CN205538138U - A detection equipment that is used for embankment dam leakage hidden defect to survey and directional processing - Google Patents

Abstract

The utility model relates to a reservoir removes dangerous reinforcement field, the utility model provides a detection equipment that is used for embankment dam leakage hidden defect to survey and directional processing, including current collection method appearance, power and data processing platform data acquisition as an organic whole and decipher workstation and a plurality of bar coppers of being connected by the cable conductor with the earth or do not sharpen the electric method survey station that the electrode constitutes, the cable conductor passes through port and the hookup of electric method appearance, utilizes the electric method appearance that walks abreast to carry out field data's collection to every electric method survey station, utilize RS 232 serial communication carries out the transmission of digital informations. The utility model discloses an introduce the embankment dam seepage to up -to -date style parallel electric method detection technology and survey, arrange serial electric method test station at a plurality of sections such as dam scarp slope, dam crest, dam adverse grades to according to surveying the grout of achievement proper implementation, realized that the leak detection of hidden danger is as an organic whole with the processing, reached the purpose that slewing was handled.

Description

For the detection of earth and rockfill dam hidden leakage defect and the detecting devices of directional process

Technical field

This utility model relates to Reservoir field, particularly belong to a kind of earth and rockfill dam seepage method for surveying and directional process technology, being further the detecting devices of the directional process that parallel electrical method leakage detection technology combines with grouting for water plugging, the hidden leakage defect detection and the leak stopping that are primarily adapted for use in the engineerings such as reservoir, pond on a hill, dyke, tailing dam process.

Background technology

Earth and rockfill dam is the dash facility that agent structure is made up of homogenizing clay or core-wall body etc., and mainly the form with reservoir or pond on a hill is widely distributed.China's major part earth and rockfill dam is built in late 1950s to the beginning of the seventies, is limited to condition of technology and economy at that time, have quite a few reservoir or pond on a hill go through run for many years after there is seepage disease danger problem.The seepage of reservoir or pond on a hill is a major safety risks difficult problem in hydraulic engineering.

Earth and rockfill dam leakage passage belongs to concealed work, the spatial informations such as the position of hidden danger, buried depth, form, scale are difficult to grasp, cause the blindness of rehabilitation design, even some reservoir Seepage after repeatedly repairing and reinforcing and do not have any change, cause severe social influence.Therefore, the core work of the Anti-seeping technology of earth and rockfill dam must first have to clearly cause the concrete spatial distribution characteristic of the reason of seepage of dam and passage, and combine reservoir relevant early stage prospective design, construct and run the information such as background information, implement the preferred of the reasonable Arrangement of inlet well, grouting process, operational procedure, material and method, and then the most accurate, efficient, the economic purpose reaching Reservoir with a definite target in view.Along with water reservoir management and Strengthening Projects of Dangerous Reservoirs requirements of one's work, a kind of work system that leakage detection and regulation can be combined of eager needs, in order to carry out reinforcement work pointedly to ensure the health operation of reservoir.

Resistivity is to characterize the physical quantity that dielectricabsorption conductance is strong and weak, and velocity of wave compared with the difference of resistivity between dam body with leakage passage, temperature, density, pressure and other parameters are the most notable, directly perceived, simply.Utilize instrument that dam scene is carried out effective non-destructive testing, and the resistivity data body obtained through processing, integration, integrated, expression, provide reliable basis for directional process work.Grouting is means important in seepage control of dam leak stopping, according to electrical method test achievement and dam early stage data, construction means reasonable in design and course control method for use, and then avoids the drawback phenomenons such as the blindness of current grouting treatment work, extensive property.

Summary of the invention

This utility model is for the earth and rockfill dam leakage problems generally existed in Civil Engineering engineering, it is provided that a kind of directional process method that leakage detection combines with leak stopping.The purpose of utility model is to test achievement according to earth and rockfill dam field resistance rate, judge the electric characteristic abnormality district for leakage passage, in conjunction with reservoir running technology data, solution translates the concrete distribution of hidden danger, the work of later stage reinforcement is rationally instructed, optimize grouting process, it is to avoid the blindness of blocking construction, to significantly improve project benefit and to win social reputation.

This utility model additionally provides the parallel electrical method leakage detection equipment of a kind of directional process method combined for parallel electrical method leakage detection technology with grouting for water plugging.

Parallel electrical method leakage detection equipment, including integrating the data acquisition of electrical prospecting apparatus, power supply and data processing platform (DPP) and interpretation work station, and multiple copper rods of by cable (using multi-core sheathed cable line) and being connected with the earth or do not intensify the electrical method survey station that electrode is constituted；Power supply is electrical prospecting apparatus and data processing platform (DPP) is powered, and electrical prospecting apparatus is connected with each other with data processing platform (DPP) and carries out data transmission；The cable of electrical method survey station is coupled with electrical prospecting apparatus by port, utilizes parallel electrical prospecting apparatus that every electrical method survey station is carried out the collection of field data, utilizes RS-232 serial communication to carry out the transmission of data.

Preferably, described electrical method survey station is arranged in dam scarp slope, dam crest, the multiple section of dam adverse grade.

Preferably, described copper rod or do not intensify electrode and need to water saturated brine solution, all electrodes utilize multicore physical prospecting private cable to connect.

Preferably, described electrical prospecting apparatus has the dual-use function launched and receive signal, and four ports of electrical prospecting apparatus are connected with cable, is equipped with reception order and transmission data RS-232 serial port device；

Preferably, described power supply uses polylith lithium battery to integrate and forms, and can carry out the continuously adjustabe of 24v, 48v, 72v, 96v voltage.

Preferably, described data processing platform (DPP) includes the recovery of data, stores, processes software and interpretation function.

Preferably, described copper rod or do not intensify electrode pouring saturated brine solution, all electrodes utilize multicore physical prospecting private cable to connect.

Wherein, described data acquisition and the rapid integrated imaging of the data representation employing full field data of interpretation work station, in conjunction with dam operational data, dam is drawn a circle to approve as core blowby area, the zone of influence and healthy district.

Described directional process is to hole according to parallel electrical method achievement reasonable Arrangement, directional process leakage anomaly；And feed back to, in electrical method interpretation, supplement and improve electrical method achievement, revise grouting process according to borehole data.

The most supporting electrical method processing software package includes data acquisition module, processing module and interpretation module, and acquisition module can carry out the setting of the multi-operation modes such as ground connection inspection, working method, employing time, sampling interval, power supply mode；Processing module is powered for single-point and dipole power supply mode is divided into AM method and two kinds of tupes of ABM method, including solving the steps such as volume, filtering, flying spot rejecting, calculating；Described interpretation module is to utilize apparent resistivity imaging software and resistivity to return true technology that earth electric field distribution characteristics in earth and rockfill dam specifically, is intuitively visualized to present.

Below this utility model is further elaborated:

The detection of this utility model earth and rockfill dam hidden leakage defect and directional process technology mainly include parallel electrical method hidden leakage defect detection method, orientation grouting technique and process monitoring and three technical schemes of control system.It is specifically divided into the following aspects:

1. parallel electrical method hidden leakage defect detection method:

Parallel electrical method includes the data acquisition integrating electrical prospecting apparatus, power supply and data processing platform (DPP) and interpretation work station, wherein, described electrical prospecting apparatus has the dual-use function launched and receive signal, four ports of electrical prospecting apparatus are connected with Special cable wire, are equipped with reception order and transmission data RS-232 serial port device；Described power supply uses polylith lithium battery to integrate and forms, and can carry out the continuously adjustabe of 24v, 48v, 72v, 96v voltage；Data processing platform (DPP) includes the recovery of data, stores, processes software and interpretation function, the most supporting electrical method processing software package includes data acquisition module, processing module and interpretation module, and acquisition module can carry out the setting of the multi-operation modes such as ground connection inspection, working method, employing time, sampling interval, power supply mode；Processing module is powered for single-point and dipole power supply mode is divided into AM method and two kinds of tupes of ABM method, including solving the steps such as volume, filtering, flying spot rejecting, calculating；Described interpretation module is to utilize apparent resistivity imaging software and resistivity to return true technology that earth electric field distribution characteristics in earth and rockfill dam specifically, is intuitively visualized to present.Usually, one-shot measurement covers 64 electrode channels, each passage copper rod or do not intensify electrode and the earth be connected, each electrode spacing can on-demand any regulation (generally 0.5～2.5m), need to water the saline of suitable concentration for improving each electrode of coupling effect of electrode and the earth, all electrodes utilize multicore physical prospecting private cable to connect.

Especially, described AM method includes 64 road potential acquisition passages, 1 reference electrode passage N and 1 current loop electrode channel B pole, and B is extremely typically as survey line distant place 300～500m, and B pole is to be formed by 3～5 copper rod parallel combinations and contact very well with the earth.AM method after treatment, can obtain two pole devices in high-density electric, winner three pole A device, winner three pole B device, it is possible to obtain the data volume of high-resolution arrangement mode.

nullDuring work on the spot，According to breakthrough position and field working conditions，General at dam scarp slope、Dam crest、A plurality of electrical method survey station is arranged in dam adverse grade etc. parallel axis of dam direction，Wherein dam crest survey station is preferentially arranged on later stage reinforcing axis，This electrical method survey station is by multi-core sheathed cable line and multiple copper rods or does not intensify electrode and constitutes，This cable is coupled with electrical prospecting apparatus by port，Utilize parallel electrical prospecting apparatus that every electrical method survey station is carried out the collection of field data，Acquisition software parameter setting is carried out before collection，Check including ground connection、Working method、The employing time、Sampling interval、Power supply mode etc.，RS-232 serial communication is utilized to carry out the transmission of data，Interpretation module is utilized to carry out the process of data、Resolve，Each survey line resistivity section is carried out the most integrated，Finally express with the form of resistivity section survey grid，This resistivity section includes apparent resistivity pseudosection map and true resistivity section，With the difference of resistance, resistivity profile is divided into core blowby area on this resistivity section、The zone of influence and healthy district，The on-the-spot judgement achievement tentatively providing seepage information，In conjunction with earth and rockfill dam architectural feature such as dam type、Dam length、Dam width、Reservoir level and consolidation process situation over the years，Provide the suggestion of rational Anti-seeping technology.

2. orientation grouting technique:

On dam crest antiseepage section, being respectively directed to leakage states and be divided into core blowby area, the zone of influence and healthy district, core blowby area therein should judge whether to be positioned at dam body, the dam foundation or contact band, then be respectively adopted different grouting materials and grouting process.In core blowby area, each drilled grout hole pitch-row 1.5～3m, is generally divided into 1～2 rows, and hole termination depth generally enters the healthy district degree of depth 5～about 10m；In the zone of influence, each inspection drilling hole is away from 5～8m, can only arrange 1 row, and hole termination depth generally enters the healthy district degree of depth 3～about 5m；Healthy district does not the most arrange grout hole, is greatly saved grouting cost, improves work efficiency.Grout hole creeps into middle employing coring drilling process, banketing the dam body taken out utilizes parallel electrical prospecting apparatus to test, observe ground integrity, the soil body in grout hole is carried out water injection test, batholith carries out packer permeability test, especially, core blowby area destination layer need to examine and creep into speed, water injection pressure, the water quality and quantity situation of change of downstream leakage point, in filling process, for three district's dam quality, reasonable adjusting grouting process and proportioning serosity, use merogenesis grouting, circulation reinforcement process requirement, specific aim reaches the effect of leak stopping.

Comprehensive parallel electrical survey (-ing) achievement and the field working conditions analyzed, reasonably optimizing boring is arranged and grouting method, the selection of technique；For the encryption of core blowby area, adding gun drilling laying, extends to the zone of influence in local, and keep one's eyes open the characteristic information in boring drilling process, rationally selects grouting material for batholith and dam body position, pours into pressure, grouting equipment；The zone of influence uses strengthens spacing layout boring, reduces number of permutations, uses simple grouting technique, play dam body consolidation effect；Healthy district is used to the technical approach not destroying raw security running status, do not use any boring to lay, it is to avoid unnecessary waste.

3. process monitoring and control system:

Utilize parallel electrical method hidden leakage defect detection method, tentatively with the form of resistivity isogram, the visualization of dam entirety electrical property feature is manifested, run background information in conjunction with reservoir construction, dam is divided into core blowby area, the zone of influence and healthy district；

Testing achievement, appropriate design seepage control of dam Scheme of Strengthening according to electrical method, specific aim implements seepage control project；

Arranging an electrical method survey station on antiseepage section, specific embodiments is with 1.Before grouting construction, test one group of data as background value；After being in the milk, test one group of data；Different grouting target zones, carry out the test of multi-group data；

Creep into middle observation and creep into speed, fill out the index such as soil's water content and batholith integrity；In filling process, the concrete castability of main detection Rock And Soil, pressure change, and the downstream leakage point information such as seepage discharge, turbidity；Collection and interpretation to above-mentioned information, carries out parallel electrical method achievement further supplementing and perfect, optimizes Grouting Design further；

In a word, the Rock And Soil character in grout hole drilling process to be tested, antiseepage section is carried out the most parallel electrical method test by filling process, evaluates injecting cement paste quality in filling process, comprehensively analyze filling process data information, provide foundation for optimizing grouting process.

This utility model is the characteristic distributions according to Earth and Rockfill Dam adverse grade breakthrough, in conjunction with field condition, multiple sections at dam are arranged in parallel survey line along dam axis direction, parallel electrical prospecting apparatus is utilized to carry out including of field data, utilize professional and complete process software and analysis method to be interpreted, thus form the parallel electrical method leakage detection method of a set of omnibearing visual.Parallel electrical method is to integrate useful resistivity and electric sounding, test system in conjunction with technological improvements such as resistivity tomography, relatively conventional Electrical imaging technology, take application oriented new ideas, carried out plan earthquake type data acquisition framework, for adopting separation, multi-electrode synchronizes to carry out multi-fold Middle Eocene measurement, having the features such as anti-Hz noise, random disturbances performance are strong, be greatly improved efficiency of construction, the big data acquisition of magnanimity is conducive to carrying out finely detecting and analyzing of hidden leakage defect simultaneously；Further, comprehensive dam parallel electrical method achievement and background information carry out impervious grouting Construction Optimize-Design, rational deployment, in filling process, flow, turbidity, connection situation and plugging effect according to breakthrough adjust the construction control parameters such as the position of slurry material, pressure, match ratio and boring, the degree of depth and density in time, thus form systematic orientation grouting construction process；Further, focus on the timely feedback of the continuous tracking and monitoring of electrical method in filling process and grouting data information, the two is complementary to one another to realize detection and grouting, repeatedly prove, in time local directed complete set and improve Previous designs thinking, and then form a set of effective earth and rockfill dam leakage detection and directional processing system, improve the orientation anti-seepage reinforcing effect of earth and rockfill dam, reduce construction cost, in earth and rockfill dam seepage reinforcement is put into practice, give play to important construction value.

Advantage of the present utility model: this utility model is to earth and rockfill dam leakage detection up-to-date parallel electrical survey (-ing) technology transfer, and according to detection achievement reasonable implementation grouting, it is achieved that the leakage detection of hidden danger be processed as one, reached slewing process purpose.The detection of this utility model earth and rockfill dam hidden leakage defect and directional process technology compare current reinforcement technological means, overcome the blindness problem in the work of current reinforcement, highlight following advantage:

1. parallel electrical method is the electrical method new technique improved on tradition electrical method basis, have employed plan earthquake type data acquisition framework, for adopting separation, multi-electrode synchronizes to carry out potential measurement, being greatly improved efficiency of construction, obtaining of magnanimity full field data is conducive to finely detecting of earth and rockfill dam seepage simultaneously；

2. this utility model result figure is intuitively expressed with whole audience apparent resistivity pseudosection or true resistivity chromatogram, and easy analysis interpretation judges abnormal information.

3. arrange series electrical method test at multiple sections such as dam scarp slope, dam crest, dam adverse grades, the expression of stereo data volume visualization further increases the precise positioning to leakage passage path and the analysis of leakage cause, especially for dangerous situation in flood season, on-the-spot offer preliminary conclusion, superiority is more significantly；

4. use different grouting process for core blowby area, the zone of influence with healthy district, shoot the arrow at the target and target zone is implemented grouting works, improve the effect of Dam, improve engineering efficiency and reduce construction cost；

5. the new technique that detection combines with grouting is proposed, detect the location for grouting target area and guidance is provided, creep into and data of being in the milk are supplemented further and improve electrical survey (-ing) data, the two brings out the best in each other, form a set of collection get rid of the danger and add the earth and rockfill dam directional processing system being solidified as a whole, efficiently solve the difficult problem that prior art grouting effect is poor.

This utility model is mainly used in safety detection and the process of the engineerings such as medium and small reservoirs, pond on a hill, dyke, tail storehouse, and the proposition of this utility model provides technical support for job facilities antiseepage, also improves reliable data source for Dam theory analysis.

Accompanying drawing explanation

Fig. 1 is parallel electrical method hidden leakage defect detection method scene schematic diagram,

Fig. 2 is orientation grouting technique schematic diagram,

Fig. 3 is the detection of earth and rockfill dam hidden leakage defect and directional process techniqueflow schematic diagram.

1-copper rod or unpolarizable electrode；2-multicore physical prospecting private cable；3-tapping cable；4-data acquisition and interpretation work station；5-core blowby area；6-zone of influence；7-core grout hole；Hole is detected in 8-zone of influence；9-merogenesis grout hole；10-dam crest antiseepage centre section；11-dam crest antiseepage section.

Detailed description of the invention

A kind of reinforcement directional process technology integrating leakage detection and antiseepage that this utility model proposes for earth and rockfill dam Seepage, compare present situation, its advanced embodiment is the clearest and the most definite to leakage cause, the space characteristics of leak path, grouting purpose and processing mode, the monitoring realized in consolidation by grouting process engineering, and processing procedure shot the arrow at the target and information feedback system contribute to except the local of danger method is perfect.

For the most specifically introducing the use of this utility model, detailed description of the invention is as follows:

Such as Fig. 1, according to breakthrough exposure situation behind dam, in conjunction with reservoir early stage background information and place feature, earth and rockfill dam is arranged electrical method survey station 4, survey station arranges that section is generally dam scarp slope, dam crest, dam adverse grade etc. position, generally 3～4, wherein dam crest survey station is preferentially arranged on later stage reinforcing axis, dam crest every p-wire is arranged 32～64 road copper rod or is not intensified electrode 1, cable 2 and electrical prospecting apparatus carry out electric current transmission by 3 pairs of dams, 1 reference electrode passage N and 1 current loop electrode channel B, current loop electrode channel is typically as survey line distant place 300～500m, electrode channel is to be formed by 3～5 copper rod parallel combinations and contact very well with the earth.Data acquisition is internal with interpretation work station 4 is divided into electrical prospecting apparatus, power supply and data processing platform (DPP), electrical prospecting apparatus carries out the collection of data, power supply is electrical prospecting apparatus and data processing platform (DPP) is powered, the special software kit of data separate reclaimed is processed by data processing platform (DPP), finally show with apparent resistivity pseudosection and true resistivity section, this single section is expressed with the form of isogram, a plurality of survey line is organic is merged into three-dimensional resistivity structure, in conjunction with reservoir level during reservoir data such as test, draw a circle to approve out core blowby area, the zone of influence and healthy district.

As shown in Figure 2, parallel electrical survey (-ing) achievement according to step 1 divides core blowby area 5, the zone of influence 6 and healthy district, position, dam crest axis is arranged antiseepage section, core blowby area 5 is arranged grout hole 7, each drilled grout hole 7 spacing 1.5～3m, general antiseepage section is divided into 1～2 rows 10,11, and hole termination depth generally enters the healthy district degree of depth 5～about 10m；Arranging in the zone of influence 6 and check hole 8, each drilling hole that is in the milk, away from 5～8m, normally only arranges 1 row's antiseepage centre section 10, and hole termination depth generally enters the healthy district degree of depth 3～about 5m；Healthy district does not the most arrange boring, is greatly saved grouting cost, improves work efficiency.Middle employing coring drilling process is crept in boring 7,8, utilize parallel electrical prospecting apparatus 4 to test to taking out Rock And Soil, observe ground integrity, grout hole 7 is carried out pressure injection water test, especially, core blowby area 5 destination layer need to examine and creep into speed, water injection pressure, the situation of change of downstream leakage point, in filling process, for three district's dam quality, reasonable adjusting grouting process and proportioning serosity, employing merogenesis is in the milk, and circulates reinforcement process requirement, and specific aim reaches the effect of leak stopping.Especially, merogenesis grouting is to use for the different depth in core blowby area 5 to process technique accordingly, particularly grout compartment is closed isolation with other positions of holing and comes, implements grouting works individually for property.

In comprehensive analytical procedure 2, creep into the relation between speed and Rock And Soil integrity, relation between downstream leakage amount and reservoir level, relation between rock Water Content Tests in Soil Samples and resistivity and the situation of change of the Rock And Soil infiltration coefficient of different layers position, further, dam crest axis antiseepage section 10 is arranged electrical method test, detailed description of the invention such as step 1.By the continuous monitoring of electrical method data in filling process, relatively different grouting cause the variation characteristic of resistivity on dam different depth, position, scale section, according to foregoing, carry out grouting dynamic monitoring and quality evaluation Previous designs Grouting Design is fed back with construction information, the two is complementary to one another to realize detection and grouting, repeatedly prove, timely local directed complete set and improve Previous designs thinking.

In sum, accompanying drawing 3 is embodied as flow chart for the detection of earth and rockfill dam hidden leakage defect and directional process technology.First, want clear and definite Seepage Producing reason, the spatial information parameters such as the intensity locations of leakage passage, scale, occurrence, this stage utilizes data processing stations to be acquired the process of data, and express with apparent resistivity isoline figure or true resistivity sectional drawing, a plurality of survey line is combined into three-dimensional resistivity data volume, and in conjunction with reservoir early stage operational data, dam is divided into core blowby area, the zone of influence and healthy district；Its two, according to dam each region dividing condition, rationally carry out Grouting plan design, targetedly zones of different selected final arrangement and method for construction, and grout hole creep into in filling process, the observation flow of breakthrough, turbidity, connection situation and plugging effect；Combine grout hole data finally according to follow-up parallel electrical method monitoring situation to analyse in depth, improve further and supplement previous Grouting Design, reaching the effect of earth and rockfill dam leakage detection and directional process.

Claims (7)

1. for the detection of earth and rockfill dam hidden leakage defect and the detecting devices of directional process, it is characterized in that: include integrating the data acquisition of electrical prospecting apparatus, power supply and data processing platform (DPP) and interpretation work station, and multiple copper rods of by cable and being connected with the earth or do not intensify the electrical method survey station that electrode is constituted；Power supply is electrical prospecting apparatus and data processing platform (DPP) is powered, and electrical prospecting apparatus is connected with each other with data processing platform (DPP) and carries out data transmission；The cable of electrical method survey station is coupled with electrical prospecting apparatus by port, utilizes parallel electrical prospecting apparatus that every electrical method survey station is carried out the Quick Acquisition of field data, utilizes RS-232 serial communication to carry out the transmission of data.

Detecting devices the most according to claim 1, it is characterised in that: described electrical method survey station is arranged in dam scarp slope, dam crest, the multiple section of dam adverse grade.

Detecting devices the most according to claim 1, it is characterised in that: described electrical prospecting apparatus has the dual-use function launched and receive signal, and four ports of electrical prospecting apparatus are connected with cable, is equipped with reception order and transmission data RS-232 serial port device.

Detecting devices the most according to claim 1, it is characterised in that: described power supply uses polylith lithium battery to integrate and forms.

Detecting devices the most according to claim 1, it is characterised in that: described cable is multi-core sheathed cable line.

Detecting devices the most according to claim 1, it is characterised in that: described copper rod or do not intensify electrode pouring saturated brine solution, all electrodes utilize multicore physical prospecting private cable to connect.

Detecting devices the most according to claim 1, it is characterised in that: described data acquisition and the rapid integrated imaging of the data representation employing full field data of interpretation work station, in conjunction with dam operational data, dam is drawn a circle to approve as core blowby area, the zone of influence and healthy district.