CN217060518U - Borehole casing type fault gas observation well structure - Google Patents
Borehole casing type fault gas observation well structure Download PDFInfo
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- CN217060518U CN217060518U CN202220979415.8U CN202220979415U CN217060518U CN 217060518 U CN217060518 U CN 217060518U CN 202220979415 U CN202220979415 U CN 202220979415U CN 217060518 U CN217060518 U CN 217060518U
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- China
- Prior art keywords
- gas
- well structure
- observation well
- filler
- collecting pipe
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- 239000000945 filler Substances 0.000 claims abstract description 27
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 239000003673 groundwater Substances 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 239000010802 sludge Substances 0.000 claims description 2
- 238000003325 tomography Methods 0.000 claims 1
- 238000004321 preservation Methods 0.000 abstract description 19
- 230000035699 permeability Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000009313 farming Methods 0.000 abstract description 5
- 230000004720 fertilization Effects 0.000 abstract description 5
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 37
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model discloses a drilling bushing type fault gas observation well structure, including permeability cell and the vertical jam-proof collecting main buried underground, the inside packing of jam-proof collecting main has the ventilative filler, and the top of jam-proof collecting main exposes in ground and its periphery is equipped with and encloses the fender, encloses the fender intussuseption and is filled with the heat preservation filler, exposes on permeability cell upper portion and passes the heat preservation filler in enclosing fender and its lower part and bury underground in the ventilative filler, and the top of enclosing the fender is equipped with the ceiling. The utility model discloses must be greater than the influence degree of depth of surface underwater seepage with the buried depth of jam-proof gas collecting tube underground to set up on jam-proof gas collecting tube upper portion and enclose fender and heat preservation filler, solved because of the heavy rainfall in summer, the difference in temperature becomes big, groundwater buried depth is more shallow, the underground silt layer gas permeability is poor, earth's surface vegetation grows vigorously, root system respiration, the interference of external factors such as agro-farming production fertilization and soil chemical reaction, improve fault gas instrument operation and observation data quality, improve measured data's continuity and accuracy.
Description
Technical Field
The utility model belongs to the technical field of earthquake precursor monitoring, concretely relates to drilling bushing type fault gas observation well structure.
Background
The fault gas observation has wide application and research prospect in earthquake science, and fault gases Rn and H can be searched in the earthquake monitoring and forecasting work 2 、CO 2 And judging the epicenter position by the aid of the concentrated release points, counting the concentrated release time periods to predict the earthquake origin time, and comprehensively analyzing the release intensity and the release range to estimate the earthquake magnitude. Some experts and scholars in China develop fault gas concentration observation test researches in first quarter areas, Dian Chuangyun test sites, Tianshan zones and the like, the areas are high in altitude, low in diving positions and not developed in vegetation, and few external environment factors are considered in the design and construction process of observation holes. However, in the process of developing fault gas sites of the Tan's fault zone in the dormitory and experimental observation, the inventor finds that the design and construction scheme of the gas collecting pit which is generally applicable in some middle and western regions is limited by the underground water level and has shallow gas taking depth in eastern regions, and can not solve the problem that the fault gas instrument operation and the observation data quality are seriously influenced by external factor interference such as heavy rainfall in summer, large temperature difference amplitude, shallow underground water buried depth, poor air permeability of an underground silt layer, vigorous growth of surface vegetation, root respiration, farming production fertilization, soil chemical reaction and the like. Therefore, when the dormitory city carries out the construction of the fault gas continuous fixed observation distribution point, the borehole casing type fault gas observation well device is provided for solving the influence of the external environment interference factors on the observation data.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to not enough in the background art, provide a drilling bushing type fault gas observation well structure, through the utility model discloses can solve because of the heavy rainfall in summer, the difference in temperature becomes the interference that becomes great, groundwater depth is more shallow, the permeability of underground silt layer is poor, earth's surface vegetation grows exuberantly, external factors such as root respiration, farming production fertilization and soil chemical reaction, improve fault gas instrument operation and observation data quality, improve measured data's continuity and accuracy.
In order to achieve the above object, the technical solution of the present invention is as follows:
the utility model provides a drilling bushing type fault gas observation well structure which characterized in that: the anti-interference air collecting pipe is vertically embedded underground, the anti-interference air collecting pipe is filled with air-permeable fillers, the top of the anti-interference air collecting pipe is exposed out of the ground, a surrounding baffle is arranged on the periphery of the anti-interference air collecting pipe, heat-insulation fillers are filled in the surrounding baffle, the upper portion of the air-permeable pipe is exposed out of the surrounding baffle, the lower portion of the air-permeable pipe penetrates through the heat-insulation fillers and is embedded in the air-permeable fillers, and a ceiling is arranged above the surrounding baffle.
Preferably, the breathable filler sequentially comprises a fine sand layer, a pebble layer and a gravel layer from bottom to top, and the lower end of the breathable pipe is located on the pebble layer.
Preferably, the pebble layer is positioned below the ground, and the fine sand layer is positioned above the ground.
Preferably, the depth of the pebble bed in the ground is above the ground water level.
Preferably, the burying depth of the anti-interference gas collecting pipe under the ground is larger than the depth influenced by surface underwater seepage.
Preferably, the anti-interference gas collecting pipe penetrates through a sludge layer at the underground burying depth.
Preferably, the heat preservation filler is fine silt.
Preferably, the height of the enclosure is 1m-3 m.
Preferably, the inner surface and the outer surface of the enclosure are provided with heat insulation layers.
Compared with the prior art, the utility model discloses beneficial effect as follows:
the utility model discloses must be greater than the influence degree of depth of subsurface infiltration with the buried depth of jam-proof discharge underground, and set up on the upper portion of jam-proof discharge and enclose fender, heat preservation and heat preservation filler, solved because of heavy rainfall in summer, the change of amplitude of temperature difference is great, groundwater burial depth is shallow, the gas permeability of underground silt bed is poor, earth's surface vegetation grows vigorously, the interference of external factors such as root respiration, farming production fertilization and soil chemical reaction, improve fault gas instrument operation and observation data quality, improve the accuracy of measured data; the utility model discloses an jam-proof gas collecting tube, permeability cell are open structure, can ensure its inside and external pressure balance, improve monitoring data's continuity and accuracy.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. the device comprises a vent pipe, 2 an anti-interference gas collecting pipe, 3 a vent filler, 301 a fine sand layer, 302 a pebble layer, 303 a gravel layer, 4 a fence, 5 a heat-preservation filler, 6 a ceiling, 7 and a heat-preservation layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "middle", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in figure 1, the drilling sleeve type fault gas observation well structure comprises a vent pipe 1 and an anti-interference gas collecting pipe 2 vertically buried underground, when in actual use, the ground is drilled firstly, then the anti-interference gas collecting pipe is inserted into the drilled hole, the anti-interference gas collecting pipe is arranged perpendicular to the direction of a stratum, the burying depth of the anti-interference gas collecting pipe is determined according to the underground seepage influence depth of the position of a monitoring point, when meeting a silt layer, the anti-interference gas collecting pipe needs to penetrate the silt layer, the depth of the anti-interference gas collecting pipe is 45m in the embodiment, so that the interference of external factors such as strong summer rainfall, large temperature difference amplitude, shallow underground water burying depth, poor underground silt layer air permeability, vigorous surface vegetation growth, root respiration, farming production, fertilization chemical reaction and the like is solved, the anti-interference gas collecting filler 3 is filled, and the air filler sequentially comprises a fine sand layer 301 from bottom to top, an inner part, a plurality of fine sand layers, a plurality of air holes, and a plurality of air holes, A pebble layer 302 and a gravel layer 303, wherein the lower end of the vent pipe is positioned on the pebble layer, in the embodiment, the pebble layer is positioned below the ground, the fine sand layer is positioned above the ground, the depth of the pebble layer in the ground is above the ground water level, the pebble layer is made of cleaned cobblestones, the storage volume of fault gas is large due to the smooth surface and the large surface area of the cobblestones, the gas production rate is further improved, in order to prevent the fine sand in the enclosure from falling into the pebble layer, the gravel layer is laid on the upper part of the pebble layer, the top of the anti-interference gas collecting pipe is exposed out of the ground, the periphery of the anti-interference gas collecting pipe is provided with a surrounding barrier 4, the surrounding barrier can eliminate the interference of environmental factors such as surrounding vegetation, the height of the surrounding barrier is 1m-3m and can be specifically determined according to the heat preservation effect in the surrounding barrier, the height of the surrounding barrier in the embodiment is 2m, the surrounding barrier is embedded with heat preservation filler 5, the upper part of the vent pipe is exposed out of the surrounding barrier, and the lower part of the vent pipe penetrates through the heat preservation filler, the fault gas generated underground rises through the air permeable filler and then escapes from the air permeable pipe, and the air permeable pipe is connected with a gas analysis instrument during observation.
In this embodiment, the heat preservation filler is the silty sand, when the heat preservation effect is not good, can be in enclosing the fender, the outside adds establishes heat preservation 7, the heat preservation adopt conventional building heat preservation can, concrete material can be EPS board commonly used, the extruded polystyrene board, YAPU rigid foam polyurethane heat preservation intergral template, glass fiber heat preservation cotton etc. the heat preservation filler can effectively avoid causing the problem of interference to monitoring data because of the steep rise of temperature or the abrupt drop near the gas taking port that temperature abrupt change caused, the utility model discloses an anti-interference gas collecting pipe and permeability cell are open structure, can ensure anti-interference gas collecting pipe, permeability cell and external pressure balance, avoid leading to gas strength to increase because of its internal pressure is too big to influence monitoring data's accuracy, in order to avoid debris or rainwater to produce the interference to monitoring data accuracy, the top of enclosing the fender is equipped with ceiling 6.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (9)
1. The utility model provides a drilling bushing type fault gas observation well structure which characterized in that: the anti-interference gas collecting pipe is filled with a gas permeable filler, the top of the anti-interference gas collecting pipe is exposed out of the ground, a surrounding baffle is arranged on the periphery of the anti-interference gas collecting pipe, a heat insulation filler is filled in the surrounding baffle, the upper portion of the gas collecting pipe is exposed out of the surrounding baffle, the lower portion of the gas collecting pipe penetrates through the heat insulation filler and is embedded in the gas permeable filler, and a ceiling is arranged above the surrounding baffle.
2. The borehole casing type tomographic gas observation well structure as recited in claim 1, wherein: the breathable filler sequentially comprises a fine sand layer, a pebble layer and a gravel layer from bottom to top, and the lower end of the breathable pipe is located on the pebble layer.
3. The borehole casing type tomographic gas observation well structure as recited in claim 2, wherein: the pebble layer is positioned below the ground, and the fine sand layer is positioned above the ground.
4. The borehole casing type tomographic gas observation well structure as recited in claim 3, wherein: the depth of the pebble layer in the ground is above the ground water level.
5. The borehole casing type tomographic gas observation well structure as recited in claim 1, wherein: the buried depth of the anti-interference gas collecting pipe under the ground is larger than the depth of influence of surface underwater seepage.
6. The borehole casing type tomographic gas observation well structure as recited in claim 5, wherein: the anti-interference gas collecting pipe penetrates through the sludge layer at the underground embedding depth.
7. The borehole casing type tomographic gas observation well structure as recited in claim 1, wherein: the heat-insulating filler is fine silt.
8. The borehole casing type tomographic gas observation well structure as recited in claim 1, wherein: the height of the enclosure is 1m-3 m.
9. A borehole casing type tomography observation well structure according to claim 1 or 8, wherein: the inner surface and the outer surface of the enclosing barrier are provided with heat insulation layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220979415.8U CN217060518U (en) | 2022-04-26 | 2022-04-26 | Borehole casing type fault gas observation well structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220979415.8U CN217060518U (en) | 2022-04-26 | 2022-04-26 | Borehole casing type fault gas observation well structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217060518U true CN217060518U (en) | 2022-07-26 |
Family
ID=82473475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220979415.8U Expired - Fee Related CN217060518U (en) | 2022-04-26 | 2022-04-26 | Borehole casing type fault gas observation well structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217060518U (en) |
-
2022
- 2022-04-26 CN CN202220979415.8U patent/CN217060518U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |