CN104166165A - Horizontal borehole resistivity chromatography imaging detection device, detection system and detection method - Google Patents
Horizontal borehole resistivity chromatography imaging detection device, detection system and detection method Download PDFInfo
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- CN104166165A CN104166165A CN201410366278.0A CN201410366278A CN104166165A CN 104166165 A CN104166165 A CN 104166165A CN 201410366278 A CN201410366278 A CN 201410366278A CN 104166165 A CN104166165 A CN 104166165A
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Abstract
The invention discloses a horizontal borehole resistivity chromatography imaging detection device, detection system and detection method, for detection in a dry hole or a water hole. The detection device is mainly composed of a multi-pinhole positive and negative interface, a steel pipe, a multi-core detection cable, hole wall contact devices and a sealing cone. The hole wall contact devices are each composed of a contact probe cone, a spring, an inner sleeve, an insulation sealing plate, a communication ring and a wring end. The multi-core detection cable is sealed in the steel pipe, and each core is connected with a hole wall contact device. During detection, according to a detection depth, assembling is realized sequentially according to the apparatus provided by the invention, the sealing cone is connected with an inlet end, and detection devices are plugged to a horizontal hole one by one and are connected with a host through lead wires, such that dry hole or water hole resistivity chromatography imaging detection can be realized. After detection, the detection devices are successively detached and well placed. The detection apparatus is simple in operation, realizes double purposes of the water hole and the dry hole, and is quite high in practicality.
Description
Technical field
The present invention relates to a kind of geophysical probing technique, specifically Resistivity Tomography device, system and detection method between a kind of underground space workplace horizontal drilling.
Background technology
Since entering 21 century, domestic infrastructure construction is in the ascendant, and before each infrastructure is constructed, no matter be hypogee, or superstructure, all needs to understand the quality of its geologic media of living in, so that the design in later stage, construction, monitoring.Particularly, for underground engineering construction, in construction and excavation process, need to find out aperiodically the geological condition of country rock, because there is possibly unforeseen geologic hazard in digging process, as water burst, gush mud, landslide etc.If can not carry out this work, gently construction equipment damages, tunnel deformation, and construction delay, heavy cause great casualties, engineering is forced to suspend and relocate, and causes huge economic loss.Therefore, take effective detection means to verify building geologic media around, have great engineering significance.
Between boring, resistivity tomography method is a kind of important geophysical exploration method, surveys the advantages such as the high and cost of degree of accuracy is low with it, is widely used in various engineering soundings.Between boring, the principle of work of resistivity tomography method is by surveying the electrode of laying on cable to the power supply of boring surrounding rock body, measured again the resistivity of diverse location between hole by exploring electrode, reach corresponding geology detecting object through Inversion Calculation and imaging explanation.
Do often perpendicular to Resistivity Tomography between the boring on ground, also fairly perfect, but between horizontal drilling parallel to the ground, resistivity tomography is done fewerly, and sniffer is also more original simple and crude.Between horizontal drilling, resistivity tomography is generally used for the forward probe of tunnel or tunnel workplace.While detection, need to play two borings at tunnel front along continuous straight runs, then device accordingly could be put into hole and survey.
Mainly there is two large problems in current sniffer: first, exploration cable and electrode are put into the mode of lateral aperture mainly by cable and electrode being disclosed to inlet hole with bar, this makes cable one is to be difficult for filling in hole, the 2nd, and can not ensure that electrode is equidistant or be put on the position of appointment; Secondly,, under dry hole condition, the electrode on exploration cable can not ensure to carry out good contact with hole wall.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art, provides Resistivity Tomography device, system and detection method between a kind of horizontal drilling.
For achieving the above object, the present invention adopts following technical proposals:
Resistivity Tomography device between a kind of horizontal drilling, comprising:
Outer tube, is linear pattern internal seal structure, and its two ends are respectively arranged with the negative interface of the positive interface in spininess hole and spininess hole that can match and peg graft;
Cone-shaped body, is installed on outer tube front end, for moving forward in the boring of tunnel horizontal direction;
Multicore exploration cable, is arranged in outer tube, for surveying tunnel horizontal direction boring data;
Hole wall contact device, for the hole wall of tunnel horizontal direction boring or fully contacting of rock, and connected with a cable corresponding in multicore exploration cable; Hole wall contact device is arranged in the sealed insulation groove that can realize external seal in outer tube of outer tube middle part;
Described hole wall contact device, comprise spring and contact spy cone, sealed insulation trench bottom is fixed in spring lower end, upper end is visited cone bottom and is connected with contacting, contact is visited the upper end of cone and is stretched out outside sealed insulation groove, when detection, by the hole wall of spring and horizontal drilling or the acting force of rock, contact visit cone can be in sealed insulation groove moving radially along outer tube; Under acting force of the spring, the upper end and the hole wall of tunnel horizontal direction boring or fully contacting of rock of cone visited in contact, make upper end that contact visits cone along the hole wall of tunnel horizontal direction boring or the retinue of the profile of rock and move, spring is connected with the terminals of a cable corresponding in multicore exploration cable by connected ring.
Between described hole wall contact device and the tube wall of outer tube, separate by the insulated enclosure plate in sealed insulation groove.
Described sealed insulation groove is the ring groove radially caving inward in outer tube middle part.
The sidewall of described ring groove and bottom all arrange insulated enclosure plate.
The outer tube inside corresponding with ring groove be provided with one with axially inner sleeve in the same way of outer tube.
In ring groove, be circumferentially evenly equipped with multiple contacts along it and visit cone, the corresponding spring of cone is visited in each contact, and series connection successively between cone is visited in multiple contacts, and multiple springs are connected with the terminals of a cable corresponding in multicore exploration cable after connecting by connected ring.
Under state of nature, the part contact spy cone that multiple contacts are visited in boring gos deep in sealed insulation groove at acting force of the spring, to prevent that contact spy cone from being blocked in hole or spring is excessively drawn bad.
Described outer tube is that steel is shaft-like.
Cable in described multicore exploration cable is connected with the negative Interface Matching in the positive interface in spininess hole and spininess hole.
Described cone-shaped body is pyrometric cone, and the bottom surface of pyrometric cone and outer tube end face are connected.
Resistivity Tomography system between a kind of horizontal drilling, detector described at least two successively head and the tail is pegged graft and connected, on the front end of detector, cone-shaped body is installed foremost, the rear end of end detector is connected to main frame by lead cable by the multicore exploration cable in detector.
A detection method that utilizes Resistivity Tomography system between horizontal drilling, comprising:
1) calculate according to the degree of depth of boring the quantity that needs detector;
2) in order multiple detector head and the tail are coupled together in turn, and connect foremost cone-shaped body to import;
3) detector connecting is sent in tunnel horizontal direction boring slowly;
4) with lead cable, detector is connected on main frame;
5) repeat above 4 steps, detector is put in another hole, and guarantee that lead cable receives detector on main frame.
6) by main frame, two contacts in a hole are visited to cone and power, now, around cone is visited in two contacts, just form a current field, then, in another hole, measure two contacts and visit the magnitude of voltage between cone;
7) visit the assembled arrangement of boring by the contact in two holes of main frame auto-changing, a corresponding measuring voltage value of assembled arrangement, so, can obtain a series of magnitude of voltage.
8) utilize existing theory of geophysics, convert corresponding resistivity value to recording all magnitudes of voltage, then carry out Inversion Calculation, can realize the Resistivity Tomography between horizontal drilling.
Step 3) technical characterictic replace with, according to field environmental condition, often connect a detector, send a detector to, send to one by one in the boring of tunnel horizontal direction.
In order to solve the two large problems proposing in background technology, Resistivity Tomography device steel rod shaped structure between horizontal drilling of the present invention, cable and steel pipe one, both ensured the intensity of device, also ensured the consistance of the distance between electrode, and, by the connection one by one of this detector, can meet the requirement of various investigation depths.In addition, the hole wall contact device in the middle of steel pipe is by with spring with contact spy and bore and can guarantee and fully the contacting of hole wall.The present invention can water hole and dry hole is dual-purpose, easy and simple to handle, precision is high.
In the present invention, Resistivity Tomography device between lateral aperture, it is shaft-like that entirety is, and mainly comprises the positive and negative interface of pin hole, steel pipe, multicore exploration cable, hole wall contact device and sealing pyrometric cone five parts.Device entirety for linear pattern steel design, inside seal completely, solid firmly, guarantee its actual applicability.
Steel pipe two ends are mainly for multiple detectors interconnect with the positive and negative interface in spininess hole, are applicable to the detection under different hole depth conditions.
Multicore exploration cable is mainly considered in actual detection process needs multiple detectors to interconnect, and hole wall contact device above each detector need to be to there being a core (electric wire) to connect.By every core and each detector are carried out to Unified number, in the time of assembling, connect in order, can ensure the correct assembling of multiple detectors.
The realization of hole wall contact device has 2 keys, and the one, with contacting of hole wall or rock, the 2nd, sealing and insulation.Visit cone and the combination of spring reaches and fully the contacting of hole wall by contact, in addition, visits cone by contact and under state of nature, go deep into a part in sealed insulation groove, can protect to contact that spy is bored and spring is difficult for damaged simultaneously.
While utilizing multiple detectors to assemble, entrance point up front, connects sealing pyrometric cone, can seal steel pipe, is also beneficial to device and puts in boring.
Actual mechanical process of the present invention is very easy: before use, calculate the quantity of required detector according to hole depth, then assemble in order this detector and connect sealing pyrometric cone at entrance point and just can put in hole, finally, utilize lead cable to receive on main frame, can realize corresponding detection, after having surveyed, dismounting is put well successively.
Brief description of the drawings
Fig. 1 is Resistivity Tomography device structural drawing between horizontal drilling;
Fig. 2 is hole wall contact device sectional structure chart;
Fig. 3 is Resistivity Tomography device connection layout between horizontal drilling;
Fig. 4 is Resistivity Tomography device actual detection schematic diagram between horizontal drilling;
The 1 positive interface in spininess hole in figure, interface, 3 outer tubes are born in 2 spininess holes, 4 multicore exploration cables, 5 hole wall contact devices, 6 sealing pyrometric cones, cone, 8 springs, 9 insulated enclosure plates are visited in 7 contacts, 10 inner sleeves, 11 connected rings, 12 terminals, 13 terminals for subsequent use, 14 borings, 15 detectors that connect, 16 lead cables, 17 main frames.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1: Fig. 1 is the structural drawing of Resistivity Tomography device between a horizontal drilling, is mainly made up of the positive interface 1 in spininess hole, the negative interface 2 in spininess hole, outer tube 3, multicore exploration cable 4, hole wall contact device 5 and sealing pyrometric cone 6.Device entirety for linear pattern steel design, inside seal completely, solid firmly, guarantee its actual applicability.
Outer tube 3, is linear pattern inner sealing steel rod shaped structure, and its two ends are respectively arranged with the negative interface 2 of the positive interface 1 in spininess hole and spininess hole that can match and peg graft.Steel pipe two ends are mainly for multiple detectors interconnect with the positive and negative interface in spininess hole, are applicable to the detection under different hole depth conditions.
Sealing pyrometric cone 6, is installed on outer tube 3 front ends, and the bottom surface of pyrometric cone and outer tube end face are connected, for moving forward in the boring of tunnel horizontal direction.
Multicore exploration cable 4, is arranged in outer tube 3, for surveying tunnel horizontal direction boring data; Cable in multicore exploration cable 4 is connected with negative interface 2 couplings in the positive interface 1 in spininess hole and spininess hole.
Multicore exploration cable 4 is mainly considered in actual detection process needs multiple detectors to interconnect, and hole wall contact device above each detector need to be to there being a core (electric wire) to connect.By every core and each detector are carried out to Unified number, in the time of assembling, connect in order, can ensure the correct assembling of multiple detectors.
Hole wall contact device 5, for the hole wall of tunnel horizontal direction boring or fully contacting of rock, and connected with a cable corresponding in multicore exploration cable 4; Hole wall contact device 2 is arranged in the sealed insulation groove that can realize outer tube 3 interior external seals of outer tube 3 middle parts.
Sealed insulation groove is the ring groove radially caving inward in outer tube 3 middle parts.The sidewall of ring groove and bottom all arrange insulated enclosure plate 9.
Hole wall contact device 5 is the comparatively crucial parts of the present invention, realizes and has 2 keys, and the one, with contacting of hole wall or rock, the 2nd, sealing and insulation.Fig. 2 has provided its sectional structure chart, mainly comprises contact spy cone 7, spring 8, insulated enclosure plate 9, inner sleeve 10, connected ring 11 and terminals 12 (terminals 13 for subsequent use) six parts.Inner sleeve 10 is arranged at the outer tube corresponding with ring groove 3 inside, and inner sleeve 10 is axially concentric in the same way with outer tube.Multicore exploration cable 4 passes from inner sleeve 10 inside, and the length of inner sleeve 10 is greater than the width of ring groove bottom, so that better protection multicore exploration cable 4 wherein.Hole wall contact device 5 is visited cone 7 combinations and is ensured fully to contact with hole wall with contacting by spring 8, and utilizes insulated enclosure plate 9 to prevent spring 8 and contact to visit to bore and 7 directly touch outer tube 3 and inner sleeve 10, and completely cuts off with peripheral water, reaches and manages interior sealing effectiveness.
Sealed insulation trench bottom is fixed in spring 8 lower ends, upper end with contact visit cone 7 bottoms be connected, contact is visited the upper end of cone 7 and is stretched out outside sealed insulation groove, when detection, by the hole wall of spring 8 and horizontal drilling or the acting force of rock, contact visit cone can be in sealed insulation groove moving radially along outer tube 3; Under spring 8 acting forces, the upper end and the hole wall of tunnel horizontal direction boring or fully contacting of rock of cone 7 visited in contact, make contact visit cone 7 upper end along the hole wall of tunnel horizontal direction boring or the profile retinue of rock and move, spring 8 is connected with the terminals 12 of a cable corresponding in multicore exploration cable 4 by connected ring 11.
In ring groove, be circumferentially evenly equipped with multiple contacts along it and visit cone 7, the corresponding spring 8 of cone 7 is visited in each contact, series connection successively between cone 7 is visited in multiple contacts, and multiple springs 8 are connected with the terminals 12 of a cable corresponding in multicore exploration cable 4 after by connected ring 11 series connection.
Under state of nature, multiple contacts are visited the part contact spy cone of boring in 7 and are goed deep in sealed insulation groove at spring 8 acting forces, to prevent that contact spy cone 7 from being blocked in hole or spring 8 is excessively drawn bad.
Embodiment 2: as shown in Figure 3,4, detector described at least two successively head and the tail is pegged graft and connected, sealing pyrometric cone 6 is installed on the front end of detector foremost, and the rear end of end detector is connected to main frame 17 by lead cable 16 by the multicore exploration cable 4 in detector.
Embodiment 3: in the time carrying out actual detection,
1) calculate according to the degree of depth of boring 14 quantity that needs detector;
2) in order multiple detectors are coupled together, and connect foremost sealing pyrometric cone 6 to import, see Fig. 3;
3) detector 15 connecting is sent in boring 14 slowly, certainly, also can be according to field environmental condition, often connect a detector, send a detector to, send to one by one in boring 14;
4) by lead cable 16, the detector 15 connecting is received on main frame 17, seen Fig. 4;
5) repeat above 4 steps, detector is put in another hole, and guarantee that lead cable receives detector on main frame.
6) by main frame, two contacts in a hole are visited to cone and power, now, around cone is visited in two contacts, just form a current field, then, in another hole, measure two contacts and visit the magnitude of voltage between cone;
7) visit the assembled arrangement of boring by the contact in two holes of main frame auto-changing, a corresponding measuring voltage value of assembled arrangement, so, can obtain a series of magnitude of voltage;
8) utilize existing theory of geophysics, convert corresponding resistivity value to recording all magnitudes of voltage, then carry out Inversion Calculation, can realize the Resistivity Tomography between horizontal drilling.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection scope of the present invention.
Claims (10)
1. a Resistivity Tomography device between horizontal drilling, is characterized in that, comprising:
Outer tube, is linear pattern internal seal structure, and its two ends are respectively arranged with the negative interface of the positive interface in spininess hole and spininess hole that can match and peg graft;
Cone-shaped body, is installed on outer tube front end, for moving forward in the boring of tunnel horizontal direction;
Multicore exploration cable, is arranged in outer tube, for surveying tunnel horizontal direction boring data;
Hole wall contact device, for the hole wall of tunnel horizontal direction boring or fully contacting of rock, and connected with a cable corresponding in multicore exploration cable; Hole wall contact device is arranged in the sealed insulation groove that can realize external seal in outer tube of outer tube middle part;
Described hole wall contact device, comprise spring and contact spy cone, sealed insulation trench bottom is fixed in spring lower end, upper end is visited cone bottom and is connected with contacting, contact is visited the upper end of cone and is stretched out outside sealed insulation groove, when detection, by the hole wall of spring and horizontal drilling or the acting force of rock, contact visit cone can be in sealed insulation groove moving radially along outer tube; Under acting force of the spring, the upper end and the hole wall of tunnel horizontal direction boring or fully contacting of rock of cone visited in contact, make upper end that contact visits cone along the hole wall of tunnel horizontal direction boring or the retinue of the profile of rock and move, spring is connected with the terminals of a cable corresponding in multicore exploration cable by connected ring.
2. Resistivity Tomography device between horizontal drilling as claimed in claim 1, is characterized in that, between described hole wall contact device and the tube wall of outer tube, separates by the insulated enclosure plate in sealed insulation groove.
3. Resistivity Tomography device between horizontal drilling as claimed in claim 1, is characterized in that, described sealed insulation groove is the ring groove radially caving inward in outer tube middle part; The sidewall of described ring groove and bottom all arrange insulated enclosure plate.
4. Resistivity Tomography device between horizontal drilling as claimed in claim 3, is characterized in that, the outer tube inside corresponding with ring groove be provided with one with axially inner sleeve in the same way of outer tube.
5. Resistivity Tomography device between horizontal drilling as claimed in claim 3, it is characterized in that, in ring groove, be circumferentially evenly equipped with multiple contacts along it and visit cone, the corresponding spring of cone is visited in each contact, series connection successively between cone is visited in multiple contacts, and multiple springs are connected with the terminals of a cable corresponding in multicore exploration cable after connecting by connected ring.
6. Resistivity Tomography device between horizontal drilling as claimed in claim 1, it is characterized in that, under state of nature, the part contact spy cone that multiple contacts are visited in boring gos deep in sealed insulation groove at acting force of the spring, to prevent that contact spy cone from being blocked in hole or spring is excessively drawn bad.
7. Resistivity Tomography device between horizontal drilling as claimed in claim 1, is characterized in that, the cable in described multicore exploration cable is connected with the negative Interface Matching in the positive interface in spininess hole and spininess hole.
8. Resistivity Tomography system between a horizontal drilling, it is characterized in that, at least two detectors claimed in claim 1 are pegged graft and connected from beginning to end successively, on the front end of detector, cone-shaped body is installed foremost, the rear end of end detector is connected to main frame by lead cable by the multicore exploration cable in detector.
9. utilize described in claim 8 detection method for Resistivity Tomography system between horizontal drilling, it is characterized in that, comprising:
1) calculate according to the degree of depth of boring the quantity that needs detector;
2) in order multiple detector head and the tail are coupled together in turn, and connect foremost cone-shaped body to import;
3) detector connecting is sent in tunnel horizontal direction boring slowly;
4) by lead cable, the detector connecting is received on main frame;
5) repeat above 4 steps, detector is put in another hole, and guarantee that lead cable receives detector on main frame.
6) by main frame, two contacts in a hole are visited to cone and power, now, around cone is visited in two contacts, just form a current field, then, in another hole, measure two contacts and visit the magnitude of voltage between cone;
7) visit the assembled arrangement of boring by the contact in two holes of main frame auto-changing, a corresponding measuring voltage value of assembled arrangement, so, can obtain a series of magnitude of voltage;
8) utilize existing theory of geophysics, convert corresponding resistivity value to recording all magnitudes of voltage, then carry out Inversion Calculation, can realize the Resistivity Tomography between horizontal drilling.
10. method as claimed in claim 9, is characterized in that step 3) technical characterictic replace with, according to field environmental condition, often connect a detector, send a detector to, send to one by one in the boring of tunnel horizontal direction.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106638540A (en) * | 2017-01-22 | 2017-05-10 | 中交第公路勘察设计研究院有限公司 | Static sounding probe having resistivity measurement function and applicable to expansive foundation soil |
| CN110206533A (en) * | 2019-06-06 | 2019-09-06 | 山东科技大学 | Single lane, across inclined hole resistivity CT imaging device and floor undulation water dynamic monitoring method |
| CN111766633A (en) * | 2020-07-28 | 2020-10-13 | 中国矿业大学 | Recyclable direct-current electrical method electrode installation device in long drill hole and sectional monitoring method |
| CN112987109A (en) * | 2021-02-24 | 2021-06-18 | 山东大学 | Multifunctional portable cross-hole resistivity CT signal acquisition device, system and method |
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| CN102749653B (en) * | 2012-07-30 | 2014-12-10 | 山东大学 | Electrode transmission device for high-resolution three-dimensional (3D) CT (computerized tomography) imaging in underground engineering |
| CN102759751B (en) * | 2012-07-30 | 2015-04-22 | 山东大学 | High-resolution three-dimensional resistivity CT imaging advanced prediction system and method for underground engineering |
| CN102928881B (en) * | 2012-11-07 | 2015-09-02 | 山东大学 | A kind of ground is across hole resistivity CT coupling cable |
| CN204086567U (en) * | 2014-07-29 | 2015-01-07 | 山东大学 | Resistivity Tomography device and system between horizontal drilling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106638540A (en) * | 2017-01-22 | 2017-05-10 | 中交第公路勘察设计研究院有限公司 | Static sounding probe having resistivity measurement function and applicable to expansive foundation soil |
| CN106638540B (en) * | 2017-01-22 | 2019-01-18 | 中交第一公路勘察设计研究院有限公司 | The static sounding probe containing determination of resistivity suitable for swelling ground soil |
| CN110206533A (en) * | 2019-06-06 | 2019-09-06 | 山东科技大学 | Single lane, across inclined hole resistivity CT imaging device and floor undulation water dynamic monitoring method |
| CN110206533B (en) * | 2019-06-06 | 2023-08-29 | 山东科技大学 | Single-lane and cross-inclined-hole resistivity CT imaging device and working face bottom plate water dynamic monitoring method |
| CN111766633A (en) * | 2020-07-28 | 2020-10-13 | 中国矿业大学 | Recyclable direct-current electrical method electrode installation device in long drill hole and sectional monitoring method |
| CN112987109A (en) * | 2021-02-24 | 2021-06-18 | 山东大学 | Multifunctional portable cross-hole resistivity CT signal acquisition device, system and method |
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