0029] Please refer to the drawing in the specification Figure 1 And Figure 2 The side of galvanized main pipe 2 close to galvanized flower pipe 7 is provided with sealing assembly, sealing assembly includes fixed nylon block 6, fixed nylon block 6 is fixedly sleeved on the lower end of the outside of galvanized main pipe 2, the end of the outside of galvanized main pipe 2 away from fixed nylon block 6 is slidably sleeved with movable nylon block 3, movable nylon block 3 and fixed nylon block 6 are provided with inflatable kelp 4, and inflatable kelp 4 is wound on the outside of galvanized main pipe 2.By applying pressure to movable nylon block 3, movable nylon block 3 moves downward and extrudes inflatable kelp 4, thereby compacting inflatable kelp 4 so that it is tightly attached to the hole wall of drill hole 11, and inflatable kelp 4 expands further to tightly attach to the hole wall to form a sealing effect after being contacted with water.

[0030] Please refer to the drawing in the specification Figure 1 And Figure 3 The distance between movable nylon block 3 and fixed nylon block 6 is 1.5 m, so that movable nylon block 3 can have a certain moving distance, thereby being able to completely compact inflatable kelp 4 through movable nylon block 3.

[0031] Working principle: in use, the first grouting cement 10 is used to block the bottom of the lower confined water stratum 8, then the fixed nylon block 6 and the movable nylon block 3 are installed at the lower end of the first galvanized pipe, the expanded kelp 4 is wound on the galvanized pipe between the fixed nylon block 6 and the movable nylon block 3, the galvanized flower pipe 7 is connected with the galvanized pipe through the fixed nylon block 6, a plurality of galvanized pipes are connected in sequence, and the plurality of galvanized pipes are connected into the galvanized main pipe 2, until the end of the galvanized main pipe 2 reaches the vicinity of the measured lower confined water stratum 8, the galvanized flower pipe 7 enters the measured confined water section, at this time, the movable nylon block 3 is pressed to move downward and extrude the expanded kelp 4, so that the expanded kelp 4 is compacted to be close to the hole wall of the drill hole 11, the expanded kelp 4 is further close to the hole wall to form a sealing effect after swelling when meeting water, then the second grouting cement 12 is injected into the inside of the drill hole 11, due to the sealing of the expanded kelp 4, the cement slurry stays on the upper end of the movable nylon block 3, after the upper confined water stratum 1 and the lower confined water stratum 8 are blocked by the cement, the confined water enters the inside of the galvanized main pipe 2 through the through hole on the galvanized flower pipe 7, the water level in the inside of the galvanized main pipe 2 is observed and monitored at the hole of the drill hole 11, the problem that the single-layer water level is difficult to obtain under the condition of multiple-layer underground water is solved, the operation is convenient, and the single-layer water level observation efficiency under the condition of multiple-layer underground water is greatly improved.

[0032] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A water level observation device suitable for a multi-layered groundwater, comprising an upper confined aquifer (1), a bottom of the upper confined aquifer (1) being sequentially provided from top to bottom with an upper impervious stratum (5), a lower confined aquifer (8), and a lower impervious stratum (9), characterized in that: The upper confined water stratum (1), upper impervious stratum (5), lower confined water stratum (8) and lower impervious stratum (9) are provided with a borehole (11), the bottom of the borehole (11) is provided with a first grouting cement (10), the upper end of the borehole (11) is provided with a galvanized main pipe (2), the bottom of the galvanized main pipe (2) is connected with a galvanized branch pipe (7), the side of the galvanized main pipe (2) close to the galvanized branch pipe (7) is provided with a sealing assembly, and the borehole (11) above the sealing assembly is provided with a second grouting cement (12).

2. The water level observation device for multi-layered groundwater according to claim 1, characterized in that: The sealing assembly comprises a fixed nylon block (6), the fixed nylon block (6) is fixedly sleeved on the lower end of the outer side of the galvanized main pipe (2), the end of the outer side of the galvanized main pipe (2) away from the fixed nylon block (6) is slidably sleeved with a movable nylon block (3), the movable nylon block (3) and the fixed nylon block (6) are provided with an expanded kelp (4) therebetween, and the expanded kelp (4) is wound on the outer side of the galvanized main pipe (2).

3. The water level observation device for multi-layered groundwater according to claim 2, characterized in that: The distance between the movable nylon block (3) and the fixed nylon block (6) is 1.5 m.

4. The water level observation device for multi-layered groundwater according to claim 1, characterized in that: The galvanized main pipe (2) is connected by a plurality of single galvanized pipes.

5. The water level observation device for multi-layered groundwater according to claim 1, characterized in that: A plurality of through holes are formed in the surface of the galvanized branch pipe (7).

6. The water level observation device for multi-layered groundwater according to claim 4, characterized in that: A plurality of galvanized branch pipes (7) are provided, the top of each of the plurality of galvanized branch pipes (7) is connected with the bottom of a single galvanized pipe in correspondence, and the diameter of the galvanized branch pipe (7) is the same as that of the single galvanized pipe.

Images