CN105158428A - Multi-layer underground water monitoring pipe - Google Patents
Multi-layer underground water monitoring pipe Download PDFInfo
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- CN105158428A CN105158428A CN201510519141.9A CN201510519141A CN105158428A CN 105158428 A CN105158428 A CN 105158428A CN 201510519141 A CN201510519141 A CN 201510519141A CN 105158428 A CN105158428 A CN 105158428A
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Abstract
The invention belongs to the technical field of underground water monitoring, and particularly discloses a multi-layer underground water monitoring pipe. The multi-layer underground water monitoring pipe is characterized in that a monitoring hole group is formed on the outside pipe wall, tightly close to two monitoring channels in each group at the same height, of a monitoring pipe body, a water quality monitoring probe is arranged in one monitoring channel of each group of monitoring channels, a water level monitoring probe is arranged in the other monitoring channel of each group of monitoring channels, and internal plugging bolts are arranged in the monitoring channels 20 cm away below each corresponding monitoring hole group respectively. According to the multi-layer underground water monitoring pipe, multiple monitoring channels with larger apertures can be formed in one monitoring pipe, one water quality monitoring probe can be mounted in one monitoring channel of each group of monitoring channels, one water level monitoring probe is mounted in the other monitoring channel, and water quality and water level stereoscopic monitoring for one target aquifer is realized simultaneously.
Description
(1) technical field
The invention belongs to groundwater monitoring technical field, particularly a kind of underground water multilayer position monitoring pipe.
(2) background technology
To monitor and the dynamic change characterization grasping underground water is scientific evaluation groundwater resource, formulates rational exploitation and utilization and effective protection measure, the important foundation alleviating and prevent and treat groundwater contamination and relevant geologic hazard.Traditional groundwater level and water quality monitoring are generally utilize single wellhole facility, and for single target water-bearing zone or mixing water-bearing zone, the method taking field monitoring, long-haul telemetry and wellhole to sample is carried out.If want the water level and the water quality information that obtain a certain place different water cut layer, need near locality, first by building multiple wellhole, and take well-filling techniques method to form the groundwater monitoring wellhole of multiple different water cut position layer by layer, and then carry out water level and water quality monitoring.Such as, a certain place distributes three water-bearing rock groups, there is different groundwater levels respectively, if need hydraulic connection and the water quality information of understanding different water cut layer underground water, so first, need according to formation lithology and water-bearing zone distribution situation, build three degree of depth wellhole from shallow to deep, then in wellhole, chimney filter is laid, the principle in a target water-bearing zone is only retained according to a wellhole, adopt well-filling techniques to build up and comprise the Groundwater Monitoring system that three are monitored well casings, thus reach the target of monitoring different target water-bearing zone groundwater level and water quality.The facility of this single hole single layer bit groundwater monitoring wellhole and method, not only floor area is many, engineering time is long, fund input is large, add the impact of the factors such as probing lapicide precision, well-filling techniques, be difficult to the complex characteristic such as the anisotropy really disclosing water-bearing zone, correctly can not reflect the real-time dynamic-change information of underground water.For the Polluted area of underground water, because the change of zones of different water-bearing zone, drilling hole are apart from increasing and artificially drilling reason, be difficult to capture the migration of pollutant under different water cut layer, different lithology condition, conversion and diffusion process.
Along with the requirement of Evaluation of Groundwater Resources, pollution surveys and the precision of groundwater monitoring technology, the developed countries such as Europe, the U.S., Canada, Japan in groundwater monitoring facility and technical elements development rapidly.At present, groundwater monitoring facility and method generally comprise the monitoring of single hole mixed water, the monitoring of single hole single layer bit, nido monitoring.
The nineties in last century, there is the groundwater monitoring technology of a hole multitube in China, namely respectively the monitoring pipe of many different lengths is laid to specific monitor layer position in a wellhole, to be saved the situation by layering the method for gravel and clay, in same monitor well, realize the object of hierarchical monitor and stratified sampling.This monitor well is owing to laying multiple monitoring pipe in wellhole, also known as " nested monitoring well ", wherein the material of monitoring pipe is PVC.In use there is many technical barriers in this technology and facility, when well depth is excessive, monitor layer position is too much, the monitoring pipe quantity of needs is more, and corresponding hole diameter requires also larger, also has certain requirement to rig and drill bit.In addition, along with increasing of monitor layer position, the monitoring pipe of use is more, needs to carry out sealing to many monitoring pipe, and the technical difficulty of layering shut-in well increases, and also result in the waste of material.If when needing water quality and the water level conditions of monitoring a water-bearing zone simultaneously, water quality and water level monitoring instrument will be arranged in two monitoring pipe respectively, and further increase the quantity of monitoring pipe, increase difficulty of construction.
In recent years, Canadian Solinst company have developed the underground water detection system product of Multiple Type, also known as CTM system.This monitoring technology is mainly by improving PVC monitoring pipe technique, 3-7 monitoring channel is designed in same monitoring pipe, each monitoring channel can monitor the underground water of a destination layer, thus obtains and descend water stratification water level and water quality information exactly in same place, same wellhole.This monitoring product is based on the hierarchical monitor of shallow ground water, and the monitoring degree of depth, mainly between 20-50m, due to restrictions such as the elastic parameters by material, is difficult to use in the monitoring of deep phreatic water.In addition, because the passage aperture of monitoring pipe is less, underground water level measurement and water sampling need miniature water-level gauge and the sampling thief of application specific, and common sampling thief and water-level gauge can not use, and become the biggest obstacle that next step is applied.Particularly when needing water quality and the water level conditions of monitoring a water-bearing zone simultaneously, water quality and water level monitoring instrument will be arranged in two monitoring channels respectively, and cause the water-bearing zone quantity that can monitor to reduce.
For current both at home and abroad groundwater monitoring facility and the present situation of technical method and the technical matters of existence, the object of this invention is to provide a kind of underground water multilayer position monitoring pipe being applicable to deeper subsurface water monitoring.
(3) summary of the invention
The present invention in order to make up the deficiencies in the prior art, provide a kind of development & construction and handling cost is low, floor area is little, can monitor multiple target water-bearing zone in a monitor well, can to a target water-bearing zone carry out simultaneously water quality and water level stereoscopic monitoring, prevent the underground water multilayer position monitoring pipe that waterpower mixing occurs between each water-bearing zone, accurately grasps the diffusion mobility situation of pollutant in water-bearing zone, deeper subsurface water-bearing zone water level water quality situation can be monitored.
The present invention is achieved through the following technical solutions:
Underground water multilayer position monitoring pipe, comprise a columniform monitoring pipe body, axis direction along monitoring pipe body offers the monitoring channel that even number runs through bottom surface on monitoring pipe body on monitoring pipe body, each monitoring channel is uniformly distributed along monitoring pipe body circumferencial direction and is not communicated with mutually, described monitoring channel divides into groups according to often organizing two, the height that tube wall is identical outside the monitoring pipe body being close to two monitoring channels often organized is respectively equipped with a monitoring holes group, each monitoring holes group interconnects with one of them monitoring channel respectively, filter screen is enclosed with outside each monitoring holes group, a water quality monitoring probe is provided with in the wherein monitoring channel often organizing monitoring channel, a water level monitoring probe is provided with in another monitoring channel, often organize the water quality monitoring probe in monitoring channel, water level monitoring probe is all connected with the water analysis terminal of outside, below correspondence each monitoring holes group 20cm place monitoring channel in be respectively equipped with an inner suppository for blocking, Single port suppository for blocking is respectively equipped with in the bottom of each monitoring channel.
The material of described monitoring pipe body is pvc material.
Each monitoring holes group comprises at least five monitoring holes, and the vertically equidistantly arrangement from top to bottom of each monitoring holes.
The diameter of described monitoring pipe body is 75mm-100mm, and the quantity of described monitoring channel is 6, be divided into 3 groups, and the internal diameter of each monitoring channel is 30mm according to often organizing two.
The material of described inner suppository for blocking and port suppository for blocking is elastomeric material.
The beneficial effect of underground water multilayer position of the present invention monitoring pipe is:
(1) the monitoring pipe diameter of underground water multilayer position of the present invention monitoring pipe is larger, so the larger monitoring channel in multiple aperture can be offered in a monitoring pipe, overcome traditional monitoring pipe and can only use special miniature water-level gauge or the defect of sampling thief because caliber is less, can install common water quality and water level monitoring instrument in monitoring channel, adaptability is stronger.Further, a water quality monitoring probe can be installed in the wherein monitoring channel often organizing monitoring channel, a water level monitoring probe be installed in another monitoring channel, realize a stereoscopic monitoring target water-bearing zone being carried out simultaneously to water quality and water level.
(2) design of monitoring pipe one hole, underground water multilayer position of the present invention multilayer, achieve the hierarchical monitor to multiple target water-bearing zone in same monitor well, greatly reduce into well quantity and maintenance and well-flushing cost, floor area is little, development & construction and handling cost low.
(3) the partition thickness in the monitoring pipe of underground water multilayer position of the present invention monitoring pipe between each monitoring channel is large, there is good crushing resistance, multiple cut off combination after serve the effect of two aspects: 1. prevent each monitoring channel under water hydraulic communication occurring, cause and between water-bearing zone, to go here and there layer; 2. certain supporting role is formed to the outside tube wall of monitoring pipe, be out of shape after preventing monitoring channel to be squeezed, and to the monitoring pipe of the slight deformation that bends, there is certain restitution.Therefore, underground water single hole multilayer level monitoring system of the present invention is not by the restriction of the water-bearing zone degree of depth, well depth is large, can be arranged in the shallow ground water monitor well of 30m-50m and use, and also can be arranged on the degree of depth and reach in rice up to a hundred even the groundwater monitoring well of 300m and use.
(4) the inside suppository for blocking of underground water multilayer position of the present invention monitoring pipe and port suppository for blocking adopt not yielding, not perishable elastomeric material to make, each monitoring channel is relatively independent, prevent from waterpower mixing occurs between each water-bearing zone, the diffusion mobility situation of accurate grasp pollutant in water-bearing zone, strict control monitoring channel is except being communicated with target water-bearing zone, hydraulic connection can not be there is with other water-bearing zones, ensure the accuracy of Monitoring Data.
(5) monitoring pipe of underground water multilayer position of the present invention monitoring pipe is made up of pvc material, there is good thermotolerance, toughness and hardness, corrosion-resistant, firm and durable, tortuously can be convenient to transport in transportation, and original state can be recovered again after removing external force, be not easy to distortion, compressive resistance is high, to the pressure around in monitor well, there is stronger resistivity, deeper subsurface water-bearing zone water level water quality situation can be monitored, applied widely.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation that underground water multilayer position of the present invention monitoring pipe is installed on when using in monitor well.
In figure, 1 monitoring pipe body, 2 monitoring channels, 3 monitoring holes groups, 4 filter screens, 5 water quality monitoring probes, 6 water level monitoring probes, 7 water analysis terminals, 8 inner suppository for blocking, 9 port suppository for blocking.
(5) embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited thereto, and the preparation method in embodiment is customary preparation methods, no longer describes in detail.
As as shown in Fig. 1-Fig. 2, this embodiment comprises a columniform monitoring pipe body 1, axis direction along monitoring pipe body 1 offers the monitoring channel 2 that even number runs through bottom surface on monitoring pipe body 1 on monitoring pipe body 1, each monitoring channel 2 is uniformly distributed along monitoring pipe body 1 circumferencial direction and is not communicated with mutually, described monitoring channel 2 divides into groups according to often organizing two, the height that tube wall is identical outside the monitoring pipe body 1 being close to two monitoring channels 2 often organized is respectively equipped with a monitoring holes group 3, each monitoring holes group 3 interconnects with one of them monitoring channel 2 respectively, filter screen 4 is enclosed with outside each monitoring holes group 3, a water quality monitoring probe 5 is provided with in the wherein monitoring channel often organizing monitoring channel, a water level monitoring probe 6 is provided with in another monitoring channel, often organize the water quality monitoring probe 5 in monitoring channel, water level monitoring probe 6 is all connected with the water analysis terminal 7 of outside, below correspondence each monitoring holes group 3 20cm place monitoring channel 2 in be respectively equipped with an inner suppository for blocking 8, Single port suppository for blocking 9 is respectively equipped with in the bottom of each monitoring channel 2.
The material of described monitoring pipe body 1 is pvc material.
Each monitoring holes group 3 comprises at least five monitoring holes, and the vertically equidistantly arrangement from top to bottom of each monitoring holes.
The diameter of described monitoring pipe body 1 is 75mm-100mm, and the quantity of described monitoring channel is 6, be divided into 3 groups, and the internal diameter of each monitoring channel 2 is 30mm according to often organizing two.
The material of described inner suppository for blocking 8 and port suppository for blocking 9 is elastomeric material.
Based on the monitoring method of underground water multilayer position of the present invention monitoring pipe, adopt following steps:
(1) probing monitoring wellhole:
After manually excavating monitor well mouth, utilize rig to creep into, creep into from Quaternary Stratigraphic, rig diameter is D327mm, and rig drilling depth to complete bedrock surface reducing is D129mm; Drilling well complete and well-flushing after, the cast carbon steel that diameter is D217mm is entered under in monitoring wellhole, monitoring wellhole is avoided to cave in carry out protection to the borehole wall, on cast carbon steel tube wall, the position in corresponding target water-bearing zone offers cast carbon steel inlet opening, and the underground water in each target water-bearing zone can enter in cast carbon steel by each cast carbon steel inlet opening;
(2) design, process monitoring pipe body:
According to the principle of the corresponding one group of monitoring channel in each target water-bearing zone, utilize Mould Machining to produce to have the monitoring pipe body 1 of several monitoring channels, and the position in each target water-bearing zone is labeled on monitoring pipe body 1 tube wall outside one group of corresponding monitoring channel 2, the material of described monitoring pipe body 1 is pvc material; After having marked, on monitoring pipe body 1 tube wall in each target water-bearing zone of correspondence, the monitoring holes group 3 be connected with each group of corresponding monitoring channel 2 is got out respectively with hexagonal wrench rotating sharpener, the monitoring holes quantity that each monitoring holes group 3 comprises is determined according to the thickness in target water-bearing zone, comprise at least five monitoring holes, and the vertically equidistantly arrangement from top to bottom of each monitoring holes; When giving a monitoring channel boring, prevent from puncturing the partition between this monitoring channel and other monitoring channels, avoiding the waterpower string layer caused between different water cut layer, guaranteeing that a monitoring channel only monitors a target water-bearing zone;
(3) shutoff is carried out to monitoring pipe body:
Sealed with port suppository for blocking 9 respectively the bottom often organizing monitoring channel, the monitoring channel often organizing 20cm below monitoring channel monitoring holes group uses inner suppository for blocking 8 to seal respectively, and the material of described inner suppository for blocking 8 and port suppository for blocking 9 is elastomeric material;
(4) monitoring pipe body is installed to monitoring wellhole:
The monitoring holes group 3 often organizing monitoring channel wraps up filter screen 4, then a wherein monitoring channel interior installation one water quality monitoring probe 5 of monitoring channel 2 is often organized, one water level monitoring probe 6 is installed in another monitoring channel, to often organize in monitoring channel after water quality monitoring probe 5 and water level monitoring probe 6 be connected with the water analysis terminal 7 of outside by wire, monitoring pipe body is entered to monitor in the cast carbon steel of wellhole for 1 time, and layering sealing is carried out to the cavity between cast carbon steel and monitoring pipe body 1, make the underground water in each target water-bearing zone enter in corresponding often group monitoring channel respectively;
(5) water quality and the water level information in target water-bearing zone is obtained:
The data that each water quality monitoring probe 5 and water level monitoring probe 6 transfer to ground are analyzed by water analysis terminal 7, obtains water quality and the water level information in each water-bearing zone.
Underground water multilayer position of the present invention monitoring pipe can offer the larger monitoring channel in multiple aperture in a monitoring pipe, one water quality monitoring probe can be installed in the wherein monitoring channel often organizing monitoring channel, one water level monitoring probe is installed in another monitoring channel, realizes a stereoscopic monitoring target water-bearing zone being carried out simultaneously to water quality and water level.
Claims (5)
1. underground water multilayer position monitoring pipe, it is characterized in that: comprise a columniform monitoring pipe body, axis direction along monitoring pipe body offers the monitoring channel that even number runs through bottom surface on monitoring pipe body on monitoring pipe body, each monitoring channel is uniformly distributed along monitoring pipe body circumferencial direction and is not communicated with mutually, described monitoring channel divides into groups according to often organizing two, the height that tube wall is identical outside the monitoring pipe body being close to two monitoring channels often organized is respectively equipped with a monitoring holes group, each monitoring holes group interconnects with one of them monitoring channel respectively, filter screen is enclosed with outside each monitoring holes group, a water quality monitoring probe is provided with in the wherein monitoring channel often organizing monitoring channel, a water level monitoring probe is provided with in another monitoring channel, often organize the water quality monitoring probe in monitoring channel, water level monitoring probe is all connected with the water analysis terminal of outside, below correspondence each monitoring holes group 20cm place monitoring channel in be respectively equipped with an inner suppository for blocking, Single port suppository for blocking is respectively equipped with in the bottom of each monitoring channel.
2. underground water multilayer position according to claim 1 monitoring pipe, is characterized in that: the material of described monitoring pipe body is pvc material.
3. underground water multilayer position according to claim 1 monitoring pipe, is characterized in that: each monitoring holes group comprises at least five monitoring holes, and the vertically equidistantly arrangement from top to bottom of each monitoring holes.
4. underground water multilayer position according to claim 1 monitoring pipe, it is characterized in that: the diameter of described monitoring pipe body is 75mm-100mm, the quantity of described monitoring channel is 6, be divided into 3 groups, and the internal diameter of each monitoring channel is 30mm according to often organizing two.
5. underground water multilayer position according to claim 1 monitoring pipe, is characterized in that: the material of described inner suppository for blocking and port suppository for blocking is elastomeric material.
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| CN106192971A (en) * | 2016-08-26 | 2016-12-07 | 中冶集团武汉勘察研究院有限公司 | A kind of artesian water water-level observation well construction and the method for multilamellar water-level observation |
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| CN108318293A (en) * | 2018-02-05 | 2018-07-24 | 中国矿业大学 | Collection device for the sampling of gangue bashing detection of heavy metal ion |
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| CN116026284A (en) * | 2023-02-14 | 2023-04-28 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | Multifunctional layered mark measuring method |
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Application publication date: 20151216 |