CN210166253U - Quick testing arrangement of two shield TBM tunnel face rock mass intensity - Google Patents
Quick testing arrangement of two shield TBM tunnel face rock mass intensity Download PDFInfo
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- CN210166253U CN210166253U CN201920931925.6U CN201920931925U CN210166253U CN 210166253 U CN210166253 U CN 210166253U CN 201920931925 U CN201920931925 U CN 201920931925U CN 210166253 U CN210166253 U CN 210166253U
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Abstract
The utility model discloses a tunnel geological test technical field's a quick testing arrangement of two shield TBM palm face rock mass intensity, including installing mark target system, test system and the control system on the blade disc, mark target system is including the sprayer that can spray the target to blade disc the place ahead, test system includes a plurality of tups towards the resiliometer in blade disc the place ahead, thereby a plurality of resiliometers can rotate the intensity to a plurality of positions on the tunnel face along with the blade disc and test, control system is used for controlling the detection action that the sprayer sprays target and resiliometer. The device is utilized to rotate the cutter head to carry out multi-point test at a non-tunneling time period to obtain a series of resiliometer strength test data of the whole face rock mass, and a series of resiliometer data are utilized to carry out statistical analysis to obtain a face rock mass strength distribution cloud chart, partition characteristics and other related results, so that the distribution change characteristics of the face rock mass strength are comprehensively known while the face rock mass strength characteristics are rapidly and accurately obtained.
Description
Technical Field
The utility model relates to a tunnel geological test technical field especially relates to a rock mass strength test device under by the blade disc condition to two shield TBM construction tunnel face rock masses.
Background
With the progress of science and technology, the application of the double-shield TBM tunnel construction technology in actual engineering is more and more extensive. However, the strength of the rock mass of the tunnel face is difficult to sample and test due to the blocking of the cutterhead and the shield body in the construction process of the double-shield TBM, and great trouble is brought to geological work in the construction period.
At present, the traditional method for testing the strength of the tunnel face rock mass in the double-shield TBM construction is to sample a fresh large slag sample in a belt conveyor or a slag yard and then carry out indoor strength testing in a laboratory. The disadvantages of this approach are mainly manifested in the following aspects:
the slag sample is poor in representativeness, and the specific exposure position of the slag sample cannot be recovered because the slag sample of a slag field or a belt conveyor can only reflect the rock mass characteristics of the nearest excavation time period. Moreover, for the tunnel with complex rock mass characteristic change, the rock mass at different parts on the tunnel face has large property difference.
The slag sample has large disturbance and the truth of the test result is poor. Because TBM tunnelling hole sediment has experienced the collision among cutterhead cutting, crushing and the transfer process, rock mass disturbance nature is big, and its intensity has certain difference compared with the original state rock mass.
The number of test sets is limited, and the large time consumption is high. The sampling is carried out in the laboratory test, and the sampling group number is often limited each time, and the large-scale sampling manpower and material resources are consumed greatly. Moreover, if no laboratory is available on site, the process of sending the sample to the laboratory for strength test is long, and the test result cannot be obtained in time.
SUMMERY OF THE UTILITY MODEL
For overcoming the above-mentioned not enough that the test of face rock mass intensity exists in the current TBM tunnel work progress, the utility model aims to solve the technical problem that: the testing device capable of rapidly and completely obtaining the strength condition of the rock mass on the tunnel face of the tunnel is provided.
The utility model provides a technical scheme that its technical problem adopted is:
quick testing arrangement of two shield TBM palm face rock mass intensity, including installing target system, test system and the control system on the blade disc, target system is including can be to the sprayer of blade disc place ahead jet target, test system includes a plurality of tups rebound appearance towards blade disc the place ahead, thereby a plurality of resiliometers can rotate along with the blade disc and test the intensity of a plurality of positions on to the tunnel palm face, control system is used for controlling the detection action that the sprayer jetted target and resiliometer.
Further, the jets of the target system are paint jets that can spray different colors of waterproof paint.
Further, the resiliometer is a cloud intelligent electronic resiliometer with data recording and cloud uploading functions.
Further, the ejector and the resiliometers are arranged on the same radial direction of the cutter head, and the plurality of resiliometers are arranged on the radius or diameter length of the cutter head at uniform intervals.
Further, be equipped with the equipment parallel with the cutter head axis on the blade disc and lay the cabin, sprayer and resiliometer all set up and lay the under-deck at equipment, control system is located the rear of blade disc, control system and sprayer and resiliometer telecommunications connection.
Furthermore, the ejector and the resiliometer are fixed in the equipment placing cabin through an anti-abrasion sealing cushion block, a cabin door is arranged at an opening on the front face of the equipment placing cabin, and the opening and closing of the cabin door are also controlled by the control system.
Further, an electro-hydraulic push rod and a slide rail are further arranged in the equipment placing cabin for placing the resiliometer, the electro-hydraulic push rod is fixedly connected with the rear half section of the equipment placing cabin, the slide rail is installed at the front half section of the equipment placing cabin, the resiliometer is slidably installed on the slide rail, and the push rod of the electro-hydraulic push rod is connected with the tail of the resiliometer.
Further, still include the integrated box of equipment, the integrated box of equipment is fixed in the equipment is laid the cabin through abrasionproof seal cushion, electric liquid push rod, slide rail and resiliometer all set up in the integrated box of equipment.
Further, the control system comprises an equipment protection box and a control switch positioned in the equipment protection box, wherein the control switch controls the operation of the ejector, the resiliometer, the electro-hydraulic push rod and the cabin door through telecommunication communication.
The utility model has the advantages that: the device is provided with a resiliometer testing device in advance on the basis of not damaging the overall structure and strength of the cutter head, the cutter head is rotated in a non-tunneling period to carry out multipoint testing to obtain a series of resiliometer strength testing data of the whole face rock mass, the face rock mass strength is determined according to the regression relation between the resiliometer strength testing data and the traditional strength testing results, a series of resiliometer data is utilized to carry out statistical analysis to obtain the face rock mass strength distribution cloud chart, the partition characteristics and other related results, and the distribution change characteristics of the face rock mass strength are comprehensively known while the face rock mass strength characteristics are rapidly and accurately obtained.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the testing system of the present invention.
Fig. 3 is the utility model discloses face strength test point bitmap.
Fig. 4 is a cloud chart of intensity test value distribution of the present invention.
The device comprises a main body, a main.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a quick testing arrangement of two shield TBM palm face rock mass intensity, including installing mark target system, test system and the control system on the blade disc, mark target system including can be to 1 the place ahead jet target's of blade disc sprayer 2, test system includes that a plurality of tups are towards resiliometer 3 in 1 the place ahead of blade disc, thereby a plurality of resiliometers 3 can be tested along with the intensity of 1 rotation of blade disc a plurality of positions on to the tunnel palm face, control system is used for controlling 2 jet target of sprayer and the detection action of resiliometer 3.
The target system is used for setting a target on the surface of a rock mass and providing azimuth reference and image control point coordinate information for later image processing. Different targets are generally arranged in the four directions of up, down, left and right to distinguish, so that the sprayer 2 of the target system can adopt a pigment sprayer which can spray waterproof pigments with different colors, thereby playing a role of providing the target on the rock mass of the tunnel face. The control system may control operation of the injector 2 by switching on the power supply or by sending an electrical signal.
The testing system is used for testing the rock strength of a certain point on the tunnel face, the adopted tool is the resiliometer 3, the basic principle of the resiliometer 3 is that the hammer head is driven by a spring to impact the rock, the rock absorbs part of energy, the other part of energy is converted into rebound kinetic energy of the hammer head, and the strength index of the point is obtained after conversion. In order to master the strength condition of the whole face rock mass, a plurality of resiliometers 3 are required to be arranged, and the strength test of a plurality of points of the face rock mass is realized through the rotation of the cutter head 1, so that the strength condition of the whole face rock mass is roughly judged. The control system can control the operation of the resiliometer 3 by switching on the power supply or sending an electric signal. In order to facilitate the subsequent collection of test data, the resiliometer 3 preferably adopts a cloud intelligent electronic resiliometer with data recording and uploading cloud functions.
In order to achieve a better test effect, reasonably planning the distribution of test points on the tunnel face is a more critical step, aiming to obtain as many test points as possible and uniformly distributed in as short a time as possible, the method adopts the following steps: the ejector 2 and the resiliometers 3 are arranged on the same radial direction of the cutter head 1, and the plurality of resiliometers 3 are arranged on the radius or diameter length of the cutter head 1 at uniform intervals. The ejector 2 may be arranged at any position in the radial direction, but is preferably provided at the outermost end of the cutter head 1, which is more advantageous for positioning. If the resiliometers 3 are uniformly distributed on the radius length, the cutter head 1 needs to rotate 360 degrees to achieve the full-coverage uniform test of the tunnel face; if the diameter length is arranged, the number of the resiliometers 3 can be doubled, but the cutter head 1 can complete the test only by rotating 180 degrees, and the factors such as cost and the like are comprehensively considered, and the diameter length is preferably arranged only on the radius length.
When installing sprayer and resiliometer 3 specifically, set up on blade disc 1 earlier and lay cabin 11 with the parallel equipment of blade disc axis, then will sprayer 2 and resiliometer 3 all set up in cabin 11 is laid to equipment, control system sets up at the rear of blade disc 1, and control system and sprayer 2 and 3 telecommunications connection of resiliometer, wired and wireless all can.
Because TBM is at the tunnelling in-process, the vibration of blade disc 1 position is great, and the dust is more, in order to guarantee the stability that equipment was laid, will ejector 2 and resiliometer 3 all fix in equipment is laid the cabin 11 through abrasionproof sealed cushion 4, are equipped with hatch door 12 at the front opening part that the cabin 11 was laid to equipment, the switching of hatch door 12 is also controlled by control system. The cabin door 12 is closed in the normal tunneling process, the cabin door 12 is opened again when the rock strength test needs to be carried out, and the cabin door 12 is automatically closed again after the test is finished, so that the equipment in the equipment placing cabin 11 is protected.
In the actual test process, because blade disc 1 still has a certain distance apart from the face rock mass, the condition that the tup of resiliometer 3 can not contact with the rock mass can appear, so further improvement be used for placing the equipment of resiliometer 3 and lay still to be equipped with electric liquid push rod 5 and slide rail 6 in the cabin 11, as shown in fig. 2, the latter half of cabin 11 is laid through fixed component 51 fixed connection to electric liquid push rod 5 and equipment, and electric liquid push rod 5 passes through terminal 52 and links to each other with external power source, the first half of cabin 11 is laid at equipment is installed to slide rail 6, resiliometer 3 passes through gyro wheel 31 slidable and installs on slide rail 6, the push rod of electric liquid push rod 5 links to each other with the afterbody of resiliometer 3, and in order to guarantee resiliometer 3 measuring accuracy, both accessible large tracts of land contact's connecting element 32 realizes linking. In the TBM tunneling process, the resiliometer 3 retracts into the equipment placing cabin 11 under the action of the electro-hydraulic push rod 5, when strength testing is needed, the push rod of the electro-hydraulic push rod 5 extends out firstly, the resiliometer 3 is pushed to slide 6 out of the equipment placing cabin 11 along the slide rail, after the preset position is reached, the resiliometer 3 is used for strength testing, and after the testing is completed, the resiliometer 3 retracts into the equipment placing cabin 11.
Because resiliometer 3 will remove along the slide rail, in order to guarantee sealing performance, still increased an equipment integration box 7, equipment integration box 7 is fixed in equipment is laid the cabin 11 through abrasionproof seal cushion 4, electro-hydraulic push rod 5, slide rail 6 and resiliometer 3 all set up in equipment integration box 7.
The control system comprises an equipment protection box 8 and a control switch 9 positioned in the equipment protection box 8, wherein the control switch 9 controls the operation of the ejector 2, the rebound device 3, the electro-hydraulic push rod 5 and the cabin door 12 through telecommunication communication.
The method for testing the strength of the rock mass on the face by using the device mainly comprises the following steps:
a. determining the number, the arrangement interval and the number of the test points of the resiliometers 3 according to the specific cutterhead excavation diameter of the double-shield TBM and the test precision requirement;
b. when the cutter head structure is combined to design and manufacture the cutter head 1, the equipment placing cabin 11 is manufactured on the basis of the principle that the overall structure and the strength of the cutter head 1 are not damaged, the circuit box and the equipment protecting box 8 are arranged behind the cutter head 1, and all equipment is installed and connected;
c. in the tunneling process, at any time when the rock mass of the face needs to be photographed, firstly, the tunneling is stopped, and then the face is sprayed with water for multiple times, cooled and dedusted by using the tunneling machine;
d. after the cooling and dedusting work in front of the cutter head is finished, calculating the interval angle at which the cutter head correspondingly stops to test according to the determined number of the test points, then determining the position of a starting point, testing the strength of the resiliometer 3 when the cutter head 1 rotates for each corresponding interval angle until the cutter head 1 rotates for one circle, and simultaneously, respectively spraying marks with different colors when the sprayer 2 rotates to the upper position, the lower position, the left position and the right position;
e. after the test is finished, the TBM self-measuring device is used for measuring the coordinates of the positions of the periphery and the center of the cutter head, the test data of the resiliometer 3 are downloaded from the cloud, the coordinate position of each test point is calculated, and a tunnel face rock mass strength distribution cloud chart is formed by combining the test strength value and the graphic processing tool.
As shown in fig. 3, strength test points are obtained after the cutter head rotates for one circle, then a surfer software is utilized to form a tunnel face rock mass strength distribution cloud chart according to the coordinate position and the strength value of each test point, as shown in fig. 4, the strength condition of the whole tunnel face can be visually displayed by utilizing the distribution cloud chart, so that engineering personnel can comprehensively know the distribution change characteristics of the rock mass strength, and technical support is provided for subsequent engineering.
Claims (9)
1. Quick testing arrangement of two shield TBM tunnel face rock mass intensity, characterized by: including installing target system, test system and the control system on blade disc (1), the target system is including can be to injector (2) of blade disc (1) the place ahead jet target, test system includes resiliometer (3) in a plurality of tups towards blade disc (1) the place ahead, thereby a plurality of resiliometers (3) can rotate along with blade disc (1) and test the intensity of a plurality of positions on the tunnel face, control system is used for controlling injector (2) jet target and the detection action of resiliometer (3).
2. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 1, characterized by: the injectors (2) of the target system are paint injectors which can inject waterproof paints of different colors.
3. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 1, characterized by: the resiliometer (3) is a cloud intelligent electronic resiliometer with data recording and cloud uploading functions.
4. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 1, characterized by: ejector (2) and resiliometer (3) all set up in the same footpath of blade disc (1), and a plurality of resiliometers (3) are evenly spaced on the radius or the diameter length of blade disc (1) and are set up.
5. The device for rapidly testing the strength of the double-shield TBM tunnel face rock mass as claimed in any one of claims 1 to 4, is characterized in that: be equipped with on blade disc (1) and lay cabin (11) with the parallel equipment of blade disc axis, sprayer (2) and resiliometer (3) all set up in equipment laying cabin (11), control system is located the rear of blade disc (1), control system and sprayer (2) and resiliometer (3) telecommunications connection.
6. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 5, characterized by: ejector (2) and resiliometer (3) are all fixed in equipment are laid cabin (11) through abrasionproof sealing cushion (4), are equipped with hatch door (12) at the front opening part that the cabin (11) was laid to equipment, the switching of hatch door (12) is also controlled by control system.
7. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 6, characterized by: a equipment for placing resiliometer (3) is laid and still is equipped with electric liquid push rod (5) and slide rail (6) in cabin (11), the latter half fixed connection of cabin (11) is laid with equipment to electric liquid push rod (5), the first half section of cabin (11) is laid at equipment is installed in slide rail (6), resiliometer (3) slidable installs on slide rail (6), the push rod of electric liquid push rod (5) links to each other with the afterbody of resiliometer (3).
8. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 7, characterized by: still include equipment integration box (7), equipment integration box (7) are fixed in equipment is laid cabin (11) through abrasionproof seal cushion (4), electric liquid push rod (5), slide rail (6) and resiliometer (3) all set up in equipment integration box.
9. The quick testing device of two shield TBM tunnel face rock mass intensity of claim 7, characterized by: the control system comprises an equipment protection box (8) and a control switch (9) located in the equipment protection box (8), wherein the control switch (9) controls the operation of the ejector (2), the rebound device (3), the electro-hydraulic push rod (5) and the cabin door (12) through telecommunication communication.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931925.6U CN210166253U (en) | 2019-06-20 | 2019-06-20 | Quick testing arrangement of two shield TBM tunnel face rock mass intensity |
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| CN201920931925.6U CN210166253U (en) | 2019-06-20 | 2019-06-20 | Quick testing arrangement of two shield TBM tunnel face rock mass intensity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186792A (en) * | 2019-06-20 | 2019-08-30 | 中国电建集团成都勘测设计研究院有限公司 | Double-shielded TBM face rock mass strength device for quick testing |
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2019
- 2019-06-20 CN CN201920931925.6U patent/CN210166253U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186792A (en) * | 2019-06-20 | 2019-08-30 | 中国电建集团成都勘测设计研究院有限公司 | Double-shielded TBM face rock mass strength device for quick testing |
| CN110186792B (en) * | 2019-06-20 | 2023-12-05 | 中国电建集团成都勘测设计研究院有限公司 | Rapid rock mass strength testing device for double-shield TBM tunnel face |
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