CN206635813U - A kind of shallow groundwater inspection well - Google Patents

Abstract

It the utility model is related to a kind of shallow groundwater inspection well, including well casing and water level automatic temperature recorder, well casing is vertically embedded to be observedly, the upper edge of well casing is above the ground level, the upper edge of well casing is detachably connected lid, the lower end sealing of well casing, well casing is from top to bottom divided into seal section and inlet segment, uniform blasthole on the borehole wall of inlet segment, inlet segment outer cladding geotextiles, seal section outer cladding nylon wire, below the liquid level that water level automatic temperature recorder is placed in well casing by being used as the common 5 class unshielded twisted pair that data line uses, the free end of common 5 class unshielded twisted pair is lain on insulating bar through upper lid.Compared with prior art, the beneficial effects of the utility model are：Level of ground water can be effectively measured in real time, and upper lid can detect well to underground water as tree-protector and be effectively protected, and its is simple in construction, and production cost is low, is easy to promote the use of.

Description

A shallow groundwater level observation well

technical field

The utility model relates to the field of hydrology and water resources and water conservancy engineering groundwater level measurement, in particular to a shallow groundwater level observation well.

Background technique

Long-term observation of groundwater level is usually required in water conservancy project construction and hydrological experiments. Current water level observation wells often use steel pipes. Many field observation wellheads are exposed to the air and are not well combined with self-recording water level gauges. The outer wall of the steel pipe is smooth, and when the soil around the observation well changes, it is easy to cause the generation of preferential flow. The wellhead of the field observation well is exposed to the air, which will cause leaves, insects, etc. to enter the well, which may cause observation

The clogging of wells will affect the accurate observation of groundwater level.

Utility model content

The task of the utility model is to provide a shallow groundwater level observation well aiming at the deficiencies of the above current situation.

The technical scheme that the utility model takes is:

A shallow groundwater level observation well, including a well pipe and an automatic water level temperature recorder, the well pipe is buried vertically in the ground to be observed, the upper edge of the well pipe is higher than the ground, the upper edge of the well pipe is detachably connected to the upper cover, and the well pipe The lower end of the well is sealed. The well pipe is divided into a sealing section and a water inlet section from top to bottom. Water inlet holes are evenly distributed on the well wall of the water inlet section. The water inlet section is covered with geotextile and the sealing section is covered with nylon mesh. The water level and temperature are automatically controlled. The recorder is suspended below the liquid level in the well pipe through the common category 5 unshielded twisted pair used as a data transmission line, and the free end of the common category 5 unshielded twisted pair passes through the upper cover and is tied to the insulating rod.

The well pipe adopts ABS pipe, the outer diameter of the ABS pipe is 50-100mm, and the thickness is 2.0-3.0mm.

The water inlet hole is arranged near the lower cover 2-15cm, and the water inlet hole is circular, and its diameter is 3-6mm.

The water level and temperature automatic recorder is near the bottom of the well pipe.

The upper cover is a mushroom-shaped design, and a reserved hole is set on one side. The diameter of the reserved hole is suitable for the diameter of a common category 5 unshielded twisted pair. The reserved hole is suitable for installing a circular silicone plug.

The inner edge of the upper cover spans an iron frame. There is a ring in the middle of the iron frame. The round surface of the ring is kept horizontal. Silicone plugs in the holes.

Compared with the prior art, the utility model has the beneficial effects of:

First, the utility model adopts ABS plastic pipe, whose weight is 1/7 of that of steel, which reduces the weight of the pipe body, has small fluid resistance, and has a long service life when buried underground. It is more stable in chemical properties than PVC pipes, and has higher corrosion resistance. It is extremely beneficial for field hydrological experiments;

Second, the utility model offers evenly distributed circular water inlet holes at the bottom of the well pipe at 2-15cm, with an aperture of 3-6mm, and the aperture size can also be determined according to the size of the soil particles in the test area;

Third, the outer wall of the water inlet section of the utility model is wrapped with a thin layer of geotextile to prevent the water inlet hole from being blocked; the outer wall of the sealing section is wrapped with nylon mesh to prevent the outer wall of the well pipe from being too smooth to cause preferential flow.

Fourth, the pipe body of the utility model is equipped with a detachable upper cover. The upper cover is a mushroom-shaped design, which can prevent rainwater from accumulating at the wellhead. The inside of the cover is supported by an iron frame with a horizontal ring; the cover is opened on one side, The size of the opening depends on the diameter of the common category 5 unshielded twisted pair, generally 3-6mm, and the inside of the opening is equipped with a silicone plug to prevent part of the rainwater from flowing into the well and affecting the water level observation.

Fifth, the utility model has a simple structure, is easy to realize, has practical significance, and can be popularized and applied.

Description of drawings

Fig. 1 is the structural representation of shallow groundwater level observation well of the present utility model;

Figure 2 is a schematic cross-sectional view of the sealing section;

Figure 3 is a schematic cross-sectional view of the water inlet section;

Figure 4 is a schematic structural view of the upper cover;

Fig. 5 is the structural representation of silica gel stopper;

Figure 6 is a schematic diagram of the field installation of shallow groundwater level observation wells.

Among them: 1-upper cover, 2-well pipe, 3-lower cover, 4-reserved hole, 5-silica gel plug, 6-water inlet section of pipe body, 7-common category 5 unshielded twisted pair, 8-water level Automatic temperature recorder, 9-ground water level, 10-nylon mesh, 11-water inlet, 12-geotextile, 13-iron frame, 14-ground.

detailed description

The structure and operating principle of the groundwater observation well of the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

The figure includes the following structures: upper cover 1, well pipe 2, lower cover 3, reserved hole 4, silica gel plug 5, water inlet section of pipe body 6, common category 5 unshielded twisted pair wire 7, automatic water level temperature recorder 8 , underground water level 9, nylon mesh 10, water inlet hole 11, geotextile 12, iron frame 13 and ground 14.

As shown in Figure 1, a shallow groundwater level observation well includes a well pipe and an automatic water level temperature recorder. The well pipe is buried vertically in the ground to be observed, and the upper edge of the well pipe is higher than the ground, and the upper edge of the well pipe is detachable. Connect the upper cover, and the lower end of the well pipe is sealed and connected to the lower cover. The well pipe is divided into a sealing section and a water inlet section from top to bottom. The well wall of the water inlet section is evenly distributed with water inlet holes. Covered with nylon mesh, the water level and temperature automatic recorder is suspended below the liquid level in the well pipe through the ordinary category 5 unshielded twisted pair used as a data transmission line, and the free end of the ordinary category 5 unshielded twisted pair passes through the upper cover Attached to insulating rod. The geotextile can prevent soil particles and foreign matter from entering the pipe body and cause blockage, and the nylon mesh can prevent preferential flow due to its smooth outer wall and easy leakage.

The well pipe adopts ABS pipe, the outer diameter of the ABS pipe is 50-100mm, and the thickness is 2.0-3.0mm.

The water inlet hole is arranged near the lower cover 2-15cm, and the water inlet hole is circular, and its diameter is 3-6mm.

The water level and temperature automatic recorder is near the bottom of the well pipe.

The upper cover is a mushroom-shaped design, and a reserved hole is set on one side. The diameter of the reserved hole is suitable for the diameter of a common category 5 unshielded twisted pair. The reserved hole is suitable for installing a circular silicone plug.

The inner edge of the upper cover spans an iron frame. There is a ring in the middle of the iron frame. The round surface of the ring is kept horizontal. Silicone plugs in the holes.

Example

The installation and working methods of the groundwater observation well described in the utility model are as follows: the circular water inlet hole 11 is wrapped with a thin layer of geotextile 12, and the rest of the outer wall of the well pipe is covered with a layer of nylon mesh 10, which are respectively fixed, and the groundwater can pass through the water inlet hole. Enter the well, and then measure the groundwater level; the common category 5 unshielded twisted pair 7 is tied to the bottom of the automatic water level temperature recorder 8, the twisted pair 7 passes through the round hole on the iron frame 13 successively, the silicone plug 5 and the upper cover Reserve a hole 4, and tie it to an insulating rod, place it in the opening on the right side, place the automatic water level temperature recorder 8 in the well, and place the detachable upper cover 1 at the well head, wherein the arc of the detachable upper cover 1 The design and the silicone plug 5 can prevent rainwater from flowing into the well, causing inaccurate groundwater level measurement. The utility model provides effective guarantee for the observation of the groundwater level.

Claims (6)

1. A shallow groundwater level observation well, characterized in that: comprise a well pipe and an automatic water level temperature recorder, the well pipe is vertically buried in the ground to be observed, the upper edge of the well pipe is higher than the ground, and the upper edge of the well pipe is detachable The upper cover is connected, and the lower end of the well pipe is sealed. The well pipe is divided into a sealing section and a water inlet section from top to bottom. Water inlet holes are evenly distributed on the well wall of the water inlet section. The water inlet section is covered with geotextile, and the sealing section is covered with Nylon mesh, the water level and temperature automatic recorder is suspended below the liquid level in the well pipe through the common category 5 unshielded twisted pair used as a data transmission line, and the free end of the common category 5 unshielded twisted pair passes through the upper cover and is tied to the insulation on stick. 2. The shallow groundwater level observation well according to claim 1, characterized in that: the well pipe is an ABS pipe, the outer diameter of the ABS pipe is 50-100mm, and the thickness is 2.0-3.0mm. 3. The shallow groundwater level observation well according to claim 1, characterized in that: the water inlet hole is arranged close to the lower cover by 2-15cm, and the water inlet hole is circular with a diameter of 3-6mm. 4. The shallow groundwater level observation well according to claim 1, characterized in that: the automatic water level temperature recorder is close to the bottom of the well pipe. 5. The shallow groundwater level observation well according to claim 1, characterized in that: the upper cover is a mushroom-shaped design, and a reserved hole is set on one side, and the diameter of the reserved hole is the same as that of an ordinary category 5 unshielded twisted pair. The diameter is suitable, and the reserved hole is suitable for installing a circular silicone plug. 6. The shallow groundwater level observation well according to claim 5, characterized in that: the inner edge of the upper cover spans an iron frame, the middle part of the iron frame is provided with a circular ring, and the circular surface of the circular ring is kept horizontal, which is a common category 5 The free end of the unshielded twisted pair passes through the ring on the iron frame and the silicone plug at the reserved hole in turn.