CN110672356B

CN110672356B - TBM (tunnel boring machine) carrying type rock powder sampling device and method thereof

Info

Publication number: CN110672356B
Application number: CN201910843271.6A
Authority: CN
Inventors: 林鹏; 谢辉辉; 许振浩; 黄鑫; 黄靖哲; 吴民睿; 潘东东
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2021-10-08
Anticipated expiration: 2039-09-06
Also published as: CN110672356A

Abstract

The utility model provides a TBM carrying type rock powder sampling device and method, which comprises a protection device, a stand column, a hydraulic arm, a percussion drill, a purging device, a sample loading bottle, a turntable, an ink jet printer and a control system. The protective device protects the entire sampling device. The upright posts play a role in supporting the hydraulic arms. The retraction of the hydraulic arm controls the movement of the percussion drill. The front end of the impact drilling machine is provided with a material collecting cabin, and the impact drilling machine is responsible for crushing tunnel surrounding rocks and collecting powder through the material collecting cabin. The blowing device is responsible for blowing and drying the residual powder in the material collecting cabin after sampling is finished, the rotary plate is provided with an auxiliary code spraying machine for spraying codes on the bottle body of the sample loading bottle, and simultaneously, the weight of the sample in the sample loading bottle can be weighed. The code spraying machine is connected with a microcomputer of the TBM main control room, and can transmit the sampling mileage information to the code spraying machine and spray-print the sampling mileage information on the bottle body of the sample bottle. And the control system controls the work and stop of the hydraulic arm, the percussion drill, the purging device, the turntable and the ink-jet printer.

Description

TBM (tunnel boring machine) carrying type rock powder sampling device and method thereof

Technical Field

The disclosure belongs to the field of rock-soil content measurement, and particularly relates to a TBM (tunnel boring machine) carrying type rock powder sampling device and method.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The tunnel full-face rock tunneling machine is called TBM for short, is tunnel construction equipment specially used in a hard rock stratum, and is most suitable for construction by adopting a TBM method when the length-diameter ratio of a deep tunnel reaches or exceeds 600-1000. The method has the advantages of high tunneling speed, small construction disturbance, high tunneling quality, high comprehensive economic and social benefits and the like, but the TBM has poor adaptability to geological conditions, and is often subjected to disasters such as water inrush, collapse, large deformation and the like in the construction process, so that the tunneling machine has major accidents of blocking, damage, scrapping and even casualties. In addition, the TBM can also suffer from the problems of reduced rock breaking performance of a cutter head system, low tunneling efficiency and the like caused by serious cutter head abrasion.

Therefore, in the TBM construction process, the formation lithology characteristics, the mineral combination type and the mineral content need to be known in time so as to analyze the engineering and hydrogeological conditions in front of the tunnel face, predict the cutter head abrasion condition, adjust the tunneling parameters in time and the like. The most accurate and rapid method for analyzing the type and content of minerals in the rock is powder X-ray diffraction analysis, but the method needs rock powder with the particle size of less than 100 meshes for testing samples. At present, the method for obtaining rock powder in tunnel surrounding rock is to take rock slag or rock core in the tunnel, grind the rock slag or the rock core by using a mortar or a ball mill and the like, and manually screen the ground rock slag or the rock core to obtain a sample meeting X-ray diffraction analysis and test requirements. The method has multiple operation steps and long time consumption, and the timeliness of geological prediction, tunneling parameter adjustment and the like is greatly influenced. Therefore, it is an urgent problem to develop a TBM-mounted rock powder sampling device so as to be able to quickly obtain rock powder in surrounding rocks and use the rock powder for X-ray diffraction analysis and test.

Disclosure of Invention

The invention aims to solve the problems and provides a TBM carrying type rock powder sampling device and a method thereof.

According to some embodiments, the following technical scheme is adopted in the disclosure:

the utility model provides a TBM carries formula rock powder sampling device carries in the boots side of propping of open-type TBM, includes hydraulic arm, percussion drill, sweeps device, dress appearance bottle, carousel, ink jet numbering machine and control system, wherein:

a clamping groove for mounting a material collecting cabin is formed in the front end of the percussion drill, a spring is arranged in the clamping groove, and one end of the material collecting cabin is sealed and is connected with the spring in the clamping groove; the other end of the tunnel wall is provided with a collecting port, a drill bit of the impact drilling machine penetrates through the collecting port, and the impact drilling machine is responsible for crushing tunnel wall rock and collecting powder through a collecting cabin;

the hydraulic arm is arranged at the rear end of the percussion drill and used for controlling the percussion drill to move in the horizontal direction;

the purging device is arranged at the top of the collecting cabin and is responsible for purging the residual powder in the collecting cabin after sampling is finished;

the sample loading bottle is placed on the turntable below the powder discharge port of the material collecting cabin and is used for collecting rock powder;

the rotary table is a rotatable electronic scale, the rotary table can drive the sample containing bottle to slowly rotate, the code spraying machine is assisted to spray codes on the bottle body of the sample containing bottle, and meanwhile, the sample weight in the sample containing bottle can be weighed;

the code spraying machine is connected with a microcomputer of the TBM main control room, and can transmit the sampling mileage information to the code spraying machine and spray-print the sampling mileage information on the bottle body of the sample bottle.

And the control system controls the hydraulic arm, the percussion drill, the purging device, the turntable and the ink-jet printer to work and stop.

As a further technical scheme, TBM carries on formula rock powder sampling device still includes a protector, protector includes base, lateral wall and ceiling, sets up the lateral wall on the base, and the lateral wall top is provided with the ceiling that prevents falling rocks and infiltration.

As a further technical scheme, the hydraulic arm is supported by an upright post, and the upright post is fixed on a base of the protection device.

As a further technical scheme, the base is made of a stainless steel plate and is rectangular, the side wall is vertically welded above the base, and the ceiling is made of the stainless steel plate.

As a further technical scheme, a clamping groove for mounting a material collecting cabin is formed in the front end of the percussion drill, a spring is arranged in the clamping groove, one side of the material collecting cabin is connected with the spring in the clamping groove, and the spring can stretch and retract along with the movement of the material collecting cabin so as to ensure that the material collecting cabin is always in close contact with surrounding rocks of a tunnel;

as a further technical scheme, the middle part of the material collecting cabin is provided with a material collecting hopper for collecting rock powder cut by the percussion drill, and a detachable screen is arranged below the material collecting hopper and is responsible for screening the rock powder.

As a further technical scheme, two discharge ports are arranged below the screen mesh, one discharge port is a powder discharge port, the other discharge port is a waste discharge port, and the powder discharge port and the waste discharge port are respectively provided with a valve.

As a further technical scheme, a rubber ring is arranged at the position of a collecting port of the collecting cabin. When the percussion bit is driven into the surrounding rock to work, the rubber ring plays a buffering role to protect the collecting opening of the collecting cabin from being tightly attached to the surrounding rock.

As a further technical scheme, the blowing device comprises a high-pressure blower and a vent pipe; the high-pressure blower is fixedly arranged at the upper part of the percussion drill and provides a powerful air source for the blowing device, and powder remained in the collecting cabin can be blown clean; the ventilation pipe is provided with an air inlet and two air outlets, the inlet is connected with the high-pressure air blower port, and the two air outlets are respectively connected to two ends above the material collecting hopper of the material collecting cabin.

The working method based on the device comprises the following steps:

when a cutter head of the TBM works, a supporting shoe of the TBM can be tightly attached to surrounding rocks to provide propelling force for the cutter head of the TBM to cut the rocks, and a hydraulic arm is started to enable a drill bit of the impact drilling machine to be in contact with the surrounding rocks;

and starting a switch of the percussion drill, and simultaneously controlling the hydraulic arm to slowly push the percussion drill to enable the drill bit to continuously drill into the surrounding rock. At the moment, the rubber ring at the collecting opening is tightly attached to the surrounding rock, and rock powder enters the collecting hopper from the collecting opening;

opening a powder material outlet valve while keeping a waste material outlet valve closed, so that powder in the collecting hopper falls into a sample loading bottle through a screen below the collecting hopper and a powder material outlet;

when the powder amount in the sample bottle reaches a certain mass, the percussion drill stops working, controls the hydraulic arm to retract, and closes the powder discharge hole.

The turntable starts to rotate slowly, and meanwhile, the code spraying machine starts to work and sprays and prints the sampling mileage on the bottle body;

taking down and sealing the sample bottles, and meanwhile, placing new sample bottles on a turntable;

opening a waste material discharge port, simultaneously taking down the screen, opening the high-pressure blower, blowing the whole material collecting cabin, and allowing the blown waste material to fall into a tunnel excavation space through the waste material discharge port;

after the purging is completed, the high-pressure blowing blower and the waste material discharge port valve are closed, and meanwhile, the screen after manual cleaning is installed, so that the rock powder sampling work of one cycle is completed.

Compared with the prior art, the beneficial effect of this disclosure is:

the method is carried with the TBM, is easy to operate, and can be used for collecting the surrounding rock powder in the TBM tunneling working process at any time.

This openly can realize rock powder sample work's automation and continuity in the tunnel, greatly reduced the work load of artifical sample, grinding. The screen is added in the sampling device, and the obtained rock powder can be automatically screened so as to meet the requirements of some rock component testing work. Two discharge ports are arranged, and the sample can be selected to be used or discarded according to actual requirements. In addition, an ink-jet printer is arranged, so that the automatic recording of the sampling mileage can be realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a block diagram of the hammer drill of the present invention;

fig. 3 is a flow chart of the operation of the present apparatus.

Wherein 1, TBM supporting shoes; 2. a base; 3. a side wall; 4. a ceiling; 5. a column; 6. a hydraulic arm; 7. a percussion drill; 8. a high pressure blower; 9. a vent pipe; 10. loading a sample bottle; 11. a turntable; 12. an ink jet printer; 13. a spring; 14. a collection hopper; 15. a percussion drill bit; 16. screening a screen; 17. a valve; 18. a powder discharge port; 19. a waste material outlet; 20. a collection port; 21. a rubber ring; 22. and (7) surrounding rocks.

The specific implementation mode is as follows:

the present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example 1

The TBM carrying type rock powder sampling device disclosed in the embodiment comprises a base 2, a side wall 3, a ceiling 4, a vertical column 5, a hydraulic arm 6, a percussion drill 7, a high-pressure blower 8, a ventilation pipe 9, a sample loading bottle 10, a turntable 11 and an ink-jet printer 12 as shown in figure 1.

The base 2, the side wall 3 and the ceiling 4 jointly form a protective device of the sampling device, which can prevent falling rocks, water seepage and the like at the vault of the tunnel from damaging internal instrument parts and can also provide a supporting function for other parts of the system, wherein the preferable base 2 is made of a stainless steel plate, and the ceiling 4 is also made of a stainless steel plate; the whole outline of the base 2 is rectangular or other shapes, as long as the base has a supporting function, the side wall 3 is vertically welded above the base, one end of the ceiling 4 is connected with the side wall, the other end of the ceiling extends outwards, and the protection upright post 5, the hydraulic arm 6, the percussion drill 7, the high-pressure blower 8, the ventilation pipe 9, the sample bottle 10, the turntable 11, the ink-jet printer 12 and the like are connected with one another

The upright post 5 is vertically arranged on the base 2 and plays a role of supporting the hydraulic arm 6.

The cylinder body part of the hydraulic arm 6 is vertically and fixedly arranged on the side wall 3, the driving part is fixedly connected with the tail part of the impact drilling machine 7, the cylinder body is also connected with the upright post 5, and the contraction of the hydraulic arm can control the impact drilling machine to move left and right and provide thrust for the work of the impact drilling machine.

As shown in fig. 2, the impact drilling machine is an improved impact drilling machine, and is the biggest difference from the existing impact drilling machine in that the front end of the improved impact drilling machine is provided with a clamping groove specially used for installing a powder cabin, a spring 13 is arranged in the clamping groove, one side of the material collecting cabin is connected with the spring in the clamping groove, and the spring can stretch and retract along with the movement of the material collecting cabin so as to ensure that the material collecting cabin is always in close contact with the surrounding rock of the tunnel.

The material collecting cabin is a hollow shell integrally, the left end of the material collecting cabin is sealed and is connected with the spring 13, the right end of the material collecting cabin is opened to be used as a collecting port, and a drill bit of the percussion drill penetrates through the end; a blowing device is arranged at the top of the aggregate bin, a collecting hopper 14 is arranged in the middle of the bottom of the aggregate bin, and rock powder cut by a percussion bit 15 is collected at the collecting hopper; preferably, the shape of the collection hopper 14 can be selected to adopt a conical structure, so as to facilitate the falling of rock powder.

Further, collection hopper below is installed and is dismantled screen cloth 16, is responsible for sieving the rock powder, and wherein the aperture of screen cloth can set up the multiple, can satisfy different powder particle size demands, and in this embodiment, the aperture of screen cloth sets up 100 meshes and 200 meshes two kinds.

Further, two discharge ports are arranged below the screen, one is a powder discharge port 18, the other is a waste discharge port 19, and the powder discharge port 18 and the waste discharge port 19 are respectively provided with a valve 17; when the device normally works, a valve at the waste outlet is closed, and a valve at the powder discharge port is opened; when the powder amount in the sample bottle reaches a certain mass, the percussion drill stops working, the hydraulic arm retracts, and the powder discharge port is closed; and taking down the sample bottles and sealing the sample bottles, and meanwhile, placing new sample bottles on the rotary disc. And opening a valve of the waste material discharge hole 19, simultaneously taking down the screen 16, opening the high-pressure blower 8, purging the whole material collecting cabin, and enabling the purged waste material to fall into the tunnel excavation space through the waste material discharge hole 19.

The right end of the collecting cabin is provided with a collecting port 20 which is responsible for collecting rock powder cut by the percussion drill. Further, rubber ring 21 is still installed to the collection mouth front end in the storehouse of gathering materials, and when percussion bit was beaten into and is carried out work in country rock 22, rubber ring 21 played the cushioning effect and protected the collection mouth in the storehouse of gathering materials and can hug closely the country rock.

Furthermore, the blowing device comprises a high-pressure blower 8 and a vent pipe 9, wherein the high-pressure blower is fixedly arranged at the upper part of the percussion drill and provides a strong air source for the blowing device, so that the powder remained in the collecting cabin can be blown clean. The ventilation pipe is provided with an air inlet and two air outlets, the inlet is connected with the high-pressure air blower port, and the two air outlets are respectively connected to the two ends above the material collecting hopper of the material collecting cabin;

it should be noted that the high-pressure blower mentioned above is a blower that can meet the wind demand, and the high pressure is not specified to a certain pressure value.

Further, the sample bottle 10 in the embodiment is placed on a turntable below a powder discharge port of the aggregate chamber and is used for collecting rock powder; the material and shape of the sampling bottle are not limited.

Further, the turntable 11 in this embodiment is a rotatable electronic scale, and is fixedly mounted on the base below the powder discharge port of the material collecting chamber. The turntable 11 can drive the sample bottle 10 to rotate slowly, the auxiliary code spraying machine sprays codes on the body of the sample bottle 10, and meanwhile, the weight of samples in the sample bottle can be weighed.

The specific structure of the rotatable electronic scale can be that a rotating base is additionally arranged at the bottom of the existing electronic scale.

Further, the code spraying machine 12 is connected with a microcomputer of a TBM main control room, and can transmit the sampling mileage information to the code spraying machine and spray-print the sampling mileage information on the bottle body of the sample bottle; the ink jet printer 12 is an existing ink jet printer, and thus its specific structure is not described here.

Example 2

The present embodiment proposes a method for using a TBM-mounted rock powder sampling device based on embodiment 1, as shown in fig. 3, including the following steps:

step A: when the cutterhead of the TBM works, the supporting shoe 1 of the TBM can tightly cling to the surrounding rock 22 to provide propelling force for the cutterhead of the TBM to cut the rock. The hydraulic arm 6 is now activated and the drill bit 15 of the percussion drill is brought into contact with the surrounding rock 22.

And step B, starting a switch of the percussion drill, and simultaneously controlling the hydraulic arm 6 to slowly push the percussion drill to enable the drill bit 15 to continuously drill into the surrounding rock 22. At this time, the rubber ring 21 at the collecting port is tightly attached to the surrounding rock, and rock powder enters the collecting hopper 14 from the collecting port 20.

And C: the valve 17 of the powder outlet 18 is opened while the valve 17 of the waste outlet 19 is kept closed, and the rock powder in the collecting hopper 14 falls into the sample bottle 10 through the screen 16 and the powder outlet below the rock powder.

Step D: when the powder amount in the sample bottle 10 reaches a certain mass, the percussion drill 7 stops working, the hydraulic arm 6 retracts, and the powder discharge port 18 is closed.

Step E: the turntable 11 rotates slowly, and the code spraying machine 12 starts to work and sprays and prints the sampling mileage on the bottle body.

Step F: the sample vial 10 is removed and sealed while a new sample vial is placed on the carousel.

Step G: and opening a waste material discharge hole 19, simultaneously taking down the screen 16, opening the high-pressure blower 8, purging the whole material collecting cabin, and enabling the purged waste material to fall into a tunnel excavation space through the waste material discharge hole 19.

Step H: after the purging is finished, the high-pressure blower 8 and the valve 17 of the waste material outlet 19 are closed, and meanwhile, a screen after manual cleaning is installed, so that one cycle of rock powder sampling work is finished.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.

Claims

1. The utility model provides a TBM carries on formula rock powder sampling device carries in open-type TBM's boots side, its characterized in that, includes hydraulic arm, percussion drill, sweeps device, dress appearance bottle, carousel, ink jet numbering machine and control system, wherein:

the front end of the percussion drill is provided with a clamping groove for mounting a material collecting cabin, a spring is arranged in the clamping groove, one end of the material collecting cabin is sealed and is connected with the spring in the clamping groove, and the spring can stretch along with the movement of the material collecting cabin so as to ensure that the material collecting cabin is always in close contact with the surrounding rock of the tunnel; the other end of the tunnel wall is provided with a collecting port, a drill bit of the impact drilling machine penetrates through the collecting port, and the impact drilling machine is responsible for crushing tunnel wall rock and collecting powder through a collecting cabin;

the middle part of the material collecting cabin is provided with a material collecting hopper for collecting rock powder cut by the percussion drill, and a detachable screen is arranged below the material collecting hopper and is responsible for screening the rock powder;

the code spraying machine is connected with a microcomputer of the TBM main control room, and can transmit the sampling mileage information to the code spraying machine and spray-print the sampling mileage information on the bottle body of the sample bottle;

2. The TBM-carrying rock powder sampling device of claim 1, further comprising a protection device, wherein the protection device comprises a base, a side wall and a ceiling, the side wall is arranged on the base, and the ceiling for preventing rock falling and water seepage is arranged at the top end of the side wall.

3. The TBM-carrying rock powder sampling device of claim 2, wherein the hydraulic arm is supported by a post fixed to the base of the guard.

4. The TBM-carrying rock powder sampling device of claim 2, wherein the base and ceiling are both made of stainless steel; the base is rectangular; the side wall is vertically welded above the base.

5. The TBM-carrying rock powder sampling device of claim 1, wherein there are two outlets below the screen, one is a powder outlet and one is a waste outlet, and there is a valve at each of the powder outlet and the waste outlet.

6. The TBM embarkation rock powder sampling device according to claim 4, wherein a rubber ring is arranged at the position of the collecting opening of the collecting cabin.

7. The TBM-carrying rock powder sampling device of claim 1, wherein the purge means includes a high pressure blower and a vent pipe; the high-pressure blower is fixedly arranged at the upper part of the percussion drill and provides a powerful air source for the blowing device; the ventilation pipe is provided with an air inlet and two air outlets, the inlet is connected with the high-pressure air blower port, and the two air outlets are respectively connected to two ends above the material collecting hopper of the material collecting cabin.

8. The working method of the TBM-mounted rock powder sampling device according to any one of claims 1 to 7, comprising the following steps:

starting a switch of the percussion drill, and simultaneously controlling a hydraulic arm to slowly push the percussion drill to enable the drill bit to continuously drill into the surrounding rock, wherein the rubber ring at the acquisition opening is tightly attached to the surrounding rock, and rock powder enters a collecting hopper from the acquisition opening;

when the powder amount in the sample bottle reaches a certain mass, the percussion drill stops working, controls the hydraulic arm to retract, and closes the powder discharge hole;

after the purging is completed, the high-pressure blower and the waste material discharge port valve are closed, and meanwhile, the screen after manual cleaning is installed, so that one cycle of rock powder sampling work is completed.