CN111550182A - Multi-angle cement-soil pile construction equipment in tunnel and tunnel reinforcing construction method - Google Patents
Multi-angle cement-soil pile construction equipment in tunnel and tunnel reinforcing construction method Download PDFInfo
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- CN111550182A CN111550182A CN202010301375.7A CN202010301375A CN111550182A CN 111550182 A CN111550182 A CN 111550182A CN 202010301375 A CN202010301375 A CN 202010301375A CN 111550182 A CN111550182 A CN 111550182A
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- tunnel
- hole
- drill rod
- rotary
- jet grouting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/023—Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting the mast being foldable or telescopically retractable
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
Abstract
The invention discloses multi-angle cement-soil pile construction equipment in a tunnel and a tunnel reinforcing construction method, and aims to provide the multi-angle cement-soil pile construction equipment in the tunnel and the tunnel reinforcing construction method which can effectively simplify tunnel reinforcing construction steps, improve construction efficiency and have a good tunnel reinforcing effect. Multi-angle soil cement pile construction equipment in hole, spout the stake machine soon including the high pressure, the high pressure spouts the stake machine soon and includes the automobile body, running gear, work platform, the drilling rod device, rotation type tower pole mechanism and unit head, rotation type tower pole mechanism includes rotates the rotation seat that sets up on work platform through the horizontal axis, be used for the rotatory rotation seat rotary actuator who rotates the seat of drive, rotate the support tower pole that sets up on rotating the seat, the setting is used for the rotatory tower pole rotary actuator who supports the tower pole of drive on rotating the seat, the guide rail of setting on supporting the tower pole, along the gliding sliding seat of guide rail, the unit head setting is used for the drive to spout the drilling rod rotation soon on the sliding seat.
Description
Technical Field
The invention relates to the field of high-pressure jet grouting construction, in particular to multi-angle cement-soil pile construction equipment in a tunnel and a tunnel reinforcing construction method.
Background
At present, after a tunnel (such as a subway tunnel) is constructed, a certain section of tunnel needs to be reinforced so as to improve the structural stability of the tunnel; however, the existing tunnel reinforcing construction equipment and construction method are immature in technology, and have the problems of complex construction steps, low construction efficiency, poor reinforcing effect of a constructed tunnel reinforcing structure and the like. In view of this, how to develop a tunnel reinforcing construction device and a tunnel reinforcing construction method to simplify the construction steps and improve the construction efficiency and the tunnel reinforcing effect is significant.
Disclosure of Invention
The invention aims to provide the in-tunnel multi-angle cement-soil pile construction equipment and the tunnel reinforcing construction method, which can effectively simplify tunnel reinforcing construction steps, improve construction efficiency and have good tunnel reinforcing effect.
The technical scheme of the invention is as follows:
a multi-angle cement soil pile construction device in a hole comprises a high-pressure rotary jet pile machine, wherein the high-pressure rotary jet pile machine comprises a vehicle body, a walking mechanism, a working platform, a drill rod device, a rotary tower rod mechanism and a power head, the rotary tower rod mechanism comprises a rotary seat arranged on the working platform in a rotating mode through a horizontal shaft, a rotary seat rotary executing mechanism used for driving the rotary seat to rotate, a support tower rod arranged on the rotary seat in a rotating mode, a tower rod rotary executing mechanism arranged on the rotary seat and used for driving the support tower rod to rotate, a guide rail arranged on the support tower rod, a sliding seat sliding along the guide rail and a sliding seat mobile executing mechanism used for driving the sliding seat, the horizontal shaft is vertical to a rotating shaft of the support tower rod, the drill rod device comprises a rotary jet drill rod arranged on the support tower rod, the rotary jet drill rod is parallel to the guide rail, and the bottom of the rotary jet drill rod is, the power head is arranged on the sliding seat and used for driving the rotary spraying drill rod to rotate.
According to the scheme, the multi-angle cement soil pile construction equipment in the tunnel directly runs into the tunnel through the high-pressure jet grouting pile machine, and the high-pressure jet grouting pile can be directly constructed in the tunnel and other holes from inside to outside to reinforce the tunnel; specifically, as the drill bit is arranged at the bottom of the jet grouting drill rod, the high-pressure jet grouting pile machine can directly drill holes by using the jet grouting drill rod, so that the high-pressure jet grouting holes are driven to drill into a set depth; and then, the rotary jet drill rod is directly utilized to carry out high-pressure jet grouting to form a high-pressure rotary jet pile, so that the two procedures of hole leading and high-pressure jet grouting in the MJS construction method are combined into one, the integrated operation of hole leading and high-pressure jet grouting is realized, and the construction efficiency is improved. More importantly, the support tower rod can rotate, so that a vertical high-pressure jet grouting pile can be constructed right below the tunnel by adjusting the jet grouting drill rod to be in a vertical state; through adjusting the jet grouting drill rod and being in the tilt state, construct the high-pressure jet grouting stake of dextrorotation below the right side in tunnel and construct the high-pressure jet grouting stake of levorotation below the left side in tunnel to carry out the reliable support and the reinforcement of multi-angle through vertical high-pressure jet grouting stake, the high-pressure jet grouting stake of dextrorotation and the high-pressure jet grouting stake of levorotation to the tunnel, the tunnel consolidates effectually.
Preferably, the rotary spraying drill rod comprises a drill body, a drill rod head arranged at the lower end of the drill body and a drill rod tail arranged at the upper end of the drill body, wherein a cement grouting port and a gas injection port are formed in the drill rod tail, the drill body comprises a plurality of sections of single-hole pipes which are sequentially connected, inner holes of the single-hole pipes form a grouting pipeline, the high-pressure rotary spraying holes are formed in the side wall of the drill rod head and are communicated with the grouting pipeline, and the drill bit is arranged at the lower end of the drill rod head. The drill body of the drill rod device adopts the single-hole pipe, the structure is simple, the manufacturing cost can be reduced, no wiring pipe hole exists in the single-hole pipe, no data line exists, and the like, so that the drill rod device can realize continuous and equidirectional rotary spraying (for example, clockwise continuous rotary spraying), and the construction efficiency is greatly improved.
Preferably, any two adjacent single-hole pipes are connected through a connecting pipe, the connecting pipe is connected with the single-hole pipe through a plug-in type connecting structure, and the plug-in type connecting structure comprises: prevent changeing connection structure, prevent changeing connection structure including coaxial setting polygon grafting pipe on the connecting tube end, set up radial spacing hole on the lateral surface of polygon grafting pipe, set up in haplopore pipe tip be used for with polygon grafting pipe complex polygon spliced eye, set up on the lateral surface of haplopore pipe and with the radial bolt hole that the polygon spliced eye is linked together and with radial bolt hole complex connecting bolt, polygon grafting pipe is inserted and is established in the polygon spliced eye, connecting bolt's tip be equipped with radial spacing hole complex reference column, connecting bolt passes through threaded connection with radial bolt hole, and the reference column on the connecting bolt inserts in the radial spacing hole. The polygonal inserting pipe of the anti-rotation connecting structure is matched with the polygonal inserting hole, so that the rotary shearing force generated in the rotary construction process of the drill rod device can be reliably borne; the connecting bolt is only used for limiting the axial movement of the single-hole pipe, and the rotary shearing force generated by the drill rod device in the rotary construction process is not required to be borne, so that the connecting structure between the single-hole pipes is stable and reliable.
Preferably, the plug-in type connection structure further comprises a sealing connection structure, the sealing connection structure comprises a sealing circular pipe arranged at the end part of the polygonal plug-in pipe and a sealing circular hole arranged at the bottom of the polygonal plug-in hole, the sealing circular pipe is inserted into the sealing circular hole, and the sealing circular pipe is in sealing connection with the sealing circular hole.
As another preferred option, the plug-in type connection structure further comprises a sealing connection structure, the sealing connection structure comprises a sealing circular tube arranged at the end part of the polygonal plug-in pipe, a floating sealing taper sleeve slidably sleeved on the sealing circular tube, an elastic piece positioned between the floating sealing taper sleeve and the end part of the polygonal plug-in pipe, and a tapered sealing hole arranged at the hole bottom of the polygonal plug-in hole, the floating sealing taper sleeve is slidably and hermetically connected with the sealing circular tube, the outer periphery of the floating sealing taper sleeve is conical, the tapered sealing hole is matched with the floating sealing taper sleeve, and the floating sealing taper sleeve is inserted in the tapered sealing hole; the radial limiting hole is a conical limiting hole, the inner diameter of the radial limiting hole is gradually reduced from the hole opening to the hole bottom, and the positioning column is a conical positioning column; in the process that the positioning column is inserted into the radial limiting hole, the floating sealing taper sleeve is driven to move towards the conical sealing hole, so that the outer wall surface of the floating sealing taper sleeve abuts against the inner wall surface of the conical sealing hole and compresses the elastic piece, and the elastic piece provides elastic force after being compressed, so that the outer wall surface of the floating sealing taper sleeve is tightly pressed on the inner wall surface of the conical sealing hole. Therefore, the pressing force is provided in the process that the positioning column is inserted into the radial limiting hole, the outer wall surface of the floating sealing taper sleeve abuts against the inner wall surface of the conical sealing hole and compresses the pressing force of the elastic piece, the elastic piece is elastically deformed to store the pressing force, the elastic piece is compressed to provide elastic force, the outer wall surface of the floating sealing taper sleeve is pressed against the inner wall surface of the conical sealing hole, and therefore the sealing connection between the floating sealing taper sleeve and the conical sealing hole is guaranteed, and the sealing connection between the connecting pipe and the single-hole pipe is guaranteed; meanwhile, the elastic deformation of the elastic piece ensures that the installation of the connecting bolt is not influenced.
Preferably, the tail part of the drill rod comprises a tail pipe body connected with the single-hole pipe at the upper end of the drill body and an input pipe sleeved on the tail pipe body, the input pipe and the tail pipe body can rotate relatively, the cement grouting port and the gas injection port are arranged on the input pipe, the input pipe is fixed on the support tower rod through a connecting piece, and the power head is used for driving the drill body of the rotary spraying drill rod to rotate.
Preferably, the rotating seat rotating executing mechanism is a first oil cylinder, and the tower rod rotating executing mechanism is a second oil cylinder.
Preferably, the running mechanism is a crawler running mechanism, a rubber wheel running mechanism or an iron wheel running mechanism suitable for running on a rail.
A tunnel reinforcing construction method sequentially comprises the following steps:
firstly, driving a high-pressure jet grouting pile machine to a specified position in a tunnel;
(II), constructing a vertical high-pressure jet grouting pile right below a certain section of tunnel, and specifically constructing the pile by the following steps:
firstly, a rotating seat is driven to rotate by a rotating seat rotating executing mechanism, so that a support tower rod and a rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in a vertical state;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine directly drills holes downwards vertically in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable the high-pressure rotary spraying holes to drill into a set depth;
then, directly utilizing the jet grouting drill rod to perform high-pressure jet grouting, so that vertically distributed vertical high-pressure jet grouting piles are formed right below the inner wall of the tunnel, and the tunnel is supported through the vertical high-pressure jet grouting piles; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel;
thirdly, performing secondary filtration; returning to the second step until the construction of the vertical high-pressure jet grouting pile below the section of the tunnel is completed;
thirdly, constructing a right-inclined high-pressure rotary spraying pile at the right lower part of a certain section of tunnel, wherein the right-inclined high-pressure rotary spraying pile and the vertical high-pressure rotary spraying pile are positioned below the same section of tunnel; the concrete construction steps are as follows:
the rotating seat is driven to rotate by the rotating seat rotating executing mechanism, so that the support tower rod and the rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate rightwards by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in an inclined state, and the inclined angle of the rotary spraying drill rod is 0-90 degrees;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine is used for directly drilling towards the lower right in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable a high-pressure rotary spraying hole to be drilled into a set depth;
then, directly utilizing the rotary spraying drill rod to perform high-pressure jet grouting, so that right-inclined high-pressure rotary spraying piles which are distributed in an inclined mode are formed on the right lower portion of the inner wall of the tunnel, and the tunnel is supported through the right-inclined high-pressure rotary spraying piles; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel;
thirdly, performing secondary filtration; returning to the second step until the construction of the right-inclined high-pressure jet grouting pile below the section of the tunnel is completed;
constructing a left inclined high-pressure jet grouting pile at the left lower part of a certain section of tunnel, wherein the left inclined high-pressure jet grouting pile and the vertical high-pressure jet grouting pile are positioned below the same section of tunnel; the concrete construction steps are as follows:
the rotating seat is driven to rotate by the rotating seat rotating executing mechanism, so that the support tower rod and the rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate leftwards by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in an inclined state, and the inclined angle of the rotary spraying drill rod is 0-90 degrees;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine is used for directly drilling towards the lower left side in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable a high-pressure rotary spraying hole to be drilled into a set depth;
then, directly utilizing the jet grouting drill rod to carry out high-pressure jet grouting, so that a tunnel forms a left-inclined high-pressure jet grouting pile which is obliquely distributed at the left lower part of the inner wall, and the tunnel is supported through the left-inclined high-pressure jet grouting pile; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel;
thirdly, performing secondary filtration; and returning to the second step until the construction of the left-inclined high-pressure jet grouting pile below the section of the tunnel is completed. So, can carry out the reliable support and the reinforcement of multi-angle to the tunnel through vertical high pressure jet grouting pile, the high pressure jet grouting pile of right bank and the high pressure jet grouting pile of left bank, the tunnel is consolidated effectually.
The invention has the beneficial effects that: the tunnel reinforcing construction steps can be effectively simplified, the construction efficiency is improved, and the tunnel reinforcing effect is good.
Drawings
Fig. 1 is a schematic structural view of a support tower of the multi-angle soil-cement pile construction equipment in a cave in an inclined state.
Fig. 2 is a schematic structural view of a support tower of the multi-angle soil-cement pile construction equipment in a vertical state.
Fig. 3 is a schematic view of a configuration of the drill rod assembly of the present invention.
Fig. 4 is a partial structural schematic diagram of a connecting pipe and a single-hole pipe according to a second embodiment of the present invention before assembly.
Fig. 5 is a partial structural view of a connecting pipe and a single-hole pipe according to a third embodiment of the present invention before assembly.
Fig. 6 is a partial structural diagram of a third embodiment of the present invention, after the connecting pipe and the single-hole pipe are assembled.
Fig. 7 is a partial structural schematic view of a vertical high-pressure jet grouting pile constructed in the tunnel reinforcement construction method according to the fifth embodiment of the present invention.
Fig. 8 is a schematic partial structure diagram of a right-inclined high-pressure jet grouting pile constructed in the tunnel reinforcement construction method according to the fifth embodiment of the present invention.
Fig. 9 is a schematic partial structure diagram of a left-inclined high-pressure jet grouting pile constructed in the tunnel reinforcement construction method according to the fifth embodiment of the present invention.
In the figure:
a high-pressure jet grouting pile machine 1 a;
a traveling mechanism 2 a;
a working platform 3 a;
a horizontal shaft 4a.0, a rotating seat 4a.1, a supporting tower rod 4a.2, a tower rod rotating executing mechanism 4a.3, a guide rail 4a.4, a sliding seat 4a.5 and a rotating seat rotating executing mechanism 4 a.6;
a drill body 1 and a single-hole pipe 1.1;
the drill rod comprises a drill rod head 2, a high-pressure rotary jet hole 2.1, a drill bit 2.2 and a head pipe body 2.3;
the tail part 3 of the drill rod, a cement grouting port 3.1, a gas injection port 3.2, a tail pipe body 3.3 and an input pipe 3.4;
the anti-rotation connecting structure comprises an anti-rotation connecting structure 5, a polygonal inserting pipe 5.1, a polygonal inserting hole 5.2, a radial bolt hole 5.3, a connecting bolt 5.4, a positioning column 5.5 and a radial limiting hole 5.6;
the sealing connection structure comprises a sealing connection structure 6, a sealing circular tube 6.1, a sealing circular hole 6.2, a floating sealing taper sleeve 6.3, an elastic piece 6.4 and a conical sealing hole 6.5;
a power head 6 a;
a tunnel 7 a;
a vertical high-pressure jet grouting pile 8 a;
a right-inclined high-pressure jet grouting pile 9 a;
and left-inclined high-pressure jet grouting piles 10 a.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in figures 1, 2 and 3, the multi-angle cement-soil pile construction equipment in the hole comprises a high-pressure jet grouting pile machine 1 a. The high-pressure rotary jet pile machine comprises a vehicle body, a travelling mechanism 2a, a working platform 3a, a drill rod device 5a, a rotary tower rod mechanism 4a and a power head 6 a. The running mechanism is arranged on the vehicle body and used for driving the high-pressure rotary jet pile machine to run. The working platform is arranged on the vehicle body. The rotary tower rod mechanism comprises a rotating seat 4a.1, a rotating seat rotating executing mechanism 4a.6, a supporting tower rod 4a.2, a tower rod rotating executing mechanism 4a.3, a guide rail 4a.4, a sliding seat 4a.5 and a sliding seat moving executing mechanism, wherein the rotating seat 4a.1 is rotatably arranged on the working platform through a horizontal shaft 4a.0, the rotating seat rotating executing mechanism is used for driving the rotating seat to rotate, the supporting tower rod 4a.2 is rotatably arranged on the rotating seat, the rotating seat is arranged on the rotating seat and is used for driving the supporting tower rod to rotate, the guide rail 4a.4 is arranged on the supporting tower rod, the. In the embodiment, the horizontal shaft is perpendicular to the front-back direction of the working platform, and the front-back direction of the working platform is consistent with the front-back direction of the high-pressure jet grouting pile machine. The horizontal axis is perpendicular to the rotation axis of the support tower. The guide rail is vertical to the horizontal shaft. The rotating shaft of the support tower rod is vertical to the horizontal shaft. The support tower pole is parallel to the guide rail. The drill rod assembly 5a comprises a jet grouting drill rod arranged on a support tower rod. The rotary spraying drill rod is parallel to the guide rail. The bottom of the rotary spraying drill rod is provided with a high-pressure rotary spraying hole 2.1 and a drill bit 2.2. The power head is arranged on the sliding seat and used for driving the rotary spraying drill rod to rotate. The power head comprises a driving motor for driving the rotary jet drilling rod to rotate. In the embodiment, the high-pressure rotary jet pile machine is formed by modifying the existing high-pressure rotary jet pile machine, wherein the vehicle body, the walking mechanism, the working platform and the power head are in the prior art.
The in-hole multi-angle cement-soil pile construction equipment of the embodiment directly runs into a tunnel through the high-pressure jet grouting pile machine, and can directly construct the high-pressure jet grouting pile from inside to outside in holes such as the tunnel and the like to reinforce the tunnel; specifically, as the drill bit is arranged at the bottom of the jet grouting drill rod, the high-pressure jet grouting pile machine can directly drill holes by using the jet grouting drill rod, so that the high-pressure jet grouting holes are driven to drill into a set depth; and then, the rotary jet drill rod is directly utilized to carry out high-pressure jet grouting to form a high-pressure rotary jet pile, so that the two procedures of hole leading and high-pressure jet grouting in the MJS construction method are combined into one, the integrated operation of hole leading and high-pressure jet grouting is realized, and the construction efficiency is improved. More importantly, the support tower rod can rotate, so that a vertical high-pressure jet grouting pile can be constructed right below the tunnel by adjusting the jet grouting drill rod to be in a vertical state; through adjusting the jet grouting drill rod and being in the tilt state, construct the high-pressure jet grouting stake of dextrorotation below the right side in tunnel and construct the high-pressure jet grouting stake of levorotation below the left side in tunnel to carry out the reliable support and the reinforcement of multi-angle through vertical high-pressure jet grouting stake, the high-pressure jet grouting stake of dextrorotation and the high-pressure jet grouting stake of levorotation to the tunnel, the tunnel consolidates effectually.
Specifically, the running mechanism is a crawler running mechanism, or a rubber wheel running mechanism, or an iron wheel running mechanism suitable for running on a rail, or the crawler running mechanism and the iron wheel running mechanism are combined, or the rubber wheel running mechanism and the iron wheel running mechanism are combined. The concrete structure of the iron wheel travelling mechanism refers to the iron wheel travelling mechanism of a train. The rubber wheel traveling mechanism refers to a wheel traveling mechanism of an engineering vehicle.
The rotating seat rotating executing mechanism is a first oil cylinder, one end of the first oil cylinder is hinged on the working platform, and the other end of the first oil cylinder is hinged on the rotating seat; the tower rod rotation executing mechanism is a second oil cylinder, one end of the second oil cylinder is hinged on the rotating seat, and the other end of the second oil cylinder is hinged on the supporting tower rod; the sliding seat moving actuating mechanism is a third oil cylinder arranged on the support tower rod.
The support tower rod is provided with a first sliding seat limiting block and a second sliding seat limiting block, the sliding seat is positioned between the first sliding seat limiting block and the second sliding seat limiting block, and the moving distance of the sliding seat is limited through the first sliding seat limiting block and the second sliding seat limiting block.
Further, as shown in fig. 3, the jet grouting drill rod comprises a drill body 1, a drill rod head 2 arranged at the lower end of the drill body, and a drill rod tail 3 arranged at the upper end of the drill body. The tail part of the drill rod is provided with a cement grouting port 3.1 and a gas injection port 3.2. The power head is used for driving the drill body of the rotary spraying drill rod to rotate. The drill body comprises a plurality of sections of single-hole pipes 1.1 which are connected in sequence. The inner hole of the single-hole pipe forms a grouting pipeline. The high-pressure rotary spray hole 2.1 is arranged on the side wall of the drill rod head and communicated with the grouting pipeline. The drill bit 2.2 is arranged at the lower end of the drill rod head. The drill bit is arranged at the lower end of the drill rod head of the drill rod device, so that the high-pressure rotary jet pile machine can directly drill holes by using the drill rod device, and the high-pressure rotary jet hole at the drill rod head is driven to drill into a set depth; and then, high-pressure jet grouting is directly carried out by using a drill rod device to form a high-pressure jet grouting pile, so that the two procedures of hole leading and high-pressure jet grouting in the MJS construction method are combined into one, the integrated operation of hole leading and high-pressure jet grouting is realized, and the construction efficiency is improved. On the other hand, the drill body of the drill rod device adopts the single-hole pipe, so that the structure is simple, the manufacturing cost can be reduced, and the single-hole pipe is not provided with a wiring pipe hole and a data line, so that the drill rod device can realize continuous and equidirectional rotary spraying (such as clockwise continuous rotary spraying) and greatly improve the construction efficiency.
Specifically, the tail part of the drill rod comprises a tail pipe body 3.3 connected with the single-hole pipe at the upper end of the drill body and an input pipe 3.4 sleeved on the tail pipe body. The input tube and the tail tube body can rotate relatively. The cement grouting port and the gas injection port are arranged on the input pipe. The input pipe is fixed on the support tower rod through a connecting piece.
The drill rod head comprises a head pipe body 2.3 connected with the single-hole pipe at the lower end of the drill body, the upper end of the head pipe body is communicated with the single-hole pipe at the lower end of the drill body, and the lower end of the head pipe body is closed. The drill bit is arranged at the lower end of the head pipe body. The high-pressure rotary spraying hole is formed in the side wall of the head pipe body.
In this embodiment, the single-hole tube is a metal tube.
Any two adjacent sections of single-hole pipes are connected through a connecting pipe 4. The connecting pipe is connected with the single-hole pipe through a plug-in type connecting structure.
The second embodiment is as follows: the specific structure of this embodiment refers to the first embodiment, and the differences are as follows:
as shown in fig. 3 and 4, the plug-in connection structure includes an anti-rotation connection structure 5 and a sealing connection structure 6. Prevent changeing connection structure including the coaxial polygon grafting pipe 5.1 that sets up on the connecting tube tip, set up radial spacing hole 5.6 on the lateral surface of polygon grafting pipe, set up the haplopore pipe tip be used for with polygon grafting pipe complex polygon grafting hole 5.2, set up on the lateral surface of haplopore pipe and with the radial bolt hole 5.3 that the polygon grafting hole is linked together and with radial bolt hole complex connecting bolt 5.4. The polygonal inserting pipe is inserted in the polygonal inserting hole. In this embodiment, the polygonal insertion pipe is a regular polygonal insertion pipe, and the polygonal insertion hole is a regular polygonal insertion hole. The end of the connecting bolt is provided with a positioning column 5.5 matched with the radial limiting hole. The connecting bolt is connected with the radial bolt hole through threads, and the positioning column on the connecting bolt is inserted into the radial limiting hole. The radial limiting hole is a blind hole. In this embodiment, the radial limiting hole is a cylindrical hole, and the positioning column is a cylinder.
The sealing connection structure 6 comprises a sealing circular tube 6.1 arranged at the end part of the polygonal inserting tube and a sealing circular hole 6.2 arranged at the bottom of the polygonal inserting hole. The sealing circular tube is inserted in the sealing circular hole, and the sealing circular tube is connected with the sealing circular hole in a sealing mode.
The polygonal inserting pipe of the anti-rotation connecting structure is matched with the polygonal inserting hole, so that the rotary shearing force generated by the drill rod device in the rotary construction process can be reliably borne; the connecting bolt is only used for limiting the axial movement of the single-hole pipe, and the rotary shearing force generated by the drill rod device in the rotary construction process is not required to be borne, so that the connecting structure between the single-hole pipes is stable and reliable.
Further, the radial bolt hole is a counter bore, and the head of the connecting bolt is sunk into the counter bore.
The third concrete embodiment: the specific structure of this embodiment refers to the first embodiment, and the differences are as follows:
as shown in fig. 3, 5 and 6, the plug-in connection structure includes an anti-rotation connection structure 5 and a sealing connection structure 6. Prevent changeing connection structure including the coaxial polygon grafting pipe 5.1 that sets up on the connecting tube tip, set up radial spacing hole 5.6 on the lateral surface of polygon grafting pipe, set up the haplopore pipe tip be used for with polygon grafting pipe complex polygon grafting hole 5.2, set up on the lateral surface of haplopore pipe and with the radial bolt hole 5.3 that the polygon grafting hole is linked together and with radial bolt hole complex connecting bolt 5.4. The polygonal inserting pipe is inserted in the polygonal inserting hole. In this embodiment, the polygonal insertion pipe is a regular polygonal insertion pipe, and the polygonal insertion hole is a regular polygonal insertion hole. The end of the connecting bolt is provided with a positioning column 5.5 matched with the radial limiting hole. The connecting bolt is connected with the radial bolt hole through threads, and the positioning column on the connecting bolt is inserted into the radial limiting hole. The radial limiting hole is a blind hole. In this embodiment, the radial limiting hole 5.6 is a tapered limiting hole, and the inner diameter of the radial limiting hole gradually decreases from the hole opening to the hole bottom. The positioning column 5.5 is a conical positioning column.
The sealing connection structure 6 comprises a sealing circular tube 6.1 arranged at the end part of the polygonal insertion tube, a floating sealing taper sleeve 6.3 sleeved on the sealing circular tube in a sliding manner, an elastic part 6.4 positioned between the floating sealing taper sleeve and the end part of the polygonal insertion tube and a conical sealing hole 6.5 arranged at the hole bottom of the polygonal insertion hole. The floating sealing taper sleeve is connected with the sealing circular pipe in a sliding sealing mode, in the embodiment, the floating sealing taper sleeve is connected with the sealing circular pipe in a hard sealing mode, or the floating sealing taper sleeve is connected with the sealing circular pipe in a sealing mode through the rubber sealing ring. The outer peripheral surface of the floating dense taper sleeve is conical. The tapered sealing hole is matched with the floating sealing taper sleeve, and the floating sealing taper sleeve is inserted in the tapered sealing hole. The elastic piece is a spring or a spring washer or an elastic rubber gasket.
In the process that the positioning column is inserted into the radial limiting hole, the floating sealing taper sleeve is driven to move towards the conical sealing hole, so that the outer wall surface of the floating sealing taper sleeve abuts against the inner wall surface of the conical sealing hole and compresses the elastic piece, and the elastic piece provides elastic force after being compressed, so that the outer wall surface of the floating sealing taper sleeve is tightly pressed on the inner wall surface of the conical sealing hole. Therefore, the pressing force is provided in the process that the positioning column is inserted into the radial limiting hole, the outer wall surface of the floating sealing taper sleeve abuts against the inner wall surface of the conical sealing hole and compresses the pressing force of the elastic piece, the elastic piece is elastically deformed to store the pressing force, the elastic piece is compressed to provide elastic force, the outer wall surface of the floating sealing taper sleeve is pressed against the inner wall surface of the conical sealing hole, and therefore the sealing connection between the floating sealing taper sleeve and the conical sealing hole is guaranteed, and the sealing connection between the connecting pipe and the single-hole pipe is guaranteed; meanwhile, the elastic deformation of the elastic piece ensures that the installation of the connecting bolt is not influenced.
Further, the radial bolt hole is a counter bore, and the head of the connecting bolt is sunk into the counter bore.
The fourth concrete embodiment: the specific structure of this embodiment refers to the second embodiment or the third embodiment, and the difference is as follows:
the lower extreme of afterbody body is equipped with the riveting pipe, is connected through plug-in type connection structure between the single hole pipe of riveting pipe and brill body upper end, and this plug-in type connection structure's concrete structure refers to and passes through plug-in type connection structure between connecting pipe and the single hole pipe.
The upper end of the head pipe body is connected with the single-hole pipe at the lower end of the drill body through a connecting pipe, and the specific structure of the connecting pipe refers to the connecting pipe used between two adjacent sections of single-hole pipes. The connecting pipe is also connected with the head pipe body through a plug-in type connecting structure, and the specific structure of the plug-in type connecting structure refers to the plug-in type connecting structure between the connecting pipe and the single-hole pipe.
The fifth concrete embodiment: a tunnel reinforcing construction method is characterized in that multi-angle cement-soil pile construction equipment in a tunnel is adopted for construction, and the specific structure of the multi-angle cement-soil pile construction equipment in the tunnel refers to the specific embodiment I or the specific embodiment II or the specific embodiment III or the specific embodiment IV.
A tunnel reinforcing construction method sequentially comprises the following steps:
firstly, driving a high-pressure jet grouting pile machine to a specified position in a tunnel;
(II), as shown in FIG. 7, constructing a vertical high-pressure jet grouting pile 8a right below a certain section of tunnel 7a, and specifically constructing the following steps:
firstly, a rotating seat is driven to rotate by a rotating seat rotating executing mechanism, so that a support tower rod and a rotary spraying drill rod are positioned in a vertical plane, wherein the vertical plane is perpendicular to the walking direction of the high-pressure rotary spraying pile machine in the embodiment; the support tower rod is driven to rotate by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in a vertical state;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine directly drills holes downwards vertically in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable the high-pressure rotary spraying holes to drill into a set depth;
then, directly utilizing the jet grouting drill rod to perform high-pressure jet grouting, so that vertically distributed vertical high-pressure jet grouting piles are formed right below the inner wall of the tunnel, and the tunnel is supported through the vertical high-pressure jet grouting piles; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel, such as 2 meters, 3 meters, 4 meters or 5 meters;
thirdly, performing secondary filtration; returning to the second step until the construction of the vertical high-pressure jet grouting pile below the section of the tunnel is completed;
thirdly, as shown in fig. 8, constructing a right-inclined high-pressure jet grouting pile 9a at the right lower part of a certain section of tunnel 7a, wherein the right-inclined high-pressure jet grouting pile and the vertical high-pressure jet grouting pile are positioned below the same section of tunnel; the concrete construction steps are as follows:
the rotating seat is driven to rotate by the rotating seat rotating executing mechanism, so that the support tower rod and the rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate rightwards by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in an inclined state, and the inclined angle of the rotary spraying drill rod is 30 degrees;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine is used for directly drilling towards the lower right in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable a high-pressure rotary spraying hole to be drilled into a set depth;
then, directly utilizing the rotary spraying drill rod to perform high-pressure jet grouting, so that right-inclined high-pressure rotary spraying piles which are distributed in an inclined mode are formed on the right lower portion of the inner wall of the tunnel, and the tunnel is supported through the right-inclined high-pressure rotary spraying piles; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel, such as 2 meters, 3 meters, 4 meters or 5 meters;
thirdly, performing secondary filtration; returning to the second step until the construction of the right-inclined high-pressure jet grouting pile below the section of the tunnel is completed;
as shown in fig. 9, constructing a left inclined high pressure jet grouting pile 10a at the left lower part of a certain section of tunnel 7a, wherein the left inclined high pressure jet grouting pile and the vertical high pressure jet grouting pile are positioned below the same section of tunnel; the concrete construction steps are as follows:
the rotating seat is driven to rotate by the rotating seat rotating executing mechanism, so that the support tower rod and the rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate leftwards by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in an inclined state, and the inclined angle of the rotary spraying drill rod is 30 degrees;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine is used for directly drilling towards the lower left side in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable a high-pressure rotary spraying hole to be drilled into a set depth;
then, directly utilizing the jet grouting drill rod to carry out high-pressure jet grouting, so that a tunnel forms a left-inclined high-pressure jet grouting pile which is obliquely distributed at the left lower part of the inner wall, and the tunnel is supported through the left-inclined high-pressure jet grouting pile; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel, such as 1 meter, 2 meters, 3 meters, 4 meters, 5 meters, 6 meters, 7 meters, 8 meters, 9 meters or 10 meters;
thirdly, performing secondary filtration; and returning to the second step until the construction of the left-inclined high-pressure jet grouting pile below the section of the tunnel is completed. So, can carry out the reliable support and the reinforcement of multi-angle to the tunnel through vertical high pressure jet grouting pile, the high pressure jet grouting pile of right bank and the high pressure jet grouting pile of left bank, the tunnel is consolidated effectually.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. A multi-angle cement soil pile construction equipment in a hole comprises a high-pressure rotary jet pile machine, wherein the high-pressure rotary jet pile machine comprises a vehicle body, a walking mechanism, a working platform, a drill rod device, a rotary tower rod mechanism and a power head, and is characterized in that the rotary tower rod mechanism comprises a rotary seat arranged on the working platform in a rotating way through a horizontal shaft, a rotary seat rotary executing mechanism used for driving the rotary seat to rotate, a supporting tower rod arranged on the rotary seat in a rotating way, a tower rod rotary executing mechanism arranged on the rotary seat and used for driving the supporting tower rod to rotate, a guide rail arranged on the supporting tower rod, a sliding seat sliding along the guide rail and a sliding seat mobile executing mechanism used for driving the sliding seat, the horizontal shaft is vertical to a rotating shaft of the supporting tower rod, the drill rod device comprises a rotary jet drill rod arranged on the supporting tower rod, the rotary jet drill rod is parallel to the guide rail, and the bottom of the rotary jet, the power head is arranged on the sliding seat and used for driving the rotary spraying drill rod to rotate.
2. The apparatus as claimed in claim 1, wherein the rotary jetting drill rod comprises a drill body, a drill rod head disposed at a lower end of the drill body, and a drill rod tail disposed at an upper end of the drill body, the drill rod tail is provided with a cement grouting port and a gas injection port, the drill body comprises a plurality of sections of single-hole pipes connected in sequence, an inner hole of the single-hole pipe forms a grouting pipeline, the high-pressure rotary jetting hole is disposed on a side wall of the drill rod head, the high-pressure rotary jetting hole is communicated with the grouting pipeline, and the drill bit is disposed at a lower end of the drill rod head.
3. The apparatus of claim 2, wherein any two adjacent single-hole pipes are connected by a connecting pipe, the connecting pipe is connected with the single-hole pipe by a plug-in type connecting structure, and the plug-in type connecting structure comprises:
prevent changeing connection structure, prevent changeing connection structure including coaxial setting polygon grafting pipe on the connecting tube end, set up radial spacing hole on the lateral surface of polygon grafting pipe, set up in haplopore pipe tip be used for with polygon grafting pipe complex polygon spliced eye, set up on the lateral surface of haplopore pipe and with the radial bolt hole that the polygon spliced eye is linked together and with radial bolt hole complex connecting bolt, polygon grafting pipe is inserted and is established in the polygon spliced eye, connecting bolt's tip be equipped with radial spacing hole complex reference column, connecting bolt passes through threaded connection with radial bolt hole, and the reference column on the connecting bolt inserts in the radial spacing hole.
4. The apparatus as claimed in claim 3, wherein the insertion type connection structure further comprises a sealing connection structure, the sealing connection structure comprises a sealing circular tube disposed at an end of the polygonal insertion tube and a sealing circular hole disposed at a bottom of the polygonal insertion hole, the sealing circular tube is inserted into the sealing circular hole, and the sealing circular tube is connected to the sealing circular hole in a sealing manner.
5. The in-hole multi-angle cement-soil pile construction equipment as claimed in claim 3, wherein the plug-in type connection structure further comprises a sealing connection structure, the sealing connection structure comprises a sealing circular tube arranged at the end of the polygonal plug-in pipe, a floating sealing taper sleeve slidably sleeved on the sealing circular tube, an elastic member positioned between the floating sealing taper sleeve and the end of the polygonal plug-in pipe, and a tapered sealing hole arranged at the bottom of the polygonal plug-in hole, the floating sealing taper sleeve is slidably and sealingly connected with the sealing circular tube, the outer periphery of the floating sealing taper sleeve is conical, the tapered sealing hole is matched with the floating sealing taper sleeve, and the floating sealing taper sleeve is inserted into the tapered sealing hole; the radial limiting hole is a conical limiting hole, the inner diameter of the radial limiting hole is gradually reduced from the hole opening to the hole bottom, and the positioning column is a conical positioning column; in the process that the positioning column is inserted into the radial limiting hole, the floating sealing taper sleeve is driven to move towards the conical sealing hole, so that the outer wall surface of the floating sealing taper sleeve abuts against the inner wall surface of the conical sealing hole and compresses the elastic piece, and the elastic piece provides elastic force after being compressed, so that the outer wall surface of the floating sealing taper sleeve is tightly pressed on the inner wall surface of the conical sealing hole.
6. A multi-angle soil cement pile construction equipment in a hole as claimed in claim 2 or 3 or 4 or 5, wherein the drill rod tail comprises a tail pipe body connected with the single hole pipe at the upper end of the drill body and an input pipe sleeved on the tail pipe body, the input pipe and the tail pipe body can rotate relatively, the cement grouting port and the gas injection port are arranged on the input pipe, the input pipe is fixed on the support tower rod through a connecting piece, and the power head is used for driving the drill body of the rotary jet drill rod to rotate.
7. A multi-angle soil-cement pile construction equipment in a hole as claimed in claim 1, 2, 3, 4 or 5, wherein said rotating base rotating actuator is a first cylinder and said tower rotating actuator is a second cylinder.
8. A multi-angle soil cement pile construction equipment in a hole as claimed in claim 1 or 2 or 3 or 4 or 5, wherein said running gear is a crawler running gear or a rubber wheel running gear or an iron wheel running gear suitable for running on a rail.
9. A tunnel reinforcing construction method using the multi-angle soil-cement pile construction equipment in the tunnel as claimed in claims 1 to 8, characterized by comprising the following steps in sequence:
firstly, driving a high-pressure jet grouting pile machine to a specified position in a tunnel;
(II), constructing a vertical high-pressure jet grouting pile right below a certain section of tunnel, and specifically constructing the pile by the following steps:
firstly, a rotating seat is driven to rotate by a rotating seat rotating executing mechanism, so that a support tower rod and a rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in a vertical state;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine directly drills holes downwards vertically in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable the high-pressure rotary spraying holes to drill into a set depth;
then, directly utilizing the jet grouting drill rod to perform high-pressure jet grouting, so that vertically distributed vertical high-pressure jet grouting piles are formed right below the inner wall of the tunnel, and the tunnel is supported through the vertical high-pressure jet grouting piles; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel;
thirdly, performing secondary filtration; returning to the second step until the construction of the vertical high-pressure jet grouting pile below the section of the tunnel is completed;
thirdly, constructing a right-inclined high-pressure rotary spraying pile at the right lower part of a certain section of tunnel, wherein the right-inclined high-pressure rotary spraying pile and the vertical high-pressure rotary spraying pile are positioned below the same section of tunnel; the concrete construction steps are as follows:
the rotating seat is driven to rotate by the rotating seat rotating executing mechanism, so that the support tower rod and the rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate rightwards by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in an inclined state, and the inclined angle of the rotary spraying drill rod is 0-90 degrees;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine is used for directly drilling towards the lower right in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable a high-pressure rotary spraying hole to be drilled into a set depth;
then, directly utilizing the rotary spraying drill rod to perform high-pressure jet grouting, so that right-inclined high-pressure rotary spraying piles which are distributed in an inclined mode are formed on the right lower portion of the inner wall of the tunnel, and the tunnel is supported through the right-inclined high-pressure rotary spraying piles; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel;
thirdly, performing secondary filtration; returning to the second step until the construction of the right-inclined high-pressure jet grouting pile below the section of the tunnel is completed;
constructing a left inclined high-pressure jet grouting pile at the left lower part of a certain section of tunnel, wherein the left inclined high-pressure jet grouting pile and the vertical high-pressure jet grouting pile are positioned below the same section of tunnel; the concrete construction steps are as follows:
the rotating seat is driven to rotate by the rotating seat rotating executing mechanism, so that the support tower rod and the rotary spraying drill rod are positioned in a vertical plane; the support tower rod is driven to rotate leftwards by the tower rod rotation executing mechanism, so that the support tower rod and the rotary spraying drill rod are in an inclined state, and the inclined angle of the rotary spraying drill rod is 0-90 degrees;
secondly, a rotary spraying drill rod utilized by the high-pressure rotary spraying pile machine is used for directly drilling towards the lower left side in the tunnel, and the rotary spraying drill rod penetrates through the inner wall of the tunnel to enable a high-pressure rotary spraying hole to be drilled into a set depth;
then, directly utilizing the jet grouting drill rod to carry out high-pressure jet grouting, so that a tunnel forms a left-inclined high-pressure jet grouting pile which is obliquely distributed at the left lower part of the inner wall, and the tunnel is supported through the left-inclined high-pressure jet grouting pile; then lifting the jet grouting drill rod into the tunnel;
then, the high-pressure jet grouting pile machine runs for a set distance along the tunnel;
thirdly, performing secondary filtration; and returning to the second step until the construction of the left-inclined high-pressure jet grouting pile below the section of the tunnel is completed.
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| CN202010301375.7A CN111550182B (en) | 2020-04-16 | 2020-04-16 | Multi-angle cement-soil pile construction equipment in tunnel and tunnel reinforcing construction method |
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| CN202010301375.7A CN111550182B (en) | 2020-04-16 | 2020-04-16 | Multi-angle cement-soil pile construction equipment in tunnel and tunnel reinforcing construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114164834A (en) * | 2021-12-10 | 2022-03-11 | 山东省路桥集团有限公司 | Ultrahigh-pressure jet grouting pile machine and jet grouting pile construction method |
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