CN217060211U - Rock mass crack detection device - Google Patents
Rock mass crack detection device Download PDFInfo
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- CN217060211U CN217060211U CN202220028999.0U CN202220028999U CN217060211U CN 217060211 U CN217060211 U CN 217060211U CN 202220028999 U CN202220028999 U CN 202220028999U CN 217060211 U CN217060211 U CN 217060211U
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Abstract
The utility model discloses a rock mass crack detection device, include: the first pipeline is arranged in a first drilled hole formed in the rock body, first safety gas is input into an inlet of the first pipeline, a spray head is arranged at an outlet of the first pipeline, and the first safety gas is sprayed to the rock body through the spray head; the first safety gas is diffused to the second drilling hole through a crack in the rock body and is detected by the detection probe; and the upper computer is used for receiving and displaying the detection result of the first safety gas sent by the detection probe. Above scheme has provided a gas that adoption can guarantee engineering environmental security in the process of the inside hole seepage flow of rock mass to can obtain the inside porosity of rock mass and the inside crack of rock mass condition of developing and the rock mass damage condition, this scheme has flexibility height, easy operation, the advantage that the precision is high.
Description
Technical Field
The utility model relates to a geotechnical engineering technical field, in particular to a crack detection device for rock mass is inside.
Background
In the hard rock mass, fracture structural planes are distributed in the generation and evolution process of the hard rock mass, so that the strength of the rock mass is reduced, namely, the weakening effect. For underground rock engineering, taking coal mine safety production as an example, a pressure relief blasting engineering before mining is carried out on a rock burst mine, and how the development condition of a crack after deep hole blasting is finished directly influences the stability of an underground roadway and the pressure relief effect judgment. Whether the pressure relief engineering is in place or not is judged according to the pressure relief effect of the rock mass, and whether the stability of the roadway is influenced by blasting or not is judged according to the development condition of the cracks. Therefore, the detection of the development condition of the internal fracture of the rock mass after artificial disturbance has important significance for engineering design and safety stability evaluation.
Based on this, a device capable of accurately predicting the development condition of the internal fracture of the rock mass and the damage condition of the rock mass is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a rock mass crack detection device to carry out the accuracy to the crack of rock mass inside and detect.
To the technical problem, the utility model provides a following technical scheme:
an embodiment of the utility model provides a rock mass crack detection device, include:
the first pipeline is arranged in a first drilled hole formed in the rock body, first safety gas is input into an inlet of the first pipeline, a spray head is arranged at an outlet of the first pipeline, and the first safety gas is sprayed to the rock body through the spray head;
the second pipeline is arranged in a second drilling hole formed in the rock body, at least one detection probe is arranged on the second pipeline, and the first safety gas is diffused to the second drilling hole through a crack in the rock body and is detected by the detection probe;
and the upper computer is used for receiving and displaying the detection result of the first safety gas sent by the detection probe.
The rock mass fracture detection device in some embodiments further comprises:
and the pressure gauge is arranged at the inlet of the first pipeline and used for monitoring the pressure value of the first safety gas input into the first pipeline.
The rock mass fracture detection device in some embodiments further comprises:
the electric control valve is arranged at the inlet of the first pipeline;
and the upper computer receives the pressure value sent by the pressure gauge and adjusts the opening and closing of the electric control valve according to the pressure value.
The rock mass fracture detection device in some embodiments further comprises:
the first rubber body is arranged in the first pipeline and positioned at the front end of the spray head, and the front end refers to the side farther away from the outlet of the first pipeline;
the first rubber body expands when passing through the first safety gas for the first time, and the outer wall of the expanded first rubber body abuts against the inner wall of the first drilling hole.
In some embodiments, the rock mass fracture detection device includes a plurality of detection probes in the second pipeline, each detection probe is configured with a unique number, and two adjacent detection probes are spaced apart by a set distance.
The rock mass fracture detection device in some embodiments further comprises:
each second rubber body is arranged between two adjacent detection probes;
and a second safety gas is input into an inlet of the second pipeline, and when the second safety gas flows through the second rubber body for the first time, the expanded second rubber body is expanded, and the outer wall of the expanded second rubber body is abutted against the inner wall of the second drilling hole.
The rock mass fracture detection device in some embodiments further comprises:
and the gas generating device is used for generating and outputting nitrogen, and the nitrogen output by the gas generating device is used as the first safety gas.
In some embodiments, the rock mass fracture detection device is provided with a communication unit, and the detection probe is in communication connection with the upper computer through the communication unit.
The rock mass fracture detection device in some embodiments further comprises:
the transmission cable is arranged inside the second pipe body, and the detection probe is connected with the transmission cable; and the transmission cable receives the detection data sent by the detection probe and then forwards the detection data to the upper computer.
The rock mass fracture detection device in some embodiments further comprises:
the control cable is arranged in the first pipe body, and the control end of the spray head is connected with the control cable; and the upper computer sends a control signal to the spray head through the control cable so as to control the spray head to be opened or closed.
The technical scheme of the utility model prior art relatively has following technological effect:
the utility model provides a rock mass crack detection device, set up first drilling and second drilling inside the rock mass, set up first pipeline in first drilling, set up the second pipeline in the second drilling, safe gas exports to the rock mass in through first pipeline, if there is the crack between the inherent first drilling of rock mass and second drilling, then safe gas can spread to the second drilling along the crack, thereby the test probe in the second pipeline in the second drilling is arranged in detects, the host computer receives test probe's testing result after, just can determine whether there is the crack between first drilling and the second drilling, thereby accomplish the crack and detect. The utility model discloses an above scheme has provided a gas that adoption can guarantee engineering environmental security is in the process of the inside hole seepage flow of rock mass to can obtain the inside porosity of rock mass and the inside crack condition of developing of rock mass and the rock mass damage condition, this scheme has flexibility height, easy operation, the high advantage of precision.
Drawings
The objects and advantages of the present invention will be understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic view of the internal structure of a rock mass according to an embodiment of the present invention;
fig. 2 is a schematic view of the arrangement relationship of the rock mass fracture detection device in the rock mass according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a rock mass fracture detection device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a rock mass fracture detection device according to another embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The embodiment provides a rock mass fracture detection device, as shown in fig. 1, in the coal mining process, a tunnel is excavated inside a rock mass 200, a fracture 201 may exist inside the rock mass 200, in order to detect the fracture 201, a hole may be drilled towards the inside of the rock mass along a direction perpendicular to the tunnel, a distance between two drill holes is determined according to an interval in which the fracture needs to be detected, as shown in fig. 1, a distance between a first drill hole 101 and a second drill hole 102 is l, and l is selected according to a specific scenario, for example, 100 meters, 150 meters, and the like may be selected. As shown in fig. 2-4, the rock body crack detection device comprises a first pipeline, which is arranged in a first borehole 101 formed in the rock body, wherein a first safety gas is input into an inlet of the first pipeline, a spray head 105 is arranged at an outlet of the first pipeline, and the first safety gas is sprayed to the rock body 200 through the spray head 105; the second pipeline is arranged in a second drilling hole 102 formed in the rock body, at least one detection probe 107 is arranged on the second pipeline, and the first safety gas is diffused to the second drilling hole 102 through a crack 201 in the rock body and is detected by the detection probe 107; and the upper computer 300 is used for receiving and displaying the detection result of the first safety gas sent by the detection probe 107.
Specifically, the first safety gas may be an explosion-proof gas, a gas with high stability, or the like commonly used in the underground coal mine, such as nitrogen. After passing through the first pipeline, nitrogen is injected into the rock mass through the nozzle 105, if a crack 201 exists in the rock mass, the nitrogen can seep from the crack 201 to the second borehole 102, and the detection probe 107 in the second borehole 102 can detect the nitrogen. It will be appreciated that during coal mining, the general direction of development of the fractures may be determined, i.e. nitrogen will be able to seep through as long as there is a fracture between the first bore 101 and the second bore 102.
The method comprises the steps that a first drilling hole 101 and a second drilling hole 102 are formed in a rock body 200, a first pipeline is arranged in the first drilling hole 101, a second pipeline is arranged in the second drilling hole 102, first safety gas is output into the rock body through the first pipeline, if a crack 201 exists between the first drilling hole 101 and the second drilling hole 102 in the rock body, the first safety gas can be diffused to the second drilling hole 102 along the crack 201, so that a detection probe 107 arranged in the second pipeline in the second drilling hole 102 detects the crack, and after an upper computer 300 receives a detection result of the detection probe 107, whether the crack exists between the first drilling hole 101 and the second drilling hole 102 or not can be determined, and crack detection is completed. Above scheme has provided a gas that adoption can guarantee engineering environmental security in the process of the inside hole seepage flow of rock mass to can obtain the inside porosity of rock mass and the inside crack of rock mass condition of developing and the rock mass damage condition, this scheme has flexibility height, easy operation, the advantage that the precision is high.
Preferably, the rock mass fracture detection device in the above scheme may further include a pressure gauge 108, where the pressure gauge 108 is disposed at an inlet of the first pipeline, and monitors a pressure value of the first safety gas input to the first pipeline, after test verification, when the pressure value of the first safety gas input to the first pipeline is greater than 1Mpa, the nozzle 105 may uniformly diffuse the first safety gas sprayed at a constant pressure to the inner periphery of the hole, and when there is a fracture in the rock mass, the gas may seep to the second borehole 102 along the fracture, and is accurately detected by the detection probe 107.
In some embodiments, the rock mass fracture detection device further includes an electronic control valve 110 disposed at an inlet of the first pipeline; the upper computer 300 receives the pressure value sent by the pressure gauge 108, and adjusts the opening and closing of the electric control valve 110 according to the pressure value, for example, when the pressure value detected by the pressure gauge 108 is less than 1Mpa, the crack detection requirement may not be met at this time, the upper computer 300 can temporarily control the electric control valve 110 to be closed, and when the pressure value is greater than 1Mpa, the upper computer 300 controls the electric control valve 110 to be opened again.
Further preferably, as shown in fig. 3 and 4, the rock mass fracture detection device further includes a first rubber body 104 disposed in the first pipeline and located at a front end of the nozzle 105, where the front end is farther from an outlet of the first pipeline. The first rubber body 104 is expanded when first safety gas passes through the first rubber body, and the outer wall of the expanded first rubber body 104 abuts against the inner wall of the first bore hole 101. Therefore, the reverse flow of the gas in the first drilling hole 101 can be avoided, and the first safety gas sprayed out by the spray head 105 can enter the rock mass as much as possible.
In some embodiments, the rock body fracture detection device includes a plurality of detection probes 107 in the second pipeline, each detection probe 107 is configured with a unique number, and two adjacent detection probes 107 are spaced apart by a set distance, which may be 1 meter, 1.5 meters, or the like. Meanwhile, the above device may further include a plurality of second rubber bodies 106, and each second rubber body 106 is disposed between two adjacent detection probes 107; in addition, along the depth direction of the second bore hole 102, the front end of the first detection probe 107 is also provided with a second rubber body 106, a second safety gas is input into an inlet of the second pipeline, when the second safety gas flows through the second rubber body 106 for the first time, the outer wall of the second rubber body 106 expanded and expanded by the second rubber body 106 is abutted against the inner wall of the second bore hole 102, and the two adjacent detection probes 107 are isolated by the second rubber body 106, so that the interference of the gas flow in the second bore hole 102 to the detection result can be shielded. In this embodiment, the second safety gas input into the second pipeline may be selected from different types of gas from the first safety gas, and the purpose of the second safety gas is to expand the second rubber body 106, so that the second safety gas can meet the safety requirements of the underground coal mine.
The upper computer 300 can display the result detected by each detection probe 107, because the number of each detection probe 107 is known, and the depth of each detection probe 107 in the second borehole is known, a relationship between each detection probe 107 and a detection position can be established, when each detection probe 107 detects the concentration of the first safety gas, it can be determined which detection probe at the position has the seepage of the first safety gas, so that the specific direction of the fracture can be determined, an operation model can be preset in the upper computer, the development degree of the fracture between the first borehole and the second borehole can be determined by different time points of nitrogen detection of different detection probes 107, and the operation model can be obtained in advance in a manner of performing a calibration test on a rock body model in a laboratory. In some application scenarios, for example:
the depth of the spray head 105 in the first drill hole 101 is 50 meters, 5 detection probes 107 are respectively arranged in the second drill hole 102, the distance between different detection probes 107 is 5 meters, and the depths of the 5 detection probes in the second drill hole are respectively as follows: 30 meters, 35 meters, 40 meters, 45 meters and 50 meters. If the detection probes at 35 m and 45 m detect the first safety gas and the other detection probes do not detect the first safety gas, the fact that cracks exist at the positions corresponding to 35 m and 45 m of the second drilling hole is indicated.
In the above solution, the rock body fracture detection apparatus may further include a gas generation device 103 configured to generate and output nitrogen gas, and the nitrogen gas output by the gas generation device 103 is used as the first safety gas. The gas generating device 103 in this scheme may be disposed in the roadway.
In some aspects, the detection probe 107 in the rock fracture detection device is provided with a communication unit, and the detection probe 107 is in communication connection with the upper computer 300 through the communication unit. The communication unit can be realized by selecting modes such as a local area network, near field communication, Bluetooth and the like, and the wireless communication connection can simplify the arrangement of cables. In some aspects, the above rock fracture detection apparatus further comprises a transmission cable 109 disposed inside the second tubular body, the detection probe 107 is connected to the transmission cable 109; the transmission cable 109 receives the detection data sent by the detection probe 107 and then forwards the detection data to the upper computer 300, data transmission is achieved through the cable, and stability of data transmission can be guaranteed.
Further, the above rock mass fracture detection device may further include a control cable 111 disposed inside the first pipe body, wherein a control end of the spray head 105 is connected to the control cable 111; the upper computer 300 sends a control signal to the spray head 105 through the control cable 111 to control the spray head 105 to be opened or closed. Meanwhile, the controlled end of the electric control valve 110 may also be connected to the control cable 111, and the upper computer 300 transmits the control signal to the corresponding controlled component through the cable. Preferably, the pressure gauge 108 may also be connected to the control cable 111, so as to transmit the detection data to the upper computer 300 by wire. It is understood that the above transmission cable 109 and the control cable 111 can be implemented by selecting a conventional communication bus, and specifically, the upper computer 300 determines a data communication protocol according to the type of the selected communication bus, so as to enable transmission of communication data with each connected component, so as to enable reception of data and control of each component.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the present invention.
Claims (10)
1. A rock mass crack detection device which characterized in that includes:
the first pipeline is arranged in a first drilled hole formed in the rock body, first safety gas is input into an inlet of the first pipeline, a spray head is arranged at an outlet of the first pipeline, and the first safety gas is sprayed to the rock body through the spray head;
the second pipeline is arranged in a second drilling hole formed in the rock body, at least one detection probe is arranged on the second pipeline, and the first safety gas is diffused to the second drilling hole through a crack in the rock body and is detected by the detection probe;
and the upper computer is used for receiving and displaying the detection result of the first safety gas sent by the detection probe.
2. The rock mass fracture detection device of claim 1, further comprising:
and the pressure gauge is arranged at the inlet of the first pipeline and used for monitoring the pressure value of the first safety gas input into the first pipeline.
3. The rock mass fracture detection device of claim 2, further comprising:
the electric control valve is arranged at the inlet of the first pipeline;
and the upper computer receives the pressure value sent by the pressure gauge and adjusts the opening and closing of the electric control valve according to the pressure value.
4. The rock mass fracture detection device of claim 1, further comprising:
the first rubber body is arranged in the first pipeline and positioned at the front end of the spray head, and the front end refers to the side farther away from the outlet of the first pipeline;
the first rubber body expands when passing through the first safety gas for the first time, and the outer wall of the expanded first rubber body abuts against the inner wall of the first drilling hole.
5. The rock mass fracture detection device of claim 4, characterized in that:
the detecting probes in the second pipeline comprise a plurality of detecting probes, each detecting probe is provided with a unique serial number, and the distance between every two adjacent detecting probes is set.
6. The rock mass fracture detection device of claim 5, further comprising:
each second rubber body is arranged between two adjacent detection probes;
and a second safety gas is input into an inlet of the second pipeline, and when the second safety gas flows through the second rubber body for the first time, the second rubber body expands, and the outer wall of the expanded second rubber body is abutted against the inner wall of the second drill hole.
7. A rock mass fracture detection apparatus according to any one of claims 1 to 6, further comprising:
and the gas generating device is used for generating and outputting nitrogen, and the nitrogen output by the gas generating device is used as the first safety gas.
8. The rock mass fracture detection device of claim 7, characterized in that:
the detection probe is provided with a communication unit, and the detection probe is in communication connection with the upper computer through the communication unit.
9. The rock mass fracture detection device of claim 7, further comprising:
the transmission cable is arranged in the second pipeline, and the detection probe is connected with the transmission cable; and the transmission cable receives the detection data sent by the detection probe and then forwards the detection data to the upper computer.
10. The rock mass fracture detection device of claim 9, further comprising:
the control cable is arranged in the first pipeline, and the control end of the spray head is connected with the control cable; and the upper computer sends a control signal to the spray head through the control cable so as to control the spray head to be opened or closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220028999.0U CN217060211U (en) | 2022-01-05 | 2022-01-05 | Rock mass crack detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220028999.0U CN217060211U (en) | 2022-01-05 | 2022-01-05 | Rock mass crack detection device |
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| CN217060211U true CN217060211U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220028999.0U Active CN217060211U (en) | 2022-01-05 | 2022-01-05 | Rock mass crack detection device |
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| CN (1) | CN217060211U (en) |
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