CN109513738B - Underground pollutant migration control method based on BIM technology - Google Patents
Underground pollutant migration control method based on BIM technology Download PDFInfo
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- CN109513738B CN109513738B CN201811273895.0A CN201811273895A CN109513738B CN 109513738 B CN109513738 B CN 109513738B CN 201811273895 A CN201811273895 A CN 201811273895A CN 109513738 B CN109513738 B CN 109513738B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses an underground pollutant migration control method based on a BIM technology, which comprises the following steps: and establishing a three-dimensional soil layer model containing the polluted region in BIM software to enable the distribution of each stratum in the soil body to be three-dimensionally visualized, determining the migration and diffusion direction of the underground pollutants along with the underground water according to the distribution position of a water-bearing layer and the distribution position of a river in the three-dimensional soil layer model, and finally determining the arrangement positions of the enclosure pile body, the medicament injection well and the extraction well so as to realize the control and restoration of the migration and diffusion of the underground pollutants. The invention has the advantages that: the method has the advantages that a three-dimensional soil layer model is constructed by utilizing the BIM technology according to the explored soil layer data, the distribution of each soil layer and rivers in the soil body is visually displayed, the distribution can be used as the basis for determining the arrangement positions of the fender pile body, the medicament injection well and the extraction well, and the problem that the migration and diffusion of underground pollutants cannot be effectively controlled due to the deviation of the arrangement positions caused by human analysis errors is avoided.
Description
Technical Field
The invention belongs to the technical field of pollutant control, and particularly relates to an underground pollutant migration control method based on a BIM technology.
Background
The underground pollution mainly relates to underground water pollution and soil body pollution, and the underground water pollution is a phenomenon of underground water quality deterioration caused by human factors. The causes of groundwater pollution are mainly: industrial wastewater is directly discharged underground, contaminated surface water invades into underground aquifers, human and animal excreta or water contaminated by excessive use of pesticides permeates underground, and the like. As a result of the contamination, the contents of harmful components such as phenol, chromium, mercury, arsenic, radioactive substances, bacteria, organic substances, etc. in the groundwater are increased. The polluted underground water is harmful to human health and industrial and agricultural production.
At present, for the migration control of underground pollutants, the method mainly adopts the steps of arranging a fender pile body to seal and isolate a polluted area, and then injecting a remediation agent to carry out pollution remediation. However, when the polluted area is large, the cost and the engineering quantity of directly arranging the fender pile body are greatly increased, and engineering personnel cannot visually observe the structural composition of the stratum and the migration and flow trend of groundwater in the stratum.
Disclosure of Invention
The invention aims to provide an underground pollutant migration control method based on the BIM technology, which is based on BIM software to establish a three-dimensional soil layer model containing a polluted area so as to enable the distribution of each stratum in the soil body to be three-dimensionally visualized, and simultaneously determines the migration and diffusion directions of the underground pollutants along with the underground water according to the distribution position of a water-bearing layer and the distribution position of a river in the three-dimensional soil layer model, and finally determines the arrangement positions of a fender pile body, a medicament injection well and an extraction well so as to realize the control and repair of the migration and diffusion of the underground pollutants.
The purpose of the invention is realized by the following technical scheme:
a method for controlling underground pollutant migration based on BIM technology is characterized by comprising the following steps: establishing a three-dimensional soil layer model containing a polluted region in BIM software; determining the distribution position of a water-bearing layer and the distribution position of a river in the three-dimensional soil layer model, and judging the migration direction of underground water according to the distribution position of the water-bearing layer and the distribution position of the river so as to determine the design positions of a medicament injection well and an extraction well in the stratum; establishing a medicament injection well model and an extraction well model in the three-dimensional soil layer model according to the design positions of the medicament injection well and the extraction well, observing whether a medicament injection section on the medicament injection well model is positioned in the aquifer, and if not, adjusting the position of the medicament injection well model to ensure that the injection section on the medicament injection well model is positioned in the aquifer; and constructing a groundwater migration and flow model, calculating and simulating migration influence radius of the medicament in the medicament injection well model along with the groundwater according to the spatial arrangement positions of the medicament injection well model and the extraction well model, the extraction rate of the extraction well and the existing flow speed of the groundwater, and further correcting the arrangement position of each extraction well according to the migration influence radius of the medicament in the medicament injection well model along with the groundwater so that the polluted area can be completely covered and repaired.
The method for determining the migration direction of groundwater according to the distribution position of the aquifer and the distribution position of the river comprises the following steps:
(a) if the river distribution does not exist inside and outside the polluted area, the underground pollutants are migrated and diffused in the depth direction, and the design depth of the extraction well is greater than the depth of the underground pollutants;
(b) if the river distribution exists inside and outside the polluted area, the underground pollutants will migrate and diffuse to the depth direction and to the horizontal direction pointing to or departing from the river, wherein:
if the depth of the aquifer in the polluted area is higher than the water level of the river, the underground pollutants are transferred and diffused in the direction of the river, a fender pile body is arranged between the underground pollutants and the river to prevent the underground pollutants from being transferred and diffused along with the underground water in the direction of the river, and an extraction well is arranged between the underground pollutants and the fender pile body;
if the depth of the aquifer in the polluted area is lower than the water level of the river, migration and diffusion of underground pollutants are carried out in the direction opposite to the river, the enclosure pile body is arranged at the downstream of the migration and diffusion direction of the underground pollutants to prevent the underground pollutants from migrating and diffusing outwards along with underground water, and the extraction well is arranged between the underground pollutants and the enclosure pile body.
The agent injection well is disposed at a source location of the underground contaminant.
The invention has the advantages that: the method has the advantages that a three-dimensional soil layer model is constructed by utilizing the BIM technology according to the explored soil layer data, the distribution of each soil layer and rivers in the soil body is visually displayed, the distribution can be used as the basis for determining the arrangement positions of the fender pile body, the medicament injection well and the extraction well, and the problem that the migration and diffusion of underground pollutants cannot be effectively controlled due to the deviation of the arrangement positions caused by human analysis errors is avoided.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of examples to facilitate understanding by those skilled in the art:
example (b): the embodiment specifically relates to an underground pollutant migration control method based on a BIM technology, which is realized by assistance of a three-dimensional soil layer model constructed based on BIM software and specifically comprises the following steps:
(1) exploring the stratum conditions of the polluted area and the peripheral area thereof, including the layering condition of the soil body and the river distribution condition;
(2) according to exploration data, a three-dimensional soil layer model containing a polluted region and a peripheral region thereof is established in BIM software, and the three-dimensional soil layer model can clearly show the distribution condition of soil layers and the distribution condition of rivers;
(3) by means of the three-dimensional soil layer model, the migration direction of underground water is further judged according to the distribution position of a water-bearing layer and the distribution position of a river, so that the arrangement positions of a medicament injection well, an extraction well and a fender pile body in the stratum are preliminarily determined, and the method comprises the following specific steps:
(3.1) if no river is distributed inside and outside the polluted area, the underground pollutants are migrated and diffused in the depth direction, the design depths of the agent injection well and the extraction well are larger than the migration depth range of the underground pollutants, the agent injection well can inject a repairing agent into a soil body to react with the underground pollutants for repairing, the extraction well can extract underground water, so that the repairing agent flows along with the underground water, the repairing range is improved, the underground pollutants are reduced, and in this case, an enclosing pile body is not required to be additionally arranged;
(3.2) if there is a river distribution inside and outside the polluted region, the underground pollutants will migrate and diffuse to the depth direction and to the horizontal direction pointing to or departing from the river, wherein:
if the depth of a water-bearing layer in a polluted area is higher than the water level of a river, the underground pollutants are migrated and diffused in the direction of the river, a fender pile body is arranged between the underground pollutants and the river to prevent the migration and diffusion of the underground pollutants along with underground water in the direction of the river, an extraction well is arranged between an underground pollutant source and the fender pile body, a medicament injection well is specifically arranged at the source position of the underground pollutants, a repairing medicament can be injected into a soil body by the medicament injection well to react with the underground pollutants for repairing, the extraction well can extract the underground water, so that the repairing medicament flows along with the underground water, the repairing range is improved, and the underground pollutants are reduced;
if the depth of a water-containing layer in a polluted area is lower than the water level of a river, the underground pollutants are migrated and diffused in the direction opposite to the river, a fender pile body is arranged at the downstream of the migration and diffusion direction of the underground pollutants to prevent the underground pollutants from migrating and diffusing outwards along with underground water, an extraction well is arranged between the underground pollutants and the fender pile body, a medicament injection well is specifically arranged at the source position of the underground pollutants, a repairing medicament can be injected into a soil body by the medicament injection well to react with the underground pollutants for repairing, the extraction well can extract the underground water, so that the repairing medicament flows along with the underground water, the repairing range is improved, and the underground pollutants are reduced;
(4) establishing a medicament injection well model and an extraction well model in the three-dimensional soil layer model according to the arrangement positions of the medicament injection well and the extraction well preliminarily determined in the last step, observing whether a medicament injection section on the medicament injection well model is positioned in the aquifer or not by means of the three-dimensional soil layer model, and if not, adjusting the position of the medicament injection well model to enable the injection section on the medicament injection well model to be positioned in the aquifer, wherein the adjustment comprises adjustment on depth and adjustment on horizontal position, so that the medicament injection section is positioned in the aquifer to be injected to be more beneficial to diffusion of the medicament;
(5) constructing an underground water migration and flow model on professional calculation software, calculating and simulating migration influence radius of an inner medicament of the medicament injection well along with underground water according to the spatial arrangement position (comprising a plane coordinate and the arrangement depth of an injection section) of the medicament injection well, the spatial arrangement position (comprising a plane coordinate and the arrangement depth of an extraction section) and the extraction rate of the extraction well and the existing flow speed of the underground water, and further correcting the arrangement position of each extraction well according to the migration influence radius of the medicament in the medicament injection well model along with the underground water, so that the polluted area can be completely covered and repaired.
In short, for migration control of underground pollutants, the embodiment adopts a mode of blocking and enclosing by using the enclosing piles and a mode of reducing the quantity of underground pollutants by adopting a mode of repairing by using agents through the agent injection wells and the agent extraction wells.
The beneficial effect of this embodiment is: the method has the advantages that a three-dimensional soil layer model is constructed by utilizing the BIM technology according to the explored soil layer data, the distribution of each soil layer and rivers in the soil body is visually displayed, the distribution can be used as the basis for determining the arrangement positions of the fender pile body, the medicament injection well and the extraction well, and the problem that the migration and diffusion of underground pollutants cannot be effectively controlled due to the deviation of the arrangement positions caused by human analysis errors is avoided.
Claims (3)
1. A method for controlling underground pollutant migration based on BIM technology is characterized by comprising the following steps: establishing a three-dimensional soil layer model containing a polluted region in BIM software; determining the distribution position of a water-bearing layer and the distribution position of a river in the three-dimensional soil layer model, and judging the migration direction of underground water according to the distribution position of the water-bearing layer and the distribution position of the river so as to determine the design positions of a medicament injection well and an extraction well in the stratum; establishing a medicament injection well model and an extraction well model in the three-dimensional soil layer model according to the design positions of the medicament injection well and the extraction well, observing whether a medicament injection section on the medicament injection well model is positioned in the aquifer, and if not, adjusting the position of the medicament injection well model to ensure that the injection section on the medicament injection well model is positioned in the aquifer; and constructing a groundwater migration and flow model, calculating and simulating migration influence radius of the medicament in the medicament injection well model along with the groundwater according to the spatial arrangement positions of the medicament injection well model and the extraction well model, the extraction rate of the extraction well and the existing flow speed of the groundwater, and further correcting the arrangement position of each extraction well according to the migration influence radius of the medicament in the medicament injection well model along with the groundwater so that the polluted area can be completely covered and repaired.
2. The method for controlling migration of underground pollutants based on the BIM technology as claimed in claim 1, wherein the method for determining the migration direction of underground water according to the distribution position of the aquifer and the distribution position of the river comprises:
(a) if the river distribution does not exist inside and outside the polluted area, the underground pollutants are migrated and diffused in the depth direction, and the design depth of the extraction well is greater than the depth of the underground pollutants;
(b) if the river distribution exists inside and outside the polluted area, the underground pollutants will migrate and diffuse to the depth direction and to the horizontal direction pointing to or departing from the river, wherein:
if the depth of the aquifer in the polluted area is higher than the water level of the river, the underground pollutants are transferred and diffused in the direction of the river, a fender pile body is arranged between the underground pollutants and the river to prevent the underground pollutants from being transferred and diffused along with the underground water in the direction of the river, and an extraction well is arranged between the underground pollutants and the fender pile body;
if the depth of the aquifer in the polluted area is lower than the water level of the river, migration and diffusion of underground pollutants are carried out in the direction opposite to the river, the enclosure pile body is arranged at the downstream of the migration and diffusion direction of the underground pollutants to prevent the underground pollutants from migrating and diffusing outwards along with underground water, and the extraction well is arranged between the underground pollutants and the enclosure pile body.
3. The method for controlling migration of underground pollutants based on BIM technology as claimed in claim 1, wherein the agent injection well is disposed at the source position of underground pollutants.
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| CN111732221A (en) * | 2020-06-16 | 2020-10-02 | 鸿灌环境技术有限公司 | Underground water pollution treatment method |
| CN114011859B (en) * | 2021-10-09 | 2023-04-21 | 华中科技大学 | BIM-based multi-machine teleoperation system for restoring polluted soil and working method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7264713B2 (en) * | 2003-09-03 | 2007-09-04 | Thomas Kryzak | Apparatus, system and method for remediation of contamination |
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| CN101306237A (en) * | 2008-06-13 | 2008-11-19 | 胡科洋 | Method of treating chromium pollution using sludge in sewage plant |
| CN104404973A (en) * | 2014-10-31 | 2015-03-11 | 上海岩土工程勘察设计研究院有限公司 | Precipitation method applied to integrated in-situ remediation of polluted water and soil |
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