CN111980021A - Anchor rod capable of automatically collecting, exhausting and ventilating and construction method - Google Patents
Anchor rod capable of automatically collecting, exhausting and ventilating and construction method Download PDFInfo
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- CN111980021A CN111980021A CN202010847060.2A CN202010847060A CN111980021A CN 111980021 A CN111980021 A CN 111980021A CN 202010847060 A CN202010847060 A CN 202010847060A CN 111980021 A CN111980021 A CN 111980021A
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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Abstract
An anchor rod capable of automatically collecting, exhausting and ventilating and a construction method are suitable for supporting frozen soil slopes. The automatic wind-catching ventilation anchor rod structure comprises an anchor pipe, a ventilation pipe, a wind-collecting system and an anchor device, wherein the anchor pipe is divided into a free section and an anchoring section by taking a baffle as a boundary, the ventilation pipe is sleeved outside the free section, the wind-collecting system comprises an air inlet pipe, an air outlet pipe, an unpowered hood, a wind direction plate and a transition connecting piece, grouting is performed on the anchoring section of the anchor pipe to enable the anchoring section to be bonded with the surrounding soil body, the ventilation pipe is sleeved outside the anchor pipe, the anchor pipe and the ventilation pipe are anchored on the slope surface through the anchor device to enable the anchor pipe and the ventilation pipe to be exposed out of the slope surface, and a first bent pipe C and a second bent pipe D in the wind-collecting system are respectively. The invention provides a frozen soil slope anchoring structure which can automatically collect wind at an air inlet and naturally draw wind at an air outlet by combining a natural ventilation principle and an anchoring principle, and utilizes natural wind energy to the maximum extent so as to accelerate the reduction of the temperature of a slope body.
Description
Technical Field
The invention relates to an anchor rod construction technology in the field of slope support, which is suitable for engineering reinforcement of frozen soil slopes in cold regions.
Background
Frozen earth is rock and soil with temperature below 0 deg.C or below 0 deg.C and containing ice. China is the third frozen country in the world with frozen soil area second to Russia and Canada, and the frozen soil area accounts for about 75% of the total area of the national soil and is mainly distributed in northwest and northeast regions. With the implementation of the western major development strategy and the gradual shift of the center of gravity of the economic construction strategy to the western and western parts in China, the construction of the infrastructure of permafrost regions is continuously developed, a large amount of slope engineering in cold regions is already generated, and the stability of the slopes in the cold regions becomes an important research subject.
Under the influence of global warming, more and more frozen soil slopes are subjected to freeze-thaw collapse, and at present, the main measures for preventing the frozen soil freeze-thaw collapse comprise that the harm caused by soil body frost heaving and thawing sinking is reduced by reducing the underground water level and the water content of a slope body; the anti-skid capacity of the slope body is enhanced by using engineering structures or ecological protection measures; non-frost heaving coarse aggregate is used for replacing frost heaving soil to ensure the stability of the slope body, but the measures are passive treatment technologies, the problem of hot-melt slumping of the frozen soil side slope cannot be fundamentally solved, and from the perspective of protecting the frozen soil, active cooling becomes the mainstream protection concept of the frozen soil side slope at present. The patent with the application number of 201610044592.6 provides an accelerated convection ventilation cooling anchor pipe and a construction method, the invention comprehensively utilizes a chimney effect principle, a freezing technology, a shape memory polymer and an anchoring technology, and frozen soil can be actively protected and anchored; the patent with the application number of 201710143649.2 is improved on the basis of the above patent, and a power-free accelerated convection anchor rod and a construction method are provided, wherein the flow speed of hot gas in a ventilation anchor pipe can be increased through a power-free accelerator, so that the convection heat exchange of the ventilation anchor pipe is accelerated; the two inventions have the defects that the two inventions can only accelerate gas exchange at the air outlet pipe, and have the problems of limited utilization of natural wind energy, insufficient obvious ventilation and cooling effects and incapability of actively selecting a natural wind direction, so that a ventilation anchor rod capable of utilizing the natural wind energy to the maximum extent is urgently needed.
Disclosure of Invention
The invention aims to provide an anchor rod capable of automatically collecting, exhausting and ventilating and a construction method.
The invention relates to an automatic air collection and exhaust ventilation anchor rod and a construction method, the automatic air collection and exhaust ventilation anchor rod comprises an anchor pipe 1, a ventilation pipe 2, an air collection system 3 and an anchorage device, wherein the anchor pipe 1 consists of a baffle ring 4, a grout outlet hole 5, a ventilation section A and an anchoring section B, the baffle ring 4 is a circular steel plate which has the same inner diameter as that of the anchor pipe 1 and is positioned at the boundary of a side slope slip surface, the anchor pipe 1 is a circular straight pipe, the anchor pipe 1 is divided into the ventilation section A and the anchoring section B by taking the baffle ring 4 as a boundary, and the grout outlet hole 5 is uniformly formed in the side surface of the anchoring section B; the vent pipe 2 is a circular straight pipe with the diameter equal to the outer diameter of the baffle ring 4; the air collecting system 3 comprises an air inlet pipe 6, an air outlet pipe 7, an unpowered hood 8, a wind direction plate 9 and a transition connecting piece, wherein the air inlet pipe 6 is an L-shaped bent pipe with the long side in a horn shape and the short side with the same diameter as the ventilation pipe 2, the air outlet pipe 7 is a straight pipe with the same diameter as the anchor pipe 1, a hole with the same diameter as the air outlet pipe 7 is reserved at the right angle of the air inlet pipe 6 along the central axis of the short side, a port of the short side of the air inlet pipe 6 is provided with convex teeth along the outer wall, one end of the air outlet pipe 7 is provided with convex teeth along the outer wall, the other end of the air outlet pipe is connected with the unpowered hood 8, the wind direction plate 9 is a right angle triangular plate welded on the upper edge of the outer side of the long side of the air inlet pipe 6, the long right angle edge of the wind direction plate 9 is axially flush with the long side of the air inlet pipe 6, the air outlet pipe 7 is embedded into the hole reserved at the right angle of the air, the first bent pipe C and the second bent pipe D are both provided with tooth grooves along the radial direction of the inner pipe wall at the inner side of the port at one end, one end of the air inlet pipe 6 with convex teeth is clamped on the tooth grooves of the first bent pipe C, and one end of the air outlet pipe 7 with convex teeth is clamped on the tooth grooves of the second bent pipe D; grouting is carried out on the anchoring section B of the anchor pipe 1, so that the anchoring section B is bonded with the surrounding soil body, the ventilation pipe 2 is sleeved outside the anchor pipe 1, the anchor pipe 1 and the ventilation pipe 2 are anchored on the surface of the side slope through an anchorage device, the anchor pipe 1 and the ventilation pipe 2 are exposed out of the surface of the side slope, and the first bent pipe C and the second bent pipe D in the air collecting system 3 are connected with the exposed ventilation pipe 2 and the exposed anchor pipe 1 through clamping hoops respectively, so that the automatic air collecting and exhausting ventilation anchor rod is formed.
The construction method of the anchor rod capable of automatically collecting, exhausting and ventilating comprises the following steps:
step (1), anchor pipe 1 is manufactured: determining the lengths of a ventilation section A and an anchoring section B in an anchor pipe 1 according to actual engineering, welding a baffle ring 4 at the junction of the ventilation section A and the anchoring section B, uniformly forming grout outlet holes 5 in the anchoring section B, and arranging convex teeth on the outer side of one end of the ventilation section A;
step (2) manufacturing a ventilation pipe 2: the diameter and the length of the ventilation pipe 2 are the same as those of the ventilation section A, and ventilation holes are uniformly formed in the side surface of the ventilation pipe 2;
step (3) manufacturing a wind collecting system 3: according to the engineering practice, a light material is adopted, an air inlet pipe 6 and an air outlet pipe 7 are respectively manufactured according to the diameters of an anchor pipe 1 and a vent pipe 2, convex teeth are respectively arranged on the outer wall of the short side of the air inlet pipe 6 and the outer wall of one end of the air outlet pipe 7, a hole with the diameter equal to that of the air outlet pipe 7 is reserved at the right angle of the air inlet pipe 6 along the central axis of the short side, the air outlet pipe 7 penetrates into the reserved hole of the air inlet pipe 6, the nesting part of the air outlet pipe 7 and the air inlet pipe 6 is fixed through bolts, the axial lead of the short sides of the air outlet pipe 7 and the air inlet pipe 6 is coincided, a wind direction plate 9 is manufactured according to the sizes of the air inlet pipe 6 and the air outlet pipe 7, a wind direction cap 8 is customized without power; manufacturing a first bent pipe C and a second bent pipe D according to the diameters of the anchor pipe 1 and the vent pipe 2, respectively arranging tooth grooves on the inner walls of one ends of the first bent pipe C and the second bent pipe D, and respectively clamping the tooth grooves of the first bent pipe C and the second bent pipe D on the convex teeth of the air inlet pipe 6 and the air outlet pipe 7;
step (4), paying off and positioning: after the side slope is excavated, determining the construction position of the automatic wind-collecting ventilating anchor rod by using a measuring instrument according to engineering design;
step (5), constructing an automatic wind collecting anchor rod:
drilling: drilling at the anchor rod construction position according to actual engineering;
placing an anchor pipe 1 and a ventilation pipe 2: placing the anchor pipe 1 into a drill hole of a slope body, grouting the anchoring section B by using a grouting pipe or a grouting machine, pulling out the grouting pipe after grouting is finished, and inserting the ventilation pipe 2 into the drill hole after slurry is bonded with a surrounding soil body through the grout outlet hole 5;
anchoring the anchor rod: anchoring the anchor pipe 1 and the ventilation pipe 2 on the surface of the side slope by using an anchorage device, and performing rust prevention treatment on the parts of the anchor pipe 1 and the ventilation pipe 2 exposed out of the surface of the side slope in the anchoring process;
installing a wind collecting system 3: connecting a first bent pipe C and a second bent pipe D on the assembled wind collecting system 3 to a ventilation pipe 2 and an anchor pipe 1 which are exposed out of the side slope in sequence through a clamp;
and (6) constructing the automatic wind-collecting ventilating anchor rod at the next position according to the steps of the step (4) and the step (5) until the completion.
The invention has the beneficial effects that: the invention comprehensively utilizes the natural ventilation principle, the convergent pipeline principle and the anchoring technology into a whole, is suitable for the disaster management of frozen soil slope engineering in cold regions, and mainly has the following advantages: firstly, a natural ventilation principle and a convergence pipeline principle are applied to the field of frozen soil slope support, an air collecting device can adjust the angle under the action of natural wind, an air inlet pipe can be always parallel to the wind direction no matter how the wind direction is, the air inlet efficiency of the air inlet pipe is kept to the maximum extent, meanwhile, the air inlet pipe adopts a horn-shaped pipe diameter changing mode from large to small, the air can be naturally pressurized by utilizing the convergence pipeline principle, the temperature of wind is reduced, and therefore the kinetic energy and the cold energy of the natural wind are utilized to the maximum extent; the unpowered hood at the air outlet pipe has a natural air draft effect, so that the convection exchange between the outside cold air and the air in the slope is promoted, the convection exchange speed inside and outside the slope can be greatly improved, and the temperature of the slope is remarkably reduced; therefore, the convection and cooling of natural wind can be accelerated at the air inlet pipe and the air outlet pipe, and the problem that the cooling effect is not obvious enough due to the limitation of wind direction in the ventilation process of the conventional ventilation anchor rod is solved; secondly, an air outlet pipe is arranged on the basis of the chimney effect, the height of the air outlet pipe is higher than that of an air inlet pipe, air convection can be further accelerated, and the temperature of a slope body is reduced; all measures for enhancing the heat convection rate between the outside and the slope body are completed by natural power, no additional power is needed, the wind energy can be utilized to the maximum extent, the cost is low, the energy is saved, the environment is protected, and the economic benefit is high; the invention has simple structure, high assembly degree and simple and easy construction method.
Drawings
FIG. 1 is a schematic illustration of the application of the present invention in slope support; FIG. 2 is a schematic view of the automatic collection and ventilation anchor of the present invention; figure 3 is a schematic view of an anchor tube 1 according to the invention; FIG. 4 is a schematic view of the vent 2 of the present invention; FIG. 5 is a schematic view of a transition piece of the present invention; FIG. 6 is a schematic view of the wind collection system of the present invention; fig. 7 is a schematic view of the air inlet duct 6 of the present invention; fig. 8 is a schematic view of an air outlet pipe 7 of the present invention; FIG. 9 is a schematic view of the unpowered hood 8 of the present invention; fig. 10 is a schematic view of the wind deflector 9 of the present invention.
Description of reference numerals: anchor pipe 1, ventilation pipe 2, collection wind system 3, keep off ring 4, play thick liquid hole 5, air-supply line 6, play tuber pipe 7, unpowered hood 8, wind direction board 9, ventilation section A, anchor section B, first return bend C, second return bend D.
Detailed Description
The frozen soil slope anchoring structure can automatically collect wind at the air inlet without additional power and regardless of the wind direction, can naturally draft (exhaust) at the air outlet, and utilizes natural wind energy to the maximum extent, so that the temperature of a slope body is reduced at an accelerated speed.
The working principle of the invention is as follows: the anchoring principle is as follows: after the automatic air exhaust and ventilation collecting anchor rod is placed in a slope body, cement slurry is injected by using the pressure of a grouting pipe, the slurry penetrates through a slurry outlet hole in the side face of an anchoring section of the anchor pipe and is bonded with surrounding soil, after grouting is finished, the grouting pipe is pulled out, the anchor pipe is tensioned and anchored when the slurry reaches the designed strength, and a baffle ring between a ventilation section and the anchoring section can prevent the slurry from flowing backwards to enter a ventilation pipe; secondly, wind collecting principle: each component of the air collecting system is made of light materials (such as light stainless steel), the air inlet pipe and the air outlet pipe are arranged on the transition connecting piece through tooth grooves, when natural wind blows through the air collecting system, as long as the wind direction plates are not parallel to the wind direction, the wind direction plates can rotate under the action of the wind, so that the air inlet pipe and the air outlet pipe are driven to rotate in a rotating mode, and the pipe opening of the air inlet pipe is always consistent with the wind direction; the pipe orifice of the air inlet pipe adopts a horn head form which is gradually reduced, the principle of a convergent pipeline can be reasonably utilized, air is naturally pressurized when natural air flows through the gradually-changed horn head to achieve the effect of compressing air, and meanwhile, the temperature is reduced, so that the air inlet speed of the air inlet pipe of the air collection device is accelerated; thirdly, air exhaust and cooling principle: the natural wind enters the interior of the side slope through the air inlet pipe, the unpowered air cap can timely extract heat in the side slope under the action of the natural wind, the air outlet pipe continuously takes away the heat in the side slope to enable pressure difference to be generated inside and outside the side slope, more cold air enters the interior of the side slope through the air inlet pipe, external cold air continuously enters the interior of the slope through the air collecting device, accordingly convection exchange between the external cold air and the air in the side slope is facilitated, the convection exchange speed inside and outside the side slope can be greatly improved, and the temperature of the slope is remarkably reduced.
As shown in fig. 1-6, the invention is a ventilating anchor rod capable of automatically collecting and discharging wind and a construction method, the ventilating anchor rod capable of automatically collecting and discharging wind structurally comprises an anchor pipe 1, a ventilating pipe 2, a wind collecting system 3 and an anchorage device, wherein the anchor pipe 1 consists of a baffle ring 4, a grout outlet hole 5, a ventilating section A and an anchoring section B, the baffle ring 4 is a circular steel plate which has the same inner diameter as the anchor pipe 1 and is positioned at the boundary of a slip surface of a side slope, the anchor pipe 1 is a circular straight pipe, the anchor pipe 1 is divided into the ventilating section A and the anchoring section B by taking the baffle ring 4 as a boundary, and the side surface of the anchoring section B is uniformly provided with the grout outlet hole 5; the vent pipe 2 is a circular straight pipe with the diameter equal to the outer diameter of the baffle ring 4; the air collecting system 3 comprises an air inlet pipe 6, an air outlet pipe 7, an unpowered hood 8, a wind direction plate 9 and a transition connecting piece, wherein the air inlet pipe 6 is an L-shaped bent pipe with the long side in a horn shape and the short side with the same diameter as the ventilation pipe 2, the air outlet pipe 7 is a straight pipe with the same diameter as the anchor pipe 1, a hole with the same diameter as the air outlet pipe 7 is reserved at the right angle of the air inlet pipe 6 along the central axis of the short side, a port of the short side of the air inlet pipe 6 is provided with convex teeth along the outer wall, one end of the air outlet pipe 7 is provided with convex teeth along the outer wall, the other end of the air outlet pipe is connected with the unpowered hood 8, the wind direction plate 9 is a right angle triangular plate welded on the upper edge of the outer side of the long side of the air inlet pipe 6, the long right angle edge of the wind direction plate 9 is axially flush with the long side of the air inlet pipe 6, the air outlet pipe 7 is embedded into the hole reserved at the right angle of the air, the first bent pipe C and the second bent pipe D are both provided with tooth grooves along the radial direction of the inner pipe wall at the inner side of the port at one end, one end of the air inlet pipe 6 with convex teeth is clamped on the tooth grooves of the bent pipe C, and one end of the air outlet pipe 7 with convex teeth is clamped on the tooth grooves of the second bent pipe D; grouting is carried out on the anchoring section B of the anchor pipe 1, so that the anchoring section B is bonded with the surrounding soil body, the ventilation pipe 2 is sleeved outside the anchor pipe 1, the anchor pipe 1 and the ventilation pipe 2 are anchored on the surface of the side slope through an anchorage device, the anchor pipe 1 and the ventilation pipe 2 are exposed out of the surface of the side slope, and the first bent pipe C and the second bent pipe D in the air collecting system 3 are connected with the exposed ventilation pipe 2 and the exposed anchor pipe 1 through clamping hoops respectively, so that the automatic air collecting and exhausting ventilation anchor rod is formed.
As shown in FIG. 6, the length of the air outlet pipe 7 is greater than that of the air inlet pipe 6, the length of the air outlet pipe 7 is 40-80 mm, the length of the long side of the air inlet pipe 6 is 20-50 mm, the length of the short side of the air inlet pipe is 10-30 mm, the diameter of the air outlet pipe 7 is 50-60 mm, and the diameter of the air inlet pipe 6 is 100-200 mm.
As shown in fig. 1 to 2, the diameter of the first bend pipe C is larger than that of the air inlet pipe 6, the matching degree of the tooth grooves on the first bend pipe C and the teeth on the air inlet pipe 6 enables the air inlet pipe 6 to rotate on the first bend pipe C, and the diameter of the first bend pipe C is 105mm to 205 mm.
As shown in the figure, the diameter of the second bent pipe D is larger than that of the air outlet pipe 7, the tooth grooves in the second bent pipe D and the convex teeth in the air outlet pipe 7 are matched to enable the air outlet pipe 7 to rotate on the second bent pipe D, and the diameter of the second bent pipe D is 55 mm-65 mm.
As shown in fig. 1 to 7, the construction method of the anchor rod capable of automatically collecting, exhausting and ventilating comprises the following steps:
step (1), anchor pipe 1 is manufactured: the anchor pipe 1 is a steel pipe with the diameter of 50-60 mm, the length of a ventilation section A and an anchoring section B of the anchor pipe 1 is determined according to engineering practice, a baffle ring 4 with the same outer diameter as that of the ventilation pipe 2 is fixed at the junction of the ventilation section A and the anchoring section B, grout outlet holes 5 with the diameter of 3-6 mm and the interval of 50-80 mm are uniformly formed in the anchoring section B, and convex teeth are arranged on the outer side of one end of the ventilation section A;
step (2) manufacturing a ventilation pipe 2: the ventilation pipe 2 is a steel pipe with the diameter of 100-150 mm, the length of the ventilation pipe is the same as that of the ventilation section A, ventilation holes are uniformly formed in the side face of the ventilation pipe 2, and convex teeth are arranged on the outer side of one end of the ventilation pipe 2;
step (3) manufacturing a wind collecting system 3: according to the engineering practice, a light material is adopted, an air inlet pipe 6 and an air outlet pipe 7 are respectively manufactured according to the diameters of an anchor pipe 1 and a vent pipe 2, convex teeth are respectively arranged on the outer wall of the short side of the air inlet pipe 6 and the outer wall of one end of the air outlet pipe 7, a hole with the diameter equal to that of the air outlet pipe 7 is reserved at the right angle of the air inlet pipe 6 along the central axis of the short side, the air outlet pipe 7 penetrates into the reserved hole of the air inlet pipe 6, the nesting part of the air outlet pipe 7 and the air inlet pipe 6 is fixed through bolts, the axial lead of the short sides of the air outlet pipe 7 and the air inlet pipe 6 is coincided, a wind direction plate 9 is manufactured according to the sizes of the air inlet pipe 6 and the air outlet pipe 7, a wind direction cap 8 is customized without power; manufacturing a first bent pipe C and a second bent pipe D according to the diameters of the anchor pipe 1 and the vent pipe 2, respectively arranging tooth grooves on the inner walls of one ends of the first bent pipe C and the second bent pipe D, and respectively clamping the tooth grooves of the first bent pipe C and the second bent pipe D on the convex teeth of the air inlet pipe 6 and the air outlet pipe 7;
step (4), paying off and positioning: after the side slope is excavated, determining the construction position of the automatic wind-collecting ventilating anchor rod by using a measuring instrument according to engineering design;
step (5), constructing an automatic wind collecting anchor rod:
drilling: drilling at the anchor rod construction position according to actual engineering;
placing an anchor pipe 1 and a ventilation pipe 2: placing the anchor pipe 1 into a drill hole of a slope body, grouting the anchoring section B by using a grouting pipe or a grouting machine, pulling out the grouting pipe after grouting is finished, and inserting the ventilation pipe 2 into the drill hole after slurry is bonded with a surrounding soil body through the grout outlet hole 5;
anchoring the anchor rod: anchoring the anchor pipe 1 and the ventilation pipe 2 on the surface of the side slope by using an anchorage device, and performing rust prevention treatment on the parts of the anchor pipe 1 and the ventilation pipe 2 exposed out of the surface of the side slope in the anchoring process;
installing a wind collecting system 3: connecting a first bent pipe C and a second bent pipe D on the assembled wind collecting system 3 to a ventilation pipe 2 and an anchor pipe 1 which are exposed out of the side slope in sequence through a clamp;
and (6) constructing the automatic wind-collecting ventilating anchor rod at the next position according to the steps of the step (4) and the step (5) until the completion.
The invention is further described with reference to the accompanying drawings and specific examples, which are intended to illustrate and not to limit the invention. Any modification, equivalent replacement or improvement made within the principle of the present invention after reading the present invention shall be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a can collect ventilation stock of airing exhaust automatically, includes anchor pipe (1), ventilation pipe (2), collection wind system (3) and ground tackle, its characterized in that: the anchor pipe (1) consists of a baffle ring (4), a grout outlet (5), a ventilation section (A) and an anchoring section (B), wherein the baffle ring (4) is a circular steel plate which has the same inner diameter as the anchor pipe (1) and is positioned at the boundary of a side slope slip surface, the anchor pipe (1) is a circular straight pipe, the anchor pipe (1) is divided into the ventilation section (A) and the anchoring section (B) by taking the baffle ring (4) as the boundary, and the grout outlet (5) is uniformly formed in the side surface of the anchoring section (B); the vent pipe (2) is a circular straight pipe with the diameter equal to the outer diameter of the baffle ring (4); the air collecting system (3) comprises an air inlet pipe (6), an air outlet pipe (7), an unpowered hood (8), a wind direction plate (9) and a transition connecting piece, wherein the air inlet pipe (6) is an L-shaped bent pipe with the long side in a horn shape and the short side with the same diameter as the ventilation pipe (2), the air outlet pipe (7) is a straight pipe with the diameter equal to that of the anchor pipe (1), a hole with the diameter equal to that of the air outlet pipe (7) is reserved at the right angle of the air inlet pipe (6) along the central axis of the short side, a port of the short side of the air inlet pipe (6) is provided with convex teeth along the outer pipe wall, one end of the air outlet pipe (7) is provided with convex teeth along the outer pipe wall, the other end of the air outlet pipe is connected with the unpowered hood (8), the wind direction plate (9) is a right-angle triangular plate welded at the upper edge of the outer side of the long side of the air inlet pipe (6), the long-angle side edge of, the axial lead of the air outlet pipe (7) is coincided with the axial lead of the short edge of the air inlet pipe (6), the transition connecting piece comprises a first bent pipe (C) and a second bent pipe (D) which are respectively matched with the air inlet pipe (6) and the air outlet pipe (7) in an L shape, the first bent pipe (C) and the second bent pipe (D) are both provided with tooth grooves on the inner side of the port at one end along the radial direction of the inner pipe wall, one end of the air inlet pipe (6) with convex teeth is clamped on the tooth grooves of the first bent pipe (C), and one end of the air outlet pipe (7) with convex teeth is clamped on the tooth grooves of the second bent pipe (D); grouting is conducted on the anchoring section (B) of the anchor pipe (1), the anchoring section (B) is bonded with the surrounding soil body, the ventilation pipe (2) is sleeved outside the anchor pipe (1), the anchor pipe (1) and the ventilation pipe (2) are anchored on the surface of a side slope through an anchorage device, the anchor pipe (1) and the ventilation pipe (2) are exposed out of the surface of the side slope, and a first bent pipe (C) and a second bent pipe (D) in the wind collecting system (3) are connected with the exposed ventilation pipe (2) and the exposed anchor pipe (1) through clamping hoops respectively, so that the automatic wind collecting and exhausting ventilation anchor rod is formed.
2. An automatic air-collecting and-exhausting ventilation anchor rod as claimed in claim 1, wherein the length of the air outlet pipe (7) is longer than that of the air inlet pipe (6).
3. An automatically collectable ventilation anchor according to claim 1 wherein the windward plate (9) is constructed of a lightweight material.
4. An automatically collectable ventilation anchor according to claim 1 wherein the first bend (C) has a larger diameter than the air inlet duct (6) and the second bend (D) has a larger diameter than the air outlet duct (7).
5. The construction method of the anchor rod capable of automatically collecting, exhausting and ventilating according to claim 1, characterized by comprising the steps of:
step (1) anchor pipe (1) manufacturing: determining the lengths of a ventilation section (A) and an anchoring section (B) in an anchor pipe (1) according to actual engineering, welding a baffle ring (4) at the junction of the ventilation section (A) and the anchoring section (B), uniformly forming grout outlet holes (5) in the anchoring section (B), and arranging convex teeth at the outer side of one end of the ventilation section (A);
step (2) manufacturing a ventilation pipe (2): the diameter and the length of the ventilation pipe (2) are the same as those of the ventilation section (A), and ventilation holes are uniformly formed in the side surface of the ventilation pipe (2);
step (3) manufacturing a wind collecting system (3): according to the engineering practice, the air inlet pipe (6) and the air outlet pipe (7) are respectively made of light materials according to the diameters of the anchor pipe (1) and the ventilation pipe (2), the outer wall of the short side of the air inlet pipe (6) and the outer wall of one end of the air outlet pipe (7) are respectively provided with convex teeth, holes with the same diameter as the air outlet pipe (7) are reserved at the right angle of the air inlet pipe (6) along the central axis of the short side, the air outlet pipe (7) penetrates into the reserved holes of the air inlet pipe (6), the nesting parts of the air outlet pipe (7) and the air inlet pipe (6) are fixed through bolts, so that the axial leads of the short edges of the air outlet pipe (7) and the air inlet pipe (6) are superposed, manufacturing a wind direction plate (9) according to the sizes of an air inlet pipe (6) and an air outlet pipe (7), customizing an unpowered hood (8), installing the unpowered hood (8) at one end of the air outlet pipe (7) which is not provided with convex teeth, and welding the wind direction plate (9) on the long edge of the air inlet pipe (6); manufacturing a first bent pipe (C) and a second bent pipe (D) according to the diameters of the anchor pipe (1) and the ventilation pipe (2), respectively arranging tooth grooves on the inner walls of one ends of the first bent pipe (C) and the second bent pipe (D), and respectively clamping the tooth grooves of the first bent pipe (C) and the second bent pipe (D) on the convex teeth of the air inlet pipe (6) and the air outlet pipe (7);
step (4), paying off and positioning: after the side slope is excavated, determining the construction position of the automatic wind-collecting ventilating anchor rod by using a measuring instrument according to engineering design;
step (5), constructing an automatic wind collecting anchor rod:
drilling: drilling at the anchor rod construction position according to actual engineering;
placing an anchor pipe (1) and a ventilation pipe (2): placing the anchor pipe (1) into a drill hole of a slope body, grouting the anchoring section (B) by using a grouting pipe or a grouting machine, pulling out the grouting pipe after grouting is finished, and inserting the ventilation pipe (2) into the drill hole after the slurry is bonded with the surrounding soil body through the grout outlet hole (5);
anchoring the anchor rod: anchoring the anchor pipe (1) and the ventilation pipe (2) on the surface of the side slope by using an anchorage device, and performing rust prevention treatment on the parts of the anchor pipe (1) and the ventilation pipe (2) exposed out of the surface of the side slope in the anchoring process;
installing a wind collecting system (3): connecting a first bent pipe (C) and a second bent pipe (D) on the assembled wind collecting system (3) to a ventilation pipe (2) and an anchor pipe (1) exposed out of the side slope in sequence through a hoop;
and (6) constructing the automatic wind-collecting ventilating anchor rod at the next position according to the steps of the step (4) and the step (5) until the completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
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| CN113513035A (en) * | 2021-06-23 | 2021-10-19 | 国网河北省电力有限公司邢台供电分公司 | Ventilation anchor rod |
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