CN219490934U - Can effectively prevent foundation ditch recharging well of jam - Google Patents

Abstract

The utility model discloses a foundation pit recharging well capable of effectively preventing blockage, which belongs to the technical field of building construction and comprises a valve pipe and a water injection structure arranged in the valve pipe, wherein a one-way valve is arranged on the side wall of the valve pipe, and the water injection structure recharges a geological soil layer through the one-way valve. The water injection structure comprises a water injection core pipe axially arranged along the valve pipe, an upper sealing ring and a lower sealing ring which are fixed on the water injection core pipe, wherein the water injection core pipe is provided with a water injection hole, the upper sealing ring and the lower sealing ring are used for sealing a separation area between the water injection core pipe and the inner wall of the valve pipe, and the water injection hole is arranged between the upper sealing ring and the lower sealing ring. The structure of the utility model can effectively prevent the recharging well from being blocked, improves the water permeability of the recharging well, and ensures the recharging water quantity to be continuous and stable.

Description

Can effectively prevent foundation ditch recharging well of jam

Technical Field

The utility model belongs to the technical field of building construction, and particularly relates to a foundation pit recharging well capable of effectively preventing blockage.

Background

During foundation pit construction, due to various reasons such as poor underground water level around the foundation pit, the pore water pressure among surrounding soil layers is reduced, the effective stress among soil particles is increased, the stratum is unevenly settled, and the adjacent buildings are caused to be settled or cracked. At present, a recharging technology is adopted to control the groundwater level to drop, so that the method is economical, simple, convenient and feasible, and firstly, groundwater resources are supplemented; secondly, in order to stabilize the ground water level. The recharging is to inject the surface water into the target layer through a certain measure such as pipe well injection, and maintain the dynamic balance between the recharging water quantity and the seepage water quantity, thereby keeping the groundwater level in an equilibrium state.

The purpose of recharging is to deliver recharge water into the ground as much as possible and economically, but various blocking phenomena occur during recharging as recharging time continues due to recharge water quality and formation conditions, resulting in a decrease in recharge volume per unit time. The publication No. CN217923871U discloses a foundation pit recharging well, which comprises a well body, a recharging pipe and a water supply pipe, wherein a filter material layer is arranged between the outer wall of the recharging pipe and the inner wall of the well body, and can filter impurities in the well body, so that the possibility of blocking pores of an underground aquifer by the impurities is reduced; in addition, the water-proof layer is arranged above the filter material layer, so that the water-proof effect of the recharging well is improved. The method can reduce the blockage of the inner side wall of the recharging well, but the bottom of the well is easy to block, and the filtering layer of the side wall of the well is gradually blocked, so that the recharging well has poor working effect and even stops working. Although the current pumping and lifting mode pumps the blockage in drainage in the recharging well, the proper pumping times and time are mastered to obtain good recharging effect. At present, no effective control mode is available for the back-lifting, and the phenomena of more time occupation, less back-lifting and even no back-lifting of the back-lifting can occur, so that a pipe well and an aquifer are blocked.

Disclosure of Invention

Therefore, the utility model aims to provide the foundation pit recharging well capable of effectively preventing blockage, effectively preventing the recharging well from being blocked, improving the water permeability of the recharging well and ensuring the recharging water quantity to be continuous and stable.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model discloses a foundation pit recharging well capable of effectively preventing blockage, which comprises a valve pipe and a water injection structure arranged in the valve pipe, wherein a one-way valve is arranged on the side wall of the valve pipe, and the water injection structure recharges a geological soil layer through the one-way valve.

Further, the water injection structure comprises a water injection core pipe axially arranged along the valve pipe, an upper sealing ring and a lower sealing ring which are fixed on the water injection core pipe, wherein the water injection core pipe is provided with a water injection hole, the upper sealing ring and the lower sealing ring are used for sealing a separation area between the water injection core pipe and the inner wall of the valve pipe, and the water injection hole is arranged between the upper sealing ring and the lower sealing ring.

Further, the skirt of the upper seal ring is downward, and the skirt of the lower seal ring is upward.

Further, the upper end of the water injection core pipe is provided with scales.

Further, the valve tube is formed by connecting a plurality of single-section valve tubes end to end.

Further, a plurality of groups of one-way valves are arranged on the valve pipe along the axial direction of the valve pipe, so that the stratum with different depths at the same recharging position can be recharged.

Further, a locating plate is arranged at the wellhead position of the valve pipe, and a fixing clamp for fixing the water injection core pipe is arranged on the locating plate.

The utility model has the beneficial effects that:

1. the structure of the utility model reduces the construction flow of the water filtering layer of the recharging well, optimizes the construction process, effectively avoids the problem of blockage of the recharging well through the arrangement of the one-way valve, prolongs the service life of the recharging well, and has higher recharging efficiency.

2. According to the structure, the water injection core pipe is arranged, so that the water-bearing layers under the stratum with different depths at the same recharging position can be recharged flexibly according to design requirements, and the recharging action is more accurate.

3. Compared with the traditional recharging well, the structure avoids the labor force and time loss generated by the recharging, has higher efficiency of well flushing, improves the working efficiency, and ensures the recharging water amount to be stable continuously.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

In order to make the objects, technical solutions and advantageous effects of the present utility model more clear, the present utility model provides the following drawings for description:

FIG. 1 is a schematic diagram of a recharging well structure according to the present utility model;

FIG. 2 is a schematic view of a locating plate according to the present utility model;

FIG. 3 is a schematic diagram of the mechanism of recharging wells according to the present utility model.

The figures are marked as follows: an upper sealing ring 1, a one-way valve 2, a valve pipe 3, a water injection hole 4, a water injection core pipe 5, a positioning plate 6, a fixing clamp 601 and a lower sealing ring 7.

Detailed Description

As shown in fig. 1-2, the foundation pit recharging well capable of effectively preventing blockage comprises a valve pipe 3 and a water injection structure arranged in the valve pipe 3, wherein a one-way valve 2 is arranged on the side wall of the valve pipe 3, and the water injection structure recharges a geological soil layer through the one-way valve 2. The check valves 2 are symmetrically arranged along the circumference of the well wall in the horizontal direction. The longitudinal arrangement quantity and the positions are arranged according to the design requirement, the valve tube 3 is a plastic valve tube, and the material is plastic made of calcium plastic polypropylene. The recharging pipe well penetrates into the aquifer, tap water is injected into the water injection pipe 5, and flows into the geological aquifer through the recharging well wall, so that the water level in the geological aquifer is increased, and effective recharging is realized. This structure can in time effectively desilting, avoids the pipe well to block up, and can carry out the recharging to the different degree of depth stratum of same recharging position, has guaranteed that the recharging water yield is continuous stable, has improved recharging efficiency.

In the embodiment, the one-way valve 2 adopts a rubber one-way valve, the rubber sleeve covers the grouting hole according to the measured burst pressure of 5MPa, the one-way flow of the recharging water can be ensured, the rubber one-way valve is arranged on the valve pipe 3, the valve port is a water outlet position, and the water outlet is arranged on the valve pipe 3. The adoption of the one-way valve 2 can ensure that tap water is only sprayed out of the valve pipe 3, prevent tap water from flowing back into the valve pipe 3, and create conditions for secondary and even repeated water injection. And also plays a certain role in stabilizing soil.

In this embodiment, the water injection structure includes a water injection core tube 5 axially arranged along the valve tube 3, an upper seal ring 1 and a lower seal ring 7 fixed on the water injection core tube 5, a water injection hole 4 is formed in the water injection core tube 5, the upper seal ring 1 and the lower seal ring 7 are used for sealing a separation region between the water injection core tube 5 and the inner wall of the valve tube 3, and the water injection hole 4 is arranged between the upper seal ring 1 and the lower seal ring 7.

In this embodiment, the skirt of the upper seal ring 1 is downward, the skirt of the lower seal ring 7 is upward, and grease should be smeared on the skirt. Before the sealing ring of the water injection core pipe 5 is used, the sealing ring should be inspected, and no defect and a large number of bubbles should be generated.

In this embodiment, the upper end of the filler pipe 5 is provided with graduations to indicate the relative position of the filler pipe 5.

In this embodiment, the valve tube 3 is formed by connecting a plurality of single-joint valve tubes end to end. The inner wall of the single-section valve pipe is smooth, the joint is provided with a screw buckle, the end part of the single-section valve pipe is provided with an inclined opening, and the joint part is smooth when the single-section valve pipe is connected end to end, so that the grouting core pipe can conveniently move up and down in the pipe without resistance. The outer wall of the box body is provided with reinforcing ribs, so that the bending resistance is improved. During construction, each section of the plastic valve pipe should be inspected, and the pipe orifice is required to be flat and has no shrinkage and the inner wall is required to be smooth. Every 6 sections of plastic valve pipes are butted into a length of 2m in advance for standby. In preparation for insertion into the hole, each thread must be screwed down.

In this embodiment, multiple groups of check valves 2 are arranged on the valve tube 3 along the axial direction of the valve tube 3, so that the formations with different depths at the same recharging position can be recharged. The quantity of water injection holes 4 on the water injection core pipe 5 is determined according to the water quantity required by the rising of the underground water level, and the quantity of valve ports is also determined according to the quantity, so that the recharging efficiency can be greatly improved on the premise of reasonable arrangement, and the influence of foundation pit construction on the surrounding environment is reduced to the minimum.

In this embodiment, the wellhead position of the valve tube 3 is provided with the locating plate 6, and the locating plate 6 is provided with the mounting fixture 601 that is used for fixing the water injection core tube 5, plays the effect of fixed water injection core tube 5, can be convenient for install and fix.

FIG. 3 is a schematic diagram of the mechanism of action of the recharging well in the present utility model, when the structure of the present utility model is in use, firstly, the position of the water injection port is determined according to the position of the recharging stratum, and the recharging well pipe is prefabricated in the factory in advance. Firstly, the recharging position is positioned and installed, drilling holes are formed by adopting a drilling machine slurry protection wall in a rotary drilling mode, a positioning plate 6 is installed at a wellhead after the holes are formed, well pipes are arranged and combined in advance according to the designed well depth, a water injection core pipe 5 is placed down after the holes are fixed, the water injection core pipe 5 is placed down to a designated position according to the upper scales of the water injection core pipe 5, the water injection core pipe 5 is fixed through a fixing clamp 601 on the positioning plate 6, recharging well construction is completed at the moment, pump test pumping can be carried out, and the success of test pumping represents that well completion of the well can be achieved, and the recharging well can be put into use. Tap water flows out from the water injection port during recharging well operation, flows out into the surrounding soil layer through the upper valve port of the valve pipe 3, and supplements water to raise the underground water level. If the multi-section aquifer stratum is required to be accurately recharged, the position of the water injection core pipe 5 can be adjusted, and targeted accurate water supplementing is performed.

The well pipe is lowered, a well bracket is required to be built, the well pipe is fixed by matching with the pipe clamp, and a stop block is welded above the position of the well pipe where the clamping opening is placed so as to prevent the well pipe from sliding into the hole during pipe lowering. The water injection core pipe 5 can be cleaned according to actual conditions, sand and stones in the sand layer are prevented from gradually entering the water injection core pipe 5 to accumulate to block the water injection port under long-term work of the recharging well. Generally, the cleaning can be performed once a half a year under the high-density recharging operation. When the water injection core pipe 5 is cleaned, the water injection core pipe 5 is pulled out firstly, the core pipe is pumped and cleaned, and the water injection core pipe is put down to a working position after the water injection core pipe is cleaned, so that the cleaning work is completed. In the process of core pulling and well flushing or position adjusting, the water injection core pipe 5 should slightly lift the well pipe, and the well pipe is strictly forbidden to be lifted by a strong force, so that the well pipe is prevented from being damaged and the well wall is prevented from being damaged. When the water-saving type water-bearing well is used, the well mouth and the pipeline are sealed, so that the phenomenon that air is filled into an aquifer along with water to cause gas phase blockage in the recharging process is avoided, and the recharging is damaged. Preferably, a flow meter is installed at the recharging wellhead, and the recharging well flow rate and water level are observed every 1 hour.

Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the utility model, and that, although the utility model has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.

Claims (7)

1. Can effectively prevent foundation ditch recharging well of jam, its characterized in that: the device comprises a valve pipe and a water injection structure arranged in the valve pipe, wherein a one-way valve is arranged on the side wall of the valve pipe, and the water injection structure is used for recharging a geological soil layer through the one-way valve.

2. The foundation pit recharging well capable of effectively preventing blockage according to claim 1, wherein: the water injection structure comprises a water injection core pipe axially arranged along the valve pipe, an upper sealing ring and a lower sealing ring which are fixed on the water injection core pipe, wherein the water injection core pipe is provided with a water injection hole, the upper sealing ring and the lower sealing ring are used for sealing a separation area between the water injection core pipe and the inner wall of the valve pipe, and the water injection hole is arranged between the upper sealing ring and the lower sealing ring.

3. The foundation pit recharging well capable of effectively preventing blockage according to claim 2, wherein: the skirt edge of the upper sealing ring is downward, and the skirt edge of the lower sealing ring is upward.

4. A pit recharging well capable of effectively preventing plugging as in claim 3, wherein: the upper end of the water injection core pipe is provided with scales.

5. The foundation pit recharging well capable of effectively preventing blockage according to claim 1, wherein: the valve pipe is formed by connecting a plurality of single-section valve pipes end to end.

6. The foundation pit recharging well capable of effectively preventing blockage according to claim 2, wherein: and a plurality of groups of one-way valves are arranged on the valve pipe along the axial direction of the valve pipe, so that the stratum with different depths at the same recharging position can be recharged.

7. A pit recharging well capable of effectively preventing plugging according to any one of claims 2-6, wherein: the well head position of valve pipe is provided with the locating plate, be provided with the mounting fixture that is used for carrying out the fixed to the water injection core pipe on the locating plate.