CN113846991B - Reinforcing structure and reinforcing method for inner wall of drill hole - Google Patents
Reinforcing structure and reinforcing method for inner wall of drill hole Download PDFInfo
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- CN113846991B CN113846991B CN202111105034.3A CN202111105034A CN113846991B CN 113846991 B CN113846991 B CN 113846991B CN 202111105034 A CN202111105034 A CN 202111105034A CN 113846991 B CN113846991 B CN 113846991B
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 86
- 238000007493 shaping process Methods 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims description 72
- 238000009434 installation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 32
- 238000005728 strengthening Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The application relates to the field of geological exploration drilling, in particular to a reinforcing structure and a reinforcing method for an inner wall of a drill hole, wherein the reinforcing structure for the inner wall of the drill hole comprises a shaping piece extending along the axial direction of the drill hole, a reinforcing layer is formed between the shaping piece and the inner wall of the drill hole through pouring concrete, a grouting opening for filling the concrete is formed in the shaping piece, and sealing rings for sealing the concrete of the reinforcing layer are respectively arranged at two ends of the shaping piece; the shaping piece comprises an elastic shaping cylinder and a plurality of rib plates, the plugging ring is elastic and sleeved on the outer side wall of the shaping cylinder, and an expanding and supporting assembly is further arranged in the shaping cylinder. In the scheme of this application, utilize moulded piece pouring concrete to form the reinforcing layer and consolidate drilling inner wall, moulded piece shrink when moving in the drilling simultaneously to reduce the resistance when removing moulded piece, thereby made things convenient for constructor's operation.
Description
Technical Field
The application relates to the field of geological exploration drilling, in particular to a reinforcing structure and a reinforcing method for an inner wall of a borehole.
Background
Drilling refers to a means of drilling holes in rock strata by using mechanical equipment and taking out cores or soil samples to know geological conditions, and is an exploration method for engineering geological exploration.
Formations traversed by drilling are generally complex, and the inner walls of the borehole in geology weak and loose formations are prone to instability and collapse, which can seriously affect drilling construction. At present, the main mode of reinforcing the inner wall of a borehole is slurry retaining wall and steel sleeve retaining wall, and different reinforcing modes are adopted aiming at different working conditions. When the drilling hole passes through a complex stratum which is easy to collapse and leak, continuous drilling is needed, and when the slurry wall protection is ineffective, steel sleeve wall protection measures are adopted to prevent the upper hole wall from being unstable and damaged.
The steel sleeve retaining wall typically uses a sleeve diameter slightly larger than the diameter of the borehole in order to stabilize the position of the sleeve within the borehole. But because the greater frictional force that exists between sleeve and the drilling inner wall, the resistance is great when the sleeve removes in the drilling, presses the sleeve into the drilling and all takes time and energy to pull out the sleeve from the drilling, inconvenient constructor's operation.
Disclosure of Invention
In order to facilitate the inner wall of constructor reinforcement drilling, this application provides a drilling inner wall reinforced structure.
On the one hand, the application provides a drilling inner wall reinforced structure adopts following technical scheme:
the utility model provides a drilling inner wall reinforced structure, includes the shaping piece that extends along drilling axis direction, shaping piece week side all sets up with the inner wall interval of drilling, is formed with the enhancement layer through pouring concrete between shaping piece and the inner wall of drilling, has offered the slip casting mouth that is used for filling concrete on the shaping piece, and the both ends of shaping piece are equipped with the shutoff circle that is used for shutoff enhancement layer concrete respectively; the molding piece comprises a molding barrel with elasticity and a plurality of rib plates circumferentially arranged on the inner wall of the molding barrel at intervals, the plugging ring is provided with elasticity and sleeved on the outer side wall of the molding barrel, and an expanding and supporting assembly used for driving the rib plates to be close to or far away from each other simultaneously is further arranged in the molding barrel.
Through adopting above-mentioned technical scheme, constructor pushes in the shaping piece earlier and need consolidate the position of inner wall in the drilling, then makes many ribbed plates keep away from each other through expanding the support subassembly, and the internal diameter of moulding section of thick bamboo will grow, and two shutoff rings also will follow the deformation, until the shutoff ring paste closely after the drilling inner wall, constructor begins to pour into the concrete into between moulding section of thick bamboo and the drilling inner wall through the slip casting mouth, after the concrete solidifies and forms the reinforcement layer, the reinforcement layer alright play the effect of reinforcing drilling inner wall.
Before the shaping piece gets into in the drilling, constructor control many rib are close to recently shrink shaping section of thick bamboo each other for shaping section of thick bamboo is less than the aperture of drilling, can greatly reduce the friction between shaping section of thick bamboo and the drilling inner wall, and shaping piece then can reach the position of reinforcing the drilling inner wall more conveniently, thereby has made things convenient for constructor's operation. After the reinforcing layer is formed, constructors shrink the shaping cylinder through the expanding and supporting assembly, so that the shaping piece can be conveniently pulled out of the drilled hole.
Preferably, the expanding and supporting assembly comprises a mounting rod penetrating through the molding barrel and fixed in position, two groups of connecting pieces are arranged on the mounting rod at intervals along the axis direction of the molding barrel, the connecting pieces comprise lantern rings sleeved on the mounting rod in a sliding mode, traction rods are hinged between the lantern rings and each rib plate, the two groups of connecting pieces are arranged in a mirror symmetry mode, and driving pieces for driving the two lantern rings to be close to each other or away from each other are further arranged on the mounting rod.
Through adopting above-mentioned technical scheme, will drive many traction levers and rotate simultaneously when the lantern ring removes, every traction lever will drive corresponding floor and remove. When two lantern rings are close to each other or are far away from each other through the driving piece, the traction rod in the two groups of connecting pieces can drive the plurality of rib plates to be far away from the installation rod together, so that the effect of expanding the molding cylinder is achieved, and conversely, the molding cylinder can shrink and deform.
Preferably, the driving piece comprises a screw rod rotationally connected to the mounting rod, the screw rod penetrates through the two lantern rings and is in threaded fit with the two lantern rings, the screw rod is divided into two sections with opposite rotation directions, the two lantern rings are in threaded fit with the two sections respectively, and a motor for rotating the screw rod is further arranged on the mounting rod.
Through adopting above-mentioned technical scheme, after the motor drive screw rotates, under the screw thread traction effect, two lantern rings will be close to each other or keep away from each other. After stopping rotating the screw, the collar is fixed in position on the mounting rod by the action of the thread engagement with the screw, and the shaping cylinder can be continuously in an expanded or contracted state.
Preferably, a plurality of reinforcing ribs are arranged between the shaping cylinder and the inner wall of the drill hole at intervals in the circumferential direction, and extend along the direction parallel to the axis of the drill hole.
By adopting the technical scheme, the reinforcing rib can strengthen the structural strength of the reinforcing layer and improve the capability of the reinforcing layer for resisting lateral soil pressure.
Preferably, a plurality of annular stirrups are connected between the reinforcing ribs, and the stirrups are arranged in a plurality of modes and are distributed at intervals along the extending direction of the reinforcing ribs.
Through adopting above-mentioned technical scheme, the stirrup is used for controlling the interval between the strengthening rib and the effect of contact strengthening rib for the atress between the strengthening rib can be passed through the stirrup well, and enhancement layer, strengthening rib and stirrup become a atress whole, and then can promote the reinforcement effect to the drilling inner wall.
Preferably, positioning rings are respectively arranged at two ends of the molding cylinder, the positioning rings are positioned at one sides opposite to the two plugging rings, the end part of each reinforcing rib is connected with the positioning ring at the same side, and each positioning ring is respectively connected with the adjacent plugging ring.
Through adopting above-mentioned technical scheme, at first the retainer plate plays the effect of each strengthening rib of prepositioning for the shaping position, convenient follow-up connection stirrup. Secondly, the reinforcing ribs are arranged on the molding piece by means of the positioning rings and enter the drilling holes together with the molding piece, so that the thickness of the protective layer of the reinforcing ribs in the reinforcing layer can be ensured, and the reinforcing ribs are prevented from being exposed out of the concrete of the reinforcing layer.
Preferably, a plurality of clamping grooves are circumferentially spaced apart from one side of the positioning ring, which is close to the adjacent plugging ring, a plurality of clamping parts are arranged on one side of the plugging ring, which is close to the adjacent positioning ring, corresponding to the plurality of clamping grooves, the clamping grooves extend along the radial direction of the positioning ring and are communicated with the inner wall of the positioning ring, and the clamping parts can be matched with any clamping groove in a clamping way.
Through adopting above-mentioned technical scheme, when the installation strengthening rib, connect retainer plate and shutoff circle earlier, make every joint portion on the shutoff circle correspond in the joint groove of embedding retainer plate, then fix the strengthening rib between two retainer plates by root to stabilize the holistic position behind strengthening rib and the stirrup connection. When the molding cylinder is expanded, the embedding depth of each clamping part in the clamping groove is increased along with the expansion and deformation of the plugging ring. After the reinforcing layer is formed, the molding cylinder and the plugging rings are contracted, each clamping part gradually falls out of the corresponding embedded clamping groove until the two plugging rings are separated from the adjacent positioning rings, and the molded part can be smoothly taken out from the drilled hole.
Preferably, an air cavity is arranged in the sealing ring, and an air charging port for charging air into the air cavity is arranged on the sealing ring.
Through adopting above-mentioned technical scheme, after the sealing ring is tightly pasted with the drilling inner wall, can be through the air cavity of inflation inlet to sealing ring in aerifing, sealing ring can further expansion and deformation, still have the gap between sealing ring and the drilling inner wall then can further be sealed, promotes the shutoff effect of sealing ring.
On the other hand, the application also provides a method for reinforcing the inner wall of the drill hole, which is applied to the reinforcing structure of the inner wall of the drill hole, and adopts the following technical scheme:
s1, moving a shaping piece to a position for reinforcing the inner wall in a drilling hole, then moving a lantern ring through a driving piece, and driving a plurality of rib plates to be far away from a mounting rod through a traction rod by the lantern ring so as to expand the shaping cylinder until plugging rings at two ends of the shaping cylinder are tightly attached to the inner wall of the drilling hole;
s2, filling concrete into the interval position between the shaping cylinder and the inner wall of the drill hole through the grouting opening, and forming a reinforcing layer after the concrete is solidified;
s3, reversely moving the lantern ring through the driving piece to drive the plurality of rib plates to be close to the mounting rod at the same time, so that the molding barrel is contracted to be separated from contact with the reinforcing layer, and then pulling out the molding piece from the drilling hole.
Through adopting above-mentioned technical scheme, before moving the shaping piece that is used for strengthening the drilling inner wall to the drilling in, shrink the shaping section of thick bamboo that can warp makes it can move in the drilling with the mode that breaks away from the contact with the drilling inner wall to reduce the resistance that the shaping piece moved in the drilling, make things convenient for constructor to push away the shaping piece to the appointed position in the drilling. And then forming a reinforcing layer by pouring concrete, reinforcing the inner wall of the drill hole by means of the reinforcing layer, and pulling the molding piece out of the drill hole to make room for continuous drilling in the drill hole.
In summary, the present application includes at least one of the following beneficial technical effects:
through the arrangement of the shaping piece and the plugging piece, concrete can be poured at the position of the inner wall of the drill hole to be reinforced to form a reinforcing layer, the inner wall of the drill hole is reinforced by means of the reinforcing layer, and meanwhile, due to the arrangement of the shaping barrel capable of expanding and contracting deformation, a constructor can conveniently move the shaping piece into the drill hole and take out the shaping piece from the drill hole, so that the operation of reinforcing the inner wall of the drill hole by the constructor can be facilitated;
through the arrangement of the reinforcing ribs and the stirrups, the structural strength of the reinforcing layer can be enhanced, so that the collapse resistance of the reinforcing layer on the inner wall of the drill hole can be improved;
through setting up of retainer plate, can make things convenient for the installation of strengthening rib to and the position of whole in the drilling after stable strengthening rib and stirrup are connected, the mode that retainer plate and shutoff circle are connected through joint groove and joint portion simultaneously makes the shutoff circle break away from with the retainer plate after the shrink, thereby conveniently pulls out the shaping piece from in the drilling.
Drawings
FIG. 1 is a schematic cross-sectional view of a borehole wall reinforcement structure in accordance with an embodiment of the present application;
FIG. 2 is a schematic diagram showing the construction of a reinforcement assembly;
FIG. 3 is a schematic view showing the structure of the molding;
FIG. 4 is a schematic diagram showing the explosive structure of the closure;
FIG. 5 is a schematic view mainly showing the construction of the spreader assembly;
fig. 6 is a schematic view mainly showing the positions of the reinforcing bars and stirrups on the molding member and their installation.
Reference numerals illustrate: 1. drilling holes; 2. a reinforcing layer; 3. a reinforcement assembly; 31. shaping piece; 311. shaping the cylinder; 3111. a grouting port; 312. rib plates; 32. a blocking member; 321. a plugging ring; 3211. an air cavity; 3212. an inflation inlet; 3213. a clamping part; 322. a positioning ring; 3221. a clamping groove; 4. a spread assembly; 41. a mounting rod; 42. a connecting piece; 421. a collar; 422. a traction rod; 43. a driving member; 431. a screw; 432. a motor; 5. reinforcing ribs; 6. and (5) hooping.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-6.
The embodiment of the application discloses a drilling inner wall reinforced structure. Referring to fig. 1, the reinforcing structure includes a reinforcing layer 2 and a reinforcing member 3, the reinforcing layer 2 is formed by casting a circle of concrete by fitting the inner wall of a borehole 1, and the reinforcing member 3 is used to space the casting concrete from the inner wall of the borehole 1.
Referring to fig. 1, 2 and 3, the reinforcing component 3 includes a shaping member 31 and two sets of blocking members 32, the shaping member 31 extends along the axial direction of the borehole 1, the axial line of the shaping member 31 is identical to the axial line of the borehole 1, and the circumferential sides of the shaping member 31 are all spaced from the inner wall of the borehole 1. Two sets of plugging pieces 32 are respectively sleeved at two ends of the shaping piece 31, the outer side wall of the plugging piece 32 is tightly attached to the inner wall of the drilling hole 1, the shaping piece 31, the inner wall of the drilling hole 1 and the two sets of plugging pieces 32 jointly enclose a space for pouring concrete of the reinforcing layer 2, and the plugging pieces 32 are provided with grouting openings 3111 for injecting concrete into the space.
The reinforcing component 3 is moved to the position where the inner wall of the drilling hole 1 needs to be reinforced, concrete is injected through the grouting openings 3111, the molding piece 31 serves as a molding template of the concrete, and a circle of reinforcing layer 2 attached to the inner wall of the drilling hole 1 is formed after the concrete is solidified, so that the inner wall of the drilling hole 1 is reinforced.
Referring to fig. 3, the molding member 31 includes a molding cylinder 311 and a plurality of rib plates 312, the molding cylinder 311 is made of an elastic material, the molding cylinder 311 is coaxial with the borehole 1, an outer sidewall of the molding cylinder 311 is disposed at an interval from an inner wall of the borehole 1, and a slip casting port 3111 is disposed on the molding cylinder 311. The rib plates 312 are made of hard materials, a plurality of rib plates 312 are circumferentially fixed on the inner side wall of the molding cylinder 311 at equal angular intervals, the length direction of the rib plates 312 is parallel to the axis of the molding cylinder 311, and the length of the rib plates 312 is the same as the length of the molding cylinder 311.
Referring to fig. 4, the plugging member 32 includes a plugging ring 321 fixedly sleeved on the outer sidewall of the molding cylinder 311, the plugging member 32 is made of an elastic material, an air cavity 3211 is disposed in the plugging ring 321, an air charging port 3212 communicating with the air cavity 3211 is disposed on the plugging ring 321, and air can be pumped into the air cavity 3211 through the air charging port 3212.
Referring to fig. 5, the molding member 31 is provided with a spreader assembly 4, and the spreader assembly 4 is used for driving the plurality of ribs 312 to approach each other or to separate from each other. The expanding assembly 4 comprises a mounting rod 41 and two groups of connecting pieces 42 arranged on the mounting rod 41, wherein the two groups of connecting pieces 42 are distributed at intervals along the length direction of the mounting rod 41, and the mounting rod 41 is connected with the shaping piece 31 through the connecting pieces 42.
Referring to fig. 1 and 5, the mounting rod 41 is coaxial with the molding member 31, the bottom end of the mounting rod 41 is inserted into the molding cylinder 311, and the top end of the mounting rod 41 is located outside the hole of the drilling hole 1, so as to fix the position of the mounting rod 41.
Referring to fig. 5, two sets of connecting members 42 are located in the molding member 31, the structures of the two sets of connecting members 42 are arranged in mirror symmetry in a plane perpendicular to the axis of the molding member 31, and the distances between the two sets of connecting members 42 and the end faces of the molding members 31 adjacent to each other are the same. The connecting pieces 42 comprise a lantern ring 421 which is slidably sleeved on the mounting rod 41, a plurality of traction rods 422 are hinged to the lantern ring 421, the traction rods 422 are in one-to-one correspondence with the plurality of rib plates 312, the traction rods 422 obliquely extend towards the direction away from the other group of connecting pieces 42 and are hinged to the corresponding rib plates 312, and the rotation axes of the two ends of the traction rods 422 are parallel. When the collar 421 slides on the mounting rod 41, one end of the traction rod 422 is driven to move, and the other end of the traction rod 422 drives the corresponding rib plate 312 to move.
When the two collars 421 are close to each other, the plurality of traction rods 422 will be away from the mounting rod 41 at the same time, the portion of the molding barrel 311 between every two adjacent rib plates 312 will be stretched, the molding barrel 311 together with the two plugging rings 321 will be expanded synchronously, the inner diameter of the molding member 31 will be increased, and conversely, the inner diameter of the molding member 31 will be reduced. Before the molded part 31 is sent into the drilling hole 1, the gathering rib plates 312 enable the molded cylinder 311 to be reduced to be smaller than the aperture of the drilling hole 1, so that the resistance of the molded part 31 when moving in the drilling hole 1 can be greatly reduced. After the shaping piece 31 reaches the position where the inner wall of the drill hole 1 needs to be reinforced, the shaping piece 31 is expanded until the plugging ring 321 is tightly attached to the inner wall of the drill hole 1, and then concrete can be input between the shaping piece 31 and the inner wall of the drill hole 1.
After the sealing ring 321 is tightly attached to the inner wall of the drill hole 1, gas can be pumped into the air cavity 3211 of the sealing ring 321, the sealing ring 321 can further expand and deform, and gaps still existing between the sealing ring 321 and the inner wall of the drill hole 1 can be sealed.
Referring to fig. 5, the spreader assembly 4 further includes a driving member 43, the driving member 43 being configured to urge the two collars 421 toward or away from each other. The driving member 43 includes a screw 431 rotatably coupled to the mounting bar 41, the screw 431 being parallel to the mounting bar 41, the screw 431 passing through the two collars 421 and being screw-engaged with the two collars 421. Screw 431 is divided into two sections with opposite rotation directions, and two collars 421 are respectively in threaded fit with the two sections. The mounting rod 41 is also fixed with a motor 432 for rotating the screw 431, and an output shaft of the motor 432 is coaxially connected with the screw 431.
After the screw 431 is rotated by the motor 432, the two collars 421 will come close to or move away from each other. After stopping rotating the screw 431, the collar 421 will be fixed at the position on the mounting rod 41 due to the engagement of the collar 421 with the screw 431, the distance between the rib 312 and the mounting rod 41 will be unchanged, and the plugging ring 321 can be continuously abutted against the inner wall of the borehole 1, or the molding barrel 311 can be kept in a continuously contracted state.
Referring to fig. 1 and 6, in order to enhance the structural strength of the reinforcing layer 2, a plurality of reinforcing ribs 5 are further provided in the reinforcing layer 2, the plurality of reinforcing ribs 5 are circumferentially and equiangularly spaced around the axis of the borehole 1, and the reinforcing ribs 5 extend in a direction parallel to the axis of the borehole 1.
Referring to fig. 6, the reinforcing ribs 5 are welded together by the annular stirrups 6, so that the stress between the reinforcing ribs 5 can be well transmitted through the stirrups 6. Stirrup 6 sets up to a plurality of and equidistant interval arrangement along the length direction of strengthening rib 5, and strengthening rib 5 is located the inboard of stirrup 6, and the external diameter of stirrup 6 is less than or equal to the aperture of drilling 1, and this embodiment takes stirrup 6 external diameters to be less than the drilling 1 aperture as an example to reduce the friction between stirrup 6 and the drilling 1 inner wall.
Referring to fig. 4 and 6, the plugging member 32 further includes a positioning ring 322 sleeved on the molding cylinder 311, and the positioning ring 322 is located at one side of the plugging ring 321 close to the plugging member 32 of the other group. One side of the positioning ring 322 is connected with the adjacent plugging ring 321, and the other side is connected with the adjacent end of each reinforcing rib 5 in a plugging manner.
Referring to fig. 1 and 4, the outside diameter of the spacer ring 322 is equal to the bore diameter of the borehole 1 to reduce friction between the spacer ring 322 and the inner wall of the borehole 1. In addition, the thickness of the positioning ring 322 in the radial direction of the drill hole 1 is smaller than or equal to the thickness of the plugging ring 321 when the plugging ring is not deformed, and the thickness of the positioning ring and the plugging ring is equal in this embodiment.
The reinforcing bars 5, together with the stirrups 6, are introduced into the borehole 1 together with the shaped part 31 by means of being mounted on the shaped part 31. Before the shaped part 31 is introduced into the borehole 1, the reinforcing ribs 5 are arranged on the circumferential side of the shaped part 31. The two ends of the reinforcing ribs 5 are respectively connected with a positioning ring 322 in an inserting mode, the positioning rings 322 can position each reinforcing rib 5 relative to the molding piece 31, and then the stirrups 6 are connected with the reinforcing ribs 5.
Referring to fig. 4, a side wall of the positioning ring 322, which is close to the adjacent plugging ring 321, is provided with a plurality of clamping grooves 3221, the plurality of clamping grooves 3221 are arranged at equal angular intervals around the axial circumference of the positioning ring 322, and each clamping groove 3221 extends along the radial direction of the positioning ring 322 and is communicated with the inner side wall of the positioning ring 322. One side of the plugging ring 321, which is close to the adjacent positioning ring 322, is fixedly connected with a plurality of clamping parts 3213, the length of each clamping part 3213 extends along the radial direction of the plugging ring 321, and the cross section of each clamping part 3213 cut in the direction perpendicular to the extending direction of the clamping part is T-shaped. The plurality of clamping portions 3213 are arranged at equal angle intervals around the axis of the plugging ring 321, the plurality of clamping portions 3213 are in one-to-one correspondence with the plurality of clamping grooves 3221, and each clamping portion 3213 can be slidably embedded into any clamping groove 3221 from the inner side of the positioning ring 322.
When connecting the positioning ring 322 and the plugging ring 321, firstly, the shrinkage molding piece 31 is contracted to reduce the diameter of the plugging ring 321, after the positioning ring 322 is sleeved on the molding piece 31, the position of the positioning ring 322 is adjusted to enable each clamping groove 3221 to correspond to one clamping portion 3213, then the plugging ring 321 is expanded to a proper degree, and the clamping portions 3213 are embedded into the corresponding clamping grooves 3221 to play a role of temporarily connecting the positioning ring 322 and the plugging ring 321. And the expansion degree of the plugging ring 321 is limited, so that the outer diameter of the plugging ring 321 is still smaller than the aperture of the drilling hole 1 at the moment, and the plugging ring 321 and the inner wall of the drilling hole 1 cannot have larger friction when the molding piece 31 enters the drilling hole 1.
When the molding member 31 and the plugging ring 321 are expanded again at the position of the reinforced inner wall in the drill hole 1, the depth of each clamping portion 3213 on the plugging ring 321 embedded into the corresponding clamping groove 3221 will be increased until the plugging ring 321 is tightly attached to the inner wall of the drill hole 1. After the concrete is solidified, the positioning ring 322 is fixed by the reinforcing ribs 5, the plugging ring 321 is shrunk by shrinking the shaping member 31, each clamping portion 3213 on the plugging ring 321 is separated from the corresponding clamping groove 3221, and then the shaping member 31 can be taken out from the drilled hole 1.
The implementation principle of the embodiment of the application is as follows: before the molded part 31 is sent into the drilling hole 1, the rib plates 312 are closed towards the mounting rod 41 through the expanding and supporting assembly 4 to shrink the molded cylinder 311, so that the molded cylinder 311 is smaller than the aperture of the drilling hole 1, the resistance of the molded cylinder 311 moving in the drilling hole 1 can be greatly reduced, and constructors can conveniently move the molded part 31 to the position where the inner wall of the drilling hole 1 needs to be reinforced.
After the molding piece 31 reaches the position where the inner wall of the drilling hole 1 needs to be reinforced, the molding cylinder 311 is expanded until the plugging ring 321 is tightly attached to the inner wall of the drilling hole 1, and at the moment, concrete is filled into the interval space between the molding cylinder 311 and the inner wall of the drilling hole 1 through the grouting opening 3111 on the molding cylinder 311 to form the reinforcing layer 2.
After the concrete of the reinforcing layer 2 has set, the shaping member 31 is contracted again, the shaping cylinder 311 is brought out of contact with the concrete of the reinforcing layer 2, and then the mounting rod 41 is pulled to pull the shaping member 31 out of the borehole 1 so that the drilling exploration can be continued.
The application also provides a method for reinforcing the inner wall of the drill hole.
The reinforcing method based on the reinforcing structure of the inner wall of the drill hole comprises the following steps:
s1, determining the reinforcement length of the inner wall of a drill hole 1, and preparing a shaping piece 31 and a reinforcing rib 5 with corresponding lengths;
s2, installing the positioning rings 322, adjusting the diameter of the plugging ring 321 so that the positioning rings 322 can be sleeved on the molding piece 31, sleeving the two positioning rings 322 on the molding piece 31, expanding the plugging ring 321, enabling each clamping part 3213 on the plugging ring 321 to be correspondingly embedded into one clamping groove 3221, and completing connection of the positioning rings 322 and the plugging ring 321;
s3, installing reinforcing ribs 5 and stirrups 6, fixing the reinforcing ribs 5 between two positioning rings 322 one by one in a mode of being connected with the positioning rings 322 in an inserting mode, sleeving the stirrups 6 on the periphery of the reinforcing ribs 5 one by one, and welding the stirrups 6 with the reinforcing ribs 5 one by one;
s4, firstly smearing a release agent on the molding cylinder 311 and the plugging ring 321, then moving the molding piece 31 to the position of the reinforced inner wall in the drilling hole 1, and then fixing the part of the mounting rod 41 which is left outside the drilling hole 1 so as to fix the position of the molding piece 31 in the drilling hole 1;
s5, starting a motor 432 to rotate a screw 431, so that two lantern rings 421 are far away from each other, each sleeve drives a traction rod 422 connected with the sleeve to push a plurality of rib plates 312 to be far away from the mounting rod 41 at the same time, and further expanding the shaping cylinder 311 and the plugging rings 321 until the two plugging rings 321 are tightly attached to the inner wall of the drilling hole 1, and at the moment, pumping gas into the plugging rings 321 to further deform and expand the plugging rings 321 so as to seal a gap still existing between the plugging rings 321 and the inner wall of the drilling hole 1;
s6, pumping concrete to the space between the shaping cylinder 311 and the inner wall of the drilling hole 1 through the grouting port 3111, and waiting for the concrete to solidify to form a reinforcing layer 2;
and S7, after the concrete of the reinforcing layer 2 is solidified, starting the motor 432 to output in the reverse direction, so that the molding cylinder 311 is contracted until the plugging ring 321 at the bottom end of the molding piece 31 can pass through the reinforcing layer 2, and then pulling out the molding piece 31 from the drill hole 1 through the mounting rod 41.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. The utility model provides a drilling inner wall reinforced structure which characterized in that: the concrete filling machine comprises a shaping piece (31) extending along the axial direction of a drilling hole (1), wherein the periphery of the shaping piece (31) is arranged at intervals with the inner wall of the drilling hole (1), a reinforcing layer (2) is formed between the shaping piece (31) and the inner wall of the drilling hole (1) through concrete pouring, a grouting opening (3111) for filling concrete is formed in the shaping piece (31), and plugging rings (321) for plugging the concrete of the reinforcing layer (2) are respectively arranged at two ends of the shaping piece (31); the molding piece (31) comprises an elastic molding cylinder (311) and a plurality of rib plates (312) circumferentially arranged on the inner wall of the molding cylinder (311) at intervals, the plugging ring (321) is elastic and sleeved on the outer side wall of the molding cylinder (311), and an expanding and supporting assembly (4) for driving the rib plates (312) to be close to each other or far away from each other simultaneously is further arranged in the molding cylinder (311).
2. The borehole interior wall reinforcing structure as set forth in claim 1, wherein: the expansion assembly (4) comprises a mounting rod (41) penetrating into a molding cylinder (311) and fixed in position, two groups of connecting pieces (42) are arranged on the mounting rod (41) at intervals along the axis direction of the molding cylinder (311), the connecting pieces (42) comprise lantern rings (421) sleeved on the mounting rod (41) in a sliding mode, traction rods (422) are hinged between the lantern rings (421) and each rib plate (312), the two groups of connecting pieces (42) are arranged in a mirror symmetry mode, and driving pieces (43) used for driving the two lantern rings (421) to be close to each other or away from each other are further arranged on the mounting rod (41).
3. The borehole interior wall reinforcing structure as set forth in claim 2, wherein: the driving piece (43) comprises a screw rod (431) which is rotatably connected to the mounting rod (41), the screw rod (431) penetrates through the two lantern rings (421) and is in threaded fit with the two lantern rings (421), the screw rod (431) is divided into two sections with opposite rotation directions, the two lantern rings (421) are in threaded fit with the two sections respectively, and a motor (432) for rotating the screw rod (431) is further arranged on the mounting rod (41).
4. The borehole interior wall reinforcing structure as set forth in claim 1, wherein: a plurality of reinforcing ribs (5) are arranged between the shaping cylinder (311) and the inner wall of the drilling hole (1) at intervals in the circumferential direction, and the reinforcing ribs (5) extend along the direction parallel to the axis of the drilling hole (1).
5. The borehole interior wall reinforcing structure as set forth in claim 4 wherein: the annular stirrups (6) are connected between the reinforcing ribs (5), and the stirrups (6) are arranged in a plurality of ways and are distributed at intervals along the extending direction of the reinforcing ribs (5).
6. The borehole interior wall reinforcing structure as set forth in claim 5 wherein: two ends of the molding cylinder (311) are respectively provided with a positioning ring (322), the positioning rings (322) are positioned on one sides opposite to the two plugging rings (321), the end part of each reinforcing rib (5) is connected with the positioning ring (322) on the same side, and each positioning ring (322) is respectively connected with the adjacent plugging ring (321).
7. The borehole interior wall reinforcing structure as set forth in claim 6 wherein: one side of the locating ring (322) close to the adjacent plugging ring (321) is circumferentially spaced and provided with a plurality of clamping grooves (3221), one side of the plugging ring (321) close to the adjacent locating ring (322) corresponds to the plurality of clamping grooves (3221) and is provided with a plurality of clamping portions (3213), the clamping grooves (3221) extend along the radial direction of the locating ring (322) and are communicated with the inner wall of the locating ring (322), and the clamping portions (3213) can be matched with any clamping groove (3221) in a clamping mode.
8. The borehole interior wall reinforcing structure as set forth in claim 1, wherein: an air cavity (3211) is arranged in the sealing ring (321), and an inflation inlet (3212) for inflating the air cavity (3211) is arranged on the sealing ring (321).
9. A method of reinforcing a borehole wall reinforcing structure as set forth in any one of claims 2-8 wherein: the method comprises the following steps:
s1, moving a shaping piece (31) to a position for reinforcing the inner wall in a drilling hole (1), then moving a lantern ring (421) through a driving piece (43), and driving a plurality of rib plates (312) to be far away from an installation rod (41) through a traction rod (422) by the lantern ring (421) so as to expand a shaping cylinder (311) until plugging rings (321) at two ends of the shaping cylinder (311) are tightly attached to the inner wall of the drilling hole (1);
s2, filling concrete into the interval position between the shaping cylinder (311) and the inner wall of the drilling hole (1) through the grouting opening (3111), and forming a reinforcing layer (2) after the concrete is solidified;
s3, reversely moving the lantern ring (421) through the driving piece (43) to drive the plurality of rib plates (312) to be close to the mounting rod (41) at the same time, further enabling the molding barrel (311) to shrink and separate from contact with the reinforcing layer (2), and then lifting the molding piece (31) out of the drilling hole (1).
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| CN202111105034.3A CN113846991B (en) | 2021-09-22 | 2021-09-22 | Reinforcing structure and reinforcing method for inner wall of drill hole |
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| CN202111105034.3A CN113846991B (en) | 2021-09-22 | 2021-09-22 | Reinforcing structure and reinforcing method for inner wall of drill hole |
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