CN116754082A - Combined body heating and temperature measuring device for fixing and heating rock-soil mass conventional test sample - Google Patents
Combined body heating and temperature measuring device for fixing and heating rock-soil mass conventional test sample Download PDFInfo
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- CN116754082A CN116754082A CN202310911258.6A CN202310911258A CN116754082A CN 116754082 A CN116754082 A CN 116754082A CN 202310911258 A CN202310911258 A CN 202310911258A CN 116754082 A CN116754082 A CN 116754082A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 145
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 239000002689 soil Substances 0.000 title claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 82
- 239000004411 aluminium Substances 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 22
- 238000009529 body temperature measurement Methods 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 61
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005641 tunneling Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 238000011160 research Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 208000013201 Stress fracture Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention designs a combined body heating and temperature measuring device for fixing and heating a conventional test sample of a rock-soil body, wherein a box body consisting of an upper aluminum heating and accommodating box, a lower aluminum heating and accommodating box and aluminum heating and fixing side plates at two sides is arranged on a movable support of a base and is fixed by a knob fixing support, heating rod holes are formed in the upper aluminum heating and accommodating box and the aluminum heating and fixing side plates at one side of the upper aluminum heating and accommodating box, heating rods are placed in the upper aluminum heating and accommodating box and the lower aluminum heating and fixing side plates at the other side of the upper aluminum heating and accommodating box, and a temperature detecting hole is formed in the aluminum heating and fixing side plate at the other side of the upper aluminum heating and accommodating box and the lower aluminum heating and accommodating box, and the temperature detecting device is arranged on the aluminum heating and fixing side plates at the other side of the upper aluminum heating and accommodating box. The invention has the advantages of enriching the convenience degree of manufacturing different rock test blocks, being beneficial to avoiding the problem that high-temperature rock samples and large-scale test equipment are difficult to obtain, reducing the temperature loss and the damage to the samples in the carrying process to the greatest extent, and reducing the manufacturing cost.
Description
Technical Field
The invention relates to a method for operating a fixing and heating process of a combined body heating temperature measuring device for fixing and heating a conventional test sample of a rock-soil body and the field of mechanical property test.
Background
Since the seventies of the last century, the demand for foundation engineering such as rock soil and tunnels has increased greatly as the economy of China has increased, and full-face hard rock tunnel boring machines have been widely used in the tunnel engineering of China, in which the hob and rock of the tunnel boring machine interact to generate high temperature or directly encounter high temperature rock strata in the large-burial depth and long-distance hard rock tunneling environments, and the rock is affected by temperature and changes its mechanical properties and damage modes. The hob shows poor geological adaptability and very serious failure when tunneling under complex geological environments such as high-temperature rock. For example, abnormal abrasion of the hob, unsmooth tunneling process and the like, the rock breaking mechanism is changed, and meanwhile, the construction problems of large tunneling loss, low rock breaking efficiency, poor stability and the like of the hob are caused, and a large amount of additional energy is consumed. Therefore, rock temperature is inevitably an important factor affecting the tunneling efficiency of the tunneling machine.
Based on the background, considering the influence of rock temperature in tunneling, a simple instrument is required to simulate high-temperature rock and a loading test is required to be used for researching the rock breaking characteristics of the hob at different rock temperatures, and the change rule is required to be mastered based on the easily-operated indoor test research data. The method comprises the steps of disclosing the influence of rock temperature on rock breaking of the hob and reasonably selecting a hob structure and tunneling parameters aiming at different rock temperature conditions, obtaining the tunneling parameters of a reasonable cutterhead structure, improving the rock breaking efficiency of the hob and the service life of the hob, and establishing the damage criterion of the rock at different temperatures and the influence rule along with the temperature change. This is critical to ensuring efficient, safe, reliable tunneling and has become an important issue of concern to expert students.
The prior research is less related to the design of a combined body heating temperature measuring device for fixing and heating a conventional test sample of a rock mass, so that the influence of the rock temperature on the interaction mechanism of the disc cutter and the rock and the influence rule of the disc cutter on rock breaking under the action of different rock temperatures are deeply analyzed and researched by referring to a large number of domestic and foreign documents and providing a simple operation method and a mechanical property test. Many expert scholars at home and abroad have achieved a lot of remarkable results through research. Mainly discussing the micro-cracking mechanism of granite under the action of temperature and the mechanical property after the action of high temperature; the fracture condition of the rock under the action of different temperatures is obtained, and the acoustic emission characteristics of the rock damage process under the action of high temperature are obtained; the Poisson's ratio, elastic modulus, fracture orientation, compressive strength and rock micro-fracture property of the rock at different temperatures are discussed, and the change of the rock mechanical property along with the temperature and time, the damage mechanism, the damage process and the fracture characteristic is obtained. And (5) researching the deformation parameters of rocks with different strengths, the relation between uniaxial compressive strength and temperature and the change of elastic modulus with temperature.
Disclosure of Invention
In order to solve the problems in the prior art, the invention relates to a combined body heating and temperature measuring device for fixing and heating a conventional test sample of a rock-soil body and an operation method. The invention aims to provide a simple heating test instrument device for a conventional rock-soil body test sample, which simulates a heating environment and obtains the rock-soil body test sample conforming to engineering practice. The device can be designed to perfect the method of the commonly used rock-soil body indoor mechanical test research to a certain extent. The invention designs a combined body heating and temperature measuring device for fixing and heating a conventional test sample of a rock-soil body, which comprises a base movable bracket and is characterized in that: be provided with lower part aluminium system heating on base movable support and hold the box, it holds the box to inlay on lower part aluminium system heating holds the box and is equipped with upper portion aluminium system heating, lower part aluminium system heating hold box and upper portion aluminium system heating hold the box and be half square, it holds the intraductal heating rod hole that is provided with of panel that holds the box to inlay on lower part aluminium system heating holds the box, has placed the heating rod in the heating rod hole, the both sides that lower part aluminium system heating holds the box and upper portion aluminium system heating holds the half square box body that the box constitutes are provided with aluminium system heating fixed curb plate, set up the temperature detection hole on the aluminium system heating fixed curb plate of one side, be provided with the heating rod hole in the panel of the aluminium system heating fixed curb plate of opposite side, the heating rod is placed in the heating rod hole, the aluminium system heating fixed curb plate of both sides is fixed by knob fixed bolster, install temperature detecting device on the knob fixed bolster. Lugs or corresponding clamping grooves are arranged on the contact surface between the lower aluminum heating and accommodating box and the upper aluminum heating and accommodating box. Lugs or corresponding clamping grooves are arranged on the contact surfaces of the semi-square box body formed by the lower aluminum heating accommodating box and the upper aluminum heating accommodating box and the aluminum heating fixing side plates on two sides. The knob fixed bolster comprises two crossbeams and two connecting rods, the both ends of two connecting rods respectively are provided with the external screw thread, two connecting rods are located the through-hole of the upper and lower both ends of the fixed curb plate of aluminium system heating that is equipped with the heating rod additional, two crossbeams are located the both ends of connecting rod, constitute a four square frame, one end is twisted by the hand wheel, the other end is twisted by the nut, be provided with the double-screw bolt in the middle of the crossbeam of the fixed curb plate one side of aluminium system heating of seting up the temperature detection hole, connect temperature detection device by the hand wheel screw on the double-screw bolt, temperature detection device comprises temperature detection card strip and the temperature measurement clamp plate at both ends, the through-hole has been seted up in the middle of the temperature detection card strip, the through-hole suit is on the double-screw bolt. Compared with the existing sample device and technology, the invention can enrich the convenience degree of manufacturing different rock test blocks, is beneficial to avoiding the problem that high-temperature rock samples and large-scale test equipment are difficult to obtain, furthest reduces the temperature loss and the damage to the samples in the process of carrying, and simultaneously reduces the manufacturing cost. The method can more conveniently explore the damage mode, stress-strain characteristics and the like of hob rock interaction by manufacturing the high-temperature rock test block. Through a series of mechanical tests and indoor damage tests, the mechanical characteristics of interaction of the hob and the high-temperature rock are researched and analyzed, a damage criterion of the rock at different temperatures and an influence rule model along with temperature change are constructed in an auxiliary mode, the accuracy of test sample verification theory and simulation research results is utilized, the damage criterion of the rock at different temperatures and the influence rule along with temperature change are analyzed in depth, the comparison research of the test and the simulation is facilitated, and a certain reference guiding value is provided for engineering practice.
Drawings
Fig. 1 is a schematic perspective view (right side) of the present invention.
Fig. 2 is a schematic perspective view (left side) of the present invention.
Fig. 3 is a schematic perspective exploded view of the present invention.
Fig. 4 is a schematic perspective view of a high Wen Yan soil test block of the present invention.
The invention will now be described in detail with reference to the drawings and examples.
The utility model provides a in picture assembly intensification temperature measuring device of ground body conventional test sample fixed heating, includes base movable support 1, its characterized in that: be provided with lower part aluminium system heating on the base movable support and hold box 2, it holds box 3 to inlay on lower part aluminium system heating and hold the box and be equipped with upper portion aluminium system heating, lower part aluminium system heating hold box and upper portion aluminium system heating hold the box and be half square, be provided with the heating rod hole 4 in the panel that lower part aluminium system heating held box and upper portion aluminium system heating hold the box, place heating rod 5 in the heating rod hole, the both sides of the half square box body that lower part aluminium system heating held box and upper portion aluminium system heating held the box constitute are provided with aluminium system heating fixed curb plate 61 and aluminium system heating fixed curb plate 62, temperature detection hole 7 has been seted up on the aluminium system heating fixed curb plate 62 of one side, be provided with heating rod hole 8 in the panel of the aluminium system heating fixed curb plate 61 of opposite side, place heating rod 9 in the heating rod hole, the aluminium system heating fixed curb plate of both sides is fixed by knob fixed bolster 10, install temperature-detecting device 11 on the knob fixed bolster. Lugs 12 or corresponding clamping grooves 13 are arranged on the contact surface between the lower aluminum heating and accommodating box and the upper aluminum heating and accommodating box. Lugs 14 or corresponding clamping grooves 15 are arranged on the contact surfaces of the semi-square box body formed by the lower aluminum heating accommodating box and the upper aluminum heating accommodating box and the aluminum heating fixed side plates on two sides. The knob fixing support is composed of two cross beams 16 and two connecting rods 17, external threads are respectively arranged at the two ends of the two connecting rods, the two connecting rods are located in through holes 18 in the upper end and the lower end of an aluminum heating fixing side plate provided with heating rods, the two cross beams are located at the two ends of the connecting rods to form a four-square frame, one end of each cross beam is screwed by a hand wheel 19, the other end of each cross beam is screwed by a nut 20, a stud 21 is arranged in the middle of the cross beam on one side of the aluminum heating fixing side plate provided with a temperature detection hole, a temperature detection device 11 is screwed on each stud by a hand wheel 22, the temperature detection device is composed of a temperature detection clamping strip 23 and temperature detection pressing plates 24 at the two ends, the temperature detection pressing plates are correspondingly arranged on the temperature detection holes, through holes 25 are formed in the middle of the temperature detection clamping strips, and the through holes are sleeved on the studs. The heating rods are all connected with a power supply through wires 26, and the power supply is controlled by a controller.
According to the invention, aiming at similar rock test block materials commonly adopted in indoor mechanical tests, a fixed and heated combined body device is utilized to simulate and manufacture a soil body sample 27 with the height Wen Yan, and the length, width and height of the soil body sample with the height Wen Yan are 150mm as shown in a figure 4 after the soil body sample is completed. And designing and preparing test blocks special for rock breaking characteristic tests of the hob under different rock temperature conditions, and preparing rock and soil mass samples with various different temperatures. And removing the assembly device when the heating process is finished, pushing out the high-temperature sample from the lower aluminum heating containing box, placing the high-temperature sample on the base movable support, lifting the sample to a position flush with the mechanical test bed, pushing out the high-temperature sample from the base movable support, and placing the high-temperature sample on the loading position of the mechanical test bed for rock breaking test.
The invention is designed according to the type and distribution of the heating rods for test, as shown in figure 3, 8 heating rod holes and 8 heating rods are respectively arranged in the plates of the lower aluminum heating accommodating box 2 and the upper aluminum heating accommodating box 3, 16 heating rod power wire connecting small holes (power wire routing of the heating rods for the upper and lower aluminum heating accommodating boxes) and 2 temperature detection holes are distributed on the front surface of the aluminum heating fixing side plate 62 on one side, and 4 heating rod holes and 4 heating rods are respectively arranged in the plates of the aluminum heating fixing side plate 61 on the other side. The invention adopts the heating rod as a single-head heating rod of a common temperature equalizing die in the industrial field, the heating power of the single heating rod is 100w, the highest temperature of the single heating rod can reach more than 800 ℃, and the uniform heating of the surface of an object can be realized by combination.
The invention relates to a research on the interaction mechanism law of a hob and rock in a high-temperature rock environment in underground space engineering, and the rock breaking mechanism of the hob needs to be researched from three aspects of theory, simulation and test. The invention relates to a design and operation method of related test equipment, mainly provides a new test research mode in the process of developing a test of the influence law of rock temperature on rock breaking characteristics of a hob, designs a combined body temperature-raising temperature measuring device, prepares rock samples with different temperatures, heats the rock test blocks through the rock heating device, simulates the high-temperature rock environment and different geological factors in the hob tunneling process, detects the temperature change of the rock through a linear temperature device, and obtains the rock test blocks with specified temperature. The rock breaking process of the hob is tested through the hob rock breaking test bed, the rock breaking load change of the hob and the breaking phenomenon of the rock at different rock temperatures are recorded, the breaking forms of rock materials are counted and recorded, the smooth proceeding of the mechanical test is facilitated, the formation expression rule and conclusion of the hob at the specific temperature are obtained more easily, and the designed combined body device has certain use value and engineering significance in the test process.
The application method of the combined body heating and temperature measuring device for the fixed heating of the conventional test sample of the rock-soil body comprises the following steps:
step A: the assembly device is installed and operated, a movable support of the base is firstly placed according to the operation sequence, the lower aluminum heating containing box is placed on the movable support, and the rock-soil body test block is aligned and placed in the containing box.
And (B) step (B): the upper aluminum heating accommodating box and the two aluminum heating fixing side plates are assembled, and the clamping groove and the two lugs are respectively positioned at corresponding positions.
Step C: and (3) penetrating the knob fixing bracket through bolt holes of the two side plates, screwing the hand wheel and fixing the rock-soil mass test block.
Step D: the temperature measuring contacts of the linear electronic temperature detector are fixed at two ends of the temperature detecting clamping strip, and the two ends of the temperature detecting clamping strip are arranged in the temperature measuring holes of the aluminum heating fixing side plate.
Step E: and (5) screwing the hand wheel to fix the temperature detection clamping strip, so that the temperature measurement contact is attached to the rock wall.
Step F: the assembled assembly device is rotated by 90 degrees and placed on the movable support of the base, the power line is electrified to start heating, and meanwhile, the temperature change of the linear electronic temperature detector is observed.
Step G: and when the average temperature of the two detection positions reaches the required temperature value and is slightly higher than the required value, the power line is disconnected.
Step H: and (3) rotating the assembly device by 90 degrees again, placing the assembly device on the movable support of the base, and starting to detach the assembly by rotating the two hand wheels of the fixed support and taking out the test block.
Step I: and removing the assembly device when the heating process is finished, sequentially removing the fixed support, the two aluminum heating fixed side plates, the upper aluminum heating containing box and reserving the lower aluminum heating containing box and the base movable support.
Step J: pushing out the high-temperature sample from the lower aluminum heating containing box, placing the high-temperature sample on the base movable support, lifting the sample to a position flush with the mechanical test bed, pushing out the high-temperature sample from the base movable support, placing the high-temperature sample on the loading position of the mechanical test bed, and gradually carrying out a rock breaking test.
Claims (4)
1. The utility model provides a ground body conventional test sample fixed heating's assembly intensification temperature measuring device, includes base movable support, its characterized in that: be provided with lower part aluminium system heating on base movable support and hold the box, it holds the box to inlay on lower part aluminium system heating holds the box and is equipped with upper portion aluminium system heating, lower part aluminium system heating hold box and upper portion aluminium system heating hold the box and be half square, it holds the intraductal heating rod hole that is provided with of panel that holds the box to inlay on lower part aluminium system heating holds the box, has placed the heating rod in the heating rod hole, the both sides that lower part aluminium system heating holds the box and upper portion aluminium system heating holds the half square box body that the box constitutes are provided with aluminium system heating fixed curb plate, set up the temperature detection hole on the aluminium system heating fixed curb plate of one side, be provided with the heating rod hole in the panel of the aluminium system heating fixed curb plate of opposite side, the heating rod is placed in the heating rod hole, the aluminium system heating fixed curb plate of both sides is fixed by knob fixed bolster, install temperature detecting device on the knob fixed bolster.
2. The assembled body temperature-raising and measuring device for fixing and heating a rock-soil body conventional test sample according to claim 1, which is characterized in that: lugs or corresponding clamping grooves are arranged on the contact surface between the lower aluminum heating and accommodating box and the upper aluminum heating and accommodating box.
3. The assembled body temperature-raising and measuring device for fixing and heating a rock-soil body conventional test sample according to claim 1, which is characterized in that: lugs or corresponding clamping grooves are arranged on the contact surfaces of the semi-square box body formed by the lower aluminum heating accommodating box and the upper aluminum heating accommodating box and the aluminum heating fixing side plates on two sides.
4. The assembled body temperature-raising and measuring device for fixing and heating a rock-soil body conventional test sample according to claim 1, which is characterized in that: the knob fixed bolster comprises two crossbeams and two connecting rods, the both ends of two connecting rods respectively are provided with the external screw thread, two connecting rods are located the through-hole of the upper and lower both ends of the fixed curb plate of aluminium system heating that is equipped with the heating rod additional, two crossbeams are located the both ends of connecting rod, constitute a four square frame, one end is twisted by the hand wheel, the other end is twisted by the nut, be provided with the double-screw bolt in the middle of the crossbeam of the fixed curb plate one side of aluminium system heating of seting up the temperature detection hole, connect temperature detection device by the hand wheel screw on the double-screw bolt, temperature detection device comprises temperature detection card strip and the temperature measurement clamp plate at both ends, the through-hole has been seted up in the middle of the temperature detection card strip, the through-hole suit is on the double-screw bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310911258.6A CN116754082A (en) | 2023-07-24 | 2023-07-24 | Combined body heating and temperature measuring device for fixing and heating rock-soil mass conventional test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310911258.6A CN116754082A (en) | 2023-07-24 | 2023-07-24 | Combined body heating and temperature measuring device for fixing and heating rock-soil mass conventional test sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116754082A true CN116754082A (en) | 2023-09-15 |
Family
ID=87957330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310911258.6A Pending CN116754082A (en) | 2023-07-24 | 2023-07-24 | Combined body heating and temperature measuring device for fixing and heating rock-soil mass conventional test sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116754082A (en) |
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2023
- 2023-07-24 CN CN202310911258.6A patent/CN116754082A/en active Pending
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