CN201071513Y

CN201071513Y - Single-hole multi-layer groundwater monitoring well

Info

Publication number: CN201071513Y
Application number: CNU2007200901906U
Authority: CN
Inventors: 卢予北; 郭友琴; 朱中道; 甄习春; 吴烨
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-28
Filing date: 2007-04-28
Publication date: 2008-06-11
Anticipated expiration: 2017-04-28

Abstract

The utility model discloses an underground water monitoring well with one hole and a plurality of layers, comprising a well wall and a plurality of monitoring pipes provided in the well wall; wherein, a water stop layer and a monitoring layer are alternatively provided in the well wall. The monitoring pipe consists of a PVC-U well pipe and a guide provided on the head end of the PVC-U well pipe. A filtering pipe and a connector are provided in the PVC-U well pipe in the monitoring layer. A serum intake hole is provided between the lower part of the connector and the guide. The serum intake hole and the guide of the head end of the PVC-U well pipe are positioned in the monitoring layer. With the adoption of the PVC-U plastic pipe as the well pipe, the utility model solves the problems of the traditional metal well pipe, such as easy corrosion, easy scale formation and easy blockage, and has the advantages of small weight, low cost, non-corrosion, non-scale formation and long service life. The depth of a complete well can reach 500m; with the design of one hole and a plurality of layers, the utility model not only can achieve the layered monitoring toward water carrying layers of a plurality of objects in the same well but also greatly lower the cost of the complete well with each monitoring well saving about hundreds of thousands yuan.

Description

One hole multilayer groundwater monitoring well

Technical field:

The utility model relates to a kind of groundwater monitoring device, specifically the multistage complete groundwater monitoring well in a hole.

Background technology:

Understand and grasp each local water level, water quality and water temperature situation of change, early warning is sent in the quality of groundwater variation of sensitive area have important economy and strategic importance.Developed countries such as Europe, the U.S., Japan are rapid in the development of groundwater monitoring technical elements, and maintain the leading position.Its construction equipment, monitoring instrument and ancillary facility are mature on the whole, and particularly adopt PVC-U plastic pipe Cheng Jing to efficiently solve corrosion and scale problems.But external monitoring holes substantially all be tens meters dark, so less in technical elements difficulty such as probing, Cheng Jing.

China is at the groundwater monitoring technical elements, still based on single hole monitoring and producing well.Its subject matter is: (1) single hole monitors into that hole number is many, floor space is big, monitoring and management inconvenience etc.; (2) all be to mix the aquifer with producing well as its water level of monitor well, water quality and water temperature etc., its index and parameter can not accurately reflect the Changing Pattern of concrete layer position; (3) Shi Gong monitor well adopts traditional handicraft and metal pipe material substantially, exists problems such as metal well casing corrosion failure, fouling obstruction, thus the application life of having reduced monitor well.In recent years; China Geological Survey Bureau hydrogeology engineering method institute and Beijing geological environment monitoring master station respectively in Baoding, Beijing constructed three layers in a hole two layers (well depth 100m) and holes (following have heavy caliber metal borehole wall protection tube), what these 2 monitor wells all adopted is metal pipe material.The PVC-U four-way monitoring pipe that wherein hydrogeological engineering method is developed can realize the hierarchical monitor in four target aquifers in same well, but designs depth capacity 150m, at present still in the experimental stage.

Summary of the invention:

Technical problem to be solved in the utility model just provides an a kind of hole multilayer groundwater monitoring well, adopt the PVC-U plastic pipe, not only prevent and avoid the burn into fouling and the blockage problem of traditional monitoring well, and realized the empty multilayer monitoring of monitor well one, the monitor well degree of depth is the darkest to reach 500 meters, and every index and requirement all reach designing requirement.

Technical solution adopted in the utility model is:

An a kind of hole multilayer groundwater monitoring well, comprise the borehole wall and be arranged on the interior a plurality of monitoring pipe of the borehole wall, have the sealing layer and the monitor layer that are arranged alternately in the borehole wall, monitoring pipe is made of well casing and the guiding that is arranged on the well casing head end, have filter pipe and joint in the well casing in the monitor layer, also have slurry-feeding hole between the bottom of joint and the guiding, slurry-feeding hole also is in the monitor layer together with the guiding of well casing head end.

Described monitoring pipe is the 1-6 layer.

The degree of depth of described monitoring pipe is a 200-500 rice.

Described well casing is the PVC-U pipe.

Described be directed to wooden coniform.

Has the seam of milling on the described filter pipe.

The described wide 0.8-1.2 millimeter of seam that mills seam, gap rate 10-15%.

Described joint is a metal joint.

The beneficial effect that the utility model can reach is:

1, adopt the PVC-U plastic pipe as well casing, problems such as perishable, the easy fouling of conventional metals well casing existence for a long time, easy obstruction have been solved, have advantages such as in light weight, that cost is low, burn into non-scaling, life-span be not long, become well depth can reach 500 meters, especially the design of a hole multilayer, can not only realize in same well, to realize the hierarchical monitor in a plurality of targets aquifer, the quantity of Cheng Jing and the number of times of maintenance and well-flushing have been significantly reduced, and the cost of Cheng Jing greatly reduces, and every hole monitor well can be saved hundreds thousand of units.

2, head end is provided with wooden coniform guiding and is convenient to well casing and is lowered to smoothly, when " mixing resistance, winding " phenomenon appears in well casing, gently changes ground line repeatedly with pipe wrench and can guarantee to be lowered to.

3, being provided with of slurry-feeding hole mainly is to guarantee that mud in time enters in the PVC-U pipe in the well, makes the pipe external and internal pressure keep balance, prevents to manage the excessive pressure reduction of inside and outside formation and well casing occurs to squeeze the accident of ruining.

4, have the filter pipe that mills seam water in the stratum is entered in the filter pipe monitor.

5, being provided with of joint one is when well casing because the well internal buoyancy is big, and be can not be normally fashionable down, is lowered to anti-wire connection head in manage with drilling rod and docks, and by force well casing is lowered to design attitude with the drilling rod own wt, waits to throw behind the gravel sealing to go out drilling rod is counter again; The 2nd, utilize this joint and drilling rod to carry out punching and dynamic circulation throwing gravel.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

The specific embodiment:

The utility model will be further described below in conjunction with accompanying drawing:

What describe among Fig. 1 is the four layers of groundwater monitoring well in a hole, this comprises the monitor well borehole wall 3 and four PVC-U monitoring pipe 1 that are arranged in the borehole wall 3, A, B, C, the monitoring degree of depth of four layers of PVC-U monitoring pipe 1 of D is respectively at 70-82m, 172-190m, 250-268m, between the 316-328m, have the sealing layer 2 and the monitor layer 4 that are arranged alternately in the borehole wall 3, monitoring pipe 1 is made of well casing 11 and the wooden coniform guiding 5 that is arranged on well casing 11 head ends, have filter pipe 12 and metal joint 13 in the well casing 11 in the monitor layer 4, has the wide 0.8-1.2 millimeter of seam on the filter pipe 12, gap rate 10-15% mills seam 15, also have slurry-feeding hole 14 between the bottom of joint 13 and the guiding 5, slurry-feeding hole 14 also is in the monitor layer 4 together with the guiding 5 of well casing 11 head ends.

The technical program is in ground successful implementations such as Zhengzhou, illustrate that the PVC-U plastic pipe uses in interior hydrological well or multilayer monitor well feasible equally at 500m, and by some technical measures and method, successfully solve go into the well difficulty and squeeze easily the problem of ruining of PVC-U plastic pipe, indicate and solved metal well casing corrosion and scaling and blockage problem in this field, thereby prolonged application life, maintenance and well-flushing number of times have been reduced, and become well simple, saved construction period, and the monitor well of every same degree of depth is economized on the use of funds surplus in the of 30 ten thousand yuan at least, possesses stronger popularizing value.The category that need to prove the utility model protection is not limited to the foregoing description, and the darker hole multilayer groundwater monitoring well of three layers in a hole, six layers in a hole and the degree of depth is still protection domain of the present utility model.

Claims

1. hole multilayer groundwater monitoring well, comprise the borehole wall (3) and be arranged on the interior a plurality of monitoring pipe (1) of the borehole wall (3), it is characterized in that: have the sealing layer (2) and the monitor layer (4) that are arranged alternately in the borehole wall (3), monitoring pipe (1) is made of well casing (11) and the guiding (5) that is arranged on well casing (11) head end, have filter pipe (12) and joint (13) in the well casing (11) in the monitor layer (4), also have slurry-feeding hole (14) between the bottom of joint (13) and the guiding (5), slurry-feeding hole (14) also is in the monitor layer (4) together with the guiding (5) of well casing (11) head end.

2. a hole multilayer groundwater monitoring well as claimed in claim 1 is characterized in that: monitoring pipe (1) is the 1-6 layer.

3. a hole multilayer groundwater monitoring well as claimed in claim 1 or 2, it is characterized in that: the degree of depth of monitoring pipe (1) is a 200-500 rice.

4. a hole multilayer groundwater monitoring well as claimed in claim 3 is characterized in that: well casing (11) is the PVC-U pipe.

5. a hole multilayer groundwater monitoring well as claimed in claim 4 is characterized in that: guiding (5) is for wooden coniform.

6. a hole multilayer groundwater monitoring well as claimed in claim 3 is characterized in that: have on the filter pipe (12) and mill seam (15).

7. a hole multilayer groundwater monitoring well as claimed in claim 6 is characterized in that: mill the wide 0.8-1.2 millimeter of seam of seam (15), gap rate 10-15%.

8. a hole multilayer groundwater monitoring well as claimed in claim 3, it is characterized in that: joint (13) is a metal joint.