CN204940237U - A kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys - Google Patents
A kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys Download PDFInfo
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- CN204940237U CN204940237U CN201520196570.2U CN201520196570U CN204940237U CN 204940237 U CN204940237 U CN 204940237U CN 201520196570 U CN201520196570 U CN 201520196570U CN 204940237 U CN204940237 U CN 204940237U
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Abstract
本实用新型提供一种用于非正规垃圾填埋场污染调查及治理修复的多功能监测井系统，属于环境技术领域；系统包括监测井孔、监测井顶盖、三根井管、井管固定架、井管密封盖、井管管套、气体接口装置和混凝土井台；其中，井管从上到下由实管、筛管、沉淀管和丝堵组成，实管和筛管通过井管连接套连接，并用螺丝钉固定；三根井管竖向平行布设的井管之间每隔1米用井管固定架进行固定，防止筛管管壁之间互相黏连造成开孔阻塞；每根井管长度不一样，分别用于填埋气、渗滤液和地下水的取样及监测；每根井管的上方开口处均配有直径比井管略大的井管密封盖和管套，并且井管上方加设气体接口装置用于监测填埋气；井管外用水洗石英砂作为滤料填充，并在相对隔水层和接近地表处填充膨润土隔水；井口处使用混凝土浇筑直至地表面用以固定井管；在监测井上方设可锁式监测井顶盖；本实用新型适用于非正规垃圾填埋场修复前的污染调查和修复后的长期环境与安全监测。
The utility model provides a multifunctional monitoring well system used for pollution investigation and treatment and repair of informal landfill sites, which belongs to the field of environmental technology; the system includes a monitoring well hole, a monitoring well top cover, three well pipes, and a well pipe fixing frame , well pipe sealing cover, well pipe casing, gas interface device and concrete well platform; among them, the well pipe is composed of real pipe, screen pipe, sedimentation pipe and plug from top to bottom, and the real pipe and screen pipe are connected through the well pipe sleeve connected and fixed with screws; three well pipes arranged in parallel vertically are fixed with a well pipe fixing frame every 1 meter to prevent the screen pipe walls from sticking to each other and causing the opening to be blocked; the length of each well pipe is different. The same, used for sampling and monitoring of landfill gas, leachate and groundwater respectively; the upper opening of each well pipe is equipped with a well pipe sealing cover and a pipe sleeve with a diameter slightly larger than the well pipe, and a gas seal is installed above the well pipe. The interface device is used to monitor the landfill gas; the outside of the well pipe is filled with water-washed quartz sand as a filter material, and bentonite is filled in the relative water-resisting layer and near the surface to prevent water; the wellhead is poured with concrete until the ground surface is used to fix the well pipe; A lockable monitoring well top cover is arranged above the monitoring well; the utility model is suitable for the pollution investigation before the repair of the informal landfill and the long-term environment and safety monitoring after the repair.
Description
Technical field
The utility model belongs to field of environmental technology.
Background technology
Along with the acceleration of economic development and urbanization, the output of domestic waste increases severely day by day, but but there is very large breach between the disposal ability of domestic waste and the output of rubbish.This directly results in part household garbage, architecture sediment and hazardous waste etc. and just carries out simple and easy landfill without harmless treatment, these landfill places are not followed Specification and are carried out Specialty Design and the construction such as overall antiseepage or guide, and One's name is legion, position dispersion, define a large amount of informal landfill in China.Because the place situation of informal landfill is complicated, border is indefinite, seriously polluted, not only there is the pollution of junk-heap body itself, and also having the gas of junk-heap body, percolate and the pollution to Soil Surrounding and groundwater environment, numerous pollution types brings many difficulties and challenge for carrying out informal landfill pollution surveys and administering repair.
The site investigation work of informal landfill, its main purpose finds out the pollution to its surrounding soil and underground water of the composition and characteristics of junk-heap body within the scope of landfill yard, landfill scope and the degree of depth, the scale of construction and junk-heap body, for informal landfill assessment and administer reparation reliable foundation be provided.Due to China's informal landfill One's name is legion, administer in large scale, distinguish to some extent with the investigation work of common contaminated soil and underground water, and domestic not yet appearance is at present investigated and the specification of monitoring and standard about informal landfill, how budgetaryly complete pollution surveys limited most effectively and administer repair, and take into account the long-range circumstances and safety monitoring of administering rear place on this basis, be a new direction of this area research at present.
The utility model not only can complete informal junk-heap body and soil sample by a bite well simultaneously, can also realize carrying out synchronized sampling and long term monitoring to landfill gas (biogas), percolate, underlie original soil layer and groundwater pollution situation.This multifunctional monitoring well can reduce the sum laying exploratory hole in informal landfill survey area, realizes a well multiplex, thus reduces prospecting cost, increases work efficiency.
Utility model content
The utility model provides a kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys.At present, the domestic specification investigated about informal landfill and monitor and the standard not yet putting into effect system, the investigation of informal landfill is mainly carried out with reference to the investigation of regular Sanitary Landfill and the working programme of monitoring and technical specification with monitoring, also uses for reference past similar prospecting project simultaneously.Usually, in informal landfill pollution surveys and improvement rehablitation project, administer preprosthetic investigation and assessment and comprise prospecting to junk-heap body, soil and groundwater, percolate and landfill gas and sampling, administer the environment after repairing and safety monitoring and comprise periodic monitoring to soil, underground water, landfill gas and place air.The exploratory hole laid before generally repairing, usually in investigation with will go out of use after terminating evaluation stage, then needs again to lay for the environment after repairing and safety monitoring well.But, in practical operation, funds for site investigation and improvement reinstatement works are often very limited, if an exploratory hole not only can repair the prospecting and sampling that are used for early stage junk-heap body, percolate, soil and groundwater and landfill gas, but also may be used for administering the environment after repairing and safety monitoring, then can use manpower and material resources sparingly financial resources greatly, reduces reinstatement works cost.The utility model by building the multiplex sampling of an a kind of well and monitoring system, a bite wellhole complete administer repair before and after to the prospecting of junk-heap body, landfill gas, percolate and the original soil layer soil and groundwater that underlie and sampling.
The utility model is applicable to the long-range circumstances after the preprosthetic pollution surveys of informal landfill and reparation and safety monitoring.
The technical scheme that the utility model solution key technical problem adopts is:
Design a kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys, system comprises monitoring wellhole (7); Monitor well top cover (8); Three well casings, every root consists of well casing adapter sleeve (10) real pipe (6) and screen casing (11); Well casing fixed mount (24); Sediment tube (12); Plug (13); Well casing seal cover (2); Well casing pipe box (19); Gas interface device (1) and concrete raised platform around a well (3).
Well casing is made up of real pipe (6), screen casing (11) and sediment tube (12) from top to bottom, and seals with plug (13) in bottom.Screen casing (11), with even bar shaped perforate, flows into well casing from outside to make gas (liquid) body.Real pipe (6) is connected by well casing adapter sleeve (10) with screen casing (11), fix in adapter sleeve both sides with eight screws (18), namely real pipe (6) and screen casing (11) respectively embed four in both sides up and down.
Place three well casings in monitor well, be respectively used to sampling and the monitoring of landfill gas, percolate and underground water.Every root well casing length is different, should to waste layer (26) bottom, percolate (14) at the bottom of the pipe of landfill gas monitoring pipe, at the bottom of the pipe of percolate monitoring pipe should to percolate (14) below, on relative water resisting layer (15), at the bottom of the pipe of groundwater monitoring pipe should to aquifer (16) waterline about 2 meters, more than lower floor's water barrier.With well casing fixed mount (24), well casing is fixed every 1 meter in three well casings, prevent from being adhered mutually between screen casing (11) tube wall causing perforate to block.
Get pedotheque in upper cover layer (25), get rubbish sample at Aerated Landfill Layers, get pedotheque at the soil horizon that underlies, get aquifer pedotheque at aquifer respectively in the process of boring well-digging.By the method for pipe under assembly limit, limit, three good for assembly well casings are put into hole after pore-forming, after lower pipe, wash quartz sand (5) with water upwards to fill from shaft bottom until the well casing adapter sleeve position of groundwater monitoring pipe, i.e. aquifer (16) top board.Fill (4) with swell soil subsequently and carry out sealing to relative water resisting layer (15) top.Continue to wash quartz sand (5) with water and be filled to well casing top until under covering layer (25), more in place with appropriate swell soil filling (4).Well head place uses concrete (3) to build until ground surface (9) is in order to fixing well casing.Raised platform around a well exceeds ground surface about 0.2 meter.Lockable monitor well top cover (8) is established above monitor well.
The upper opening place of every root well casing is all furnished with the diameter well casing seal cover (2) more bigger than well casing and well casing pipe box (19).Above the well casing for monitoring landfill gas, add gas interface device (1), gas interface device (1) is monitored valve (20), control damper (21), extract system connector (22) and Flange joint (23) by landfill gas and is formed.Utilize extract system connector can also carry out the experiment work of gas phase extracting.
The beneficial effect realized:
A kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys that the utility model provides, informal junk-heap body and soil sample can either be completed, also can realize carrying out synchronized sampling and long term monitoring to landfill gas, percolate, underlie original soil layer and groundwater pollution situation.
The utility model provide a kind of for informal landfill pollution surveys with administer the multifunctional monitoring well repaired and can reduce the sum laying exploratory hole in informal landfill survey area, realize a well multiplex, thus reduce prospecting cost, increase work efficiency.
Accompanying drawing explanation
Fig. 1 is that vertical section of the present utility model launches schematic diagram;
Fig. 2 is gas interface device schematic diagram of the present utility model;
Fig. 3 is well casing adapter sleeve scheme of installation of the present utility model;
Fig. 4 is well casing fixed mount schematic diagram of the present utility model.
In figure: gas interface device (1), well casing seal cover (2), concrete raised platform around a well (3), swell soil fills (4), washing quartz sand (5), real pipe (6), monitoring wellhole (7), monitor well top cover (8), ground surface (9), well casing adapter sleeve (10), screen casing (11), sediment tube (12), plug (13), percolate (14), relative water resisting layer (15), aquifer (16), underlie original soil layer (17), screw (18), well casing pipe box (19), landfill gas monitoring valve (20), control damper (21), extract system connector (22), Flange joint (23), well casing fixed mount (24), covering layer (25), waste layer (26).
Detailed description of the invention
The utility model can be applied to the pollution surveys before informal landfill improvement and evaluation work, also can be applied to the long-range circumstances after improvement and safety monitoring work.The utility model a bite wellhole complete administer repair before and after to the prospecting of junk-heap body, landfill gas, percolate and the original soil layer soil and groundwater that underlie and sampling.
The utility model provides a kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys, and its detailed description of the invention is:
Design a kind of multifunctional monitoring well repaired with improvement for informal landfill pollution surveys, system comprises monitoring wellhole (7); Monitor well top cover (8); Three well casings, every root consists of well casing adapter sleeve (10) real pipe (6) and screen casing (11); Well casing fixed mount (24); Sediment tube (12); Plug (13); Well casing seal cover (2); Well casing pipe box (19); Gas interface device (1) and concrete raised platform around a well (3).
Well casing material selection rigid polyvinyl chloride (PVC), nominal diameter is 40 millimeters, be made up of real pipe (6), screen casing (11) and sediment tube (12) from top to bottom, and seal with plug (13) in bottom.Screen casing (11), with even bar shaped perforate, flows into well casing from outside to make landfill gas, percolate and underground water.The width that cracks of screen casing (11) will determine according to the formation condition in place with spacing of cracking.Real pipe (6) is connected by well casing adapter sleeve (10) with screen casing (11), well casing adapter sleeve (10) is PVC material, fix in adapter sleeve both sides with eight screws (18), namely real pipe (6) and screen casing (11) respectively embed four in both sides up and down.If the length of below screen casing (11) is longer, can suitably increase screw (18) respectively in the junction of real pipe (6) and screen casing (11), loosen to prevent well casing adapter sleeve (10).
The diameter of exploratory hole is set as 140 millimeters.Drilling depth should be determined according to the hydrogeological conditions in place, pollutant speciality, pollution path, Contaminants Transport feature.In drilling process, reply following items carries out spot sampling and detection: 1) the refuse soil aggregate sample sampling of rubbish and rubbish base plate detects; 2) undisturbed soil and underground water sampling detect; 3) percolate sampling detects; 4) level measuring; 5) rubbish landfill gas sampling detects.
Monitor well boring reaches the requirement degree of depth, after completing spot sampling, need carry out boring and eluriate, remove the refuse soil, mud etc. in boring, then start lower pipe.Lower Guan Qianxian corrects hole depth, determines the lower pipe degree of depth and screen casing (11) length.The length of screen casing (11) determines according to waste layer (26) thickness, bury of groundwater and hydrogeological characteristics.
Place three PVC well casings in monitor well, be respectively used to sampling and the monitoring of landfill gas, percolate and underground water.Every root well casing length is different, should to waste layer (26) bottom, percolate (14) at the bottom of the pipe of landfill gas monitoring pipe, at the bottom of the pipe of percolate monitoring pipe should to percolate (14) below, on relative water resisting layer (15), at the bottom of the pipe of groundwater monitoring pipe should to aquifer (16) waterline about 2 meters, more than bottom water barrier.By the method for pipe under assembly limit, limit, three good for assembly well casings are put into hole after pore-forming, after lower pipe, well casing is hung directly, righting, and well casing is fixed with PVC well casing fixed mount (24) every 1 meter in three well casings, concentric with boring, prevent from being adhered mutually between lower screen (11) tube wall causing perforate to block.
Select hard, that density the is large washing quartz sand (5) of quality to fill as filtrate, the particle diameter of filtrate is determined according to the particle diameter of aquifer (16) particle.Aquifer soil particle diameter is larger, and the particle diameter of filtrate is larger, and the perforate of screen casing (11) is then larger.If aquifer (16) are made up of the soil layer of different-grain diameter, then with the thinnest soil layer for representative.Gap width on screen casing (11) is less than the diameter of the washing quartz sand (5) of more than 90%.Fill height from shaft bottom upwards until the well casing adapter sleeve position of groundwater monitoring pipe, i.e. aquifer (16) top board.Fill (4) with swell soil subsequently and carry out sealing, the thickness of sealing from filtrate up about at least 50 centimetres to relative water resisting layer (15) top.Continue to wash quartz sand (5) with water and be filled to well casing top until under covering layer (25), more in place with appropriate swell soil filling (4).
Well head place uses concrete (3) to build until ground surface (9) is in order to fixing well casing.Raised platform around a well exceeds ground surface about 0.2 meter.Above monitor well, arrange lockable monitor well top cover (8), monitor well top cover (8) selects waterproof material, highly about 0.2 meter.
After completing informal landfill improvement reparation, formulation environment and safety monitoring plan is needed to carry out periodic monitoring to pollutant residual in place.The rear monitoring project of multifunctional monitoring well comprises percolate residual in place and landfill gas, and the pollution condition of underground water.The upper opening of every root well casing is all furnished with the diameter well casing seal cover (2) more bigger than well casing and well casing pipe box (19) in place, and pipe box (19) selects waterproof and non-damageable material.Above the well casing for monitoring landfill gas, adding gas interface device (1), by regulating landfill gas monitoring valve (20), control damper (21) and extract system connector (22), monitor and forecast being carried out to the discharge of residual landfill gas.When carrying out monitoring sampling to percolate and underground water, need to unclamp the screw (18) be connected with well casing seal cover (2), open well casing seal cover (2), put into small-sized sampling pump or swing pipe and gather water sample or percolate.After completing sampling, well casing seal cover (2) and well casing pipe box (19) are set back, and monitor well top cover (8) is built lock.
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Cited By (13)
| 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 |
| CN107144306A (en) * | 2017-06-19 | 2017-09-08 | 北京国环清华环境工程设计研究院有限公司 | A kind of multifunctional well applied to refuse landfill |
| US10208585B2 (en) | 2015-08-11 | 2019-02-19 | Intrasen, LLC | Groundwater monitoring system and method |
| CN110082164A (en) * | 2019-04-12 | 2019-08-02 | 中冶建筑研究总院有限公司 | A kind of underground water multilayer undisturbed monitoring system |
| CN110095308A (en) * | 2019-04-12 | 2019-08-06 | 中冶节能环保有限责任公司 | One kind is for organic contamination site investigation and long term monitoring sampled well system and its well building method |
| CN110132649A (en) * | 2019-04-30 | 2019-08-16 | 同济大学 | A Sampling System for Environmental Investigation of Groundwater in Contaminated Sites |
| CN110441208A (en) * | 2019-08-09 | 2019-11-12 | 陈芬娜 | A kind of landfill site seepage prevention system tracking and monitoring well and its method for arranging |
| CN110987525A (en) * | 2019-10-29 | 2020-04-10 | 上海市政工程设计研究总院（集团）有限公司 | Tube well device suitable for layered sampling of underground water in polluted site |
| CN111411901A (en) * | 2020-04-28 | 2020-07-14 | 北京市地质工程勘察院 | Small-caliber shallow groundwater nested monitoring well and well completion method thereof |
| CN111425186A (en) * | 2020-04-28 | 2020-07-17 | 北京市地质工程勘察院 | Shallow underground water small-caliber cluster type monitoring well and well completion method thereof |
| CN113404488A (en) * | 2021-07-28 | 2021-09-17 | 北京建工环境修复股份有限公司 | Underground water nest bundle type layered monitoring well system |
| CN114733890A (en) * | 2022-03-17 | 2022-07-12 | 湖南新九方科技有限公司 | A groundwater restoration and monitoring channel structure in a landfill area |
| CN114878767A (en) * | 2022-05-05 | 2022-08-09 | 南京大学 | A laboratory cluster type compound monitoring well |
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- 2015-04-02 CN CN201520196570.2U patent/CN204940237U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10208585B2 (en) | 2015-08-11 | 2019-02-19 | Intrasen, LLC | Groundwater monitoring system and method |
| CN105954464B (en) * | 2016-04-21 | 2018-05-25 | 北京中地泓科环境科技有限公司 | A kind of well building method of SOIL GAS groundwater monitoring well |
| 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 |
| CN107144306A (en) * | 2017-06-19 | 2017-09-08 | 北京国环清华环境工程设计研究院有限公司 | A kind of multifunctional well applied to refuse landfill |
| CN110082164A (en) * | 2019-04-12 | 2019-08-02 | 中冶建筑研究总院有限公司 | A kind of underground water multilayer undisturbed monitoring system |
| CN110095308A (en) * | 2019-04-12 | 2019-08-06 | 中冶节能环保有限责任公司 | One kind is for organic contamination site investigation and long term monitoring sampled well system and its well building method |
| CN110095308B (en) * | 2019-04-12 | 2024-04-05 | 中冶节能环保有限责任公司 | Sampling well system for organic pollution site investigation and long-term monitoring and well construction method thereof |
| CN110132649A (en) * | 2019-04-30 | 2019-08-16 | 同济大学 | A Sampling System for Environmental Investigation of Groundwater in Contaminated Sites |
| CN110132649B (en) * | 2019-04-30 | 2024-05-28 | 同济大学 | A sampling system for groundwater environmental investigation at contaminated sites |
| CN111705848A (en) * | 2019-08-09 | 2020-09-25 | 杨春花 | Arrangement method of tracking monitoring wells of landfill seepage-proofing system |
| CN110441208A (en) * | 2019-08-09 | 2019-11-12 | 陈芬娜 | A kind of landfill site seepage prevention system tracking and monitoring well and its method for arranging |
| CN110987525A (en) * | 2019-10-29 | 2020-04-10 | 上海市政工程设计研究总院（集团）有限公司 | Tube well device suitable for layered sampling of underground water in polluted site |
| CN111425186A (en) * | 2020-04-28 | 2020-07-17 | 北京市地质工程勘察院 | Shallow underground water small-caliber cluster type monitoring well and well completion method thereof |
| CN111411901A (en) * | 2020-04-28 | 2020-07-14 | 北京市地质工程勘察院 | Small-caliber shallow groundwater nested monitoring well and well completion method thereof |
| CN113404488A (en) * | 2021-07-28 | 2021-09-17 | 北京建工环境修复股份有限公司 | Underground water nest bundle type layered monitoring well system |
| CN114733890A (en) * | 2022-03-17 | 2022-07-12 | 湖南新九方科技有限公司 | A groundwater restoration and monitoring channel structure in a landfill area |
| CN114733890B (en) * | 2022-03-17 | 2024-04-09 | 湖南新九方科技有限公司 | Underground water restoration and monitoring channel structure in landfill area |
| CN114878767A (en) * | 2022-05-05 | 2022-08-09 | 南京大学 | A laboratory cluster type compound monitoring well |
| CN114878767B (en) * | 2022-05-05 | 2022-12-30 | 南京大学 | Laboratory cluster type composite monitoring well |
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