CN113058965A - Monitoring device and monitoring method for solid waste landfill - Google Patents
Monitoring device and monitoring method for solid waste landfill Download PDFInfo
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- CN113058965A CN113058965A CN202110261379.1A CN202110261379A CN113058965A CN 113058965 A CN113058965 A CN 113058965A CN 202110261379 A CN202110261379 A CN 202110261379A CN 113058965 A CN113058965 A CN 113058965A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 62
- 239000002910 solid waste Substances 0.000 title claims abstract description 51
- 238000012806 monitoring device Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 21
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000006004 Quartz sand Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000004080 punching Methods 0.000 claims description 31
- 229910000278 bentonite Inorganic materials 0.000 claims description 26
- 239000000440 bentonite Substances 0.000 claims description 26
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 26
- 239000004576 sand Substances 0.000 claims description 22
- 238000005553 drilling Methods 0.000 claims description 12
- 239000004746 geotextile Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 56
- 230000000694 effects Effects 0.000 description 6
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- 238000001764 infiltration Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
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- 238000004458 analytical method Methods 0.000 description 1
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- 238000005056 compaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- General Physics & Mathematics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a monitoring device and a monitoring method for a solid waste landfill. The monitoring device comprises a monitoring well, a landfill pile body, a quartz sand layer, a first perforating section, a second perforating section, a water level meter and a pressure meter, wherein the lower end of the first pipe body of the monitoring device is movably inserted into the monitoring well, the upper end of the first pipe body extends out of the surface of the landfill pile body, the quartz sand layer is wrapped outside the peripheral surface of the first perforating section, the lower end of the second pipe body is arranged in the first pipe body, the upper end of the second pipe body penetrates through the upper end of the first pipe body in a sealing mode, the bottom of a pipe body of the second pipe body is provided with the second perforating section, the water level meter can be thrown into the second pipe body through the opened ball valve, the lower end of the third pipe body is arranged between the first pipe body and the second pipe body, the upper end of the third pipe body penetrates through the top of the first pipe body in a sealing mode, the third pipe body is provided. The invention can realize the stable monitoring of the internal gas components, the gas pressure and the water pressure of the landfill.
Description
Technical Field
The invention belongs to the technical field of safe operation and management of solid waste landfill, and particularly relates to a monitoring device and a monitoring method for a solid waste landfill.
Background
The safety monitoring of solid waste landfill sites is always a hotspot and difficult problem in the field of environmental geotechnics. Monitoring of moisture distribution and gas migration conditions in a landfill is of great practical significance to long-term safe operation and management of the landfill.
The wastes filled in the solid waste landfill are obviously influenced by the dual functions of internal biochemical degradation and external environment. On the one hand, infiltration of rainfall into the atmosphere and analysis of water carried by the solid waste itself are the main causes of the abundance of water inside the landfill. The high water level is the normal state in the operation process of the landfill site under the limit value of the drainage guiding capacity of the landfill site. The pore water pressure of a saturated region below a water level line is increased along with the increase of the depth, the change trend of the pore water pressure is important for the safety and stability of geotechnical engineering, but the existing monitoring well building method is difficult to maintain the long-term reliability.
On the other hand, under the influence of biochemical degradation, various organic gases can be continuously generated in the solid waste landfill for a long time, and monitoring of gas components and gas pressure is the key for judging the gas migration and distribution state. Due to the influence of environmental factors (air extraction or injection), the original water-air pressure balance inside the landfill is broken, and a water pressure continuous unstable state is often formed. Due to the presence of non-flow zones in the pores of the solid waste stack, significant hydraulic instability conditions still exist even in the saturation zone. Especially gas composition and pressure monitoring in the near and below saturation region has not been well addressed.
Therefore, the invention provides the gas monitoring device for the solid waste landfill to realize the stable monitoring of the gas components, the gas pressure and the water pressure inside the landfill, and has important significance for the evaluation of the operation state of the landfill and the management decision.
Disclosure of Invention
In order to solve the technical problems, the invention provides a monitoring device and a monitoring method for a solid waste landfill to realize stable monitoring of internal gas components, gas pressure and water pressure of the landfill.
The technical scheme of the invention is as follows:
in one aspect, the invention provides a monitoring device for a solid waste landfill, which is characterized in that: the device comprises:
the monitoring system comprises a first pipe body, a second pipe body and a monitoring well, wherein the lower end of the first pipe body is movably inserted into the monitoring well which is driven into a landfill yard body, the upper end of the first pipe body extends out of the surface of the landfill yard body, a first punching section is arranged on the pipe body of the first pipe body, a plurality of latticed holes are formed in the first punching section, a first bentonite layer, a first sand layer, a quartz sand layer, a second sand layer and a second bentonite layer are sequentially filled and compacted between the pipe body of the first pipe body and the side wall of the monitoring well from bottom to top in the vertical direction, and the quartz sand layer wraps the peripheral surface of the first punching section;
the lower end of the second pipe body is arranged in the first pipe body, the upper end of the second pipe body penetrates through the upper end of the first pipe body in a sealing mode, a ball valve is arranged at the upper end of the second pipe body, a second punching section is arranged at the bottom of a pipe body of the second pipe body, and a plurality of latticed holes are formed in the second punching section;
a water level gauge which can be thrown into the second pipe body through the opened ball valve;
the lower end of the third pipe body is arranged between the first pipe body and the second pipe body, the upper end of the third pipe body penetrates through the top of the first pipe body in a sealing mode, a third punching section is arranged on the third pipe body, a plurality of latticed holes are formed in the third punching section, the upper end of the third punching section is arranged in the middle of the second sand layer, the lower end of the third punching section is arranged in the middle of the first punching section of the first pipe body, and the upper end of the third pipe body is connected with a pressure gauge and a gas analyzer respectively.
Further, a third bentonite layer is filled and tamped between the lower end of the first pipe body and the bottom of the monitoring well.
Further, the lower extreme of first body is sealed through first pipe cap, the upper end of first body is sealed through the second pipe cap, the upper end of second body and the upper end of third body all seal and pass the second pipe cap.
Preferably, the first perforation section of the first pipe body is externally wrapped with a first geotextile.
Preferably, the second perforated section of the second pipe body is externally wrapped with a second geotextile.
Preferably, the third perforated section of the third pipe body is externally wrapped with a third geotextile.
Further, the upper end of the third pipe body is connected with a pipeline, and the gas analyzer is connected with the pipeline.
Furthermore, a valve is arranged on the pipeline.
In another aspect, the present invention provides a monitoring method for a solid waste landfill, the monitoring method comprising:
building the monitoring device for the solid waste landfill;
opening a ball valve of the device, putting a water level gauge into the second pipe body, and testing water pressure;
reading the gas pressure in the solid waste landfill through a pressure gauge;
the gas concentration in the solid waste landfill is measured by a gas analyzer.
Further, a method for monitoring a solid waste landfill site is provided, wherein the method for constructing the monitoring device for the solid waste landfill site specifically comprises the following steps:
drilling a hole in the vertical direction on the surface of the landfill yard body by a drilling machine to form a monitoring well;
coaxially dropping the first pipe body into the monitoring well;
a first bentonite layer, a first sand layer, a quartz sand layer, a second sand layer and a second bentonite layer are sequentially filled and compacted between the pipe body of the first pipe body and the side wall of the monitoring well from bottom to top along the vertical direction;
coaxially dropping a second pipe body into the first pipe body, and installing a ball valve at the top of the second pipe body;
and dropping the third tube body between the first tube body and the second tube body, and installing the pressure gauge and the gas analyzer in place.
The beneficial effects of the invention at least comprise:
the invention provides a monitoring device and a monitoring method for a solid waste landfill, wherein leachate in the solid waste landfill can seep and drip into a space between a first pipe body and a second pipe body from a quartz sand layer and a first punching section of the first pipe body and is converged into the second pipe body through a second punching section of the second pipe body, so that the water pressure can be measured and tested through a water level gauge, gas in the solid waste landfill seeps and drips into a third pipe body from the quartz sand layer, the first punching section of the first pipe body and a third punching section of the third pipe body, so that the gas pressure in the solid waste landfill can be obtained through a pressure gauge, the gas concentration in the solid waste landfill can be measured through a gas analyzer, and the monitoring device has triple functions of water pressure monitoring, gas pressure monitoring and gas concentration monitoring.
In addition, because the first bentonite layer, the first sand layer, the quartz sand layer, the second sand layer and the second bentonite layer are sequentially filled and compacted between the pipe body of the first pipe body and the side wall of the monitoring well from bottom to top along the vertical direction, the first bentonite layer can protect the side wall of the monitoring well from being stable and expand after contacting with leachate in the long-term operation process, the permeability coefficient is further reduced, the leachate at the first perforating section of the first pipe body is prevented from leaking downwards along the gap, simultaneously the leachate is ensured to only flow into the first pipe body from the first perforating section, the second bentonite layer can prevent the infiltration of rainfall into the atmosphere, simultaneously the gas in the pile body is prevented from diffusing to the atmosphere, the monitoring failure of the gas concentration and the gas pressure is avoided, the first sand layer and the second sand layer can play a transition role, the bentonite particles can be effectively prevented from permeating into the quartz sand layer, and the quartz sand layer is prevented from being blocked, cause the water conservancy diversion effect to become invalid, this kind of structural design can ensure the test effect of pore water pressure, has avoided external environment to the change of heap body environment simultaneously to effectively monitor the change of gas pressure and gas concentration below the inside water level line of landfill, have fine practicality.
Drawings
Fig. 1 is a schematic structural view of a monitoring device for a solid waste landfill according to this embodiment.
Detailed Description
In order to make the technical field of the present application more clearly understood, the technical solutions of the present application are described in detail below with reference to the accompanying drawings by specific embodiments.
First, the present embodiment provides a monitoring device for a solid waste landfill.
Fig. 1 is a schematic structural view of a monitoring device for a solid waste landfill according to the present embodiment, and referring to fig. 1, the monitoring device includes a first pipe 1, a second pipe 2, and a third pipe 3.
Combine fig. 1, the monitoring well 4 of squeezing into on the landfill yard stack body is inserted in the lower extreme activity of the first body 1 of this embodiment, the surface of landfill yard stack body is stretched out to the upper end of first body 1, first section of holing 5 has on the shaft of the first body 1, be provided with a plurality of latticed holes on the first section of holing, vertical follow is supreme fills in proper order and the compaction has first bentonite layer 6 from down between the shaft of the first body 1 and the lateral wall of monitoring well 4, first sand layer 7, quartz sand layer 8, second sand layer 9 and second bentonite layer 10, quartz sand layer 8 wraps up in the global outside of first section of holing 5.
With reference to fig. 1, the lower end of the second pipe body 2 of this embodiment is disposed in the first pipe body 1, the upper end of the second pipe body 2 is sealed to pass through the upper end of the first pipe body 1, the upper end of the second pipe body 2 is provided with a ball valve 11, the bottom of the pipe body of the second pipe body 2 is provided with a second punching section 12, the second punching section 12 is provided with a plurality of latticed holes, and the water level gauge 13 can be inserted into the second pipe body 2 through the opened ball valve 11.
Combine fig. 1, the lower extreme setting of the third body 3 of this embodiment is between first body 1 and second body 2, the top of the sealed top of passing first body 1 of third body 3, be provided with third section of holing 18 on the third body 3, be provided with a plurality of latticed holes on the third section of holing 18, the upper end setting of third section of holing 18 is in second sand layer 9 middle part, the lower extreme setting of third section of holing 18 is in the middle part of the first section of holing 5 of first body 1, the upper end of third body 3 is connected with manometer 14 and gas analyzer 15 respectively.
According to the monitoring device for the solid waste landfill, leachate in the solid waste landfill can seep and drip into the space between the first pipe body 1 and the second pipe body 2 from the quartz sand layer 8 and the first perforating section 5 of the first pipe body 1 and can converge into the second pipe body 2 through the second perforating section 12 of the second pipe body 2, and then the water pressure can be measured through the water level gauge 13, and gas in the solid waste landfill seeps and drips into the third pipe body 3 from the quartz sand layer 8, the first perforating section 5 of the first pipe body 1 and the third perforating section 18 of the third pipe body 3, so that the gas pressure in the solid waste landfill can be obtained through the pressure gauge 14, and the gas concentration in the solid waste landfill can be measured through the gas analyzer 15, so that triple functions of water pressure monitoring, gas pressure monitoring and gas concentration monitoring are achieved.
In addition, because the first bentonite layer 6, the first sandy soil layer 7, the quartz sand layer 8, the second sandy soil layer 9 and the second bentonite layer 10 are sequentially filled and compacted between the pipe body of the first pipe body 1 and the side wall of the monitoring well 4 from bottom to top along the vertical direction, each filling layer can fix the first pipe body 1, the first bentonite layer 6 can protect the side wall of the monitoring well 4 from being stable and can expand after contacting with leachate in the long-term operation process, the permeability coefficient is further reduced, the leachate at the first punching section 5 of the first pipe body 1 is prevented from leaking downwards along a gap, meanwhile, the leachate is ensured to only flow into the first pipe body 1 from the first punching section 5, the second bentonite layer 10 can prevent infiltration of atmospheric rainfall, simultaneously, the diffusion of gas in the pile body to the atmosphere is avoided, the monitoring failure of gas concentration and gas pressure is avoided, and the first sandy soil layer 7 and the second sandy soil layer 9 (the length can be 10-15cm) can play a transition role, in can effectively preventing bentonite granule infiltration quartz sand layer 8, avoid blockking up quartz sand layer 8, cause the water conservancy diversion effect inefficacy, this kind of structural design can ensure the test effect of pore water pressure, has avoided the external environment to the change of heap body environment simultaneously to effectively monitor the change of gas pressure and gas concentration below the inside water level line of landfill, have fine practicality.
In this embodiment, the first tube 1, the second tube 2 and the third tube 3 can be made of PE.
Referring to fig. 1, in this embodiment, the diameter of the hole formed by the monitor well 4 is generally 200mm, and a third bentonite layer 15 with a thickness not less than 5cm is laid at the bottom of the hole of the monitor well 4 after the hole is formed.
Combine fig. 1, in this embodiment, the lower extreme of first body 1 is sealed through first pipe cap 16 to prevent that leachate and impurity from getting into first body, the upper end of first body 1 is sealed through second pipe cap 17, and the upper end of second body 2 and the upper end of third body 3 are all sealed to pass through second pipe cap 17, not only can play the effect of stabilizing every body, also can avoid external environment's gas and moisture to enter into in the monitoring well 4.
In this embodiment, the specification of the first tube 1 may be DN70, the hole on the first drilling section 5 may be pre-punched into the first tube 1, the length of the first drilling section 5 on the first tube 1 may be 100 and 120cm, and the first geotextile is wrapped outside the first drilling section 5 to prevent impurities in the pile from blocking the hole and simultaneously keep the leachate from flowing into the first tube 1 from the hole.
In this embodiment, the specification of the second pipe 2 may be DN32, the hole on the second drilling section 12 may be pre-drilled into the second pipe 2, the length of the second drilling section 12 on the second pipe 2 may be 100 and 120cm, and the second geotextile is wrapped around the second drilling section 12 to prevent a part of small particle impurities in the leachate from flowing into the second pipe 2.
Referring to fig. 1, the ball valve 11 of the present embodiment may be a two-way ball valve, and the water level gauge 13 may be placed in the open state of the ball valve 11 to perform pore water pressure testing, and the closed state may prevent gas in the stack from flowing out.
With reference to fig. 1, the specification of the third pipe 3 in this embodiment may be DN15, the height of the third perforated section 18 is about 50-80cm, the center of the third perforated section 18 is preferably disposed at the second sand layer 9, this structure can ensure that when gas and liquid in the pile synchronously flow into the monitoring well 4, most of leachate flows into the second pipe 2 and the gap between the second pipe 2 and the first pipe 1, and gas enters the third pipe 3, and meanwhile, the influence that the gas pressure and the gas concentration cannot be accurately monitored due to the leachate flowing out from the pipe caused by pressure imbalance caused by the gas injection (gas extraction) process is avoided.
Similarly, in this embodiment, the holes in the third perforated section 18 can be pre-punched into the third pipe 3, and the third geotextile is wrapped outside the third perforated section 18 to prevent the impurities in the pile from blocking the holes, and simultaneously keep the gas flowing into the third pipe 3 from the holes.
It should be noted that, in this embodiment, the holes on the first punching section, the second punching section, and the third punching section may be circular holes, kidney-shaped holes, strip-shaped holes, or the like, which is not limited in this embodiment.
Referring to fig. 1, in the present embodiment, a pipeline 19 is connected to an upper end of the third tube 3, the gas analyzer 15 is connected to the pipeline 19, and further, a valve 20 is disposed on the pipeline 19 for controlling on/off of gas.
On the other hand, the embodiment also provides a monitoring method for the solid waste landfill.
The monitoring method of the embodiment specifically includes:
building the monitoring device for the solid waste landfill;
opening a ball valve of the device, putting a water level gauge 13 into the second pipe body 2, and testing the water pressure;
reading the gas pressure in the solid waste landfill through a pressure gauge 14;
the gas concentration in the solid waste landfill is measured by a gas analyzer 15.
Further, in this embodiment, the building of the monitoring device for solid waste landfill specifically includes:
drilling a hole on the surface of the landfill body in the vertical direction by a drilling machine to form a monitoring well 4, laying bentonite of about 5cm at the bottom of the hole after hole forming, and properly tamping;
the first pipe body 1 can coaxially fall into the monitoring well 3 through a crane;
a first bentonite layer 6, a first sand layer 7, a quartz sand layer 8, a second sand layer 9 and a second bentonite layer 10 are sequentially filled and compacted between the pipe body of the first pipe body 1 and the side wall of the monitoring well 4 from bottom to top along the vertical direction, each soil layer can be uniformly filled between the pipe body of the first pipe body 1 and the side wall of the monitoring well 4 through a PVC pipe with the diameter of 60mm, wherein the stacking height of the quartz sand layer is about 100cm, and the heights of the first sand layer 7 and the second sand layer 9 are about 15 cm;
the second pipe body 2 can coaxially fall into the first pipe body 1 through a crane, and a ball valve 11 is arranged at the top of the second pipe body 2;
the accessible loop wheel machine falls into the third body 3 between first body 1 and the second body 2 to it can to install manometer 14 and gas analysis appearance 15 in place.
In summary, the monitoring device and the monitoring method for the solid waste landfill provided by the embodiment can achieve the purpose that one monitoring well can monitor gas components, gas pressure and water pressure simultaneously, and have good practical values.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. The utility model provides a solid useless monitoring devices for landfill which characterized in that: the device comprises:
the monitoring system comprises a first pipe body, a second pipe body and a monitoring well, wherein the lower end of the first pipe body is movably inserted into the monitoring well which is driven into a landfill yard body, the upper end of the first pipe body extends out of the surface of the landfill yard body, a first punching section is arranged on the pipe body of the first pipe body, a plurality of latticed holes are formed in the first punching section, a first bentonite layer, a first sand layer, a quartz sand layer, a second sand layer and a second bentonite layer are sequentially filled and compacted between the pipe body of the first pipe body and the side wall of the monitoring well from bottom to top in the vertical direction, and the quartz sand layer wraps the peripheral surface of the first punching section;
the lower end of the second pipe body is arranged in the first pipe body, the upper end of the second pipe body penetrates through the upper end of the first pipe body in a sealing mode, a ball valve is arranged at the upper end of the second pipe body, a second punching section is arranged at the bottom of a pipe body of the second pipe body, and a plurality of latticed holes are formed in the second punching section;
a water level gauge which can be thrown into the second pipe body through the opened ball valve;
the lower end of the third pipe body is arranged between the first pipe body and the second pipe body, the upper end of the third pipe body penetrates through the top of the first pipe body in a sealing mode, a third punching section is arranged on the third pipe body, a plurality of latticed holes are formed in the third punching section, the upper end of the third punching section is arranged in the middle of the second sand layer, the lower end of the third punching section is arranged in the middle of the first punching section of the first pipe body, and the upper end of the third pipe body is connected with a pressure gauge and a gas analyzer respectively.
2. The monitoring device for a solid waste landfill according to claim 1, wherein: and a third bentonite layer is filled and tamped between the lower end of the first pipe body and the bottom of the monitoring well.
3. The monitoring device for a solid waste landfill according to claim 1, wherein: the lower extreme of first body is sealed through first pipe cap, the upper end of first body is sealed through the second pipe cap, the upper end of second body and the upper end of third body is all sealed to pass the second pipe cap.
4. The monitoring device for a solid waste landfill according to claim 1, wherein: the first geotextile is wrapped outside the first perforating section of the first pipe body.
5. The monitoring device for a solid waste landfill according to claim 1, wherein: and a second geotextile is wrapped outside the second perforating section of the second pipe body.
6. The monitoring device for a solid waste landfill according to claim 1, wherein: and a third geotextile is wrapped outside the third perforating section of the third pipe body.
7. The monitoring device for a solid waste landfill according to claim 1, wherein: the upper end of the third pipe body is connected with a pipeline, and the gas analyzer is connected with the pipeline.
8. The monitoring device for a solid waste landfill according to claim 7, wherein: the pipeline is provided with a valve.
9. A monitoring method for solid waste landfill is characterized in that: the monitoring method comprises the following steps:
constructing a monitoring device for a solid waste landfill according to any one of claims 1 to 8;
opening a ball valve of the device, putting a water level gauge into the second pipe body, and testing water pressure;
reading the gas pressure in the solid waste landfill through a pressure gauge;
the gas concentration in the solid waste landfill is measured by a gas analyzer.
10. A monitoring method for solid waste landfill is characterized in that: the construction of the monitoring device for solid waste landfill according to any one of claims 1 to 8, specifically comprising:
drilling a hole in the vertical direction on the surface of the landfill yard body by a drilling machine to form a monitoring well;
coaxially dropping the first pipe body into the monitoring well;
a first bentonite layer, a first sand layer, a quartz sand layer, a second sand layer and a second bentonite layer are sequentially filled and compacted between the pipe body of the first pipe body and the side wall of the monitoring well from bottom to top along the vertical direction;
coaxially dropping a second pipe body into the first pipe body, and installing a ball valve at the top of the second pipe body;
and dropping the third tube body between the first tube body and the second tube body, and installing the pressure gauge and the gas analyzer in place.
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CN115754239A (en) * | 2022-11-23 | 2023-03-07 | 东南大学 | In-situ monitoring device and monitoring method suitable for polluted gas in polluted site |
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