CN110847971A - System for quantitatively calculating concrete pouring cavity in tunnel secondary lining construction period - Google Patents
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 55
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
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- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000004080 punching Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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Abstract
The invention discloses a system for quantitatively calculating a concrete pouring cavity in a tunnel secondary lining construction period, which comprises: the detection units are used for detecting the height of a pouring surface of the concrete and generating an electric signal for representing the pouring height of the concrete; and the interpretation unit is used for receiving the plurality of electrical signal data, processing each electrical signal data to obtain height data of monitoring points distributed according to a certain density of the concrete pouring surface in the secondary lining construction period, and calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board according to the height data. The invention effectively solves the problem of unclear concrete pouring state in the secondary lining construction period, can provide reliable judgment basis for constructors, ensures the lining construction quality, and reduces or avoids the formation of cavities from the source.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and relates to a system for quantitatively calculating a concrete pouring cavity in a secondary lining construction period of a tunnel.
Background
The tunnel lining cavity can not only cause the vault to fall the piece, threatens driving safety, still can reduce tunnel structure's bearing capacity, reduces engineering factor of safety. Because the lining concrete is poured into the formwork trolley during the construction of the secondary lining, constructors cannot accurately judge the pouring state of the vault concrete, so that the condition that the lining concrete is not fully poured in the construction period of the secondary lining cannot be timely treated. The existing detection and monitoring technology cannot effectively identify the pouring state of the lining concrete in the construction period, so that the fact that the concrete pouring in the construction period is not full becomes one of the main factors causing the formation of lining cavities.
Disclosure of Invention
One of the technical problems to be solved by the present invention is to provide a solution, which provides a system for quantitatively judging the concrete pouring state of the lining in the construction period, effectively solves the problem that the concrete pouring state in the secondary lining construction period is not clear, can provide reliable judgment basis for constructors, ensures the lining construction quality, and reduces or avoids the formation of cavities from the source.
In order to solve the above technical problem, an embodiment of the present application first provides a system for quantitatively calculating a concrete pouring cavity in a secondary lining construction period of a tunnel, where the system includes: the detection units are used for detecting the height of a pouring surface of the concrete and generating an electric signal for representing the pouring height of the concrete; and the interpretation unit is used for receiving the plurality of electrical signal data, processing each electrical signal data to obtain height data of monitoring points distributed according to a certain density of the concrete pouring surface in the secondary lining construction period, and calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board according to the height data.
According to an embodiment of the present application, the detection unit is a detection rod including a cylindrical main rod (110) configured to include a semi-annular first body (111) and a second body (112) that are butted in a snap-fit manner.
According to an embodiment of the application, be equipped with first blind hole (113) and first cylindrical protruding (114) on the circumference terminal surface of first body correspond on the circumference terminal surface of second body and be equipped with second cylindrical protruding (115) and second blind hole (116), first cylindrical protruding with the cylindrical protruding adaptation of second can be respectively installed the second blind hole with in the first blind hole, so that first body with the second body is detained and is connected as an organic wholely, thereby forms the mobile jib.
According to an embodiment of the application, the extending direction of first blind hole with the second blind hole all set to with the diameter direction of main rod is perpendicular, and first cylindrical protruding with be equipped with draw-in groove (118) on the cylindrical bellied outer wall of second respectively the second blind hole with correspond on the lateral wall face of first blind hole and be equipped with buckle (119), the buckle can with draw-in groove adaptation block, thereby will first body with second body fixed connection is as an organic whole.
According to an embodiment of the application, the free ends of the first cylindrical protrusion and the second cylindrical protrusion are each provided as a bevel for guiding mounting.
According to an embodiment of the application, be equipped with the detection electrode (120) of multiunit interval distribution in the axial on the outer wall of mobile jib, detection electrode is used for detecting the filling face height of concrete, and every group detection electrode includes that two do not communicate each other and the symmetry sets up arc conducting ring (121) on the outer wall of first main part and second main part.
According to an embodiment of the application first main part with the correspondence of second main part is equipped with be equipped with wire hole (122) on the lateral wall of arc conducting ring, arrange the wire of the inside of mobile jib passes through respectively the wire hole is connected correspondingly the arc conducting ring, thereby makes each group detecting electrode forms parallelly connected, each group detecting electrode can detect the face height of filling of concrete alone, and produces the signal of telecommunication and pass through the wire feeds back, thereby can be according to the correspondence of the signal of feedback electric detecting electrode judges the face height of filling of concrete.
According to one embodiment of the present application, the interpretation unit performs the following operations: before secondary lining construction, determining a tunnel inner contour surface curved surface equation after a tunnel waterproof board is installed based on design file lining parameters, total station instrument measurement data or three-dimensional scanning waterproof board point cloud data; in the secondary lining concrete pouring process, fitting according to the height data of the monitoring points of the obtained secondary lining concrete pouring surface distributed according to certain density to obtain a curved surface equation of the concrete pouring surface; and calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board by a calculus based on the curved surface equation of the concrete pouring surface and the curved surface equation of the inner contour surface of the tunnel.
According to an embodiment of the application, the interpretation unit further performs the following operations in the step of fitting to obtain the curved surface equation of the concrete pouring surface: converting according to the data of each electric signal to obtain the concrete surface height of each detection point; establishing a three-dimensional coordinate system XYZ by taking the horizontal projection of the arch crown and the arch shoulder as an XOY coordinate system and taking the direction vertical to the XOY coordinate system as a Z axis; converting the concrete surface height of each monitoring point into the coordinates of each monitoring point based on the three-dimensional coordinate system; and fitting based on the monitoring point coordinates to obtain a concrete pouring surface curved surface equation.
According to an embodiment of the application, the system further comprises: and an integration device connected to the plurality of detection units and summarizing the electric signals detected by the detection units.
Compared with the prior art, one or more embodiments in the above scheme can have the following advantages or beneficial effects:
in the embodiment of the invention, in the construction process of secondary lining concrete pouring, the height of the real-time pouring surface of the concrete is detected by using the detection units arranged at the positions to be detected of different tunnel linings, and the data of electric signals are processed to obtain the height data of monitoring points distributed according to certain density of the concrete pouring surface in the secondary lining construction period, and the volume of unfilled cavities above the concrete surface and below a waterproof board is calculated according to the height data. Thereby effectively solved the undefined problem of this construction period lining concrete pouring state, can provide reliable judgement basis for the constructor, guarantee lining construction quality by reducing or avoiding the formation of cavity in the source.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure and/or process particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the technology or prior art of the present application and are incorporated in and constitute a part of this specification. The drawings expressing the embodiments of the present application are used for explaining the technical solutions of the present application, and should not be construed as limiting the technical solutions of the present application.
Fig. 1 shows a structure of a detection bar according to an embodiment of the present invention.
FIG. 2 shows the test rod of FIG. 1 in a disassembled configuration.
Fig. 3 is a sectional view taken along line a-a of fig. 2.
FIG. 4 is a top view of the test rod of FIG. 1.
Fig. 5 is a sectional view taken along line B-B of fig. 4.
FIG. 6 is a schematic structural diagram of a system for quantitatively calculating a concrete pouring cavity in a secondary lining construction period of a tunnel according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart of a method for quantitatively calculating a concrete pouring cavity in a secondary lining construction period of a tunnel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of the calculation of the volume of unfilled voids above the concrete surface and below the flashing in accordance with an embodiment of the present invention.
In the present application, the drawings are all schematic and are used only for illustrating the principles of the invention and are not drawn to scale.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the accompanying drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the corresponding technical effects can be fully understood and implemented. The embodiments and the features of the embodiments can be combined without conflict, and the technical solutions formed are all within the scope of the present invention.
Additionally, the steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Fig. 6 is a schematic structural diagram of a system for quantitatively calculating a concrete pouring cavity in a secondary lining construction period of a tunnel according to an embodiment of the present invention. The components of the system and the functions of the components are described below with reference to fig. 6.
As shown in fig. 6, the system includes a plurality of detection units 100 and interpretation units 120. Each detection unit 100 detects a real-time filling level of the concrete during the concrete filling process and generates an electrical signal representing the filling level of the concrete. And the interpretation unit 120 is used for receiving the plurality of electrical signal data, processing the electrical signal data to obtain height data of monitoring points distributed according to a certain density of the concrete pouring surface in the secondary lining construction period, and calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board according to the height data. In addition, in other embodiments, an integrated device 110 may be further included, which is connected to a plurality of detection units 100, and sums the electrical signals detected by the detection units 100, so as to achieve simultaneous reading of multiple sets of data.
An embodiment of a specific structure of the detecting unit 100 will be described with reference to fig. 1 to 5.
Fig. 1 shows the structure of a detection bar 100 according to an embodiment of the present invention. As shown in fig. 1, the sensing rod 100 includes a cylindrical main rod 110 and a plurality of sets of sensing electrodes 120 disposed on an outer wall surface of the main rod 110. The main rod 110 is made of an insulating rod material. The plurality of sets of detection electrodes 120 are spaced apart from each other on the outer wall surface of the main rod 110, and are used for detecting the height of the concrete pouring surface.
As shown in fig. 2 and 3, the stem 110 is configured to include a first body 111 and a second body 112 having a semi-circular ring shape, and the first body 111 and the second body 112 are butted as one body in a snap-fit manner, thereby forming a cylindrical stem 110. A first blind hole 113 and a first cylindrical protrusion 114 are provided on a circumferential end surface of the first body 111 abutting against the second body 112, and the positions where the first blind hole 113 and the first cylindrical protrusion 114 are provided are symmetrical with respect to a central axis of the main lever 110. Meanwhile, a second cylindrical protrusion 115 and a second blind hole 116 are provided on the circumferential end surface of the second body 112 that abuts the first body 111, corresponding to the first blind hole 113 and the first cylindrical protrusion 114. Thus, the first cylindrical protrusion 114, the second cylindrical protrusion 115, the second blind hole 116 and the first blind hole 113 form a set of interlocking connections. The extending directions of the first blind hole 113 and the second blind hole 116 are both set to be perpendicular to the diameter direction of the main lever 110. The first and second cylindrical protrusions 114 and 115 can be fitted into the second and first blind holes 116 and 113, respectively, to connect the first body 111 and the second body 112 as a single body, thereby forming the cylindrical main lever 110.
In the present embodiment, the butt joint portions are provided on circumferentially butted end surfaces of the first body 111 and the second body 112, and are uniformly spaced apart in the axial direction. In the embodiment shown in fig. 2, 3 sets of snap connections are provided on circumferentially abutting end faces of the first body 111 and the second body 112. The structure of this kind of make-up connecting portion simple to operate to can guarantee the stability of butt joint.
As shown in fig. 3, the free end faces of the first cylindrical projection 114 and the second cylindrical projection 115 are each configured as a slope. The inclined surface structure can play a role in guiding installation of the first cylindrical protrusion 114 and the second cylindrical protrusion 115, and is convenient to be installed in the second blind hole 116 and the first blind hole 113 in a fitting mode. Further, a catch 118 is provided on the outer wall surfaces of the first cylindrical protrusion 114 and the second cylindrical protrusion 115, and the catch 118 is provided axially inward of the inclined surface. Meanwhile, the side wall surfaces of the second blind hole 116 and the first blind hole 113 are correspondingly provided with a buckle 119, and the buckle 119 can be matched and clamped with a clamping groove 118 to oppositely buckle the first body 111 and the second body 112 and form clamping, so that the first body and the second body are fixedly connected into a whole. Such a structure of the main rod 110 not only facilitates installation, but also ensures stability of connection between the first body 111 and the second body 112, which is advantageous for ensuring accuracy of detection data.
According to the present invention, the detection electrode 120 is configured to include two arc-shaped conductive rings 121, and the two arc-shaped conductive rings 121 are fixedly mounted on the outer wall surfaces of the first body 111 and the second body 112, respectively. As shown in fig. 4, two arc-shaped conductive rings 121 are symmetrically installed to form a set of sensing electrodes 120. The two arc-shaped conductive rings 121 in each group extend partially along the circumferential direction on the outer wall surfaces of the first body 111 and the second body 112, respectively, and are not communicated with each other. The outer wall surfaces of the first body 111 and the second body 112 are provided with a plurality of sets of detection electrodes 120, and the axial intervals between the plurality of sets of detection electrodes 120 are set according to actual needs. For example, in the concrete pouring process, when only the pouring condition of lining concrete during top punching needs to be grasped, multiple sets of detection electrodes 120 may be uniformly spaced at the top of the main rod 110 in the axial direction, and the multiple sets of detection electrodes 120 are densely distributed. When the pouring state of the concrete during the top-flushing is mainly mastered and the whole pouring process of the concrete is secondarily mastered, a plurality of groups of detection electrodes 120 can be arranged from the bottom to the top of the main rod 110 in a distributed manner from sparse to dense along the axial direction. When it is necessary to grasp the entire perfusion state, the detection electrodes 120 may be disposed on the outer wall surface of the main rod 110 at even intervals in the axial direction.
As shown in fig. 5, wire holes 122 penetrating through the side walls of the first body 111 and the second body 112, to which the detection electrodes 120 are attached, are provided. The wire holes 122 in the first body 111 and the second body 112 are symmetrically arranged, and the wire holes 122 communicate the interior of the main rod 110 with the detection electrode 120.
According to the present invention, the test stick 100 further comprises a wire (not shown). The conductive wires are disposed inside the main rod 110 and are respectively connected to the respective arc-shaped conductive rings 121 in the respective sets of sensing electrodes 120 through the conductive wire holes 122. The sets of detection electrodes 120 distributed at intervals in the axial direction are connected in parallel, so that each set of detection electrodes 120 is respectively connected with a lead. In practical applications, since the concrete just poured has conductivity, when the concrete pouring height reaches the height of a certain set of detection electrodes 120, the set of detection electrodes 120 forms a path, thereby generating an electrical signal. Therefore, each group of detection electrodes 120 can be independently detected to generate an electric signal, and the pouring height of the concrete can be judged according to the corresponding detection electrodes 120 which feed back the electric signal.
The test rod 100 according to the present invention is arranged according to actual conditions when in use. Specifically, a plurality of detection rods 100 are arranged at a portion to be measured of a tunnel lining according to a certain spatial density. For example, when the concrete pouring conditions of the vault are mainly known and the pouring conditions of the arch shoulder are secondarily known, the detection rods 100 with higher density can be arranged at the vault part, and the detection rods 120 with lower density can be arranged at the arch shoulder part. When the pouring conditions of the arch crown and the arch shoulder need to be known, the detection rods 120 can be uniformly distributed in an array distribution mode, so that the height of the pouring surface of the concrete at the arch crown part and the arch shoulder part can be detected at the same density. In addition, other requirements can also be met by adjusting the layout density of the detection rods 120. Therefore, when concrete is poured, the height data of the concrete pouring surface at a plurality of positions of the arch shoulder and the arch crown of the two lining linings can be known through the electric signals fed back by the detection rod 100.
The following describes how the uninflated cavity volume above the concrete surface and below the flashing is calculated using the interpretation unit 120 of the system with reference to fig. 7 and 8.
In one embodiment, the interpretation unit 120 performs the following operations: determining a curved surface equation of an outline surface in the tunnel after the tunnel waterproof board is installed before constructing a reinforcing mesh in the secondary lining; in the secondary lining concrete pouring process, specifically, after the construction of a secondary lining reinforcing steel bar net is finished, a trolley is in place, concrete is poured, and the data of a concrete pouring surface are detected, fitting according to the obtained height data of monitoring points distributed according to certain density of the concrete pouring surface in the secondary lining construction period to obtain a curved surface equation of the concrete pouring surface; and finally, calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board by a calculus based on the curved surface equation of the concrete pouring surface and the curved surface equation of the inner contour surface of the tunnel.
Specifically, as shown in fig. 7, the interpretation unit 120 first reads the electrical signal data detected by the detection unit 100, and converts the electrical signal data to obtain the concrete surface height h of each monitoring point1、h2…hn. Then, establishing a three-dimensional coordinate system, and measuring the concrete surface height h of each monitoring point1、h2…hnConverting into coordinates (x) of each monitoring point1,y1,z1)、(x2,y2,z2)…(xn,yn,zn). In the process of establishing the three-dimensional coordinates, a projection plane of a concrete pouring surface, or a horizontal projection established by a vault and a vault shoulder, namely a closed area D shown in fig. 8 is used as an XOY coordinate system, and then a direction perpendicular to the XOY coordinate system is used as a Z axis, so that the three-dimensional coordinates XYZ are finally established.
Then, based on the design file lining parameters, the total station measurement data or the three-dimensional scanning waterproof board point cloud data for three-dimensionally detecting the tunnel contour after the tunnel waterproof board is installed, a curve surface equation (profile surface equation for short) of the tunnel inner contour surface (the uppermost arched curve surface shown in fig. 8) after the tunnel waterproof board is installed is fitted and determined, and is recorded as z ═ f1(x, y). Then based on the coordinates (x) of the detection point1,y1,z1)、(x2,y2,z2)…(xn,yn,zn) The concrete pouring surface is obtained by fitting (as shown in fig. 8, the curved surface close to the arch shape at the middle layer is not necessarily parallel to the concrete pouring surface in the actual state, and the specific shape of the curved surface is simplified for the sake of illustration only), and the curved surface equation of the concrete pouring surface is obtained and is recorded as z ═ f2(x, y). And finally, by re-integration, based on equation f1(x, y) and f2(x, y), the volume of the unfilled cavity above the concrete surface and below the waterproof board can be calculated. Specifically, the following expression can be used to calculate the cavity volume Δ V:
wherein D represents a closed area, which is a horizontal projection of the abutment and the dome.
In the embodiment of the invention, in the construction process of secondary lining concrete pouring, the height of the real-time pouring surface of the concrete is detected by using the detection units arranged at the positions to be detected of different tunnel linings, and the data of electric signals are processed to obtain the height data of monitoring points distributed according to certain density on the concrete pouring surface in the secondary lining construction period, and the volume of unfilled cavities above the concrete surface and below a waterproof board is calculated according to the height data. Thereby effectively solved the undefined problem of this construction period lining concrete pouring state, can provide reliable judgement basis for the constructor, guarantee lining construction quality by reducing or avoiding the formation of cavity in the source.
It is to be understood that the disclosed embodiments of the invention are not limited to the particular structures, process steps, or steps disclosed herein, but extend to equivalents thereof as would be understood by those skilled in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
Reference in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrase "one embodiment" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A system for quantitatively calculating a concrete pouring cavity in a tunnel secondary lining construction period, the system comprising:
the detection units are used for detecting the height of a pouring surface of the concrete and generating an electric signal for representing the pouring height of the concrete;
and the interpretation unit is used for receiving the plurality of electrical signal data, processing each electrical signal data to obtain height data of monitoring points distributed according to a certain density of the concrete pouring surface in the secondary lining construction period, and calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board according to the height data.
2. The system according to claim 1, characterized in that the detection unit is a detection rod comprising a cylindrical main rod (110) configured to comprise a semi-annular first body (111) and a second body (112) in a butt-joint manner.
3. System according to claim 2, characterized in that a first blind hole (113) and a first cylindrical projection (114) are provided on the circumferential end face of the first body, a second cylindrical projection (115) and a second blind hole (116) are provided on the circumferential end face of the second body, respectively,
the first cylindrical protrusion and the second cylindrical protrusion can be respectively installed in the second blind hole and the first blind hole in an adaptive mode, so that the first body and the second body are connected into a whole in an opposite buckling mode, and the main rod is formed.
4. System according to claim 3, characterized in that the first blind hole and the second blind hole extend in a direction perpendicular to the diameter of the main rod, and a locking groove (118) is provided on the outer wall surface of the first cylindrical protrusion and the second cylindrical protrusion, respectively, and a locking buckle (119) is provided on the side wall surface of the second blind hole and the first blind hole,
the buckle can be matched and clamped with the clamping groove, so that the first body and the second body are fixedly connected into a whole.
5. System according to claim 3 or 4, characterized in that the free ends of the first cylindrical projection and the second cylindrical projection are each provided as a bevel for guiding mounting.
6. The system according to claim 2, wherein a plurality of sets of detection electrodes (120) are arranged on the outer wall surface of the main rod and spaced apart in the axial direction, the detection electrodes are used for detecting the height of the concrete pouring surface, and each set of detection electrodes comprises two arc-shaped conductive rings (121) which are not communicated with each other and are symmetrically arranged on the outer wall surfaces of the first body and the second body.
7. The system according to claim 6, wherein wire holes (122) are provided on the sidewalls of the first and second bodies, on which the arc-shaped conductive rings are provided, respectively, and wires arranged inside the main rod are connected to the corresponding arc-shaped conductive rings through the wire holes, respectively, so that the sets of sensing electrodes are connected in parallel,
each group of detection electrodes can independently detect the height of the concrete pouring surface, generate electric signals and feed back the electric signals through the leads, and therefore the height of the concrete pouring surface can be judged according to the detection electrodes corresponding to the feedback electric signals.
8. The system according to any one of claims 1 to 7, wherein the interpretation unit performs the following operations:
before secondary lining construction, determining a tunnel inner contour surface curved surface equation after a tunnel waterproof board is installed based on design file lining parameters, total station instrument measurement data or three-dimensional scanning waterproof board point cloud data;
in the secondary lining concrete pouring process, fitting according to the height data of the monitoring points of the obtained secondary lining concrete pouring surface distributed according to certain density to obtain a curved surface equation of the concrete pouring surface;
and calculating the volume of the unfilled cavity above the concrete surface and below the waterproof board by a calculus based on the curved surface equation of the concrete pouring surface and the curved surface equation of the inner contour surface of the tunnel.
9. The system according to any one of claims 1 to 7, wherein the interpretation unit further performs the following operation in the step of fitting to obtain the concrete pouring surface curved surface equation:
converting according to the data of each electric signal to obtain the concrete surface height of each detection point;
establishing a three-dimensional coordinate system XYZ by taking the horizontal projection of the arch crown and the arch shoulder as an XOY coordinate system and taking the direction vertical to the XOY coordinate system as a Z axis;
converting the concrete surface height of each monitoring point into the coordinates of each monitoring point based on the three-dimensional coordinate system;
and fitting based on the monitoring point coordinates to obtain a concrete pouring surface curved surface equation.
10. The system of any one of claims 1 to 9, further comprising:
and an integration device connected to the plurality of detection units and summarizing the electric signals detected by the detection units.
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| CN111413065A (en) * | 2020-04-24 | 2020-07-14 | 石家庄铁道大学 | Pneumatic load loading system for simulating train to pass through tunnel |
| CN113418483A (en) * | 2021-08-20 | 2021-09-21 | 江苏高速公路信息工程有限公司 | Intelligent monitoring system for tunnel power supply |
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| CN206489107U (en) * | 2017-02-22 | 2017-09-12 | 中国铁道科学研究院铁道建筑研究所 | Tunnel grouting cavity check device |
| CN109541036A (en) * | 2018-12-11 | 2019-03-29 | 石家庄铁道大学 | Tunnel-liner back cavity detection system |
| CN109707405A (en) * | 2018-12-28 | 2019-05-03 | 河北鸿锐嘉科技发展有限公司 | Tunnel lining concrete casting quality control method and device |
| CN110109181A (en) * | 2019-06-10 | 2019-08-09 | 甘肃路桥建设集团有限公司 | Cavity behind secondary lining of tunnel detector and back cavity detection method |
| CN110361421A (en) * | 2019-06-21 | 2019-10-22 | 中铁十六局集团第四工程有限公司 | Anti- Tunnel Second Lining concreting not Satiation devices and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111413065A (en) * | 2020-04-24 | 2020-07-14 | 石家庄铁道大学 | Pneumatic load loading system for simulating train to pass through tunnel |
| CN111413065B (en) * | 2020-04-24 | 2021-08-10 | 石家庄铁道大学 | Pneumatic load loading system for simulating train to pass through tunnel |
| CN113418483A (en) * | 2021-08-20 | 2021-09-21 | 江苏高速公路信息工程有限公司 | Intelligent monitoring system for tunnel power supply |
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