CN211285810U

CN211285810U - Repairing device for underground water artificial recharge deep well

Info

Publication number: CN211285810U
Application number: CN201921650908.1U
Authority: CN
Inventors: 杨天亮; 严学新; 林金鑫; 吴建中; 黄鑫磊; 陈明忠; 周勇前; 朱晓强; 胡海涛; 尹雄; 施乐亦
Original assignee: Anhui Geotechnical Drilling Engineering Co ltd; SHANGHAI INSTITUTE OF GEOLOGICAL PROSPECTING TECHNOLOGY; SHANGHAI INSTITUTE OF GEOLOGICAL SURVEY
Current assignee: Anhui Geotechnical Drilling Engineering Co ltd; SHANGHAI INSTITUTE OF GEOLOGICAL PROSPECTING TECHNOLOGY; SHANGHAI INSTITUTE OF GEOLOGICAL SURVEY
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-08-18
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to a technical field is maintained to the prevention and cure facility that subsides on ground, especially relates to a prosthetic devices that is used for artifical recharge deep well of groundwater, its characterized in that: the water filter pipe comprises a water filter pipe and a guide pipe, wherein the water filter pipe is fixed on a round tray welded on the periphery of the top of a guide pipe body, and a small-caliber joint used for being connected with a drill rod is arranged on the guide pipe. The utility model has the advantages that: the drill rod, the drilling tool and the like are convenient to go up and down and are not easy to block; the short pipe and the filter pipe are convenient to put down, the wooden guide plug is convenient to crush in subsequent treatment, and the original filter pipe at the lower part of the fault can still continuously play a role; the device is convenient to put down and can be conveniently taken out after being put in place by means of the force of the drill rod; residual leaked sand can be prevented from entering the well pipe, and the function of communicating the water channel can be continuously exerted; the water-swellable material combined with the tray can effectively block the sand leakage problem caused by dislocation or fracture of the underground water artificial recharge deep well.

Description

Repairing device for underground water artificial recharge deep well

Technical Field

The utility model relates to a technical field is maintained to the prevention and cure facility that subsides on ground, especially relates to a prosthetic devices that is used for artifical recharge deep well of groundwater.

Background

Ground settlement influences urban safety and sustainable development, artificial recharge of underground water is an important measure for preventing and treating ground settlement, and the artificial recharge is applied in cities such as Shanghai and the like on a large scale. The artificial recharge of the underground water is mainly realized by recharging a deep well, and the well depth can exceed 300 m. The phenomenon that the groundwater manual recharge deep well is blocked and the like can occur in the long-term operation process, and the recharge efficiency is continuously reduced when the groundwater manual recharge deep well is seriously blocked; the permeability of the filter and the aquifer is reduced, and the breeding and propagation of microorganisms and water quality pollution are caused; well, pump pipe corrosion, filter mesh rupture, sand production, and the like.

At present, aiming at the physical blockage of underground water artificial recharge deep wells, a raising treatment method is mainly adopted:

(1) when the recharging well is slightly physically blocked and the structural strength of the filter is high, a vacuum pumping method is adopted, namely before pumping, the water inlet valve, the backflow valve and the air release valve are closed, the electronic control valve and the electronic water pumping valve are opened, and then the pump is started to pump back.

(2) When the recharging well is slightly physically blocked and the filter structure has medium strength, a suction and lifting method is adopted, namely before lifting, the water inlet valve and the backflow valve are closed, the electronic control valve, the electronic lifting valve and the air release valve are opened, and then the pump is started to lift.

(3) When the recharging well is slightly physically blocked and the structural strength of the filter is poor or water break and sand production phenomena occur, a backflow lifting method is adopted, namely before lifting, the water inlet valve and the air release valve are closed, the electronic control valve, the backflow valve and the electronic water lifting valve are opened, and then the pump is started to lift.

(4) When the recharging well is seriously and physically blocked and the structural strength of the filter is poor, a method of pumping back and stopping the pump intermittently is adopted, namely before pumping back, the water inlet valve and the backflow valve are closed, the electronic control valve, the electronic pumping valve and the air release valve are opened, and then the pump is started to pump back. After the water is clear, intermittent pumping and pump stopping are adopted every 3-5 minutes.

(5) When the recharging well is seriously physically blocked and has a backflow pipe device, a vacuum pumping and intermittent backflow backflushing method is adopted, namely before pumping, a water inlet valve, a backflow valve and an air release valve are closed, an electronic control valve and an electronic water pumping valve are opened, and then a pump is started to pump back. After the water is clear, the reflux valve is opened and closed every 5-10 minutes.

(6) When the recharge well is seriously and physically blocked and has better structural strength of a pressurizing device and a filter, a raising and pressurizing recharge backflushing method is adopted, namely before raising, a water inlet valve and a backflow valve are closed, an electronic control valve, an air release valve and an electronic water raising valve are opened, and then a pump is started to raise. After the water is clear, the pump is stopped, the electronic control valve and the electronic water lifting valve are immediately closed, the foot water inlet valve is opened, the electronic control valve is slowly opened, water is filled from the pump pipe, and after the air is discharged from the air release valve and overflows, the air release valve is closed. The time for pumping water, stopping pumping and pressurizing and filling water is controlled to be 15 minutes, 5 minutes and 30 minutes respectively.

The pumping-back is an effective method for treating the physical blockage of the underground water manual recharge deep well, but when the well pipe of the recharge well has the problems of fracture or dislocation and the like, the pumping-back can not solve the problem, and an effective treatment technology aiming at the problems does not exist at present.

Disclosure of Invention

The utility model aims at providing a prosthetic devices for artifical recharge deep well of groundwater according to above-mentioned prior art not enough, through the cooperation of strainer and stand pipe, both solved the hourglass sand problem that the trouble leads to, ensure the recharge ability of groundwater recharge well again.

The utility model discloses the purpose is realized accomplishing by following technical scheme:

the utility model provides a prosthetic devices that is used for artifical recharge deep well of groundwater which characterized in that: the water filter pipe comprises a water filter pipe and a guide pipe, wherein the water filter pipe is fixed on a round tray welded on the periphery of the top of a guide pipe body, and a small-caliber joint used for being connected with a drill rod is arranged on the guide pipe.

The main body of the guide pipe is a short pipe, a reverse nut is processed at the upper part of the short pipe, and the round tray is welded on the periphery of the reverse nut; and a guide wooden plug is embedded at the bottom of the short pipe.

And a reverse-thread part is processed at the top of the short pipe, and the small-caliber joint is arranged at the top of the reverse-thread part.

The bottom of the round tray is in an outer horn shape.

The bottom of the round tray is wound with a water-swelling material layer.

The utility model has the advantages that: (1) the sediment is fished above the fault section of the underground water manual recharge deep well, so that not only can the space be cleared for the downward placement of the treatment device, but also the basis is provided for the judgment of the fault position; (2) the bottom of the guide pipe round tray is slightly flared, so that the drill rod, the drilling tool and the like can be conveniently and easily blocked; (3) the wood guide plug is convenient for crushing in subsequent treatment, and ensures that the original water filter pipe at the lower part of the fault can still continuously play a role; (4) the reverse-thread 'brain bag' connected with the short pipe is designed, so that the device can be conveniently taken out after being placed in place by means of the force of the drill rod when the device is put down; (5) the strainer on the upper part of the device can prevent residual sand from entering the well pipe and can also continue to play the role of communicating the water channel; (6) the water-swellable material combined with the tray can effectively block the sand leakage problem caused by dislocation or fracture of the underground water artificial recharge deep well.

Drawings

FIG. 1 is a schematic view of the structure of the device of the present invention;

FIG. 2 is a schematic structural view of the guide tube of the present invention;

fig. 3 is a schematic structural diagram of a fault section of the deep well for groundwater artificial recharge after fault maintenance.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-3, the symbols 1-11 in the figures are respectively expressed as: the water filter comprises a water filter pipe 1, a guide pipe 2, a round tray 3, a small-caliber joint 4, a reverse thread part 5, a reverse thread female buckle 6, a water-swelling material layer 7, a guide wooden plug 8, a well pipe 9, a dislocation judgment part 10 and a short pipe 11.

Example (b): as shown in fig. 1, the deep well fault treatment device for artificial groundwater recharge in the embodiment mainly includes two parts, an upper strainer 1 and a lower guide tube 2, wherein the strainer 1 has a filtering function, and the guide tube 2 has a function of guiding the device so as to be installed at a fault position of a deep well for artificial groundwater recharge and performing fault plugging. The actual length of the filter pipe 1 is determined according to the length and the fault position of the original filter pipe of the underground water artificial recharge deep well. The bottom of the filter pipe 1 is fixed on the round tray 3 of the guide pipe 2.

Referring to fig. 2 and 3, the guiding pipe 2 has a short pipe 11 as a main body, and a guiding wooden plug 8 is embedded at the bottom; the top of the short pipe 11 is provided with a reverse female thread 6, the outside is welded with a round tray 3, and the bottom of the round tray 3 is slightly shaped like an outer horn, so that the drill can be conveniently lifted and lowered. The bottom of the round tray 3 is wound with a water-swelling material layer 7, and the water-swelling material layer 7 is used for plugging the fault position of the underground water artificial recharge deep well. The top of the short pipe 11 is additionally provided with a reverse thread part 5. The top of the reverse thread part 5 is provided with a small-caliber joint 4 used for connecting a drill rod.

Due to the breakage or dislocation of the water filter pipes in the well pipe 9, quartz sand outside the pipe can continuously flow into the pipe. And (3) putting the powder taking drilling tool into the inlet section of the underground water manual recharge deep well where the filter pipe is located, pumping water by using a slurry pump to salvage sediments, and after several times of salvage, judging the position of the fault position when the sediments in the pipe are not reduced any more, namely the fracture or dislocation of the filter pipe, namely the judgment dislocation 10 shown in figure 3.

And the fault processing device is connected with the positive wire drill rod through the small-caliber joint 4 at the top of the negative wire part 5. And (4) using the drill rod to lower the fault processing device into the fault position. At this time, the circular tray 3 is located at the top of the fault section in the well.

The reverse thread part 5 is returned out of the drill, an alloy drilling tool (with a powder taking pipe) is put into the drill, the guide wood plug 8 is swept, and the sediment in the well is fished out to the bottom of the well by pumping water by using slurry. At the moment, the water filter pipe 1 at the upper part of the fault treatment device ensures the flow of underground water at the upper part and can isolate residual sand leakage at the shallow part; the round tray 3 is combined with the water-swellable material layer 7, so that sand leakage can be effectively prevented; the short pipe 11 communicated with the lower part can ensure that the recharge water can be recharged through the original strainer pipe below the fault processing device.

In the embodiment, in specific application:

in the fault remediation of the deep artificial recharging well of the certain groundwater in the open sea, the small-bore joint 4 of the hot land 65mm, the hot part 5 of the hot land 194mm, the hot land 280 x 5mm circular pallet 3 and the seamless steel pipe of the hot land 194 x 6mm are adopted as the main bodies of the lower guide pipe 2 of the device. The lower part of the round tray 3 is wound with the water-swelling material and tightened, the top of the round tray 3 is made into an outer bell mouth, and the small-caliber connector 4 can be connected with a 50mm drill rod on the hot silk. Through measurement, the treatment device falls into a predicted position, the tray is positioned at the 199.97 m deep well depth (the judgment dislocation position) of the underground water artificial recharge deep well, and the top of the filter pipe 1 is positioned at 192.93 m.

Aiming at the specific construction, firstly adopting a powder taking drilling tool with 168mm wide brans, lowering the brans to 194m, pumping water by using a slurry pump to salvage sediments, after several times of salvage, no reducing the sediments in the pipe to 198 m, judging that quartz sand outside the pipe at the fault position continuously flows into the pipe, and stopping salvaging the sediments. The water filter pipe 1 of brava 245mm is welded fast to the main part stub 11 of the guide pipe 2 of brava 194mm using the expected position of the drill pipe of brava 50 in the manhole. The power taking pipe is matched with 168mm and is put into the well to repeatedly salvage the sediments. After the slag fishing is finished, the submersible pump for 80 meters is put into the interior for trying to pump water, the water level is stable, and the water yield reaches 90 meters during the year of thin year.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a prosthetic devices that is used for artifical recharge deep well of groundwater which characterized in that: the water filter pipe comprises a water filter pipe and a guide pipe, wherein the water filter pipe is fixed on a round tray welded on the periphery of the top of a guide pipe body, and a small-caliber joint used for being connected with a drill rod is arranged on the guide pipe.

2. The repairing device for the underground water artificial recharge deep well according to claim 1, characterized in that: the main body of the guide pipe is a short pipe, a reverse nut is processed at the upper part of the short pipe, and the round tray is welded on the periphery of the reverse nut; and a guide wooden plug is embedded at the bottom of the short pipe.

3. The repairing device for the underground water artificial recharge deep well according to claim 2, characterized in that: and a reverse-thread part is processed at the top of the short pipe, and the small-caliber joint is arranged at the top of the reverse-thread part.

4. The repairing device for the underground water artificial recharge deep well according to claim 2, characterized in that: the bottom of the round tray is in an outer horn shape.

5. The repairing device for the underground water artificial recharge deep well according to claim 2, characterized in that: the bottom of the round tray is wound with a water-swelling material layer.