CN110596321A - Modular soil gas monitoring well - Google Patents
Modular soil gas monitoring well Download PDFInfo
- Publication number
- CN110596321A CN110596321A CN201910924710.6A CN201910924710A CN110596321A CN 110596321 A CN110596321 A CN 110596321A CN 201910924710 A CN201910924710 A CN 201910924710A CN 110596321 A CN110596321 A CN 110596321A
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- well
- pipe
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- layer
- sampling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 239000002680 soil gas Substances 0.000 title claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 67
- 238000005070 sampling Methods 0.000 claims abstract description 60
- 239000000523 sample Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 27
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 21
- 239000000440 bentonite Substances 0.000 claims abstract description 21
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011083 cement mortar Substances 0.000 claims description 7
- 238000010276 construction Methods 0.000 description 9
- 239000002002 slurry Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Remote Sensing (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a modular soil gas monitoring well which comprises a well cover, a top layer connecting well pipe, a bottom layer sampling well pipe, a drill bit, a first gas sampling probe, a first gas conduit and a ground support pipe, wherein the top layer connecting well pipe is connected with the top layer connecting well pipe; the top layer connecting well pipe, the bottom layer sampling well pipe and the drill bit are detachably and fixedly connected in sequence from top to bottom; a first dry bentonite layer and a first filter material layer are sequentially filled in the bottom sampling well pipe from top to bottom, and a first air inlet is formed in the pipe wall corresponding to the first filter material layer; the first gas sampling probe is arranged in the first filter material layer; the bottom end of the first gas guide pipe is connected with the first gas sampling probe, and the top end of the first gas guide pipe extends into the ground supporting pipe. The soil gas monitoring well solves the problems that the soil gas monitoring well in the prior art is large in size and fixed in length, realizes the monitoring well which can be used repeatedly, and saves resources.
Description
Technical Field
The invention relates to a modular soil gas monitoring well.
Background
Compared with water and gas, soil is a complex environment medium consisting of three media of solid, liquid and gas, most of the current researches on soil are solid and liquid researches, and the gas in the soil is reported. In the investigation and risk assessment of volatile organic compounds in contaminated sites (DB 11/T1278-.
The current soil gas collecting equipment is provided with a probe type sampler, which is a metal rod with a guide pipe in the middle and can be smashed into the soil of a gas sampling point by using a tool, but the volume of the guide pipe is small, so that the guide pipe is easily blocked by vacuum or pore water, and the collected gas amount is insufficient. In engineering, the soil gas sampling well is constructed, and the well construction method comprises the steps of firstly arranging a steel wall protection pipe, then filling filler according to requirements, installing a probe, and completing the construction of the soil gas monitoring well, wherein the steel wall protection pipe needs to be pulled out after the completion of the construction. The steel wall protection pipe is large in size, fixed in length, greatly limited in actual construction process, disposable in the monitoring well and high in resource waste cost.
Disclosure of Invention
The invention aims to provide a modular soil gas monitoring well, which solves the problems that the soil gas monitoring well in the prior art is disposable and has large volume and fixed length, realizes a monitoring well which can be used for many times, and saves resources.
The technical scheme for realizing the purpose of the invention is as follows:
a modular soil gas monitoring well comprises a well cover, a top layer connecting well pipe, a bottom layer sampling well pipe, a drill bit, a first gas sampling probe, a first gas conduit and a ground supporting pipe; the top layer connecting well pipe, the bottom layer sampling well pipe and the drill bit are detachably and fixedly connected in sequence from top to bottom; the well cover covers the top of the ground supporting pipe; the ground supporting pipe is arranged above the top layer connecting well pipe; a first dry bentonite layer and a first filter material layer are sequentially filled in the bottom sampling well pipe from top to bottom, and a first air inlet is formed in the pipe wall corresponding to the first filter material layer; the first gas sampling probe is arranged in the first filter material layer; the bottom end of the first gas guide pipe is connected with the first gas sampling probe, and the top end of the first gas guide pipe extends into the ground supporting pipe.
Further, the modular soil gas monitoring well is characterized in that the well cover is a well cover with a knocking head or a common well cover.
Further, a modularization soil gas monitoring well, top layer connection well casing, bottom sampling well casing, drill bit are from last to down threaded connection in proper order.
Further, the inside of the top layer connecting well pipe and the bottom layer connecting well pipe are filled with bentonite slurry.
Further, the modular soil gas monitoring well is characterized in that cement mortar is laid outside the top layer connecting well pipe, and a conical slope structure is arranged outside the cement mortar.
Further, the modular soil gas monitoring well further comprises an intermediate layer connecting well pipe, an intermediate layer sampling well pipe, a second gas sampling probe and a second gas conduit; the middle layer connecting well pipe and the middle layer sampling well pipe are detachably connected between the top layer connecting well pipe and the bottom layer connecting well pipe from top to bottom in sequence; a second dry bentonite layer, a second filter material layer and a third dry bentonite layer are sequentially filled in the middle layer sampling well pipe from top to bottom, and a second air inlet is formed in the pipe wall corresponding to the second filter material layer; the second gas sampling probe is arranged in the second filter material layer; the bottom end of the second gas guide pipe is connected with the second gas sampling probe, and the top end of the second gas guide pipe extends into the ground support pipe.
Further, the middle layer connecting well pipe is a hollow pipe.
Further, a modularization soil gas monitoring well, between first gas sampling probe and the first gas pipe, second gas sampling probe and second gas pipe pass through the push type articulate.
Further, a modularization soil gas monitoring well, all be equipped with the control valve on first gas conduit and the second gas conduit.
Further, a modularization soil gas monitoring well, top layer connection well pipe, intermediate level sampling well pipe, bottom layer connection well pipe, bottom layer sampling well pipe, drill bit are from last to down threaded connection in proper order.
By adopting the technical scheme, the invention has the following beneficial effects:
1. the detachable well structure comprises a well body filled with filter materials in advance, so that the time for filling the filter materials on site can be saved, the bentonite slurry connected with the well pipes is filled on site, the specification and the number of the connected well pipes can be selected according to the depth of the well built on site for splicing, the bentonite slurry can be replaced, the well pipe structure can be reused, the problem that the soil gas monitoring well in the prior art is large in size and fixed in length is solved, the detachable well structure can be used for multiple times, and resources are saved;
2. the Geoprobe 7822DT knocking head and the drill bit can be directly installed, well construction is realized through the cooperation of the Geoprobe 7822DT, and the construction process is simplified;
3. the well structures of all sections are connected through threads, so that the rapid disassembly and assembly can be realized;
4. the cement mortar with the conical slope structure is laid outside the top layer connecting well pipe, so that external water flow can be prevented from entering a monitoring well while the cement mortar has a fixing effect;
5. the gas pipe is connected with the probe and the control valve respectively by adopting the press type joint, so that the assembly is convenient, the length of the gas pipe can be quickly changed, and the use requirements of monitoring wells at different depths are met;
6. the soil gas monitoring well can be assembled into a single-probe soil gas monitoring well and a double-probe soil gas monitoring well, and has a wider application range.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
The reference numbers in the drawings are:
the well cover 1, the top layer connecting well pipe 2 and the bottom layer connecting well pipe 3;
a bottom sampling well pipe 4, a first dry bentonite layer 4-1, a first filter material layer 4-2 and a first air inlet 4-3;
the device comprises a drill bit 5, a first gas sampling probe 6, a first gas conduit 7, a ground support pipe 8 and an intermediate layer connecting well pipe 9;
a middle layer sampling well pipe 10, a second dry bentonite layer 10-1, a second filter material layer 10-2 and a third dry bentonite layer 10-3;
a second gas sampling probe 11, a second gas conduit 12, a push-on fitting 13, and a control valve 14.
Detailed Description
(example 1)
The modularized single-probe soil gas monitoring well shown in the figure 1 comprises a well cover 1, a top layer connecting well pipe 2, a bottom layer connecting well pipe 3, a bottom layer sampling well pipe 4, a drill bit 5, a first gas sampling probe 6, a first gas conduit 7, a ground supporting pipe 8, a press type joint 13 and a control valve 14. The well cover 1 is a common well cover, can be changed into a well cover with a Geoprobe 7822DT striking head as shown in figure 2 during drilling operation, and is matched with the Geoprobe 7822DT to realize well construction, so that the construction process is simplified, and the well cover 1 covers the top of the ground support pipe 8. The ground support pipe 8 is located the top of the top layer connecting well pipe 2, the bottom layer connecting well pipe 3, the bottom layer sampling well pipe 4 and the drill bit 5 are sequentially detachably and fixedly connected through threads from top to bottom, rapid disassembly and assembly can be realized, the structures of the well pipes can be repeatedly used, and resources are saved.
The top layer connecting well pipe 2 and the bottom layer connecting well pipe 3 are filled with bentonite slurry, the bentonite slurry is filled on site, the specifications and the number of the top layer connecting well pipe 2 and the bottom layer connecting well pipe 3 can be selected according to the depth of a built well on site to be spliced, and the bentonite slurry can be replaced. The bentonite mud is filled into the top layer connecting well pipe 2 to a position 50cm away from the ground, after the mud is dried and hardened, the cement mortar is filled into the position 10cm higher than the ground, a part higher than the ground can be built into a conical slope, the diameter of the conical ground is not less than 60cm, the top layer connecting well pipe 2 is higher than the ground by 30cm, and the external water flow can be prevented from entering the monitoring well while the top layer connecting well pipe plays a role in fixing.
The sampling well pipe 4 at the bottom layer is divided into two layers, the upper layer is filled with a first dry bentonite layer 4-1 in advance and has the thickness of 30cm, the lower layer is filled with a first filter material layer 4-2 in advance and has the thickness of 45cm, and the time for filling the filter material on site can be saved. 3 first air inlets 4-3 are uniformly distributed on the pipe wall corresponding to the first filter material layer 4-2. The top end of the first gas guide pipe 7 extends into the ground supporting pipe 8 and is connected with the control valve 14 and the first gas sampling probe 6 through the press type connector 13 respectively, the first gas sampling probe 6 extends into the middle position of the first filter material layer 4-2, the assembly is convenient, the specifications of the first gas guide pipe 7 are designed in different lengths, the specifications of the gas pipe can be replaced quickly, the specific connection condition can be regulated and controlled on site according to the depth of the sampling well, and the use requirements of monitoring wells with different depths are met.
(example 2)
In the modularized double-probe soil gas monitoring well shown in the figure 2, an intermediate layer connecting well pipe 9, an intermediate layer sampling well pipe 10, a second gas sampling probe 11 and a second gas conduit 12 are added on the basis of the structure of the embodiment 1; the well casing 9 is connected to the intermediate level is the hollow tube to and intermediate level sampling well casing 10 connect in top layer connection well casing 2 and bottom connect between the well casing 3 through screw thread detachably in proper order, can realize quick dismantlement and equipment, each well tubular construction repeatedly usable, resources are saved.
The second dry bentonite layer 10-1, the second filter material layer 10-2 and the third dry bentonite layer 10-3 are sequentially and pre-filled in the middle sampling well pipe 10 from top to bottom, the thicknesses are respectively 30cm, 45cm and 15cm, and the time for filling filter materials on site can be saved. 3 second air inlets 10-4 are uniformly distributed on the pipe wall corresponding to the second filter material layer 10-2. The top end of a second gas guide pipe 12 extends into a ground supporting pipe 8 and is connected with a second gas sampling probe 11 and a control valve 14 through a press type connector 13 respectively, the second gas sampling probe 11 extends into the middle position of a second filter material layer 10-2, the assembly is convenient, the specifications of the second gas guide pipe 12 are designed in different lengths, the specifications of a gas pipe can be replaced quickly, the specific connection condition can be regulated and controlled on site according to the depth of a sampling well, the use requirements of monitoring wells with different depths are met, and the soil gas monitoring of double probes can be realized simultaneously.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A modularization soil gas monitoring well which is characterized in that: the well cover comprises a well cover (1), a top layer connecting well pipe (2), a bottom layer connecting well pipe (3), a bottom layer sampling well pipe (4), a drill bit (5), a first gas sampling probe (6), a first gas conduit (7) and a ground support pipe (8); the top layer connecting well pipe (2), the bottom layer connecting well pipe (3), the bottom layer sampling well pipe (4) and the drill bit (5) are detachably and fixedly connected in sequence from top to bottom; the well cover (1) is covered on the top of the ground supporting pipe (8); the ground supporting pipe (8) is arranged above the top layer connecting well pipe (2); a first dry bentonite layer (4-1) and a first filter material layer (4-2) are sequentially filled in the bottom sampling well pipe (4) from top to bottom, and a first air inlet (4-3) is formed in the pipe wall corresponding to the first filter material layer (4-2); the first gas sampling probe (6) is arranged in the first filter material layer (4-2); the bottom end of the first gas guide pipe (7) is connected with the first gas sampling probe (6), and the top end of the first gas guide pipe (7) extends into the ground support pipe (8).
2. The modular soil gas monitoring well of claim 1, wherein: the well lid (1) is a well lid with a knocking head or a common well lid.
3. The modular soil gas monitoring well of claim 1, wherein: the top layer is connected well casing (2), bottom connection well casing (3), bottom sampling well casing (4), drill bit (5) from last to down threaded connection in proper order.
4. The modular soil gas monitoring well of claim 1, wherein: and bentonite mud is filled in the top layer connecting well pipe (2) and the bottom layer connecting well pipe (3).
5. The modular soil gas monitoring well of claim 1, wherein: cement mortar is laid outside the top layer connecting well pipe (2), and the outside of the cement mortar is provided with a conical slope structure.
6. The modular soil gas monitoring well of claim 1, wherein: the device also comprises an intermediate layer connecting well pipe (9), an intermediate layer sampling well pipe (10), a second gas sampling probe (11) and a second gas conduit (12); the middle layer connecting well pipe (9) and the middle layer sampling well pipe (10) are sequentially detachably connected between the top layer connecting well pipe (2) and the bottom layer connecting well pipe (3) from top to bottom; a second dry bentonite layer (10-1), a second filter material layer (10-2) and a third dry bentonite layer (10-3) are sequentially filled in the middle sampling well pipe (10) from top to bottom, and a second air inlet (10-4) is formed in the pipe wall corresponding to the second filter material layer (10-2); the second gas sampling probe (11) is arranged in the second filter material layer (10-2); the bottom end of the second gas guide pipe (12) is connected with the second gas sampling probe (11), and the top end of the second gas guide pipe (12) extends into the ground support pipe (8).
7. The modular soil gas monitoring well of claim 6, wherein: the middle layer connecting well pipe (9) is a hollow pipe.
8. The modular soil gas monitoring well of claim 6, wherein: the first gas sampling probe (6) is connected with the first gas guide pipe (7), and the second gas sampling probe (11) is connected with the second gas guide pipe (12) through a press type joint (13).
9. The modular soil gas monitoring well of claim 6, wherein: the first gas conduit (7) and the second gas conduit (12) are both provided with control valves (14).
10. The modular soil gas monitoring well of claim 6, wherein: the top layer is connected well casing (2), intermediate level and is connected well casing (9), intermediate level sampling well casing (10), bottom connection well casing (3), bottom sampling well casing (4), drill bit (5) from last to down threaded connection in proper order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924710.6A CN110596321A (en) | 2019-09-27 | 2019-09-27 | Modular soil gas monitoring well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924710.6A CN110596321A (en) | 2019-09-27 | 2019-09-27 | Modular soil gas monitoring well |
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| Publication Number | Publication Date |
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| CN110596321A true CN110596321A (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910924710.6A Pending CN110596321A (en) | 2019-09-27 | 2019-09-27 | Modular soil gas monitoring well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954464A (en) * | 2016-04-21 | 2016-09-21 | 北京中地泓科环境科技有限公司 | Method for constructing soil gas and underground water monitoring wells |
| KR101701956B1 (en) * | 2016-08-17 | 2017-02-13 | 주식회사 지오그린21 | Multipurpose-multidepth monitoring structure and installation method thereof |
| CN206399708U (en) * | 2017-01-20 | 2017-08-11 | 中国科学院新疆生态与地理研究所 | A kind of saturating formula soil profile gas collecting device of film |
| CN207148104U (en) * | 2017-08-27 | 2018-03-27 | 山西煜昊源环保科技有限公司 | The single hole stratified soil gas-monitoring well administered for contaminated site |
| CN207163772U (en) * | 2017-07-28 | 2018-03-30 | 安徽国祯环境修复股份有限公司 | A kind of soil gas is layered harvester |
| CN108956217A (en) * | 2018-09-28 | 2018-12-07 | 四川省天晟源环保股份有限公司 | A kind of novel SOIL GAS collection and detection device |
| CN109738583A (en) * | 2018-12-29 | 2019-05-10 | 苏州环职安环境工程技术有限公司 | A kind of prefabricated soil gas well device and preparation method thereof and construction method |
| CN210639151U (en) * | 2019-09-27 | 2020-05-29 | 上海洁壤环保科技有限公司 | Modular soil gas monitoring well |
-
2019
- 2019-09-27 CN CN201910924710.6A patent/CN110596321A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954464A (en) * | 2016-04-21 | 2016-09-21 | 北京中地泓科环境科技有限公司 | Method for constructing soil gas and underground water monitoring wells |
| KR101701956B1 (en) * | 2016-08-17 | 2017-02-13 | 주식회사 지오그린21 | Multipurpose-multidepth monitoring structure and installation method thereof |
| CN206399708U (en) * | 2017-01-20 | 2017-08-11 | 中国科学院新疆生态与地理研究所 | A kind of saturating formula soil profile gas collecting device of film |
| CN207163772U (en) * | 2017-07-28 | 2018-03-30 | 安徽国祯环境修复股份有限公司 | A kind of soil gas is layered harvester |
| CN207148104U (en) * | 2017-08-27 | 2018-03-27 | 山西煜昊源环保科技有限公司 | The single hole stratified soil gas-monitoring well administered for contaminated site |
| CN108956217A (en) * | 2018-09-28 | 2018-12-07 | 四川省天晟源环保股份有限公司 | A kind of novel SOIL GAS collection and detection device |
| CN109738583A (en) * | 2018-12-29 | 2019-05-10 | 苏州环职安环境工程技术有限公司 | A kind of prefabricated soil gas well device and preparation method thereof and construction method |
| CN210639151U (en) * | 2019-09-27 | 2020-05-29 | 上海洁壤环保科技有限公司 | Modular soil gas monitoring well |
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