CN104360398A - Method for positioning constructed wetland blocked area on basis of two-dimensional resistivity imaging technology - Google Patents

Method for positioning constructed wetland blocked area on basis of two-dimensional resistivity imaging technology Download PDF

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Publication number
CN104360398A
CN104360398A CN201410677119.2A CN201410677119A CN104360398A CN 104360398 A CN104360398 A CN 104360398A CN 201410677119 A CN201410677119 A CN 201410677119A CN 104360398 A CN104360398 A CN 104360398A
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China
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resistivity
dimensional
artificial swamp
pole
survey line
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CN201410677119.2A
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Chinese (zh)
Inventor
丁彦礼
解庆林
白少元
孙琳
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桂林理工大学
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Publication of CN104360398A publication Critical patent/CN104360398A/en

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Abstract

The invention discloses a method for positioning a constructed wetland blocked area on the basis of the two-dimensional resistivity imaging technology. The method includes the steps of firstly, conducting a two-dimensional apparent resistivity section survey through the high-intensity resistivity method and three-pole rectangular AMN and MNB devices by reasonably arranging survey lines and setting collection parameters on the premise of the resistivity difference between the blocked packing area and the non-blocked packing area and on the basis of collecting and analyzing existing constructed wetland resources; secondly, conducting two-dimensional inversion on the two three-pole apparent resistivity sections obtained through measurement, converting apparent resistivity data into resistivity data, drawing the contour map of the resistivity sections, and achieving constructed wetland two-dimensional resistivity imaging; thirdly, achieving the aim of positioning the constructed wetland blocked area according to the two-dimensional resistivity imaging characteristics and the resistivity difference analysis. The method is economical and easy to conduct and can fill in the technical gaps in the constructed wetland blocked area two-dimensional positioning, and the powerful technical guarantees are provided for continuous and efficient running of constructed wetlands.

Description

Based on the method in artificial swamp blocking region, Two Dimensional Resistivity imaging technique location

Technical field

The invention belongs to technical field of sewage, be specifically related to a kind of method based on artificial swamp blocking region, Two Dimensional Resistivity imaging technique location.

Background technology

Constructed wetland waste water treatment technology is a kind of sewage treatment ecological engineering technology that 20 century 70s rise, and the advantages such as dirigibility is good owing to having, small investment, energy consumption are low, dirt-removing power is comparatively strong, convenient management, non-secondary pollution, apply more prevalent.But in recent years, artificial swamp frequently occurs the problems such as blocking in operational process, purifying property declines, and tenure of use shortens.As in 355 drowned flow artificial wet lands of the U.S. and Britain, nearly half blocks in 5 years in use, filler hydraulic conductivity declines to a great extent, the current of 80% are directly by bed surface more stream discharge system, effluent quality worsens, the length of service is reduced to 10 years by 50-100 when designing, 5 years even shorter; Also there is latch up phenomenon in various degree in the domestic artificial swamp such as white clay hole, wild goose field, Shatian.Visible, the blockage problem of artificial wet land system inside has badly influenced lasting, the Effec-tive Function of artificial swamp.

At present, more single to the research method of artificial swamp generation judgment of clogging, be all study artificial swamp hydraulic performance characteristics based on the apparent hydraulic detention time (HRT) of tracer experiment and residence time destribution (RDT), and determine whether artificial swamp blocks by artificial swamp hydraulic performance.But this method determining to block all is evaluated for artificial swamp entirety, cannot position blocking region, cause and can only be directed to artificial swamp entirety carry out replacing filler or dredging when improvement blocking, time cost is high, deficiency in economic performance.Therefore, the accurate location for artificial swamp blocking region is problem demanding prompt solution.

Resistivity method is based on the conductivity difference of medium, carrys out probing medium structure, understand dielectric distribution feature by the regularity of distribution of the Direct electric current field observed and study artificial foundation.Resistivity method is mainly used in the fields such as mineral exploration, engineering investigation, urban geological environment prospecting now, and Measures compare is ripe.In recent years by independence or be united and applied in the environmental areas such as landfill waste, Oil spills, groundwater contamination and the investigation of salt-fresh water coexistence, achieve good effect.

And High Density Resistivity is with regard to its ultimate principle, identical with traditional resistivity method, be wherein a kind of research method of resistivity method.The difference of high-density electric and traditional resistor rate method is embodied in field work mode, consider that from outdoor operation method aspect High Density Resistivity is exactly a kind of array method of exploration, one of widely used a kind of geophysical method in engineering investigation field in recent years, in the middle of the engineering investigation being used for middle-shallow layer.Wherein, the high-density electric of two dimension at the application aspect comparative maturity of engineering investigation, but have not been reported the aspect, location that this technology is applied to artificial swamp blocking region.

So, the present invention is based on the successful experience of High Density Resistivity in engineering investigation application, for blind area and the difficult point of the blocking region Position Research of artificial swamp, propose a kind of method based on artificial swamp blocking region, Two Dimensional Resistivity imaging technique location.The method is premised on the resistivity contrasts blocking filler region and do not block filler region, first the apparent resistivity of Measure section is carried out by High Density Resistivity, apply DC resistivity two-dimensional inversion method again, apparent resistivity data is converted to (very) resistivity data of artificial swamp Measure section; Then draw the resistivity isogram of Measure section, realize Two Dimensional Resistivity imaging; Finally by the method for analysis of two-dimensional resistivity imaging section, reach the object in detection artificial swamp blocking region.

Summary of the invention

The object of the invention is the blockage problem existed for artificial swamp, provide a kind of Two Dimensional Resistivity imaging technique to locate the method in artificial swamp blocking region, the method economy and facility, the technological gap of artificial swamp blocking region two-dimensional localization can be filled up.

Concrete steps are:

(1) collect basic situation and the operational factor of artificial swamp, comprise the cycle of operation of artificial swamp, bed structure, filler, Inlet and outlet water and hydraulic performance, with guide data collection, data processing and analysis.

(2) adopt High Density Resistivity to gather two-dimensional cross-section apparent resistivity data, first above artificial swamp, arrange high density survey line, interval of survey line adjusts according to artificial swamp scale and blocking region positioning accuracy request, generally adopts 50 ~ 200cm; Measuring point spacing is also adjust according to artificial swamp scale and blocking region location survey accuracy requirement, generally adopts 10 ~ 50cm.

(3) three very high-density measurement mechanisms arranged by the high density survey line laid in step (2), adopts three pole equipment AMN and three pole deinstall MNB to carry out two segment data collections, to realize all standing of section below survey line.

(4) measurement pole span parameter is set: measurement mechanism adopts " rectangular devices " to measure; The maximum pole span AO that powers selects AO >=2H to measure, and wherein H is the Performance of Constructed Wetlands Substrates degree of depth; Two three-pole device " infinite distance " poles are perpendicular to line direction cloth pole, and distance survey line is greater than 5 times of AO.

(5) measure: first, arrange three pole equipment AMN devices, power cathode B is connected on " infinite distance " and extremely goes up, configuration of electrodes adopts " rectangle AMN " device, measures and obtains an apparent resistivity rectangular cross section; Then, arrange three pole deinstall MNB devices, positive source A is connected on " infinite distance " and extremely goes up, and configuration of electrodes adopts " rectangle MNB " device, measures and obtains an apparent resistivity rectangular cross section.

(6) inverting: because apparent resistivity pseudosection is not obvious to anomalous reflection, and positioning precision is not high, so measure the apparent resistivity pseudosection obtained to step (5) with carry out joint inversion, obtain the resistivity section below this survey line.

(7) draw: resistivity section isogram is drawn to the resistivity section that step (6) obtains, realizes this survey line artificial swamp Two Dimensional Resistivity imaging.

(8) positioning analysis: the region that do not block of artificial swamp shows as rather low resistance rate characteristic, blocking region shows as relative high resistivity feature; Therefore, the resistivity section obtained based on inverting and Two Dimensional Resistivity imaging features, the locus of high resistivity imaging region distribution just correspond to the blocking locus of region on this survey line, and both exists correlativity closely.

(9) continued the measurement of other survey line by step (3) ~ (8), can determine to block the space distribution of region at whole constructed wetland bed body.

Advantage of the present invention is: the present invention is directed to the blocking region Position Research shortage of artificial swamp and the problem of two-dimensional localization technological gap, a kind of method based on artificial swamp blocking region, Two Dimensional Resistivity imaging technique location is proposed, the method is based on the resistivity contrasts blocking filler region and do not block filler region, analyze according to Two Dimensional Resistivity imaging technique and imaging section resistivity contrasts, reach the object in detection artificial swamp blocking region, and the technological gap of artificial swamp blocking region two-dimensional localization can be filled up.Lasting, Effec-tive Function for artificial swamp, by promoting, are provided strong technical guarantee by this technology.

Accompanying drawing explanation

Fig. 1 is the method flow diagram of the embodiment of the present invention based on artificial swamp blocking region, Two Dimensional Resistivity imaging technique location.

Fig. 2 embodiment of the present invention three pole equipment AMN section survey schematic diagram.

Mark in figure: 2-1 is potential electrode and type of device; 2-2 is apparent resistivity on Measure section data acquiring location is illustrated.

Fig. 3 embodiment of the present invention three pole deinstall MNB section survey schematic diagram.

Mark in figure: 3-1 is potential electrode and type of device; 3-2 is apparent resistivity on Measure section data acquiring location is illustrated.

There is not the artificial swamp Two Dimensional Resistivity image blocked in Fig. 4 embodiment of the present invention 1.

There is the artificial swamp Two Dimensional Resistivity image of blocking in Fig. 5 embodiment of the present invention 2.

Mark in figure: 5-1 resistivity high resistance area and artificial swamp blocking region; 5-2 resistivity normal region and artificial swamp do not occur to block region.

Embodiment

Below in conjunction with specific embodiment, illustrate the present invention further.

Principle of work of the present invention is: the region that do not block of general artificial swamp shows as rather low resistance rate characteristic, artificial swamp blocking blocking region shows as relative high resistivity feature, if there is blocking region in artificial swamp, on Two Dimensional Resistivity image, according to the space distribution of blocking region, location, locus on this survey line of high resistivity imaging region distribution.Here is two specific embodiments under this guidance of principle.

Embodiment 1:

There is not the artificial swamp Two Dimensional Resistivity imaging technique blocked.

The flow process in region is blocked as shown in Figure 1 based on Two Dimensional Resistivity imaging technique location artificial swamp, on the basis of collection analysis artificial swamp available data, reasonable Arrangement survey line and arrange acquisition parameter, by high-density resistivity measuring method, gathers the apparent resistivity pseudosection obtained below survey line; Then two dimensional inversion is carried out to the apparent resistivity pseudosection gathered, apparent resistivity data is converted to resistivity data, and draws resistivity section isogram, realize Two Dimensional Resistivity imaging; Finally by the method for analysis of two-dimensional resistivity imaging section, reach the object in detection artificial swamp blocking region.

Concrete steps are:

(1) arrangement of measuring-line: arrange high density survey line above artificial swamp, interval of survey line 50cm; Measuring point spacing 10cm; " infinite distance " pole is perpendicular to line direction cloth pole, and distance survey line distance is 400cm.。

(2) measure: first, arrange three poles equipment AMN device (as Fig. 2), power cathode B is connected on " infinite distance " and extremely goes up, configuration of electrodes adopts " rectangle AMN " device, measures and obtains an apparent resistivity section; Then, arrange three poles deinstall MNB device (as Fig. 3), positive source A is connected on " infinite distance " and extremely goes up, and configuration of electrodes adopts " rectangle MNB " device, measures and obtains an apparent resistivity section.

(3) inverting: step (2) is measured to the apparent resistivity pseudosection obtained with carry out joint inversion, obtain the resistivity section below this survey line.

(4) draw: resistivity section isogram is drawn to the resistivity section that step (3) inverting obtains, realizes this survey line artificial swamp Two Dimensional Resistivity imaging (as Fig. 4).

(5) positioning analysis: as can be seen from the Two Dimensional Resistivity image of Fig. 4, most of zone resistance rate value, at 55 ~ 65 Ω m, occurs without obvious high resistance region, judges that the constructed wetland bed body below this survey line blocks.

Embodiment 2:

There is the artificial swamp Two Dimensional Resistivity imaging technique in blocking region.

This embodiment detection analysis flow process is as Fig. 1.

Concrete steps are:

(1) arrangement of measuring-line: arrange high density survey line above artificial swamp, interval of survey line 50cm; Measuring point spacing 10cm; " infinite distance " pole is perpendicular to line direction cloth pole, and distance survey line distance is 400cm.。

(2) AMN measurement device: first, arrange three poles equipment AMN device (as Fig. 2), power cathode B is connected on " infinite distance " and extremely goes up, and configuration of electrodes adopts " rectangle AMN " device; During measurement, M, N in 2-1 are motionless, and A pointwise is moved to the left, and obtain a rolling wire, then A, M, N move right an electrode simultaneously, and M, N are motionless, and A again pointwise is moved to the left, obtain another rolling wire, so continuous tolling measurement goes down, and obtains an apparent resistivity rectangular cross section 2-2.

(3) MNB measurement device: first, arrange three poles deinstall MNB device (as Fig. 3), positive source A is connected on " infinite distance " and extremely goes up, and configuration of electrodes adopts " rectangle MNB " device; During measurement, M, N in 3-1 are motionless, and B pointwise moves right, and obtain a rolling wire, then M, N, B move right an electrode simultaneously, and M, N are motionless, and B again pointwise moves right, obtain another rolling wire, so continuous tolling measurement goes down, and obtains an apparent resistivity rectangular cross section 3-2.

(4) inverting: the apparent resistivity pseudosection obtained is measured to step (2) and (3) with carry out joint inversion, obtain the resistivity section below this survey line.

(5) draw: resistivity section isogram is drawn to the resistivity section that inverting obtains, realizes artificial swamp Two Dimensional Resistivity imaging (as Fig. 5), carry out according to Two Dimensional Resistivity imaging features on survey line the location blocking region.

(6) positioning analysis: as can be seen from the Two Dimensional Resistivity image of Fig. 5,5-2 indication zone resistance rate value, at 60 Ω about m, is the background resistivity value of this artificial swamp, for artificial swamp does not block region; 5-1 indication zone resistance rate value >80 Ω m, be high resistance region, this regional center coordinate is (240cm, 20cm), is the blocking region existed in this section.

(7) continued the measurement of other survey line by step (2) ~ (6), can determine to block the space distribution of region at whole constructed wetland bed body.

The above; it is only preferred embodiment of the present invention; these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention; after having read the present invention; any simple modification that those skilled in the art do above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong to the protection domain of technical solution of the present invention.

Claims (1)

1., based on the method in artificial swamp blocking region, Two Dimensional Resistivity imaging technique location, it is characterized in that concrete steps are:
(1) collect basic situation and the operational factor of artificial swamp, comprise the cycle of operation of artificial swamp, bed structure, filler, Inlet and outlet water and hydraulic performance, with guide data collection, data processing and analysis;
(2) adopt High Density Resistivity to gather two-dimensional cross-section apparent resistivity data, first above artificial swamp, arrange high density survey line, interval of survey line adjusts according to artificial swamp scale and blocking region positioning accuracy request, generally adopts 50 ~ 200cm; Measuring point spacing is also adjust according to artificial swamp scale and blocking region location survey accuracy requirement, generally adopts 10 ~ 50cm;
(3) three very high-density measurement mechanisms arranged by the high density survey line laid in step (2), adopts three pole equipment AMN and three pole deinstall MNB to carry out two segment data collections, to realize all standing of section below survey line;
(4) measurement pole span parameter is set: measurement mechanism adopts " rectangular devices " to measure; The maximum pole span AO that powers selects AO >=2H to measure, and wherein H is the Performance of Constructed Wetlands Substrates degree of depth; Two three-pole device " infinite distance " poles are perpendicular to line direction cloth pole, and distance survey line is greater than 5 times of AO;
(5) measure: first, arrange three pole equipment AMN devices, power cathode B is connected on " infinite distance " and extremely goes up, configuration of electrodes adopts " rectangle AMN " device, measures and obtains an apparent resistivity rectangular cross section; Then, arrange three pole deinstall MNB devices, positive source A is connected on " infinite distance " and extremely goes up, and configuration of electrodes adopts " rectangle MNB " device, measures and obtains an apparent resistivity rectangular cross section;
(6) inverting: because apparent resistivity pseudosection is not obvious to anomalous reflection, and positioning precision is not high, so measure the apparent resistivity pseudosection obtained to step (5) with carry out joint inversion, obtain the resistivity section below this survey line;
(7) draw: resistivity section isogram is drawn to the resistivity section that step (6) obtains, realizes this survey line artificial swamp Two Dimensional Resistivity imaging;
(8) positioning analysis: the region that do not block of artificial swamp shows as rather low resistance rate characteristic, blocking region shows as relative high resistivity feature; Therefore, the resistivity section obtained based on inverting and Two Dimensional Resistivity imaging features, the locus of high resistivity imaging region distribution just correspond to the blocking locus of region on this survey line, and both exists correlativity closely;
(9) continued the measurement of other survey line by step (3) ~ (8), can determine to block the space distribution of region at whole constructed wetland bed body.
CN201410677119.2A 2014-11-23 2014-11-23 Method for positioning constructed wetland blocked area on basis of two-dimensional resistivity imaging technology CN104360398A (en)

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Cited By (14)

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CN105137490A (en) * 2015-08-28 2015-12-09 桂林理工大学 Method of positioning constructed wetland obstruction area based on wire power source power supply and measurement technology
CN105352869A (en) * 2015-11-11 2016-02-24 中国科学院水生生物研究所 Constructed wetland blocking monitoring device, and preparation method and application thereof
CN105445330A (en) * 2015-11-16 2016-03-30 河海大学 Method for measuring distribution and depth of cracks in soil
CN106093131A (en) * 2016-06-16 2016-11-09 太原理工大学 A kind of paste filling pipe plugging monitoring device and method
CN106838630A (en) * 2016-12-26 2017-06-13 上海岩土工程勘察设计研究院有限公司 A kind of method for large-scale draining pipe culvert leak detection
WO2018107920A1 (en) * 2016-12-15 2018-06-21 山东大学 Method for detecting blockage in subsurface flow constructed wetland
CN108558018A (en) * 2018-06-25 2018-09-21 桂林理工大学 The small-sized artificial swamp for monitoring blocking
CN108609739A (en) * 2018-06-25 2018-10-02 桂林理工大学 The blocking in-situ monitoring artificial swamp of pre-buried more monitoring rods
CN108609738A (en) * 2018-06-25 2018-10-02 桂林理工大学 The blocking in-situ monitoring artificial swamp of enclosure wall insertion monitoring electrode
CN108773905A (en) * 2018-06-25 2018-11-09 桂林理工大学 The ecology filtration system of blocking can be monitored
CN108828675A (en) * 2018-06-25 2018-11-16 桂林理工大学 A kind of artificial swamp blocking region detection method for strengthening resistivity contrasts
CN108821441A (en) * 2018-06-25 2018-11-16 桂林理工大学 A method of it is monitored and is blocked using small-scale artificial wetland
CN108862601A (en) * 2018-06-25 2018-11-23 桂林理工大学 Utilize the method for ecology filtration system monitoring blocking
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CN105137490B (en) * 2015-08-28 2018-09-11 桂林理工大学 The method for positioning artificial swamp blocking region based on line power supply power supply and measuring technique
CN105137490A (en) * 2015-08-28 2015-12-09 桂林理工大学 Method of positioning constructed wetland obstruction area based on wire power source power supply and measurement technology
CN105352869A (en) * 2015-11-11 2016-02-24 中国科学院水生生物研究所 Constructed wetland blocking monitoring device, and preparation method and application thereof
CN105445330A (en) * 2015-11-16 2016-03-30 河海大学 Method for measuring distribution and depth of cracks in soil
CN106093131A (en) * 2016-06-16 2016-11-09 太原理工大学 A kind of paste filling pipe plugging monitoring device and method
WO2018107920A1 (en) * 2016-12-15 2018-06-21 山东大学 Method for detecting blockage in subsurface flow constructed wetland
US10684241B2 (en) 2016-12-15 2020-06-16 Shandong University Method for detecting clogging of subsurface flow constructed wetland
CN106838630A (en) * 2016-12-26 2017-06-13 上海岩土工程勘察设计研究院有限公司 A kind of method for large-scale draining pipe culvert leak detection
CN108558018A (en) * 2018-06-25 2018-09-21 桂林理工大学 The small-sized artificial swamp for monitoring blocking
CN108609738A (en) * 2018-06-25 2018-10-02 桂林理工大学 The blocking in-situ monitoring artificial swamp of enclosure wall insertion monitoring electrode
CN108773905A (en) * 2018-06-25 2018-11-09 桂林理工大学 The ecology filtration system of blocking can be monitored
CN108828675A (en) * 2018-06-25 2018-11-16 桂林理工大学 A kind of artificial swamp blocking region detection method for strengthening resistivity contrasts
CN108821441A (en) * 2018-06-25 2018-11-16 桂林理工大学 A method of it is monitored and is blocked using small-scale artificial wetland
CN108862601A (en) * 2018-06-25 2018-11-23 桂林理工大学 Utilize the method for ecology filtration system monitoring blocking
CN108862602A (en) * 2018-06-25 2018-11-23 桂林理工大学 The blocking in-situ monitoring method of pre-buried more monitoring rods
CN108828675B (en) * 2018-06-25 2019-11-26 桂林理工大学 A kind of artificial swamp blocking region detection method for strengthening resistivity contrasts
CN108609739A (en) * 2018-06-25 2018-10-02 桂林理工大学 The blocking in-situ monitoring artificial swamp of pre-buried more monitoring rods

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