CN107632322B - A kind of exploitation method of the cable system suitable for waters electrical prospecting - Google Patents
A kind of exploitation method of the cable system suitable for waters electrical prospecting Download PDFInfo
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- CN107632322B CN107632322B CN201710644904.1A CN201710644904A CN107632322B CN 107632322 B CN107632322 B CN 107632322B CN 201710644904 A CN201710644904 A CN 201710644904A CN 107632322 B CN107632322 B CN 107632322B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention discloses a kind of cable systems and exploitation method suitable for waters electrical prospecting, utilize ultrasonic distance measurement unit and airbag apparatus, Cable Testing System used in original land electrical prospecting and device are improved, the Cable Testing System and method of the waters electrical prospecting of complete set are obtained, gained technology can provide better safety guarantee in water areas project prospecting.
Description
Technical field
The present invention relates to waters electrical prospecting system regions, specifically a kind of cable system suitable for waters electrical prospecting
And exploitation method.
Background technique
With the rapid development of social economy, the road and bridge in the whole country and Subway Facilities construction also accelerate step
It cuts down, the implementation of part of engineering will be passed through via the water-bed lower section of rivers, lake or ocean, in order to guarantee the smooth of engineering
Carry out and reduce the maintenance cost in later period, early period need to the fluctuating situation of distribution and bedrock surface to stratum below the bottom fill
The understanding divided.Currently, more limiting to for the geophysical method of water areas project prospecting, it is divided into shallow earthquake waterborne, wink substantially
Power transformation magnetic and DC electrical method, wherein shallow earthquake is unfavorable in shallow water face, water-bed stratum is thicker and cobble area is explored；Transition
Electromagnetism is influenced more serious by low-resistance coating；DC electrical method has great advantages compared with the above two, utilizes in the exploration of waters
It is more.But during D.C. method, the selection of observation system and survey line is mostly according to land electrical prospecting, not yet
The system for forming oneself.The especially cable measuring of waters electrical method often directlys adopt land electrical prospecting wireline test system
It unites, is sunken to the water-bed floating material that either adheres on survey line using self gravity in system placement process and places it in water surface progress
Exploration, and it can not be placed in the water-bed above certain depth of the water surface or less and be explored, wherein in the case of manual operation often without
Method meets the consistency of each electrode, and biggish human error easy to form is unable to satisfy the required precision of waters exploration.Therefore
Design it is a kind of be satisfied with different type waters exploration cable be very necessary and urgent problem to be solved.
The object of the present invention is to provide a kind of cable system suitable for waters electrical prospecting and exploration sides for summary of the invention
Method, to solve the problems, such as to think that error is big existing for the electrical prospecting of prior art waters.
In order to achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of cable system suitable for waters electrical prospecting, including cable body, it is characterised in that: in cable body
It is divided into two mutually isolated enclosure spaces in the radial direction, the space of middle and upper part is set as air bag, axial one end of air bag
It is connected to by gas circuit pipe with outside air compressor, is parallel to the same radial electricity of cable body equipped with multiple in the space of lower part
Pole, lower space axial direction one end extend to extended line, and extended line axial outer end is equipped with the cable plug of spininess, each electrode difference
It is connected one to one by conducting wire and the connection stitch in cable plug, at the top of cable body right above corresponding each electrode respectively
It further include parallel electrical prospecting apparatus, digital indicator equipped with ultrasonic distance measurement unit, each ultrasonic distance measurement unit is aobvious with number respectively
Show that instrument is connected by wireless signal communication, each electrode is connected by cable plug with parallel electrical prospecting apparatus.
A kind of cable system suitable for waters electrical prospecting, it is characterised in that: the ultrasonic distance measurement unit
Including ultrasonic transmitter, ultrasonic receiver, with the control circuit of radio function, it is the input terminal of ultrasonic transmitter, super
The output end of acoustic receiver is respectively connected to control circuit, and control circuit passes through wireless signal and digital display communication connection.
A kind of waters electrical prospecting method of cable system, it is characterised in that: the following steps are included:
(1), cable body is integrally placed at below the water surface, by air compressor to inflation/deflation in air bag, makes cable
Body is integrally sunken to water surface following depth, measures spacing between each electrode and the water surface using each ultrasonic distance measurement unit,
And the data based on digital indicator carry out feedback control, are consistent spacing between each electrode and the water surface, finally utilize
The apparent resistivity data of each electrode of parallel electrical prospecting apparatus collection in worksite, apparent resistivity data are by collected potential difference and electricity
Stream ratio obtains, in particular to each electrode corresponds to the apparent resistivity data of search coverage objective body, be herein water body and
The apparent resistivity of rock stratum below water body；
(2), exploration apparent resistivity data in waters is handled and at figure:
(2.1), the collected initial data of parallel electrical prospecting apparatus is imported into WBD solution and compiles software, and input the seat of each electrode
It marks, under two dimensional cross-section, usually defining a certain electrode coordinate is (0,0), and remaining electrode coordinate is according to electrode spacing and opposite definition
The distance of electrode points establishes coordinate, carries out the calculating of related apparent resistivity, and rejects the apparent resistivity prospecting in acquisition whole district section
Value, finally exports apparent resistivity data；
(2.2), then using Surfer Become the picture software open dat format apparent resistivity data, carry out gridded data,
Gridding method, grid dividing size and Exception Filter data basic handling process are selected, can choose filter according to actual needs
Wave device is filtered to data and carries out albefaction, by aforesaid operations handle it is final obtain apparent resistivity data directly at
Figure；
(3), waters explores apparent resistivity inversion procedure and at figure:
(3.1), data prediction is carried out using apparent resistivity data of the electrical method data collection system to dat format, successively
It calculated including resistivity data, import coordinate, routine data solution is compiled, rejects jump point, the export several steps of RES2DINV formatted file
Suddenly；
(3.2), inverting is then carried out by LOKE software, according to field geology situation in combination with reality when inversion procedure
The quality of data acquisition selects suitable inversion method；
(3.3), finally according to inversion result, handle at figure using Surfer Become the picture software, obtain apparent resistivity number
According to inverting at figure；
(4), the evaluation of underwater geological conditions overview: by apparent resistivity data direct mapping and apparent resistivity data inverting at
Figure, and survey area borehole data is combined, physical property geological analysis is carried out to region using resistivity isogram, resistance herein
Rate isogram refers to above-mentioned apparent resistivity map and apparent resistivity inversion chart, usually using surfer software to apparent resistance
Rate data volume carries out being meshed into figure, if it is acline that isopleth, which divides more uniform and smooth explanation, when a certain depth
When following resistivity is high compared with upper formation, can judge substantially its for bedrock surface, while isopleth occur recess and protrusion can be considered
Construction influences so that stratum occurs to oblique, anticline or tomography.
The present invention is mainly inside cable and surface increases airbag apparatus and ultrasonic distance measurement unit, air bag are for water
Make the gravity of cable itself be equal to buoyancy when using in domain in the deflated condition, can be explored on the water surface；Ultrasound
It is mainly accurately measured using height of the ultrasonic wave to each electrode distance water surface away from unit, in order to can be in water
Different depth carries out multi-fold exploration under face, increases data volume and improves inversion accuracy.The improved cable of invention gained is substantially full
The demand of the existing waters electrical prospecting of foot, can effectively reduce because of the improper bring error of manual operation.
Compared with the prior art, the beneficial effects of the present invention are embodied in:
1, electrical prospecting cable in waters can be floated independently on the water surface and be used, change it is previous artificial apply the materials such as foam in
The status that cable surface floats it, greatly reduces because manual operation causes unnecessary error.
2, airbag apparatus therein according to the difference of exploration demand, can change the size of aeration quantity to change buoyancy, make
Cable can be located at different depth below the water surface and carry out using and being unlikely to that the bottom can only be sunken to and explored.
3, the ultrasonic distance measurement unit right above electrode can determine the height of each electrode distance water surface in real time, so as to
The whole survey line of the guarantee of degree of precision is in same level height, and survey line itself is avoided to generate depth displacement so as to cause depth of exploration
It is different, unnecessary error is brought on final Interpretation On The Results.
Detailed description of the invention
Fig. 1 is whole device system general arrangement schematic of the present invention.
Fig. 2 is whole device system entirety sectional view of the present invention.
Fig. 3 is ultrasonic distance measurement cell operation schematic diagram of the present invention.
Fig. 4 is 1m apparent resistivity inverting sectional view below the water surface of the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of cable system suitable for waters electrical prospecting, including cable body 1, cable body
It is divided into two mutually isolated enclosure spaces on 1 inner radial direction, the space of middle and upper part is set as air bag 2, the axis of air bag 2
It is connected to one end by gas circuit pipe with outside air compressor 3, to be parallel to cable body same equipped with multiple in the space of lower part
Radial electrode 4, lower space axial direction one end extend to extended line 7, and 7 axial outer end of extended line is equipped with the cable plug 5 of spininess,
Each electrode passes through conducting wire respectively and connects one to one with the connection stitch in cable plug 5, corresponding each at the top of cable body 1
It is respectively equipped with ultrasonic distance measurement unit 6 right above electrode, further includes parallel electrical prospecting apparatus, digital indicator, each ultrasonic distance measurement
Unit 6 is connect with digital indicator by wireless signal communication respectively, and each electrode 4 passes through cable plug and parallel electrical prospecting apparatus electricity
Connection.
As shown in figure 3, ultrasonic distance measurement unit includes ultrasonic transmitter, ultrasonic receiver, with radio function
Control circuit, the input terminal of ultrasonic transmitter, the output end of ultrasonic receiver are respectively connected to control circuit, and control circuit is logical
Cross wireless signal and digital display communication connection.
Electrical prospecting electrode spacing in waters can choose 1m ~ 5m unequal spacing according to actual needs, and the present invention chooses 4m spacing electricity
Cable, cable overall length 180m, number of electrodes 32, wherein electrodeless length about 56m, electrode section length 124m.Two are selected when actual measurement
Root cable carries out rolling test, rolls the collecting work for completing an arrangement every time.Cable arranges in test system process for the first time,
Cable expanding is distributed in water by other devices, the later period, which needs to adjust air bag at most according to exploration, floats on it one in water body
During which given layer position passes through the height of each electrode distance water surface of the implementable wireless receiving of handheld digital display instrument.
The acquisition of waters exploration apparent resistivity data: the acquisition of apparent resistivity data, acquisition are carried out using parallel electrical prospecting apparatus
Parameter is according to depending on on-the-spot test condition.Parallel electrical method is divided into AM method and ABM method according to the difference of supply terminals, data acquisition modes
Two kinds.Setting power-on time is 0.5s, acquisition time 50ms when wherein AM method acquires；Power-on time is arranged when acquiring in ABM method
For 0.2s, acquisition time 100ms.Therefore, parallel electrical prospecting apparatus can collect the data volume of magnanimity in a short time, thus greatly
The time of test macro collecting work in the water surface and water is shortened greatly, also, we can according to need and arbitrarily extract phase
Answer the apparent resistivity data of device.Meanwhile the size by regulating and controlling air bag indirectly controls the buried depth of survey line, so as to according to need
It asks to obtain the apparent resistivity data within the scope of water surface following depth.
Waters exploration apparent resistivity data is handled and at figure: its process includes that (1) leads the collected initial data of instrument
Enter WBD solution and compile software, input electrode coordinate carries out the calculating of related apparent resistivity, and rejects the apparent resistance in acquisition whole district section
Rate exceptional value finally exports the apparent resistivity data of related device；(2) view of dat format is opened using Surfer Become the picture software
Resistivity data carries out gridded data, selection natural neighbor interpolation carries out gridding division, grid dividing size and Exception Filter
The basic handlings process such as data selects filter to be filtered to data and carry out albefaction, by above-mentioned according to actual needs
Operation processing finally obtains the apparent resistivity data figure of related device.
Explore apparent resistivity inversion procedure and at figure in waters: the apparent resistivity value of each point in collection in worksite section, in order to
The image for being able to reflect true resistance rate distribution situation in test waters is obtained, the refutation process based on measurement data is carried out,
The inverting carries out processing operation by LOKE software.Data basic process mainly includes three zones module: pretreatment mould
Block, data inversion processing module, data result are at figure processing module.
Data prediction mainly uses electrical method data collection system, and basic procedure includes that resistivity data is calculated, imported
Coordinate, routine data solution are compiled, reject jump point, export RES2DINV formatted file.Data inversion processing is soft based on LOKE isoinversion
Part platform provides a variety of inversion methods in Inversion Software, and which includes damped least square method inverting, round and smooth model are anti-
It drills, antinoise inverting, quality selection acquire according to field geology situation in combination with real data when inversion procedure is suitably
Inversion method, so that inverting obtains optimal result.Main flow are as follows: selection damped least square method carries out inverting, setting number
According to noise criteria (damped coefficient 0.1), inverting the number of iterations (6 times), Finite Difference Meshes size (grid node 2) and maximum
The parameters such as square error.Data result mainly uses Surfer Become the picture software handle at figure at figure processing module, main to flow
Journey is the same as step 3 (2).
The evaluation of underwater geological conditions overview: it is surveyed by apparent resistivity direct mapping and apparent resistivity inverting at figure result and combination
Exploratory area domain borehole data carries out Fine structural interpretation to geologic aspects within the scope of water-bed following depth.Attached drawing 3 is one in actual measurement
Divide exploration line apparent resistivity inverting sectional view, exploration line is located at 1m, electrode spacing 4m below the water surface, totally 64 electrodes.It can by Fig. 4
, without special tectonic in water-bed lower section 38m depth or so range, rock stratum is more horizontal.It is wherein compared and is shown according to drilling data:
The lithology that resistivity is located at 0 ~ 3 Ω m is mainly mud, muck soil, and generally resistivity value is lower below water body, with depth
The increase of degree, the resistivity value broken up in layer gradually increase.
Claims (2)
1. a kind of waters electrical prospecting method of the cable system suitable for waters electrical prospecting, the cable system includes cable
Cable body, it is characterised in that: it is divided into two mutually isolated enclosure spaces in cable body in radial directions, middle and upper part
Space is set as air bag, and axial one end of air bag is connected to by gas circuit pipe with outside air compressor, is equipped in the space of lower part more
A to be parallel to the same radial electrode of cable body, lower space axial direction one end extends to extended line, and extended line axial outer end is set
There is the cable plug of spininess, each electrode passes through conducting wire respectively and connects one to one with the connection stitch in cable plug, cable
It is respectively equipped with ultrasonic distance measurement unit right above corresponding each electrode at the top of cable body, further includes parallel electrical prospecting apparatus, digital indicator,
Each ultrasonic distance measurement unit is connect with digital indicator by wireless signal communication respectively, each electrode by cable plug with
Parallel electrical prospecting apparatus is connected；
The waters electrical prospecting method of the cable system, comprising the following steps:
(1), cable body is integrally placed at below the water surface, by air compressor to inflation/deflation in air bag, keeps cable body whole
Body is sunken to water surface following depth, measures spacing between each electrode and the water surface, and base using each ultrasonic distance measurement unit
Feedback control is carried out in the data of digital indicator, is consistent spacing between each electrode and the water surface, finally using parallel
The apparent resistivity data of each electrode of electrical prospecting apparatus collection in worksite, apparent resistivity data are by collected potential difference and electric current ratio
Value obtains, in particular to each electrode corresponds to the apparent resistivity data of search coverage objective body, is herein water body and water body
The apparent resistivity of lower section rock stratum；
(2), exploration apparent resistivity data in waters is handled and at figure:
(2.1), the collected initial data of parallel electrical prospecting apparatus is imported into WBD solution and compiles software, and input the coordinate of each electrode, two
It ties up under section, defining a certain electrode coordinate is (0,0), and remaining electrode coordinate defines the remote of electrode points according to electrode spacing and relatively
Coordinate is closely established, the calculating of related apparent resistivity is carried out, and rejects the apparent resistivity prospecting value in acquisition whole district section, is finally exported
Apparent resistivity data；
(2.2), the apparent resistivity data of dat format is then opened using Surfer Become the picture software, carries out gridded data, selection
Gridding method, grid dividing size and Exception Filter data basic handling process, select filter to data be filtered with
And albefaction is carried out, it is final to obtain apparent resistivity data direct mapping；
(3), waters explores apparent resistivity inversion procedure and at figure:
(3.1), data prediction is carried out using apparent resistivity data of the electrical method data collection system to dat format, successively includes
Resistivity data calculates, imports coordinate, routine data solution is compiled, rejects jump point, the export several steps of RES2DINV formatted file；
(3.2), inverting is then carried out by LOKE software, according to field geology situation in combination with real data when inversion procedure
The quality of acquisition selects suitable inversion method；
(3.3), finally according to inversion result, handle at figure using Surfer Become the picture software, it is anti-to obtain apparent resistivity data
Drill into figure；
(4), the evaluation of underwater geological conditions overview: by apparent resistivity data direct mapping and apparent resistivity data inverting at figure, and
In conjunction with survey area borehole data, physical property geological analysis is carried out to region using resistivity isogram, resistivity etc. herein
Value line chart i.e. refer to above-mentioned apparent resistivity map and apparent resistivity inversion chart, using surfer software to apparent resistivity data body into
Row is meshed into figure, if it is acline that isopleth, which divides more uniform and smooth explanation, when the following resistivity of a certain depth
When high compared with upper formation, judge its for bedrock surface, while isopleth occur recess and protrusion can be considered construction influence so that stratum
Occur to oblique, anticline or tomography.
2. the waters electrical prospecting method of the cable system according to claim 1 suitable for waters electrical prospecting, special
Sign is: the ultrasonic distance measurement unit includes ultrasonic transmitter, ultrasonic receiver, the control electricity with radio function
Road, the input terminal of ultrasonic transmitter, the output end of ultrasonic receiver are respectively connected to control circuit, and control circuit passes through wireless
Signal and digital display communication connection.
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| CN110174703B (en) * | 2019-06-04 | 2020-10-27 | 长江勘测规划设计研究有限责任公司 | Data acquisition unit for monitoring water body permeability by direct current method |
| CN111551997A (en) * | 2020-03-12 | 2020-08-18 | 上海环联生态科技有限公司 | Investigation system and investigation method for concealed fracture layer |
| CN114488314B (en) * | 2021-12-10 | 2022-12-23 | 成都理工大学 | Geological inversion method based on land and underwater direct current combined measurement |
| CN115267919B (en) * | 2022-09-27 | 2022-12-30 | 山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队) | Geophysical exploration system based on distributed high-density electrical method |
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| US8922214B2 (en) * | 2011-12-27 | 2014-12-30 | Pgs Geophysical As | Electromagnetic geophysical survey systems and methods employing electric potential mapping |
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| CN106772622A (en) * | 2017-02-13 | 2017-05-31 | 安徽理工大学 | For the electrical prospecting measuring electrode in waters |
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Application publication date: 20180126 Assignee: ANHUI HUIZHOU GEOLOGY SECURITY INSTITUTE Co.,Ltd. Assignor: Anhui University of Science and Technology Contract record no.: X2021340000001 Denomination of invention: An exploration method of cable system for electrical exploration in water area Granted publication date: 20190326 License type: Exclusive License Record date: 20210111 |
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