CN109669024B - Installation method of similar material model test excavation and supporting structure based on laser positioning - Google Patents
Installation method of similar material model test excavation and supporting structure based on laser positioning Download PDFInfo
- Publication number
- CN109669024B CN109669024B CN201910079961.9A CN201910079961A CN109669024B CN 109669024 B CN109669024 B CN 109669024B CN 201910079961 A CN201910079961 A CN 201910079961A CN 109669024 B CN109669024 B CN 109669024B
- Authority
- CN
- China
- Prior art keywords
- test bed
- similar material
- material model
- excavation
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 210
- 239000000463 material Substances 0.000 title claims abstract description 128
- 238000009412 basement excavation Methods 0.000 title claims abstract description 91
- 230000008093 supporting effect Effects 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000009434 installation Methods 0.000 title claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 54
- 238000010276 construction Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 239000011435 rock Substances 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- 239000003245 coal Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000035882 stress Effects 0.000 description 9
- 238000005065 mining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a method for installing a similar material model test excavation and supporting structure based on laser positioning, which comprises a similar material model test bed, a similar material model test roadway excavation device and a similar material model test supporting structure installation device; carrying out a similar material model test by adopting a similar material model test bed to finish the restraint and loading of a similar material model; the method comprises the following steps of accurately positioning and excavating the excavation position of a similar material model roadway through a laser sensor positioning system and a drilling system capable of flexibly moving by 360 degrees; through the adjustable limiting device, the laser sensor positioning system and the umbrella rod, the mounting position of the supporting structure is ensured to be accurate, and the supporting structure is effectively transported. The method has the advantages of simplicity, convenience, feasibility, flexibility, applicability, reliable positioning and convenient construction, and provides a new method for similar material model test excavation and supporting structure installation.
Description
Technical Field
The invention relates to a method for installing similar material model test excavation and support structures based on laser positioning, which is suitable for carrying out similar model tests for excavation and support installation of underground engineering such as roadways (chambers), tunnels, subways and the like, and belongs to the safety technology of mines and underground engineering.
Background
At present, the most extensive technical means for researching the mine pressure law is field actual measurement, and the mine pressure display law is revealed by means of surrounding rock deformation, pressure and other testing instruments. However, a large number of sensors are required to be installed during on-site actual measurement, and the consumed manpower, material resources and financial resources are large; the field mine pressure observation work is usually carried out, which needs months or even lasts years, and is influenced by factors such as field production conditions, engineering and geological conditions, and the obtained actual measurement data has certain limitations and certain potential safety hazards; especially, the accurate monitoring of the movement and pressure inside the surrounding rock mass is difficult, and the reliability of the monitoring data is low due to the accuracy and aging of the monitoring instrument. The similar material model test is a method for scale reduction research of specific engineering geological problems according to a certain similarity principle, and is mainly used for researching deformation forms, damage mechanisms and the like of underground engineering under the action of external loads. The similar material model test can quantitatively or qualitatively reflect the deformation characteristic of the surrounding rock mass, and provides a basis for finding a new mechanical rule and establishing a new theory and a new mathematical model. At present, in the aspect of researching mine pressure rules, it is generally believed that similar material model tests can play a great role in the qualitative aspect of the rules, and under the condition that similar conditions are well observed, direct answers of actual problems can be obtained through the similar material model tests theoretically. The method is an effective research method for researching the deformation, movement and damage rules of surrounding rock masses before and after mining, particularly for researching the rock mechanics problems of the surrounding rock masses in various physical and mechanical processes such as crushing, caving and the like. The similar material model test is based on a similar theory, and system characteristics which are difficult to be described by mathematics and similar characteristics between a prototype system and a model system are observed and researched by establishing a similar material model. The similar material model test can simulate excavation and support of a physical model and measure the characteristics of surrounding rock displacement, stress and the like, and a practical prototype is reversely deduced by utilizing a similar criterion, so that the deformation characteristics, the overlying strata movement rule and the like of the surrounding rock of the roadway under the excavation and support conditions can be more intuitively reflected. Therefore, the similar material model test can directly observe the whole process of the mine pressure appearance phenomenon and provide valuable reference data, thereby solving some engineering problems which cannot be solved by the theoretical analysis method at present.
In general, the similar material model test can simulate deformation and damage characteristics and stress evolution rules of surrounding rocks of roadways or stopes under various engineering geological and hydrogeological conditions and mining conditions, visually reflect physical and mechanical phenomena of a researched system, and can make up for the defects of theoretical analysis and field test. The similar material model test has unique superiority, is widely applied in the geotechnical engineering and mining engineering world at home and abroad, and becomes one of necessary means for underground engineering research. However, the current similar material model test has two main problems in the aspects of excavation and support:
firstly, manually excavating a similar material model test to form a roadway, namely, a front baffle of a similar material model test bed is in an open state, no load is applied to the similar material model, and excavation is carried out without pressure; if the roadway excavation is performed after the front baffle and the rear baffle of the similar material model test bed are closed, the thickness of the similar material model test bed is too large, and the roadway is difficult to perform manual excavation in a dark box. Therefore, under the influence of the size of a similar material model test bed and a roadway excavation mode, on one hand, a non-pressure excavation mode of firstly excavating the roadway and then gradually loading the roadway to a design value is basically adopted for simulating the excavation process of the underground engineering, which is essentially different from the physical process of firstly loading and then excavating the actual underground engineering (pressure excavation mode), so that the excavation and support balance evolution process of the underground engineering cannot be truly reproduced, and the test result is often seriously inconsistent with the actual condition of the engineering. On the other hand, even if a small-sized drilling machine is used for forming a roadway in the roadway excavation process, a positioning device is not arranged in the roadway excavation process, so that the roadway excavated manually or excavated by the small-sized drilling machine is irregular in shape and not smooth in surface, the supporting structure cannot be in full contact with surrounding rocks after being installed, stress concentration is easy to generate, instability and damage are easy to occur, and the bearing effect of the supporting structure is difficult to fully exert.
Secondly, the similar material model test also adopts an embedding mode of a reserved roadway, and a roadway-shaped mold is mainly manufactured by adopting auxiliary materials such as foam, plastic, wood, steel and the like and is embedded in a similar material model test bed; and after the similar materials are poured, pulling out the die to form the roadway. Because no proper supporting structure conveying and mounting equipment is developed, the supporting structure is pre-buried (pre-buried in a similar material model test bed before the roadway is excavated) in most cases, the excavation and supporting process of the roadway cannot be truly simulated, and the supporting effect is limited to a certain extent.
Therefore, a new process for excavating and installing a supporting structure in a similar material model test, which is simple, feasible, flexible, applicable, reliable in positioning and convenient and fast in construction, needs to be researched and developed urgently.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the installation method of the similar material model test excavation and supporting structure based on laser positioning, and the installation method is a novel installation method of the similar material model test excavation and supporting structure, which is simple, convenient, feasible, flexible and applicable, reliable in positioning and convenient and fast in construction.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a method for installing a similar material model test excavation and supporting structure based on laser positioning comprises a similar material model test bed, a similar material model test roadway excavation device and a similar material model test supporting structure installation device,
the similar material model test bed is used for carrying out similar material model tests under various engineering geology, hydrogeology and mining conditions to finish the constraint and loading of similar material models;
the similar material model test roadway excavation device realizes accurate positioning of the excavation position of the similar material model roadway through the laser sensor positioning system, and completes low-disturbance accurate excavation of the similar material model roadway through the drilling system which can flexibly move around the circumference of 360 degrees; the basic stability of the surrounding rock of the roadway in the excavation process can be ensured, so that the failure of the test caused by the collapse and the damage of the roadway is prevented; the forming rule of the roadway and the smooth surface of the surrounding rock can be kept, the supporting structure is in full contact with the surrounding rock of the roadway, and the instability and damage of the roadway due to local stress concentration are avoided;
the mounting device of the similar material model test supporting structure ensures that the mounting position of the supporting structure is accurate through the adjustable limiter and the laser sensor positioning system; and through umbrella pole conveyer, realize effectively transporting to supporting construction, prevent that supporting construction from taking place to empty, turn round partially etc. in transportation, guarantee supporting construction's installation quality, be favorable to supporting construction in time to exert and bear the weight of the effect.
The similar material model test bed comprises a test bed base, a test bed rear baffle, a test bed front baffle, an operation platform slideway and an operation platform, wherein the test bed base slideway is arranged on the test bed base;
the middle part of the test bed rear baffle is provided with a test bed operation space, and a loading hydraulic device is arranged on the test bed rear baffle and on the periphery of the test bed operation space;
the operation platform is placed on the test bed base and located between the test bed rear baffle and the test bed front baffle, an operation platform slideway is arranged on the operation platform, a model supporting plate is mounted on the operation platform slideway, and the model supporting plate is used for placing a similar material model; pushing the similar material model into the operation space of the test bed through the position adjustment of the operation platform and the movement of the model supporting plate;
a test bed excavation window is arranged in the middle of the test bed front baffle; by moving the front baffle of the test bed, the rear baffle of the test bed is attached to the front baffle of the test bed, and the excavation window of the test bed is opposite to the position to be excavated of the similar material model.
Specifically, the similar material model test roadway excavation device comprises a drilling device, a control device and a supporting device;
the drilling device comprises a low-speed motor, a rotary rod, a hollow drill rod, a drilling machine sliding and connecting device and a drilling machine sleeve, wherein the drilling machine sliding and connecting device is fixed with the drilling machine sleeve; the output shaft of the low-speed motor is connected with one end of a rotary rod, the other end of the rotary rod is connected with one end of a hollow drill rod through a spring slip, the spring slip is installed on a drilling machine sliding and connecting device, and the hollow drill rod extends out of the drilling machine sliding and connecting device and is arranged in a drilling machine sleeve;
the control device comprises a data acquisition and signal control system, a motor control system and a laser sensor, wherein the motor control system controls the low-speed motor, the laser sensor is arranged at one end of the drill sleeve, which faces the excavation window of the test bed, and the data acquisition and signal control system is in signal connection with the motor control system and the laser sensor;
the supporting device comprises an operating tool table and a triangular support, the data acquisition and signal control system and the motor control system are arranged on the operating tool table, and the triangular support is used for supporting the drilling machine sliding and connecting device and the drilling machine sleeve.
Specifically, the similar material model test supporting structure mounting device comprises a supporting device, an umbrella rod conveying device, a limiting device and a supporting device;
the supporting device comprises a section steel bracket;
the umbrella rod conveying device comprises an umbrella rod, umbrella rod branches and an umbrella rod grabbing head, wherein the umbrella rod branches are arranged at one end of the umbrella rod, and the umbrella rod grabbing head is clamped by the section steel support in the conveying process and loosened when the section steel support is placed;
the limiting device comprises a drilling machine sleeve, an adjustable limiting stopper and a laser sensor, wherein the adjustable limiting stopper is arranged in the drilling machine sleeve along the length direction, and adjacent drilling machine sleeves are connected in a tensioning mode through a steel wire rope; the laser sensor is arranged at one end, facing the test bed excavation window, of the drill sleeve, and the data acquisition and signal control system is in signal connection with the laser sensor;
the supporting device comprises an operating tool table and a triangular support, the data acquisition and signal control system is arranged on the operating tool table, and the triangular support is used for supporting the drill sleeve.
The installation method of the similar material model test excavation and supporting structure based on laser positioning comprises the following steps:
the method comprises the following steps: preparing similar materials according to physical and mechanical characteristic parameters of an actual engineering coal rock mass, firstly pouring and compacting the similar materials layer by layer according to a pre-designed layering position to form a similar material model, then placing the similar material model on an operation platform containing a model supporting plate by adopting hoisting equipment, and finally placing the operation platform on a test bed base by hoisting;
step two: firstly, moving a model supporting plate along an operation platform slideway, feeding a similar material model into a test bed operation space in a test bed rear baffle, and removing the operation platform containing the model supporting plate by adopting hoisting equipment;
step three: firstly, moving a test bed front baffle to a test bed rear baffle along a test bed base slideway, fixing the test bed rear baffle and the test bed front baffle by bolts, and finally starting a loading hydraulic device to apply displacement constraint and stress to a similar material model according to the ground stress size and direction actually measured in an engineering field and the geometric similarity ratio of the similar material model test;
step four: firstly, placing an operating tool table on the ground by adopting hoisting equipment, and fixing a drill sleeve through a triangular bracket; before the similar material model test roadway is excavated, moving the drill sleeve to a test bed excavation window on a test bed front baffle; the laser sensor is arranged at one end of the drill sleeve, which faces the test bed excavation window, and a connecting wire for connecting the laser sensor and the data acquisition and signal control system is led out through a small wire outlet hole on the drill sleeve;
step five: firstly, starting a data acquisition and signal control system to send an instruction to a laser sensor, emitting a laser beam to a roadway, further positioning the excavation profile of the roadway, and feeding back coordinate information of the excavation profile of the roadway; then, a roadway excavation coordinate instruction is issued to a motor control system through a data acquisition and signal control system, a low-speed motor drives a rotary rod to rotate, and after the rotary rod rotates, a spring slip drives a hollow drill rod in a drill sleeve to move in the circumferential and peripheral directions in a drill sliding and connecting device along a drill moving track, so that accurate low-disturbance under-pressure excavation of a similar material model test roadway is realized; the spring slips can clamp the hollow drill rod, so that the transmission of torque of the rotary rod and the movement along the moving track of the drilling machine are realized; the hollow drill rod can freely rotate at multiple angles, so that the rotation direction of the hollow drill rod can be conveniently adjusted, and the drill jamming is prevented;
step six: removing the similar material model test roadway excavation device after completing low-disturbance accurate excavation of the similar material model roadway;
step seven: firstly, placing an operating tool table on the ground by adopting hoisting equipment, fixing a drill sleeve through a triangular support, and moving the drill sleeve into a test bed excavation window on a test bed front baffle;
step eight: firstly, starting a data acquisition and signal control system to send an instruction to a laser sensor, emitting a laser beam to a roadway, further positioning the excavation profile of the roadway, and feeding back coordinate information of the excavation profile of the roadway; then adjusting the limiting position of the adjustable limiting device, wherein adjacent adjustable limiting devices are connected by a steel wire rope to ensure the accuracy of the position of a transportation channel of the supporting structure and prevent the mounting position of the supporting structure from deviating; finally, connecting the umbrella rod grabbing head at the end part of the branch of the umbrella rod to the section steel support, and transporting the section steel support to the corresponding position of a similar material model test roadway in a drilling machine sleeve by adopting the installation of the umbrella rod, so as to prevent the supporting structure from toppling, twisting and deviating and the like in the transportation process; after the section steel support is transported, the opening and closing button of the umbrella rod is opened by pulling the pull rope of the lower switch, and the umbrella rod grabbing head of the umbrella rod branch is separated from the section steel support.
Has the advantages that: the method for excavating and installing the supporting structure based on the laser positioning similar material model test is suitable for similar material model tests of underground engineering such as coal mines, iron mines, non-ferrous metal mines, tunnels, subways, water conservancy and hydropower and the like, is simple, convenient, feasible, flexible, applicable, reliable in positioning and convenient and fast to construct, and can provide a new process for excavating and installing the supporting structure based on the similar material model test.
Drawings
FIG. 1 is a schematic view of a similar material model test stand;
FIG. 2 is a schematic diagram of a similar material model test excavation device;
FIG. 3 is a view of a similar material model test support structure mounting device;
FIG. 4 is a schematic sectional view of the cross-section 1-1;
FIG. 5 is a schematic sectional view taken along line 2-2;
FIG. 6 is a schematic sectional view taken along line 3-3;
fig. 7 is a schematic cross-sectional view of fig. 4-4.
The figure includes: 1-test bed rear baffle, 2-test bed front baffle, 3-test bed base, 4-test bed base slideway, 5-test bed operating space, 6-loading hydraulic device, 7-test bed excavation window, 8-similar material model, 9-model supporting plate, 10-operating platform, 11-operating platform slideway, 12-operating tool table, 13-triangular support, 14-drill sleeve, 15-hollow drill rod, 16-drill sliding and connecting device, 17-rotating rod, 18-low-speed motor, 19-cable, 20-motor control system, 21-connecting line, 22-outlet small hole, 23-data acquisition and signal control system, 24-laser sensor, 25-bolt hole, 26-adjustable limiting stopper, 27-steel wire rope, 28-installation umbrella rod, 29-section steel support, 30-umbrella rod grabbing head, 31-umbrella rod branch, 32-umbrella rod opening and closing button, 33-opening and closing pull rope, 34-spring slip, 35-drilling machine moving track and 36-slip; 37-slip seat, 38-spring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 7, the method for installing the similar material model test excavation and supporting structure based on laser positioning comprises a similar material model test bed, a similar material model test roadway excavation device and a similar material model test supporting structure installation device.
The similar material model test bed is used for carrying out similar material model tests under various engineering geology, hydrogeology and mining conditions, and completing the constraint and loading of similar material models.
Similar material model test platform includes test bench base 3, test bench backplate 1, preceding baffle 2 of test bench, operation platform slide 11 and operation platform 10, is provided with test bench base slide 4 on the test bench base 3, and test bench backplate 1 is fixed on test bench base 3, and preceding baffle 2 of test bench is installed on test bench base slide 4, and test bench backplate 1 just is right with 2 positions of baffle before the test bench.
A test bed operation space 5 is arranged in the middle of the test bed rear baffle 1, and loading hydraulic devices 6 are arranged on the test bed rear baffle 1 and on the periphery of the test bed operation space 5.
The operation platform 10 is placed on the test bed base 3 and located between the test bed rear baffle 1 and the test bed front baffle 2, an operation platform slideway 11 is arranged on the operation platform 10, a model supporting plate 9 is installed on the operation platform slideway 11, and the model supporting plate 9 is used for placing a similar material model 8; the similar material model 8 is pushed into the test stand operating space 5 by the position adjustment of the operation platform 10 and the movement of the model pallet 9.
A test bed excavation window 7 is arranged in the middle of the test bed front baffle 2; by moving the front baffle 2 of the test bed, the rear baffle 1 of the test bed and the front baffle 2 of the test bed are attached to each other, and the excavation window 7 of the test bed is over against the position to be excavated of the similar material model 8.
The similar material model test roadway excavation device realizes accurate positioning of the excavation position of the similar material model roadway through the laser sensor positioning system, and completes low-disturbance accurate excavation of the similar material model roadway through the drilling system which can flexibly move around the circumference of 360 degrees; the basic stability of the surrounding rock of the roadway in the excavation process can be ensured, so that the failure of the test caused by the collapse and the damage of the roadway is prevented; and the forming rule of the roadway and the surface smoothness of surrounding rocks can be kept, the supporting structure is in full contact with the surrounding rocks of the roadway, and the instability and damage of the roadway due to local stress concentration are avoided.
The similar material model test roadway excavation device comprises a drilling device, a control device and a supporting device, wherein the drilling device comprises a low-speed motor 18, a rotating rod 17, a hollow drill rod 15, a drilling machine sliding and connecting device 16 and a drilling machine sleeve 14, and the drilling machine sliding and connecting device 16 is fixed with the drilling machine sleeve 14; the output shaft of the low speed motor 18 is connected with one end of the rotating rod 17, the other end of the rotating rod 17 is connected with one end of the hollow drill rod 15 through a spring slip 34, the spring slip 34 is installed on the drilling machine sliding and connecting device 16, and the hollow drill rod 15 extends out of the drilling machine sliding and connecting device 16 and is arranged in the drilling machine sleeve 14.
The control device comprises a data acquisition and signal control system 23, a motor control system 20 and a laser sensor 24, wherein the motor control system 20 controls the low-speed motor 18, the laser sensor 24 is installed at one end, facing the test bed excavation window 7, of the drill sleeve 14, and the data acquisition and signal control system 23 is in signal connection with the motor control system 20 and the laser sensor 24.
The supporting device comprises an operating tool table 12 and a triangular support 13, a data acquisition and signal control system 23 and a motor control system 20 are arranged on the operating tool table 12, and the triangular support 13 is used for supporting a drilling machine sliding and connecting device 16 and a drilling machine sleeve 14.
According to the mounting method of the similar material model test supporting structure, the mounting position of the supporting structure is ensured to be accurate through the adjustable limiting device and the laser sensor positioning system; and through umbrella pole conveyer, realize effectively transporting to supporting construction, prevent that supporting construction from taking place to empty, turn round partially etc. in transportation, guarantee supporting construction's installation quality, be favorable to supporting construction in time to exert and bear the weight of the effect.
The similar material model test supporting structure mounting device comprises a supporting device, an umbrella rod conveying device, a limiting device and a supporting device, wherein the supporting device comprises a section steel bracket 29; the umbrella rod conveying device comprises an umbrella rod mounting 28, umbrella rod branches 31 and an umbrella rod grabbing head 30, wherein the umbrella rod branches 31 are arranged at one end of the umbrella rod mounting 28, the umbrella rod grabbing head 30 is grabbed by a section steel bracket 29 in the conveying process and is loosened when the section steel bracket 29 is placed; the limiting device comprises a drilling machine sleeve 14, an adjustable limiting device 26 and a laser sensor 24, wherein the adjustable limiting device 26 is arranged in the drilling machine sleeve 14 along the length direction, adjacent drilling machine sleeves 14 are connected in a tensioned mode through a steel wire rope 27, the laser sensor 24 is installed at one end, facing the test bed excavation window 7, of the drilling machine sleeve 14, and the data acquisition and signal control system 23 is in signal connection with the laser sensor 24; the supporting device comprises an operating tool table 12 and a triangular support 13, a data acquisition and signal control system 23 is arranged on the operating tool table 12, and the triangular support 13 is used for supporting a drill sleeve 14.
A similar material model test excavation and supporting structure installation method based on laser positioning comprises the following steps:
the method comprises the following steps: preparing similar materials according to physical and mechanical characteristic parameters of an actual engineering coal rock mass, firstly pouring and compacting the similar materials layer by layer according to a pre-designed layering position to form a similar material model 8, then placing the similar material model 8 on an operation platform 10 containing a model supporting plate 9 by adopting hoisting equipment, and finally placing the operation platform 10 on a test bed base 3 through hoisting;
step two: firstly, moving a model supporting plate 9 along an operation platform slideway 11, sending a similar material model 8 into a test bed operation space 5 in a test bed rear baffle 1, and then removing an operation platform 10 containing the model supporting plate 9 by adopting hoisting equipment;
step three: firstly, moving a test bed front baffle 2 to a test bed rear baffle 1 along a test bed base slideway 4, fixing the test bed rear baffle 1 and the test bed front baffle 2 by using bolts 25, and finally starting a loading hydraulic device 6 to apply displacement constraint and stress to a similar material model 8 according to the ground stress size and direction actually measured on an engineering field and the test geometric similarity ratio of the similar material model 8;
step four: firstly, placing an operation tool table 12 on the ground by adopting hoisting equipment, and fixing a drill sleeve 14 through a triangular bracket 13; before the similar material model test roadway is excavated, moving the drill sleeve 14 to a test bed excavation window 7 on the test bed front baffle 2; the laser sensor 24 is arranged at one end of the drill sleeve 14 facing the test bed excavation window 7, and a connecting wire 21 connecting the laser sensor 24 and the data acquisition and signal control system 23 is led out through a small wire outlet hole 22 on the drill sleeve 14;
step five: firstly, starting a data acquisition and signal control system 23 to send an instruction to a laser sensor 24, emitting a laser beam to a roadway, positioning the excavation profile of the roadway, and feeding back coordinate information of the excavation profile of the roadway; then, a roadway excavation coordinate instruction is issued to the motor control system 20 through the data acquisition and signal control system 23, the low-speed motor 18 drives the rotating rod 17 to rotate, and after the rotating rod 17 rotates, the spring slips 34 drive the hollow drill rod 15 in the drill sleeve 14 to move in the drill sliding and connecting device 16 along the drill moving track 35 in the circumferential and peripheral directions, so that accurate low-disturbance under-pressure excavation of a similar material model test roadway is realized; the spring slip 34 can clamp the hollow drill rod 15, so that the torque transmission of the rotating rod 17 and the movement along the moving track 35 of the drilling machine are realized; but also can lead the hollow drill rod 15 to freely rotate in multiple angles, thus being convenient for adjusting the rotation direction of the hollow drill rod 15 and preventing drill jamming;
step six: removing the similar material model test roadway excavation device after completing low-disturbance accurate excavation of the similar material model roadway;
step seven: firstly, placing an operating tool table 12 on the ground by using hoisting equipment, fixing a drilling machine sleeve 14 through a triangular support 13, and moving the drilling machine sleeve 14 into a test bed excavation window 7 on a test bed front baffle 2;
step eight: firstly, starting a data acquisition and signal control system 23 to send an instruction to a laser sensor 24, emitting a laser beam to a roadway, positioning the excavation profile of the roadway, and feeding back coordinate information of the excavation profile of the roadway; then adjusting the limiting position of the adjustable limiting device 26, wherein the adjacent adjustable limiting devices 26 are connected by a steel wire rope 27 to ensure the accuracy of the position of a transportation channel of the supporting structure and prevent the mounting position of the supporting structure from deviating; finally, the umbrella rod grabbing head 30 at the end part of the umbrella rod branch 31 is connected to the section steel support 29, the umbrella rod 28 is installed in the drill sleeve 14, the section steel support 29 is conveyed to the corresponding position of a similar material model test roadway, and the support structure is prevented from toppling, twisting and deviating in the conveying process; after the steel bracket 29 is transported, the umbrella rod opening and closing button 32 is opened by pulling the switch pull rope 33, and the umbrella rod grabbing head 30 of the umbrella rod branch 31 is separated from the steel bracket 29.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (2)
1. The utility model provides a similar material model test excavation and supporting construction based on laser positioning which characterized in that: the device comprises a similar material model test bed, a similar material model test roadway excavation device and a similar material model test supporting structure installation device;
the similar material model test bed comprises a test bed base (3), a test bed rear baffle (1), a test bed front baffle (2), an operating platform slideway (11) and an operating platform (10), wherein the test bed base slideway (4) is arranged on the test bed base (3), the test bed rear baffle (1) is fixed on the test bed base (3), the test bed front baffle (2) is installed on the test bed base slideway (4), and the test bed rear baffle (1) and the test bed front baffle (2) are opposite in position;
a test bed operation space (5) is arranged in the middle of the test bed rear baffle (1), and a loading hydraulic device (6) is arranged on the test bed rear baffle (1) and on the periphery of the test bed operation space (5);
the operation platform (10) is placed on the test bed base (3) and located between the test bed rear baffle (1) and the test bed front baffle (2), an operation platform slide way (11) is arranged on the operation platform (10), a model supporting plate (9) is installed on the operation platform slide way (11), and the model supporting plate (9) is used for placing a similar material model (8); pushing the similar material model (8) into the test bed operation space (5) through the position adjustment of the operation platform (10) and the movement of the model supporting plate (9);
a test bed excavation window (7) is arranged in the middle of the test bed front baffle (2); the test bed rear baffle (1) and the test bed front baffle (2) are attached to each other by moving the test bed front baffle (2), and the test bed excavation window (7) is opposite to the position to be excavated of the similar material model (8);
the similar material model test roadway excavation device comprises a drilling device, a control device and a supporting device;
the drilling device comprises a low-speed motor (18), a rotating rod (17), a hollow drill rod (15), a drilling machine sliding and connecting device (16) and a drilling machine sleeve (14), wherein the drilling machine sliding and connecting device (16) is fixed with the drilling machine sleeve (14); an output shaft of the low-speed motor (18) is connected with one end of a rotating rod (17), the other end of the rotating rod (17) is connected with one end of a hollow drill rod (15) through a spring slip (34), the spring slip (34) is installed on a drilling machine sliding and connecting device (16), and the hollow drill rod (15) extends out of the drilling machine sliding and connecting device (16) and is arranged in a drilling machine sleeve (14);
the control device comprises a data acquisition and signal control system (23), a motor control system (20) and a laser sensor (24), wherein the motor control system (20) controls a low-speed motor (18), the laser sensor (24) is installed at one end, facing the test bed excavation window (7), of the drill sleeve (14), and the data acquisition and signal control system (23) is in signal connection with the motor control system (20) and the laser sensor (24);
the supporting device comprises an operating tool table (12) and a triangular support (13), a data acquisition and signal control system (23) and a motor control system (20) are arranged on the operating tool table (12), and the triangular support (13) is used for supporting a drilling machine sliding and connecting device (16) and a drilling machine sleeve (14);
the similar material model test supporting structure mounting device comprises a supporting device, an umbrella rod conveying device, a limiting device and a supporting device;
the supporting device comprises a section steel bracket (29);
the umbrella rod conveying device comprises an umbrella rod mounting part (28), umbrella rod branches (31) and an umbrella rod grabbing head (30), wherein the umbrella rod branches (31) are arranged at one end of the umbrella rod mounting part (28), the umbrella rod grabbing head (30) is grabbed by a section steel bracket (29) in the conveying process and is loosened when the section steel bracket (29) is placed;
the limiting device comprises a drilling machine sleeve (14), an adjustable limiting stopper (26) and a laser sensor (24), wherein the adjustable limiting stopper (26) is arranged in the drilling machine sleeve (14) along the length direction, and adjacent drilling machine sleeves (14) are connected in a tensioned mode through a steel wire rope (27); the laser sensor (24) is arranged at one end, facing the test bed excavation window (7), of the drill sleeve (14), and the data acquisition and signal control system (23) is in signal connection with the laser sensor (24);
the supporting device comprises an operating tool table (12) and a triangular support (13), a data acquisition and signal control system (23) is arranged on the operating tool table (12), and the triangular support (13) is used for supporting the drill sleeve (14).
2. An installation method for the similar material model test excavation and supporting structure based on laser positioning as claimed in claim 1, wherein: the method comprises the following steps:
the method comprises the following steps: preparing similar materials according to physical and mechanical characteristic parameters of an actual engineering coal rock mass, firstly pouring and compacting the similar materials layer by layer according to a pre-designed layering position to form a similar material model (8), then placing the similar material model (8) on an operation platform (10) comprising a model supporting plate (9) by adopting hoisting equipment, and finally placing the operation platform (10) on a test bed base (3) by hoisting;
step two: firstly, moving a model supporting plate (9) along an operation platform slideway (11), sending a similar material model (8) into a test bed operation space (5) in a test bed rear baffle plate (1), and removing the operation platform (10) containing the model supporting plate (9) by adopting hoisting equipment;
step three: firstly, moving a test bed front baffle (2) to a test bed rear baffle (1) along a test bed base slideway (4), then fixing the test bed rear baffle (1) and the test bed front baffle (2) by using bolts (25), and finally starting a loading hydraulic device (6) to apply displacement constraint and stress to a similar material model (8) according to the ground stress size and direction actually measured on an engineering site and the test geometric similarity ratio of the similar material model (8);
step four: firstly, an operation tool table (12) is placed on the ground by adopting hoisting equipment, and a drill sleeve (14) is fixed through a triangular support (13); before the similar material model test roadway is excavated, moving a drill sleeve (14) into a test bed excavation window (7) on a test bed front baffle (2); the laser sensor (24) is arranged at one end, facing the test bed excavation window (7), of the drill sleeve (14), and a connecting line (21) for connecting the laser sensor (24) and the data acquisition and signal control system (23) is led out through a small wire outlet hole (22) in the drill sleeve (14);
step five: firstly, starting a data acquisition and signal control system (23) to send an instruction to a laser sensor (24), emitting a laser beam to a roadway, further positioning the excavation outline of the roadway, and feeding back coordinate information of the excavation outline of the roadway; then, a roadway excavation coordinate instruction is issued to a motor control system (20) through a data acquisition and signal control system (23), a low-speed motor (18) drives a rotary rod (17) to rotate, and after the rotary rod (17) rotates, a spring slip (34) drives a hollow drill rod (15) in a drill sleeve (14) to move in the circumferential and peripheral directions in a drill sliding and connecting device (16) along a drill moving track (35), so that accurate low-disturbance under-pressure excavation of a similar material model test roadway is realized;
step six: removing the similar material model test roadway excavation device after completing low-disturbance accurate excavation of the similar material model roadway;
step seven: firstly, an operation tool table (12) is placed on the ground by adopting hoisting equipment, a drill sleeve (14) is fixed through a triangular support (13), and the drill sleeve (14) is moved into a test bed excavation window (7) on a front baffle plate (2) of the test bed;
step eight: firstly, starting a data acquisition and signal control system (23) to send an instruction to a laser sensor (24), emitting a laser beam to a roadway, further positioning the excavation outline of the roadway, and feeding back coordinate information of the excavation outline of the roadway; then adjusting the limiting position of the adjustable limiting stopper (26), and connecting the adjacent adjustable limiting stoppers (26) by using a steel wire rope (27); finally, an umbrella rod grabbing head (30) at the end part of the umbrella rod branch (31) is connected to the section steel support (29), and the section steel support (29) is transported to the corresponding position of a similar material model test roadway in the drill sleeve (14) by adopting an installation umbrella rod (28); after the section steel support (29) is transported, the opening and closing button (32) of the umbrella rod is opened by pulling the switch pull rope (33) downwards, and the umbrella rod grabbing head (30) of the umbrella rod branch (31) is separated from the section steel support (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910079961.9A CN109669024B (en) | 2019-01-28 | 2019-01-28 | Installation method of similar material model test excavation and supporting structure based on laser positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910079961.9A CN109669024B (en) | 2019-01-28 | 2019-01-28 | Installation method of similar material model test excavation and supporting structure based on laser positioning |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109669024A CN109669024A (en) | 2019-04-23 |
| CN109669024B true CN109669024B (en) | 2020-02-21 |
Family
ID=66150830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910079961.9A Active CN109669024B (en) | 2019-01-28 | 2019-01-28 | Installation method of similar material model test excavation and supporting structure based on laser positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109669024B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505299A (en) * | 2020-12-10 | 2021-03-16 | 辽宁工程技术大学 | Novel multi-size similar material simulation test roadway reservation device |
| CN114964850B (en) * | 2022-06-02 | 2023-03-28 | 中国矿业大学 | Automatic excavation and non-uniform loading system and method for plane model test bed |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470274B (en) * | 2013-09-17 | 2015-06-03 | 中国神华能源股份有限公司 | Installation construction method of tunnel arch frame |
| CN103558006B (en) * | 2013-11-06 | 2016-01-13 | 中国矿业大学 | Impulsive force controllable type impulsion pressure roadway support physical simulation impact test method and device |
| CN103837360B (en) * | 2014-03-05 | 2016-06-22 | 中国矿业大学 | Tunnel pipe shed construction method simulated excavation device and implementation method thereof |
| CN104198207B (en) * | 2014-09-19 | 2017-01-25 | 西安科技大学 | Large-size roadway support laboratory simulation system and method |
| JP6309888B2 (en) * | 2014-12-25 | 2018-04-11 | 戸田建設株式会社 | Method for predicting final displacement of tunnel |
| CN105021421B (en) * | 2015-08-06 | 2018-04-03 | 中国矿业大学(北京) | A kind of coal roadway support physical model experiment method of energy positioning and guiding |
-
2019
- 2019-01-28 CN CN201910079961.9A patent/CN109669024B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109669024A (en) | 2019-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020101353A4 (en) | Indoor drilling perception test system for mechanical properties of rock masses | |
| CN107796646B (en) | Test device and test method for simulating blasting excavation unloading of deep-buried tunnel | |
| CN109855974B (en) | Overburden stress and deformation characteristic test method based on similar simulation test system | |
| KR101322125B1 (en) | Tunnel boring machine simulator | |
| JP3402519B2 (en) | Shield excavation model test method and apparatus | |
| CN114323972B (en) | Three-dimensional dynamic and static load test system and method for simulating deep roadway excavation | |
| CN109799327A (en) | A kind of visual shield tunnel construction detection of grouting effects experimental rig and method | |
| CN109669024B (en) | Installation method of similar material model test excavation and supporting structure based on laser positioning | |
| CN109060395B (en) | Test system platform for shield underpass cutting composite foundation pile body | |
| CN102031771A (en) | Deep static cone penetration test method for geotechnical engineering | |
| CN104833569B (en) | Suitable for the excavation relief arrangement of geomechanical model test | |
| CN103063335A (en) | Three-dimensional geological survey testing method of deep portion crustal stress based on loading monitoring data | |
| CN113669063A (en) | Roof cutting self-entry surrounding rock control method | |
| CN204924522U (en) | A moment of torsion detection device for revolving dig rig unit head | |
| CN209821195U (en) | Visual shield tunnel construction slip casting effect detection test device | |
| CN108051306B (en) | Test device for testing influence of rock separation layer dislocation on anchor cable breakage | |
| CN113551637B (en) | Monitoring device and method for surrounding rock deformation in whole process of tunnel construction based on TBM | |
| CN108489746B (en) | Device and method for laying soil pressure gauge monitoring model shield machine in spiral soil discharger | |
| CN204594983U (en) | With the shield structure ground adaptability tester of native cabin simulation | |
| CN210374907U (en) | Portable measuring scale for coal mine measurement engineering | |
| CN108709822B (en) | Friction and wear test device and test method for shield cutter | |
| CN114753761B (en) | Digital drilling equipment and measuring method for in-situ measurement of engineering site | |
| CN208537201U (en) | Test device for simulating shield tunneling machine tunneling | |
| CN111535318A (en) | Precise installation and adjustment device for steel pipe column by reverse construction method and use method | |
| CN104458420B (en) | A kind of Rock And Soil in situ strength bearing plate test device and using method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |