CN104515653A - Device and method for monitoring leakage of hydraulic structure body - Google Patents
Device and method for monitoring leakage of hydraulic structure body Download PDFInfo
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- CN104515653A CN104515653A CN201410836922.6A CN201410836922A CN104515653A CN 104515653 A CN104515653 A CN 104515653A CN 201410836922 A CN201410836922 A CN 201410836922A CN 104515653 A CN104515653 A CN 104515653A
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Abstract
The invention discloses a device and a method for monitoring the leakage of a hydraulic structure body. The device comprises a plurality of leakage monitoring modules distributed in the hydraulic structure body, wherein each leakage monitoring module comprises first leakage monitoring units distributed up and down, second leakage monitoring units distributed left and right, and a telescopic support connected with the first leakage monitoring units and the second leakage monitoring units at the same time; leakage measuring optical fibers are distributed in the first leakage monitoring units and the second leakage monitoring units; the leakage condition of the hydraulic structure body is monitored through the leakage measuring optical fibers. The device disclosed by the invention has the characteristics of no heating, distribution and synchronism, and has prominent advantages on the aspects of reducing the monitoring cost, promoting the monitoring precision and the engineering practicability and the like; according to the monitoring method disclosed by the invention, the leakage monitoring modules are flexibly arranged in the hydraulic structure body, and the position and direction of leaked water are obtained through the calibration of the optical fibers and the comparison of the leakage measuring optical fibers, so that the method is simple in operation and accurate in result.
Description
Technical field
The present invention relates to a kind of locating and orienting monitoring of hydro-structure body potential safety hazard, be specifically related to a kind of device and monitoring method of monitoring hydro-structure body seepage.
Background technology
Destroy more than 1/3rd in China's dike breaching more than 90%, earth-rock works caused by the various problems derived because of seepage and seepage, seepage flow affects the key factor of hydraulic structures safety and effectivity military service and outstanding disease, the advanced practical leakage orienting of research and development and orientation device, device and discrimination method, the position that in reliable detection hydraulic structures, seepage occurs, scope, direction and size, take the impervious measure of effective antiseepage in time, guarantee engineering safety is extremely important.
At present for hydraulic structures leakage orienting and directional monitoring, over-borrowing helps point type seepage flow sensor, but due to measuring point limited, often occur undetected situation, and there is the deficiencies such as volume is large, lead-in wire is many, compatibility is poor more in traditional seepage flow sensor.Along with the development of distributed optical fiber sensing monitoring technology, research and development can be used for distribution type fiber-optic device for identifying and the method in hydraulic structures leak location and direction, day by day cause concern and the input of engineering circles and scientific worker.But domestic and international existing distribution type fiber-optic is surveyed and oozed technology, how need heat testing fiber by peripheral hardware thermal source, if adding situations such as hankering generation external packing layer breakage or electric leakage, will threaten to the personal safety of operating personnel, and affecting monitoring result; In addition, in hydraulic structures Service Environment, peripheral hardware current flow heats system is often difficult to ensure, greatly hinders the application of this technology in Practical Project and popularization.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of device and monitoring method of monitoring hydro-structure body seepage, have without the need to the feature such as heating, distributed, polytropism, synchronism, and the scope of the distributed expansion monitoring of leakage of change first seepage monitoring unit and the second seepage monitoring unit can be passed through, in reduction monitoring cost, lifting monitoring accuracy and practical application etc., there is outstanding advantage.
Technical scheme: for solving the problems of the technologies described above, the device of monitoring hydro-structure body seepage of the present invention, comprise several and be distributed in seepage monitoring module in hydro-structure body, the telescope support that described seepage monitoring module comprises the first seepage monitoring unit of lower upper distribution, the second seepage monitoring unit of left and right distribution and is connected with the first seepage monitoring unit and the second seepage monitoring unit simultaneously;
Described first seepage monitoring unit comprises first year fine recessed channel of stationary monitoring fiber unit, be provided with outside first year fine recessed channel and carry fine sheath, first year fine recessed channel two ends is respectively equipped with the left fibre end that carries and carries fibre end with right, the left fibre end that carries is connected with Zuo Lianqiu by the left handle that connects, the right fibre end that carries is connected with the right ball that connects by the right handle that connects, Zuo Lianqiu and right even ball-joint are at overarm brace two ends, and monitoring fiber unit is connected with information collection apparatus;
Described second seepage monitoring unit comprises second year fine recessed channel of stationary monitoring fiber unit, the two ends of second year fine recessed channel are respectively equipped with uploads fine arc end and downloads fine arc end, upload fine arc end to connect handle by upper arc and be connected with upper connecting shaft ball, download fine arc end to connect handle by arc lower and be connected with lower connecting shaft ball, upper connecting shaft ball and lower connecting shaft ball-joint are at the two ends of chevron end carriage;
Described telescope support comprises support bar, the first expansion link be connected with support bar and the second expansion link, described first expansion link and the second expansion link comprise fixed bar respectively, one end is enclosed within carriage release lever in fixed bar, the other end is provided with flange, flange is connected with overarm brace or chevron end carriage respectively, the set bolt that carriage release lever is provided with by fixed bar is fixed, and is provided with clip location below the first expansion link and the second expansion link.
As preferably, described monitoring fiber unit comprises a seepage flow measuring optical fiber and two demarcation optical fiber, demarcate the both sides that optical fiber is positioned at seepage flow measuring optical fiber for two, seepage flow measuring optical fiber overcoat has hard steel ring, demarcation optical fiber overlaps from inside to outside successively adiabatic insulation and hard sheath, the upper concave edge internal layer connected successively is provided with outside seepage flow measuring optical fiber, left chimb internal layer, lower concave edge internal layer and right chimb internal layer, upper concave edge internal layer is provided with concave edge middle level outward successively and upper concave edge is outer, left chimb internal layer is provided with left chimb middle level outward successively and left chimb is outer, lower concave edge internal layer is provided with lower concave edge middle level outward successively and lower concave edge is outer, right chimb internal layer is provided with right chimb middle level outward successively and right chimb is outer.The lowermost end of concave structure collects the possible seepage flow water body in neighboring area by as easy as rolling off a log, be exaggerated the action effect of little seepage flow, support the use with the dialysis rod of lowermost end, substantially increase the identification capability to faint seepage or initial stage seepage, this arc section structure will farthest expand the residence time of the flow domain seepage flow water body in seepage flow measuring optical fiber and contact area, and the location for seepage flow position, district to be measured has higher accuracy guarantee effect; In addition; upper concave edge skin has antiseepage, antiseptic property; and devise the upper concave edge middle level similar with its cross sectional shape and upper concave edge internal layer immediately; three layers of concavity project organization improve intensity and the toughness of this seepage monitoring special optical cable, can play protection inner structure and the effect such as to increase the service life.Wherein hard sheath is in the outside of adiabatic insulation, with demarcation optical fiber contact inside adiabatic insulation, when seepage flow water body is applied to region to be measured, under the effect of adiabatic insulation, demarcate light be in the state contacted without any heat with the external world, it will as reference demarcation optical fiber, another demarcation optical fiber of symmetrical layout can carry out secondary correction to the result with reference to demarcation optical fiber, and it will farthest guarantee the objective and accurate property of normative reference.The outer contrary chime outer with concave edge of the outer and right chimb of left chimb, the design of this contrary correspondence considerably increases the sectional area of seepage flow special optical cable, improve contact more closely knit between monitoring device with structure to be measured and be connected, enhance the concertedness of monitoring device and structure to be measured, and be arranged to each three-decker around, one of effect is to increase the compartment thickness demarcating optical fiber place, and the strength of materials and toughness constantly increase from inside to outside, not only increase its inner flexible transition with demarcating optical fiber to be connected, also add the effect of the outside larger seepage water pressure of opposing, left chimb skin and right chimb skin have corrosion resistance, improve the ability of itself and the long-term co-existence of seepage flow water body, under the complex environment of corrosive ion that may adulterate, its seepage monitoring has better effect.
As preferably, described seepage flow measuring optical fiber both sides are connected with upper dialysis rod and lower dialysis rod respectively, upper dialysis rod contacts with extraneous seepage current through hard steel ring, upper concave edge internal layer, upper concave edge middle level and upper concave edge skin successively, and lower dialysis rod contacts with extraneous seepage current through hard steel ring, lower concave edge internal layer, lower concave edge middle level and lower concave edge skin successively.
As preferably, outside described monitoring fiber unit, cylindrical retaining wall is installed, described cylindrical retaining wall comprises upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall, upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall define concave-convex type and carry fine chamber, monitoring fiber unit is positioned at concave-convex type and carries fine chamber, tight by uploading fine padlock between upper left cylindrical retaining wall and upper right cylindrical retaining wall, it is tight that lower-left cylindrical retaining wall and bottom right cylindrical retaining wall pass through to download fine padlock, upper left cylindrical retaining wall and lower-left cylindrical retaining wall rotate around left round change respectively, upper right cylindrical retaining wall and bottom right cylindrical retaining wall rotate around right round change respectively.Valley portion in the monitoring fiber unit of concave-convex design is carried out secondary supplement by the near round cross-section of cylindrical retaining wall, to inner seepage flow special optical cable will be arranged in form the structure of an outer cross section approximate circle shape, compensate for the possible drawback of production that its unique texture brings, transport and existence in laying; Cylindrical retaining wall can be opened around left round change and right round change, the concave-convex type of cylindrical retaining wall inside carries fine chamber and seepage flow special optical cable of the present invention critically can be embedded into concave-convex type and carry in fine chamber, the uploading fine button and download fine button cylindrical retaining wall firm closure of cylindrical retaining wall top and bottom, prevents cylindrical retaining wall from loosening or the interference of extraneous other factors such as artificially; And cylindrical retaining wall and concave-convex type to carry between fine chamber be cavity design, for space has been reserved in possible use operation.
As preferably, within described second year, fine recessed channel inside surface is provided with seepage mesh screen, and the surface of seepage mesh screen is cellular.
As preferably, described first expansion link and the second expansion link are enclosed within support bar, and the first expansion link and the second expansion link are provided with clamping screw, withstand support bar lock the first expansion link and the second expansion link by the head of clamping screw.
Monitor a monitoring method for the device of hydro-structure body seepage, comprise the following steps:
The first step, prepares general single mode bare fibre several, based on the first seepage monitoring unit and the second seepage monitoring cellular construction, is equipped with the monitoring fiber unit being made into several measured length;
Second step, around left round change and right round change by upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall are opened, monitoring fiber unit being arranged to concave-convex type carries in fine chamber, then the left round change of turn and right round change are by upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall close up, utilize and upload the fine upper left cylindrical retaining wall detained and download fine button and distributed at two ends, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall fasten, after monitoring fiber unit is wound on monitoring fiber unit roller, be transported to seepage flow position to be monitored,
3rd step, after treating that monitoring fiber unit is transported to region to be measured, outward winding and upload fine button and download fine button, open upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall monitoring fiber unit is carried fine chamber from concave-convex type to take out, the monitoring fiber unit of certain length being placed into inwall is provided with in second year fine recessed channel of seepage mesh screen, the monitoring fiber unit of another section of measured length is placed into inwall and is provided with in first year fine recessed channel of seepage mesh screen; Connect handle by the lower connecting shaft ball in left side and upper connecting shaft ball by being configured with arc lower, downloading fine arc end and upper arc connects handle, uploads the two ends that second year fine recessed channel of fine arc end is articulated with chevron end carriage, same step, is connected handle by the connecting shaft ball on right side and upper connecting shaft ball by being configured with arc lower, downloading fine arc end and upper arc connects handle, uploads the two ends that second year fine recessed channel of fine arc end is articulated with chevron end carriage;
4th step, by Zuo Lianqiu and the right even ball of upper end, by be connected with left carry fine end, left connect handle and rightly carry fine end, the right first year fine recessed channel connecting handle is hinged to overarm brace, equally, by the Zuo Lianqiu of lower end with rightly connect ball, by be connected with left carry fine end, left connect handle and rightly carry fine end, the right first year fine recessed channel connecting handle is hinged to overarm brace, arrives this, each seepage monitoring module arrangement terminates, and is connected by the demarcation optical fiber in all seepage monitoring modules with seepage flow measuring optical fiber with information collection apparatus;
5th step, opens information collection apparatus, first collecting demarcating the information of optical fiber, removing wherein larger with average difference optical fiber, and retains less several of its temperature variation, using the demarcation optical fiber after mutual correction process as final demarcation optical fiber;
6th step, until wandering water body through this region, by upper dialysis rod and lower dialysis rod, the heat of seepage flow water body is directly delivered to seepage flow measuring optical fiber place, its situation of change of real time record, compare with the demarcation optical fiber of the 7th step, this place's seepage state of identification, when the seepage flow water body of hydraulic structures flows through seepage monitoring module, first monitoring fiber unit and second monitoring fiber unit in first year fine recessed channel and second year fine recessed channel the water body flow through is collected, the data that real-time recording information harvester collects, and data value and demarcation optical fiber value are carried out difference, difference result is depicted as time-history curves, if time-history curves changes greatly, namely then there is seepage flow water body in this place, realize location, by above-mentioned same method, analyze the time-history curves of the monitoring fiber unit that different directions is arranged in seepage monitoring module, if the time-history curves fluctuation of a direction being monitored optical fiber is comparatively large, then judges that the party upwards exists seepage flow water body, realize directed, and then, finally realize hydraulic structures leakage orienting and directional monitoring.
The device of monitoring hydro-structure body seepage of the present invention, four the monitoring fiber units comprising level and vertical direction are monitored, a seepage flow measuring optical fiber, two demarcation optical fiber are had in each monitoring fiber unit, surrounding circulating type arranges the seepage flow situation can monitored to greatest extent from different directions, largely avoid the seepage flow test leakage situation on some direction, the accurate locating and orienting multidirectional for hydraulic structures seepage multidimensional is significant; And only needing to arrange separately certain region to seepage monitoring, the monitoring fiber unit of its four-way can be laid separately.
In the present invention, optical fiber information collection apparatus is the common device such as light power meter, OTDR optical time domain reflectometer, PPP-BOTDA pre-pumping Brillouin optical time domain analysis instrument.
Beneficial effect: the device and method of monitoring hydro-structure body seepage of the present invention, monitoring fiber unit is without the need to monitoring its heating by peripheral hardware thermal source, the cylindrical retaining wall of the seepage monitoring fiber unit seriation of research and development, transport in its design significant increase split up and down Practical Project and the ability of laying, the four-way structural design of seepage monitoring module achieves comprehensive seepage monitoring, and the spacing of the first seepage monitoring unit and the second seepage monitoring unit can be regulated by expansion link, expand the monitoring area of single seepage monitoring module, the part that effectively compensate in traditional monitoring technology and existing distributed optical fiber sensing technology is not enough, have without the need to heating, distributed, polytropism, the features such as synchronism, at reduction monitoring cost, promote the aspect such as monitoring accuracy and practical application and there is outstanding advantage.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention;
Fig. 2 is monitoring of leakage fiber unit structural drawing in Fig. 1;
Fig. 3 is cylindrical retaining wall schematic diagram;
Fig. 4 is the schematic diagram of support bar;
Fig. 5 is the structural representation of the first expansion link or the second expansion link in Fig. 1;
Fig. 6 is the structural representation of clip in Fig. 1;
Fig. 7 is seepage mesh screen structural representation in Fig. 1.
Wherein: the left chimb of 100-is outer; The left chimb middle level of 101-; The left chimb internal layer of 102-; The right chimb of 103-is outer; The right chimb middle level of 104-; The right chimb internal layer of 105-; 106-adiabatic insulation; 107-hard sheath; 108-demarcates optical fiber; The upper concave edge middle level of 109-; The upper concave edge of 110-is outer; The upper concave edge internal layer of 111-; Concave edge middle level under 112-; Concave edge internal layer under 113-; Under 114-, concave edge is outer; The upper dialysis rod of 115-; Dialysis rod under 116-; 117-hard steel ring; 118-seepage flow measuring optical fiber; 200-uploads fine button; The left round change of 201-; The right round change of 202-; 203-cylindrical retaining wall; 204-concave-convex type carries fine chamber; 205-downloads fine button; Connecting shaft ball under 501-; 502-arc lower connects handle; 503-downloads fine arc end; 504-second year fine recessed channel; 505-uploads fine arc end; The upper arc of 506-connects handle; The upper connecting shaft ball of 507-; 509-chevron end carriage; 600-carries on a left side fine end; 601-is left connects handle; 602-is left connects ball; 603-carries on the right side fine end; 604-is right connects handle; 605-is right connects ball; 608-overarm brace; 610-carries fine sheath; 611-first year fine recessed channel; 618-seepage mesh screen; 701-support bar; 702-fixed bar; 703-set bolt; 704-carriage release lever; 705-flange; 706-clamping screw; 707 clips.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figures 1 to 6, a kind of device of monitoring hydro-structure body seepage of the present invention, comprise several and be distributed in seepage monitoring module in hydro-structure body, the telescope support that seepage monitoring module comprises the first seepage monitoring unit of lower upper distribution, the second seepage monitoring unit of left and right distribution and is connected with the first seepage monitoring unit and the second seepage monitoring unit simultaneously.
First seepage monitoring unit comprises first year fine recessed channel 611 of stationary monitoring fiber unit, be provided with outside first year fine recessed channel 611 and carry fine sheath 610, first year fine recessed channel 611 two ends is respectively equipped with the left fibre end 600 that carries and carries fibre end 603 with right, the left fibre end 600 that carries is connected with the left ball 602 that connects by the left handle 601 that connects, the right fibre end 603 that carries is connected with the right ball 605 that connects by the right handle 604 that connects, left even ball 602 and the right ball 605 that connects are hinged on overarm brace 608 two ends, and monitoring fiber unit is connected with information collection apparatus.
Second seepage monitoring unit comprises second year fine recessed channel 504 of stationary monitoring fiber unit, the two ends of second year fine recessed channel 504 are respectively equipped with uploads fine arc end 505 and downloads fine arc end 503, upload fine arc end 505 to connect handle 506 by upper arc and be connected with upper connecting shaft ball 507, download fine arc end 503 to connect handle 502 by arc lower and be connected with lower connecting shaft ball 501, upper connecting shaft ball 507 and lower connecting shaft ball 501 are hinged on the two ends of chevron end carriage 509.
Telescope support comprises support bar 701, the first expansion link be connected with support bar 701 and the second expansion link, first expansion link and the second expansion link comprise fixed bar 702 respectively, one end is enclosed within carriage release lever 704 in fixed bar 702, the other end is provided with flange 705, flange 705 is connected with overarm brace 608 or chevron end carriage 509 respectively, the set bolt 703 that carriage release lever 704 is provided with by fixed bar 702 is fixed, and is provided with clip 707 and locates below the first expansion link and the second expansion link.
In the present invention, monitoring fiber unit comprises a seepage flow measuring optical fiber 118 and two demarcation optical fiber 108, demarcate the both sides that optical fiber 108 is positioned at seepage flow measuring optical fiber 118 for two, seepage flow measuring optical fiber 118 and two demarcation optical fiber 108 are fixed by filling filling material in groove, seepage flow measuring optical fiber 118 overcoat has hard steel ring 117, demarcate outer the overlapping successively from inside to outside of optical fiber 108 and have adiabatic insulation 106 and hard sheath 107, the upper concave edge internal layer 111 connected successively is provided with outside seepage flow measuring optical fiber 118, left chimb internal layer 102, lower concave edge internal layer 113 and right chimb internal layer 105, upper concave edge internal layer 111 is outer is provided with concave edge middle level 109 and upper concave edge skin 110 successively, left chimb internal layer 102 is outer is provided with left chimb middle level 101 and left chimb skin 100 successively, lower concave edge internal layer 113 is outer is provided with lower concave edge middle level 112 and lower concave edge skin 114 successively, right chimb internal layer 105 is outer is provided with right chimb middle level 104 and right chimb skin 103 successively.The lowermost end of concave structure collects the possible seepage flow water body in neighboring area by as easy as rolling off a log, be exaggerated the action effect of little seepage flow, support the use with the dialysis rod of lowermost end, substantially increase the identification capability to faint seepage or initial stage seepage, this arc section structure will farthest expand the residence time of the flow domain seepage flow water body in seepage flow measuring optical fiber 118 and contact area, and the location for seepage flow position, district to be measured has higher accuracy guarantee effect; In addition; upper concave edge skin 110 has antiseepage, antiseptic property; and devise the upper concave edge middle level similar with its cross sectional shape 109 and upper concave edge internal layer 111 immediately; three layers of concavity project organization improve intensity and the toughness of this seepage monitoring special optical cable, can play protection inner structure and the effect such as to increase the service life.Wherein hard sheath 107 is in the outside of adiabatic insulation 106, contact with demarcation optical fiber 108 inside adiabatic insulation 106, when seepage flow water body is applied to region to be measured, under the effect of adiabatic insulation 106, demarcate light be in the state contacted without any heat with the external world, it will as reference demarcation optical fiber, another demarcation optical fiber 108 of symmetrical layout can carry out secondary correction to the result with reference to demarcation optical fiber, and it will farthest guarantee the objective and accurate property of normative reference.Left chimb outer 100 and right chimb outer 103 contrary chime outer with concave edge, the design of this contrary correspondence considerably increases the sectional area of seepage flow special optical cable, improve contact more closely knit between monitoring device with structure to be measured and be connected, enhance the concertedness of monitoring device and structure to be measured, and be arranged to each three-decker around, one of effect is to increase the compartment thickness demarcating optical fiber 108 place, and the strength of materials and toughness constantly increase from inside to outside, not only increase its inner flexible transition with demarcating optical fiber 108 to be connected, also add the effect of the outside larger seepage water pressure of opposing, left chimb outer 100 and right chimb skin 103 have corrosion resistance, improve the ability of itself and the long-term co-existence of seepage flow water body, under the complex environment of corrosive ion that may adulterate, its seepage monitoring has better effect.
In the present invention, seepage flow measuring optical fiber 118 both sides are connected with upper dialysis rod 115 and lower dialysis rod 116 respectively, upper dialysis rod 115 contacts with extraneous seepage current through hard steel ring 117, upper concave edge internal layer 111, upper concave edge middle level 109 and upper concave edge outer 110 successively, and lower dialysis rod 116 contacts with extraneous seepage current through hard steel ring 117, lower concave edge internal layer 113, lower concave edge middle level 112 and lower concave edge outer 114 successively.
In the present invention, outside monitoring fiber unit, cylindrical retaining wall 203 is installed, cylindrical retaining wall 203 comprises upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall, upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall define concave-convex type and carry fine chamber 204, monitoring fiber unit is positioned at concave-convex type and carries fine chamber 204, by uploading the locking of fine button 200 between upper left cylindrical retaining wall and upper right cylindrical retaining wall, lower-left cylindrical retaining wall and bottom right cylindrical retaining wall are by downloading the locking of fine button 205, upper left cylindrical retaining wall and lower-left cylindrical retaining wall rotate around left round change 201 respectively, upper right cylindrical retaining wall and bottom right cylindrical retaining wall rotate around right round change 202 respectively.Valley portion in the monitoring fiber unit of concave-convex design is carried out secondary supplement by the near round cross-section of cylindrical retaining wall 203, to inner seepage flow special optical cable will be arranged in form the structure of an outer cross section approximate circle shape, compensate for the possible drawback of production that its unique texture brings, transport and existence in laying; Cylindrical retaining wall 203 can be opened around left round change 201 and right round change 202, the concave-convex type of cylindrical retaining wall 203 inside carries fine chamber 204 and seepage flow special optical cable of the present invention critically can be embedded into concave-convex type and carry in fine chamber 204, the fine button 200 of uploading of cylindrical retaining wall 203 top and bottom finely detain 205 by cylindrical retaining wall 203 firm closure with downloading, and prevents cylindrical retaining wall 203 from loosening or the interference of extraneous other factors such as artificially; And cylindrical retaining wall 203 and concave-convex type carry between fine chamber 204 is cavity design, for space has been reserved in possible use operation.
In the present invention, within second year, fine recessed channel 504 inside surface is provided with seepage mesh screen 618, and the surface of seepage mesh screen 618 is cellular.
In the present invention, the first expansion link and the second expansion link are enclosed within support bar 701, and the first expansion link and the second expansion link are provided with clamping screw 706, withstand support bar 701 lock the first expansion link and the second expansion link by the head of clamping screw 706.
Monitor a monitoring method for the device of hydro-structure body seepage, comprise the following steps:
The first step, layout based on seepage flow region to be measured needs, determine the number of seepage monitoring module, 6 seepage monitoring modules are tentatively drafted based on this seepage flow region to be measured, prepare general single mode bare fibre 72, based on the essential structure of seepage flow measuring optical fiber unit, be equipped with the monitoring fiber unit being made into 24 measured lengths;
Second step, around left round change 201 and right round change 202 by upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall are opened, monitoring fiber unit being arranged to concave-convex type carries in fine chamber 204, then the left round change 201 of turn and right round change 202 are by upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall close up, utilize the upper left cylindrical retaining wall uploaded fine button 200 and distributed at two ends with download fine button 205, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall fasten, after monitoring fiber unit is wound on optical cable roller, 24 monitoring fiber units are transported to seepage flow position to be monitored,
3rd step, after treating that monitoring fiber unit is transported to region to be measured, outward winding and upload fine button 200 and download fine button 205, open upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall and monitoring fiber unit is carried taking-up fine chamber 204 from concave-convex type, the monitoring fiber unit of certain length being placed into inwall is provided with in second year fine recessed channel 504 of seepage mesh screen 618, the monitoring fiber unit of another section of measured length is placed into inwall and is provided with in first year fine recessed channel 611 of 618 of seepage mesh screen; Connect handle 502 by the lower connecting shaft ball 501 in left side and upper connecting shaft ball 507 by being configured with arc lower, downloading fine arc end 503 and upper arc connects handle 506, uploads the two ends that second year fine recessed channel 504 of fine arc end 505 is articulated with chevron end carriage 509, same step, is connected handle 502 by the lower connecting shaft ball 501 on right side and upper connecting shaft ball 507 by being configured with arc lower, downloading fine arc end 503 and upper arc connects handle 506, uploads the two ends that second year fine recessed channel 504 of fine arc end 505 is articulated with chevron end carriage 509;
4th step, ball 602 and right even ball 605 is connected by the left of upper end, the left fibre that carries will be connected with and hold 600, the left handle 601 that connects carries fine end 603 with right, the right first year fine recessed channel 611 connecting handle 604 is hinged in left truss beam 606 and right truss beam 608, equally, ball 602 and right even ball 605 is connected by the left of lower end, the left fibre that carries will be connected with and hold 600, the left handle 601 that connects carries fine end 603 with right, the right first year fine recessed channel 611 connecting handle 604 is hinged on overarm brace 608, arrive this, each seepage monitoring module arrangement terminates, demarcation optical fiber in all seepage monitoring modules is connected with information collection apparatus with seepage flow measuring optical fiber,
6 the seepage monitoring modules being in diverse location place, according to above-mentioned same method, are fixed by the 5th step, and use DVP-730H model optical fiber splicer that the optical fiber in each seepage monitoring module is carried out welding, rear plastic outer sleeve is protected;
6th step, open optical fiber information collection apparatus, first the information of demarcating optical fiber 108 is collected, optical fiber demodulating apparatus demodulation is used respectively to demarcate optical fiber Temperature numerical, this time inscribe the Temperature numerical of each demarcation optical fiber in table 1, remove and larger optical fiber Tl5, Tl6, Tr7, the Tr8 of average difference, optical fiber Th1, Th2, Tb3, Tb4 that retention temperature change is less, using the optical fiber after mutual correction process as final demarcation optical fiber numerical value, its value is 10.59 DEG C;
The Temperature numerical table of optical fiber respectively demarcated by table 1
7th step, until wandering water body through this region, treat that the heat of seepage flow water body is delivered to seepage flow measuring optical fiber 118 place by dialysis rod 115 and lower dialysis rod 116, record its real-time situation of change, use the monitoring fiber unit on optical fiber demodulates information instrument demodulation different directions, draw the numerical value of the seepage flow measuring optical fiber 118 on this moment different directions between the 4th seepage monitoring module and the 5th seepage monitoring module, specifically in table 2.
Table 2 seepage flow measuring optical fiber demodulating information value
This time inscribe, in distance range between 4th seepage monitoring module and the 5th seepage monitoring module, specifically in table 2, last arranges to demarcate with the 7th step the result that optical fiber compares, within the scope of this moment, monitoring distance, there is the situation that numerical value is obviously bigger than normal in left end second permeable unit seepage flow measuring optical fiber, leakage problems may be there is, and leak location occurs in left direction; Further, draw the seepage flow measuring optical fiber solution temperature regulating in each moment in this monitoring distance scope and the absolute value curve demarcating optical fiber temperature gap, thus observe whole changing course further, if whole changing course curve is very steady and basic about null value, then judge ne-leakage situation, if the fluctuation of changing course curve is comparatively large, show that this place exists seepage, and seepage constantly changes, and needs to arouse attention; By monitoring the leakage scenarios of not homonymy, judge the seepage from different directions, based on the changing course curve of this monitoring analysis, draw from the leakage scenarios of left end comparatively serious, need follow-up reinforcement to monitor, by monitoring the time-history curves change of the seepage flow measuring optical fiber between different seepage monitoring module in scope, analyze the leakage scenarios at diverse location place, by analyzing, find that other positions and direction place changing course curve are substantially near zero, can conclude do not have leakage scenarios substantially; Finally, realize hydraulic structures region to be measured leakage orienting and directional monitoring.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. monitor the device of hydro-structure body seepage for one kind, it is characterized in that: comprise several and be distributed in seepage monitoring module in hydro-structure body, the telescope support that described seepage monitoring module comprises the first seepage monitoring unit of lower upper distribution, the second seepage monitoring unit of left and right distribution and is connected with the first seepage monitoring unit and the second seepage monitoring unit simultaneously;
Described first seepage monitoring unit comprises first year fine recessed channel of stationary monitoring fiber unit, be provided with outside first year fine recessed channel and carry fine sheath, first year fine recessed channel two ends is respectively equipped with the left fibre end that carries and carries fibre end with right, the left fibre end that carries is connected with Zuo Lianqiu by the left handle that connects, the right fibre end that carries is connected with the right ball that connects by the right handle that connects, Zuo Lianqiu and right even ball-joint are at overarm brace two ends, and monitoring fiber unit is connected with information collection apparatus;
Described second seepage monitoring unit comprises second year fine recessed channel of stationary monitoring fiber unit, the two ends of second year fine recessed channel are respectively equipped with uploads fine arc end and downloads fine arc end, upload fine arc end to connect handle by upper arc and be connected with upper connecting shaft ball, download fine arc end to connect handle by arc lower and be connected with lower connecting shaft ball, upper connecting shaft ball and lower connecting shaft ball-joint are at the two ends of chevron end carriage;
Described telescope support comprises support bar, the first expansion link be connected with support bar and the second expansion link, described first expansion link and the second expansion link comprise fixed bar respectively, one end is enclosed within carriage release lever in fixed bar, the other end is provided with flange, flange is connected with overarm brace or chevron end carriage respectively, the set bolt that carriage release lever is provided with by fixed bar is fixed, and is provided with clip location below the first expansion link and the second expansion link.
2. the device of monitoring hydro-structure body seepage according to claim 1, it is characterized in that: described monitoring fiber unit comprises a seepage flow measuring optical fiber and two demarcation optical fiber, demarcate the both sides that optical fiber is positioned at seepage flow measuring optical fiber for two, seepage flow measuring optical fiber overcoat has hard steel ring, demarcation optical fiber overlaps from inside to outside successively adiabatic insulation and hard sheath, the upper concave edge internal layer connected successively is provided with outside seepage flow measuring optical fiber, left chimb internal layer, lower concave edge internal layer and right chimb internal layer, upper concave edge internal layer is provided with concave edge middle level outward successively and upper concave edge is outer, left chimb internal layer is provided with left chimb middle level outward successively and left chimb is outer, lower concave edge internal layer is provided with lower concave edge middle level outward successively and lower concave edge is outer, right chimb internal layer is provided with right chimb middle level outward successively and right chimb is outer.
3. the device of monitoring hydro-structure body seepage according to claim 2, it is characterized in that: described seepage flow measuring optical fiber both sides are connected with upper dialysis rod and lower dialysis rod respectively, upper dialysis rod contacts with extraneous seepage current through hard steel ring, upper concave edge internal layer, upper concave edge middle level and upper concave edge skin successively, and lower dialysis rod contacts with extraneous seepage current through hard steel ring, lower concave edge internal layer, lower concave edge middle level and lower concave edge skin successively.
4. the device of monitoring hydro-structure body seepage according to claim 3, it is characterized in that: outside described monitoring fiber unit, cylindrical retaining wall is installed, described cylindrical retaining wall comprises upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall, upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall define concave-convex type and carry fine chamber, monitoring fiber unit is positioned at concave-convex type and carries fine chamber, tight by uploading fine padlock between upper left cylindrical retaining wall and upper right cylindrical retaining wall, it is tight that lower-left cylindrical retaining wall and bottom right cylindrical retaining wall pass through to download fine padlock, upper left cylindrical retaining wall and lower-left cylindrical retaining wall rotate around left round change respectively, upper right cylindrical retaining wall and bottom right cylindrical retaining wall rotate around right round change respectively.
5. the device of monitoring hydro-structure body seepage according to claim 1, it is characterized in that: within described second year, fine recessed channel inside surface is provided with seepage mesh screen, the surface of seepage mesh screen is cellular.
6. the device of monitoring hydro-structure body seepage according to claim 1, it is characterized in that: described first expansion link and the second expansion link are enclosed within support bar, first expansion link and the second expansion link are provided with clamping screw, withstand support bar lock the first expansion link and the second expansion link by the head of clamping screw.
7. monitor a monitoring method for the device of hydro-structure body seepage, it is characterized in that, comprise the following steps:
The first step, prepares general single mode bare fibre several, based on the first seepage monitoring unit and the second seepage monitoring cellular construction, is equipped with the monitoring fiber unit being made into several measured length;
Second step, around left round change and right round change by upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall are opened, monitoring fiber unit being arranged to concave-convex type carries in fine chamber, then the left round change of turn and right round change are by upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall close up, utilize and upload the fine upper left cylindrical retaining wall detained and download fine button and distributed at two ends, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall fasten, after monitoring fiber unit is wound on monitoring fiber unit roller, be transported to seepage flow position to be monitored,
3rd step, after treating that monitoring fiber unit is transported to region to be measured, outward winding and upload fine button and download fine button, open upper left cylindrical retaining wall, lower-left cylindrical retaining wall, upper right cylindrical retaining wall and bottom right cylindrical retaining wall monitoring fiber unit is carried fine chamber from concave-convex type to take out, the monitoring fiber unit of certain length being placed into inwall is provided with in second year fine recessed channel of seepage mesh screen, the monitoring fiber unit of another section of measured length is placed into inwall and is provided with in first year fine recessed channel of seepage mesh screen; Connect handle by the lower connecting shaft ball in left side and upper connecting shaft ball by being configured with arc lower, downloading fine arc end and upper arc connects handle, uploads the two ends that second year fine recessed channel of fine arc end is articulated with chevron end carriage, same step, is connected handle by the connecting shaft ball on right side and upper connecting shaft ball by being configured with arc lower, downloading fine arc end and upper arc connects handle, uploads the two ends that second year fine recessed channel of fine arc end is articulated with chevron end carriage;
4th step, by Zuo Lianqiu and the right even ball of upper end, by be connected with left carry fine end, left connect handle and rightly carry fine end, the right first year fine recessed channel connecting handle is hinged to overarm brace, equally, by Zuo Lianqiu and the right even ball of lower end, by be connected with left carry fine end, left connect handle and rightly carry fine end, the right first year fine recessed channel connecting handle is hinged on overarm brace, arrive this, each seepage monitoring module arrangement terminates, and is connected by the demarcation optical fiber in all seepage monitoring modules with seepage flow measuring optical fiber with information collection apparatus;
5th step, opens information collection apparatus, first collecting demarcating the information of optical fiber, removing wherein larger with average difference optical fiber, and retains less several of its temperature variation, using the demarcation optical fiber after mutual correction process as final demarcation optical fiber;
6th step, until wandering water body through this region, by upper dialysis rod and lower dialysis rod, the heat of seepage flow water body is directly delivered to seepage flow measuring optical fiber place, its situation of change of real time record, compare with the demarcation optical fiber of the 5th step, this place's seepage state of identification, when the seepage flow water body of hydraulic structures flows through seepage monitoring module, first monitoring fiber unit and second monitoring fiber unit in first year fine recessed channel and second year fine recessed channel the water body flow through is collected, the data that real-time recording information harvester collects, and data value and demarcation optical fiber value are carried out difference, difference result is depicted as time-history curves, if time-history curves changes greatly, namely then there is seepage flow water body in this place, realize location, by above-mentioned same method, analyze the time-history curves of the monitoring fiber unit that different directions is arranged in seepage monitoring module, if the time-history curves fluctuation of a direction being monitored optical fiber is comparatively large, then judges that the party upwards exists seepage flow water body, realize directed, and then, finally realize hydraulic structures leakage orienting and directional monitoring.
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