CN116537177B - Self-expanding early warning anchor rod - Google Patents
Self-expanding early warning anchor rod Download PDFInfo
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- CN116537177B CN116537177B CN202310236096.0A CN202310236096A CN116537177B CN 116537177 B CN116537177 B CN 116537177B CN 202310236096 A CN202310236096 A CN 202310236096A CN 116537177 B CN116537177 B CN 116537177B
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- water
- absorbing sponge
- rod
- expanding
- push rod
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 109
- 239000002689 soil Substances 0.000 claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims description 18
- 239000002250 absorbent Substances 0.000 claims description 15
- 230000002745 absorbent Effects 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 4
- 230000008093 supporting effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 8
- 238000004873 anchoring Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a self-expanding early-warning anchor rod, which comprises an anchor rod body, an early-warning device and a self-expanding device sleeved on the anchor rod body; the self-expanding device comprises a water-absorbing sponge, a water-absorbing sponge cavity, a shell, a main push rod, an auxiliary push rod, an outer expansion rod and a spring, wherein the water-absorbing sponge is arranged in the water-absorbing sponge cavity, one end of the main push rod is connected with the water-absorbing sponge, the other end of the main push rod is connected with the spring, the auxiliary push rod is hinged with the main push rod, and the outer expansion rod is hinged with the auxiliary push rod and the shell; the early warning device comprises a buzzer, an infrared spotlight and a photoresistor, wherein the photoresistor is arranged on one side, close to the anchor rod body, of the water-absorbing sponge cavity, the infrared spotlight is arranged in the water-absorbing sponge cavity, and the buzzer sounds when the water-absorbing sponge cavity is filled with the water-absorbing sponge; the anchor rod body is internally provided with a water storage bin which is connected with the water absorption sponge chamber. The invention can maintain the supporting effect when the water content increases rapidly, and can early warn when to pump water, and can automatically open the outer expanding rod in the soil according to the water content.
Description
Technical Field
The invention belongs to an anchoring device, and particularly relates to a self-expanding early-warning anchor rod.
Background
The anchor rod is generally driven into a hole with a preset depth and diameter by using an anchor drilling machine, then a rod column made of a specific material is driven into the hole, and surrounding rock and a stable rock body are combined together by utilizing the special structures of the head part and the rod body and the tail support plate to generate a suspension effect, a combined beam effect and a reinforcing effect so as to achieve the supporting effect. However, the conventional anchor rod cannot be suitable for the condition that the water content in the soil is rapidly increased, such as heavy rainfall can cause the water content in the soil of a side slope, a foundation pit and the like to be increased, the soil is rapidly soft, and the original anchor rod anchoring effect is greatly reduced. And because of the increase of the water content in the soil, the original anchor rod can be invalid, and the supporting effect can not be maintained any more.
The Chinese patent with the application number of 201720999045.3 discloses an anchor rod suitable for a soft soil foundation, when the anchor rod is driven into the soil, the soft soil foundation can be subjected to vacuum drainage and reinforcement, so that the water content in the soil is reduced, but the anchor rod cannot early warn when water is pumped, and only can be automatically noticed by constructors, so that the anchor rod is easy to fail.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention aims to provide the self-expanding early warning anchor rod which has good anchoring effect and can automatically expand the outer expanding rod according to the water content in the soil.
The technical scheme is as follows: the invention relates to a self-expanding early-warning anchor rod, which comprises an anchor rod body, an early-warning device and a self-expanding device sleeved on the anchor rod body; the self-expanding device comprises a water-absorbing sponge, a water-absorbing sponge cavity, a shell, a main push rod, an auxiliary push rod, an outer expanding rod and a spring, wherein the water-absorbing sponge is arranged in the water-absorbing sponge cavity, one end of the main push rod is connected with the water-absorbing sponge, the other end of the main push rod is connected with the spring, the auxiliary push rod is hinged with the main push rod, one end of the outer expanding rod is hinged with the auxiliary push rod, and the other end of the outer expanding rod is hinged with the shell through a hinge so as to facilitate the movement of the outer expanding rod when the outer expanding rod is opened; the early warning device comprises a buzzer, an infrared spotlight and a photoresistor, wherein the photoresistor is arranged on one side, close to the anchor rod body, of the water absorption sponge cavity, the infrared spotlight is arranged on one side, far away from the anchor rod body, of the water absorption sponge cavity, the infrared spotlight can irradiate the photoresistor, when the water absorption sponge cavity is filled with the water absorption sponge, the infrared spotlight cannot irradiate the photoresistor, and the buzzer sounds; the water storage bin is arranged in the anchor rod body and is connected with the water absorption sponge chamber through the gauze.
Further, the angular relationship between the volume change of the water absorbing sponge and the opening of the expanding rod is as follows:
wherein,θfor the opening angle of the external expansion rod,V x in order to obtain the volume of the water-absorbing sponge which expands after absorbing water,V 0 is the initial volume of the absorbent sponge.
Further, the early warning device also comprises a potentiometer, a PNP triode, a protection resistor and a circuit power supply; the base electrode of the PNP triode is connected with the protection resistor, the emitter electrode of the PNP triode is connected with the negative electrode of the circuit power supply, and the collector electrode of the PNP triode is connected with the buzzer; the buzzer and the photoresistor are connected with the positive electrode of the circuit power supply; the photoresistor is connected with the potentiometer and the protection resistor respectively; the potentiometer is connected with the negative electrode of the circuit power supply.
Further, a spring locking block is arranged in the shell, and a groove matched with the spring locking block is arranged on the main push rod.
Further, the outer expanding rod is provided with saw teeth for cutting soil bodies when the outer expanding rod is opened.
Further, the side of the water absorption sponge, which is far away from the main push rod, is provided with a filter layer, the filter layer is gauze or filter cloth, impurities in soil are filtered out, and only water is ensured to enter the self-expanding system to act with the water absorption sponge.
Further, the anchor body is connected with the outer anchorage device and the anchorage head respectively. The cement slurry injection channel is arranged in the anchor rod body, the slurry outlet hole is formed in the anchor head, and the cement slurry injection channel is communicated with the slurry outlet hole, so that cement slurry overflows through the anchor rod body through the slurry outlet hole of the anchor head and is solidified with surrounding soil, and the anchor rod achieves the anchoring effect. The buzzer is arranged in the outer anchorage device, so that the sound is weakened due to the fact that the buzzer is shielded by a soil body when the buzzer alarms, and the buzzer is difficult to be perceived by people. A water outlet channel is arranged in the outer anchor, and the water outlet channel is connected with the water storage bin. The anchor head is designed into a cone shape, so that the anchor rod can be conveniently penetrated into the soil to complete anchoring, the outer anchor is positioned at the tail part of the anchor rod, the outer anchor is generally exposed out of the soil, and constructors and the like can conveniently fix the whole anchor rod by using nuts, backing plates and the like.
Working principle: after drilling a borehole by a drilling machine, putting the borehole into the borehole by constructors and fixing the borehole, and completing the installation of the anchor rod after grouting is completed. Under the general condition, the anchor rod has no change, but when the water content in soil increases under the condition of heavy rainfall or other conditions, water gradually contacts with the water absorbing sponge in the anchor rod through the gauze and the filter cloth, the volume of the water absorbing sponge gradually expands under the action of the water, and the volume of the water absorbing sponge begins to increase within 3-5 minutes after absorbing water, so that a forward thrust is generated, so that a main push rod in contact with the water absorbing sponge is pushed, an auxiliary push rod is pushed to move upwards by the main push rod, the auxiliary push rod slowly expands in the soil in the process of upward movement, and the expanding angle of the auxiliary push rod is larger and larger along with the continuous increase of the volume of the water absorbing sponge. When the volume of the water absorbing sponge expands twice as large after meeting water, namely, the total volume of the water absorbing sponge is three times of the initial volume, the spring locking block just falls into the groove of the main push rod, namely, the whole expanding device is locked, and the expanding rod is opened. However, the water absorbing sponge is expanded continuously with the continuous increase of the water content in the soil, after the whole cavity is fully expanded, the infrared spotlight is blocked, so that the water absorbing sponge cannot irradiate on the photoresistor, the photoresistor resistance value is increased, the potentiometer voltage-dividing voltage drop is reduced, the voltage on the PNP triode is reduced, the circuit is switched on, the buzzer rings, and the early warning system is started. When the moisture in the soil continuously increases again, the water can permeate through the water absorbing sponge to enter the water storage bin inside the anchor rod, and constructors can extract the moisture through the water outlet channel reserved by the water pumping equipment connected with the anchor rod outside at the moment, so that safety is ensured.
The using method comprises the following steps: firstly, after a hole is drilled at a preset position by a drilling machine, placing the anchor rod body in the drilled hole, grouting the anchor rod body by a grouting opening, and fixing the outer anchorage device of the anchor rod by nuts, backing plates and the like after the grouting liquid is solidified, so that the self-expanding early warning installation of the whole anchor rod is completed.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable characteristics:
1. the support effect can be maintained when the water content increases rapidly, and the water can be pumped in advance, and the outer expanding rod can be automatically opened in the soil according to the water content;
2. the self-expansion of the anchor rod in the soil is completely realized by the water-swelling principle of the water-absorbing sponge, the action of external force is not needed, and the method is simple, convenient and sensitive in reaction;
3. the circuit device early warning system is added into the anchor rod, and the constructor can be timely reminded to take relevant measures through volume expansion triggering of the water absorption sponge, so that the occurrence of danger is reduced;
4. the anchor rod realizes double anchoring effect through grouting and the outer expanding rod, the anchoring effect is better, and when the water content in the soil continuously increases, the water in the water storage bin in the anchor rod is pumped out through the pumping equipment by a construction staff through the early warning system, so that the anchor rod has the function of draining.
Drawings
FIG. 1 is a schematic view of the self-expanding device 3 of the present invention in its retracted configuration;
FIG. 2 is a schematic view of the self-expanding device 3 according to the present invention when opened;
FIG. 3 is a top view of the self-expanding device 3 of the present invention;
fig. 4 is a schematic view of the construction of a leaflet 6 according to the invention;
FIG. 5 is a schematic view of the construction of the outer expansion lever 36 of the present invention;
FIG. 6 is a cross-sectional view of the water absorbing sponge 31 of the present invention;
fig. 7 is a circuit diagram of the warning device 2 of the present invention.
Detailed Description
As shown in fig. 1-2, the anchor body 1 of the self-expanding early warning anchor rod is respectively connected with an outer anchorage device 4 and an anchorage head 5. The anchor body 1 is hollow, a cement slurry injection channel 12 is arranged in the anchor body, a slurry outlet 51 is arranged at the anchor head 5, and the cement slurry injection channel 12 is communicated with the slurry outlet 51. When the anchor rod is installed, grouting is needed to be carried out on the anchor rod body 1, cement slurry overflows from the grout outlet holes 51 of the anchor heads 5 along the cement slurry injection channel 12, and solidification is completed together with soil. A water outlet channel 41 is arranged in the outer anchorage device 4, and the water outlet channel 41 is connected with the water storage bin 11.
The self-expanding device 3 is hollow and round tube-shaped and is provided with threads. During installation, the self-expanding device 3 is nested on the anchor rod body 1 through threads, so that the self-expanding device cannot loosen and fall off on the anchor rod. The self-expanding device 3 is divided into four parts of an upper part, a lower part, a left part and a right part, and a push rod device, an early warning device 2 and a locking device are respectively arranged at the upper side, the lower side, the left side and the right side. The push rod device mainly comprises a main push rod 34, four auxiliary push rods 35 and four outer expansion rods 36. The locking device mainly comprises a spring 37 and two spring locking blocks 38, and two grooves 341 which are arranged on the main push rod 34 and correspond to the spring locking blocks 38 in size. There are a total of one absorbent sponge 31, one absorbent sponge chamber 32, one housing 33, four primary push rods 34, 16 secondary push rods 35, 16 outer expansion rods 36, four springs 37, eight spring locking blocks 38. The water absorbing sponge 31 is arranged in the water absorbing sponge chamber 32. The overall volume of the absorbent sponge chamber 32 should be four times the volume of the absorbent sponge 31, i.e., the absorbent sponge 31 occupies 1/4 of the volume of the overall absorbent sponge chamber 32, and the remaining space occupies 3/4 of the volume of the overall absorbent sponge chamber 32. The water-absorbing sponge 31 is sensitive in reaction, and can expand within 3-5 minutes after absorbing water, namely the water-absorbing sponge 31 can enable the self-expanding device 3 to start within 3-5 minutes after absorbing water. The water-absorbent sponge 31 used is a water-absorbent resin such as polyvinyl alcohol. Meanwhile, the water absorbing sponge 31 installed in the water absorbing sponge chamber 32 should be manufactured in a circular ring shape, and the specific size may depend on the specific engineering practice.
The early warning device 2 comprises a buzzer 21, an infrared spotlight 22 and a photoresistor 23, wherein the photoresistor 23 is arranged on one side, close to the anchor rod body 1, in the water-absorbing sponge cavity 32, the infrared spotlight 22 is arranged on one side, far away from the anchor rod body 1, in the water-absorbing sponge cavity 32, the infrared spotlight 22 can irradiate onto the photoresistor 23, and when the water-absorbing sponge cavity 32 is filled with the water-absorbing sponge 31, the infrared spotlight 22 cannot irradiate onto the photoresistor 23, and the buzzer 21 rings. The warning device 2 includes a total of 4 buzzers 21,4 infrared lamps 22 and 4 photoresistors 23.
As shown in fig. 3 to 4, the left end of the main push rod 34 is connected with the water absorbing sponge 31, and the right end is fixedly connected with the spring 37. The auxiliary push rod 35 is hinged with the main push rod 34, one end of the outer expanding rod 36 is hinged with the auxiliary push rod 35, and the other end of the outer expanding rod is hinged with the shell 33 through the hinge 6, so that the outer expanding rod can move when being opened. The filter layer 39 is arranged at the initial position of the water absorbing sponge 31, namely at the leftmost position of the water absorbing sponge chamber 32 and at the position which occupies 1/4 of the volume of the water absorbing sponge chamber 32 and contacts with soil body, and is a circle of gauze and filter cloth, so that impurities in the soil are filtered, and only water is ensured to enter the self-expanding device 3 to act with the water absorbing sponge 31. The outermost side of the remaining absorbent sponge chamber 32 is a closed steel shell. As shown in FIG. 5, the outer side of the outer reamer 36 is provided with serrations 361 to facilitate cutting of the soil as it spreads out in the soil.
As shown in fig. 6, a water storage bin 11 is arranged in the anchor rod body 1, and the water storage bin 11 is contacted with a water absorbing sponge cavity 32 through a layer of gauze.
The angular relationship between the volume change of the absorbent sponge 31 and the opening of the outer expansion rod 36 should be:
（1）
wherein,θfor the expansion rod 36 to open at an angle,V x to the volume of the absorbent sponge 31 that expands after absorbing water,V 0 is the initial volume of the absorbent sponge 31.
Assuming that the bottom area of the water-absorbing sponge chamber 32 is S, the length of each section of the water-absorbing sponge chamber 32 is X, and the initial mass of the water-absorbing sponge 31 ism 0 ，V 1 Time water content，V 2 Moisture content at time->，V 3 Time water content. And V is 1 =2V 0 ，V 2 =3V 0 ，V 3 =4V 0 . The water content in the soil is doubled when the water content is brought into the anchor rod (1), namely the maximum opening angle of the outer expanding rod of the anchor rod is 60 degrees, and the opening angle of the outer expanding rod is enlarged by 20 degrees.
As shown in fig. 7, the early warning device 2 further includes a potentiometer 24, a PNP transistor 25, a protection resistor 26, and a circuit power supply 27. The base of PNP triode 25 links to each other with protection resistor 26, and PNP triode 25's projecting pole links to each other with the negative pole of circuit power 27, and PNP triode 25's collecting electrode links to each other with buzzer 21. The buzzer 21 and the photoresistor 23 are connected with the positive electrode of the circuit power supply 27. The photoresistor 23 is connected with a potentiometer 24 and a protection resistor 26 respectively. The potentiometer 24 is connected to the negative pole of the circuit power supply 27. Four buzzers 21 are arranged in the outer anchorage device 4, so that the sound is prevented from weakening due to the shielding of soil body during alarming, and the buzzers are difficult to be perceived by people.
After drilling a hole by a drilling machine, placing the self-expanding early-warning anchor rod into the hole by a constructor and fixing the self-expanding early-warning anchor rod, and completing the installation of the anchor rod after grouting is completed. The anchor rod is unchanged in general. However, when heavy rainfall or other conditions are encountered, the water gradually contacts the water absorbing sponge 31 in the anchor rod through the filter layer 39, and the volume of the water absorbing sponge 31 gradually expands under the action of the water, so that the main push rod 34 contacted with the water absorbing sponge is pushed, the main push rod 34 pushes the auxiliary push rod 35 to move upwards, and the auxiliary push rod 35 pushes the expanding rod 36 to slowly expand in the soil in the upward movement process. One side of the expanding rod 36 is fixed on the shell 33 through a hinge 6, so that the expanding rod can be opened and closed freely. With the increasing volume of the water absorbing sponge 31, the opening angle of the outer expansion rod 36 is larger and larger, when the volume of the water absorbing sponge 31 expands twice as large after meeting water, namely, the total volume of the water absorbing sponge 31 is three times of the initial volume, the spring locking block 38 just falls into the groove 341 of the main push rod 34, namely, the whole self-expansion device 3 is locked, and the outer expansion rod 36 is opened completely. However, as the water content in the soil increases, the water absorbing sponge 31 expands continuously, after the whole water absorbing sponge chamber 32 is fully expanded, the infrared spotlight 22 is blocked, so that the infrared spotlight cannot irradiate on the photoresistor 23, the resistance value of the photoresistor 23 becomes large, the voltage dividing drop of the potentiometer 24 becomes small, the voltage on the PNP triode 25 becomes small, the circuit is switched on, the buzzer 21 sounds, and the early warning device 2 is started. When the moisture in the soil continuously increases again, water can permeate through the water absorbing sponge 31 to enter the water storage bin 11 inside the anchor rod, and at the moment, constructors can draw out the moisture through the water outlet channel 41 reserved by the water pumping equipment connected with the anchor rod, so that safety is ensured, and the anchor rod has three functions of self-expanding, early warning and water draining.
The self-expanding early warning anchor rod using method of the embodiment is as follows: after a hole is drilled at a preset position by a drilling machine, placing the anchor rod body 1 in the drilled hole, and grouting the anchor rod body 1 by a cement slurry injection channel 12; after the slurry is solidified, the outer anchorage device 4 is fixed by nuts, backing plates and the like, and the installation of the whole self-expanding early warning anchor rod is completed.
Claims (3)
1. The utility model provides a self-expanding early warning stock which characterized in that: comprises an anchor rod body (1), an early warning device (2) and a self-expanding device (3) sleeved on the anchor rod body (1); the self-expanding device (3) comprises a water absorbing sponge (31), a water absorbing sponge chamber (32), a shell (33), a main push rod (34), an auxiliary push rod (35), an outer expansion rod (36) and a spring (37), wherein the water absorbing sponge (31) is arranged in the water absorbing sponge chamber (32), one end of the main push rod (34) is connected with the water absorbing sponge (31), the other end of the main push rod is connected with the spring (37), the auxiliary push rod (35) is hinged with the main push rod (34), one end of the outer expansion rod (36) is hinged with the auxiliary push rod (35), and the other end of the outer expansion rod is hinged with the shell (33); the early warning device (2) comprises a buzzer (21), an infrared spotlight (22) and a photoresistor (23), wherein the photoresistor (23) is arranged on one side, close to the anchor rod body (1), in the water-absorbing sponge cavity (32), the infrared spotlight (22) is arranged on one side, far away from the anchor rod body (1), in the water-absorbing sponge cavity (32), the infrared spotlight (22) can irradiate the photoresistor (23), and when the water-absorbing sponge cavity (32) is filled with the water-absorbing sponge (31), the infrared spotlight (22) cannot irradiate the photoresistor (23), and the buzzer (21) responds; a water storage bin (11) is arranged in the anchor rod body (1), and the water storage bin (11) is connected with a water absorption sponge chamber (32);
the early warning device (2) further comprises a potentiometer (24), a PNP triode (25), a protection resistor (26) and a circuit power supply (27); the base electrode of the PNP triode (25) is connected with a protection resistor (26), the emitter electrode of the PNP triode (25) is connected with the negative electrode of a circuit power supply (27), and the collector electrode of the PNP triode (25) is connected with a buzzer (21); the buzzer (21) and the photoresistor (23) are connected with the positive electrode of the circuit power supply (27); the photoresistor (23) is respectively connected with the potentiometer (24) and the protection resistor (26); the potentiometer (24) is connected with the negative electrode of the circuit power supply (27);
a spring locking block (38) is arranged in the shell (33), and a groove (341) matched with the spring locking block (38) is formed in the main push rod (34);
a filter layer (39) is arranged on one side of the water absorbing sponge (31) far away from the main push rod (34), and the filter layer (39) is gauze or filter cloth;
the anchor rod body (1) is respectively connected with the outer anchor (4) and the anchor head (5); a cement slurry injection channel (12) is arranged in the anchor rod body (1), a slurry outlet hole (51) is formed in the anchor head (5), and the cement slurry injection channel (12) is communicated with the slurry outlet hole (51); the buzzer (21) is arranged in the outer anchorage device (4); a water outlet channel (41) is arranged in the outer anchorage device (4), and the water outlet channel (41) is connected with the water storage bin (11).
2. A self-expanding warning bolt according to claim 1, wherein: the angular relationship between the volume change of the water absorbing sponge (31) and the opening of the expanding rod (36) is as follows:
，
wherein,θfor the opening angle of the expanding rod (36),V x is the volume of the water absorbing sponge (31) which expands after absorbing water,V 0 is the initial volume of the absorbent sponge (31).
3. A self-expanding warning bolt according to claim 1, wherein: the outer expanding rod (36) is provided with saw teeth (361) for cutting soil bodies when the outer expanding rod is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310236096.0A CN116537177B (en) | 2023-03-13 | 2023-03-13 | Self-expanding early warning anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310236096.0A CN116537177B (en) | 2023-03-13 | 2023-03-13 | Self-expanding early warning anchor rod |
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| Publication Number | Publication Date |
|---|---|
| CN116537177A CN116537177A (en) | 2023-08-04 |
| CN116537177B true CN116537177B (en) | 2024-02-27 |
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| CN202310236096.0A Active CN116537177B (en) | 2023-03-13 | 2023-03-13 | Self-expanding early warning anchor rod |
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2023
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| KR20090010183U (en) * | 2008-04-03 | 2009-10-07 | 임용관 | Perforating drill of earth anchor operative without draining water and soil |
| CN205422768U (en) * | 2016-03-10 | 2016-08-03 | 山东科技大学 | From advancing formula crevice water early warning stock |
| CN107620603A (en) * | 2017-09-26 | 2018-01-23 | 中国矿业大学 | A kind of novel slurry filling anchor pole with steel loop bar |
| CN113217053A (en) * | 2021-05-14 | 2021-08-06 | 江苏科技大学 | Self-adaptive large-deformation prestressed anchor rod |
| CN114277792A (en) * | 2022-01-06 | 2022-04-05 | 江苏科技大学 | Self-expanding anchor rod capable of monitoring resistivity of soil body and construction method thereof |
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| Publication number | Publication date |
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| CN116537177A (en) | 2023-08-04 |
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