CN114482080B - Construction equipment of construction process is backfilled to hidden karst cave earthwork - Google Patents
Construction equipment of construction process is backfilled to hidden karst cave earthwork Download PDFInfo
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- CN114482080B CN114482080B CN202210097133.XA CN202210097133A CN114482080B CN 114482080 B CN114482080 B CN 114482080B CN 202210097133 A CN202210097133 A CN 202210097133A CN 114482080 B CN114482080 B CN 114482080B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4203—Details; Accessories
- B28C5/4234—Charge or discharge systems therefor
- B28C5/4244—Discharging; Concrete conveyor means, chutes or spouts therefor
- B28C5/4258—Discharging; Concrete conveyor means, chutes or spouts therefor using pumps or transporting screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
- B28C5/4282—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport with moving mixing tools in a stationary container
- B28C5/4289—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport with moving mixing tools in a stationary container with stirrers rotating about a vertical axis
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction process for backfilling earthwork of a hidden karst cave, which comprises the following steps: step (1): performing construction investigation before construction of the hidden karst cave; step (2): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is less than or equal to 2m, adopting a backfilling broken stone mode to treat the hidden karst cave; step (3): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, high-pressure pouring low-grade concrete treatment is performed on unfilled or semi-filled type cave bodies by adopting construction equipment after stirring on the ground; step (4): and (3) on the basis of finishing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, performing construction treatment on all filled cave bodies by adopting a dynamic compaction method. Compared with other treatment processes such as reinforced concrete beam pouring and beam slab crossing at the upper part of the karst cave, the construction process for backfilling the earthwork of the hidden karst cave has the advantages of low cost, good stability, environment protection and the like.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to construction equipment for a hidden karst cave earthwork backfill construction process.
Background
In the existing high-fill airports, the fill bodies of the high-fill airports of nine villages and Lv Liangdeng are mainly made of soil materials, the original foundation is relatively uniform, the topography of the field of the Guiyang Dragon hole fort airport is greatly fluctuated, the original foundation is in karst geology, the original ground is unstable, and the earthwork engineering is mainly made of stones. Meanwhile, the karst development of the investigation region has the characteristics of mainly vertical development and less horizontal development. The karst mainly comprises a vertical downhole, a funnel, an erosion slit zone (or referred to as a large karst cave), a solution groove and a solution slit. Through qualitative analysis, most karst cave roof is unstable, and under the action of dynamic compaction construction and filling load, the karst roof is likely to collapse. Aiming at different filling states in the hidden karst cave, the treatment process is different.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to at least partially solve the problems, the invention provides a construction process for backfilling earthwork of a hidden karst cave, which comprises the following steps:
step (1): performing construction investigation before construction of the hidden karst cave;
step (2): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is less than or equal to 2m, adopting a backfilling broken stone mode to treat the hidden karst cave;
step (3): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, high-pressure pouring low-grade concrete treatment is performed on unfilled or semi-filled type cave bodies by adopting construction equipment after stirring on the ground;
step (4): and (3) on the basis of finishing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, performing construction treatment on all filled cave bodies by adopting a dynamic compaction method.
According to the construction process for backfilling the earthwork of the hidden karst cave, the design requirements of the filling of low-grade concrete in the step (3) for treating the unfilled or semi-filled cave body are as follows: the mixture is stirred into low-grade concrete in advance on the ground by using construction equipment, and then is injected into the hidden hole body by using a high-pressure concrete pump through a drill hole, so that the filling and diffusion range is large, and the filling is easy to compact.
According to the construction process for backfilling the earthwork of the hidden karst cave, the specific process flow in the step (3) comprises the following steps of construction lofting, investigation and rechecking, clearing of a surface soil covering on the top of the karst cave, drilling, pouring of low-grade concrete, backfilling of broken stone and compaction by rolling.
According to the embodiment of the invention, the construction process for backfilling the earthwork of the hidden karst cave comprises the following main points: and (3) carrying out construction lofting on the karst cave in the area according to the design drawing, carrying out reconnaissance by a geological exploration unit, and rechecking karst cave information, and determining the information of karst cave filling type, cave body volume, cave length and cave depth so as to determine a hidden karst cave processing method and a karst cave volume square quantity.
The invention provides construction equipment of a hidden karst cave earthwork backfill construction process, which comprises the following steps: the concrete production device comprises a concrete stirring station, a concrete pump truck and a concrete conveying part, wherein the concrete stirring station is used for stirring and mixing cement, fly ash, sand and fine stone into low-grade concrete, the concrete pump truck is used for conveying the low-grade concrete to the concrete conveying part, and the concrete conveying part is used for injecting the concrete into a hidden karst cave under high pressure.
According to the construction equipment for the hidden karst cave earthwork backfill construction process, the concrete conveying part comprises a concrete moving conveying vehicle, a hopper bin, a high-pressure concrete pump and a guide cylinder are arranged on the concrete moving conveying vehicle, the high-pressure concrete pump is arranged at the outer end of the hopper bin, the guide cylinder is connected with a discharge cylinder of the high-pressure concrete pump, and the guide cylinder can extend into a drilling hole to inject concrete into the hidden karst cave.
According to the construction equipment for the hidden karst cave earthwork backfilling construction process, the hopper bin is provided with the stirring mechanism, the stirring mechanism comprises the stirring motor, the speed reducer, the first stirring shaft part, the second stirring shaft part and the third stirring shaft part, the speed reducer is arranged at the upper end of the hopper bin, the stirring motor is arranged on the speed reducer and is in rotary connection with the speed reducer, the first stirring shaft part, the second stirring shaft part and the third stirring shaft part are uniformly distributed in the hopper bin, and the first stirring shaft part, the second stirring shaft part and the third stirring shaft part are all in rotary connection with the speed reducer.
According to the construction equipment for the hidden karst cave earthwork backfilling construction process, the discharging barrel of the high-pressure concrete pump is provided with the discharging mechanism, the discharging mechanism is detachably connected with the discharging barrel, the discharging mechanism comprises a discharging fixing seat, a first locking mechanism, a second locking mechanism and a supporting mechanism, the discharging fixing seat is arranged on the concrete moving and conveying vehicle, transverse fin plates are respectively arranged on two sides of the discharging fixing seat, the transverse fin plates are arranged on the concrete moving and conveying vehicle through a plurality of first locking mechanisms, the supporting mechanism is arranged on the discharging fixing seat, two second locking mechanisms are arranged and fix the discharging barrel with the supporting mechanism, two first vertical holes are formed in the middle of the upper end of the discharging fixing seat, the supporting mechanism comprises two first vertical springs, two vertical supporting rods and two first C-shaped supporting plates, the first vertical springs are arranged in the first vertical holes, the lower ends of the vertical supporting rods are positioned in the first vertical holes and are connected with the first vertical springs, the first C-shaped supporting rods are hinged to the first C-shaped supporting plates, and the first C-shaped supporting plates are hinged to the first C-shaped supporting plates.
According to the construction equipment for the construction process for the hidden karst cave earthwork backfill, the second locking mechanism comprises a vertical buckle plate, a second C-shaped support plate, an inner winch, an inner driven wheel and stranded wires, two second vertical holes are formed in the discharging fixing seat, the vertical buckle plate is arranged in the second vertical holes, the inner driven wheel is arranged at the bottom of the second vertical holes, the inner winch is arranged at the inner bottom of the discharging fixing seat, the inner winch is connected with the bottom of the vertical buckle plate through the stranded wires, the second C-shaped support plate is arranged at the upper end of the vertical buckle plate and abuts against the discharging cylinder, a second abrasion-resistant layer is arranged on the inner wall of the second C-shaped support plate, a first locking sloping plate is arranged on one of the second C-shaped support plates, a third vertical hole and a first locking groove are formed in the first locking plate, a third vertical locking groove is formed in the third vertical locking hole, a locking rod is arranged in the third vertical locking groove, a locking rod is arranged in the second locking groove, and a locking rod is in the locking groove, and a locking groove is in the locking groove, and the locking groove is in the locking groove.
According to the construction equipment for the construction process for the earthwork backfill of the hidden karst cave, the first locking mechanism comprises a vertical locking cylinder, a screw rod, a third vertical spring, a pressing cone block and two transverse cone blocks, a fourth vertical hole is formed in the transverse fin plate, the vertical locking cylinder penetrates through the fourth vertical hole, a protruding ring is arranged on the vertical locking cylinder, the lower end of the vertical locking cylinder extends into the fourth vertical hole of the concrete moving and conveying vehicle, two opposite holes are formed in the lower portion of the vertical locking cylinder, the screw rod, the third vertical spring, the pressing cone block and the two transverse cone blocks are arranged in the vertical locking cylinder, the screw rod abuts against the third vertical spring, the lower end of the pressing cone block abuts against the two transverse cone blocks, the two transverse cone blocks penetrate through the holes and extend into a locking inner annular groove of the fourth vertical hole, and a fourth spring is arranged between the two transverse cone blocks.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the invention provides a construction process for backfilling earthwork of a hidden karst cave, wherein the hidden karst cave adopts different treatment modes according to different burial depths and different top plate thicknesses, and the burial depths are treated by adopting a treatment process of explosion clearing and filling, dynamic compaction, stone protection layer, geotextile and stone protection layer. The method has the advantages that the buried depth is deeper, the karst cave is not filled or is partially filled, and a drilling and pouring high-pressure low-grade concrete treatment process is adopted. The burial depth is deeper, and the karst cave is filled completely, and a dynamic compaction treatment process is adopted; compared with other treatment processes such as reinforced concrete beam pouring and beam slab crossing at the upper part of the karst cave, the construction process for backfilling the earthwork of the hidden karst cave has the advantages of low cost, good stability, environment protection and the like.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a flow chart of the construction process of the present invention.
FIG. 2 is a flow chart of the concrete delivery process of the present invention.
FIG. 3 is a schematic view of the structure of the low-grade concrete injection of the hidden karst cave according to the present invention.
Fig. 4 is a schematic view of a concrete transporting portion according to the present invention.
Fig. 5 is a top view showing the structure of the stirring mechanism in the present invention.
Fig. 6 is a schematic structural view of a discharging mechanism in the invention.
Fig. 7 is a schematic structural diagram of a discharge fixing seat in the present invention.
Fig. 8 is a schematic structural view of a first locking swash plate according to the present invention.
Fig. 9 is a schematic structural view of the first locking mechanism in the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-9, the invention provides a construction process for backfilling earthwork of a hidden karst cave, which comprises the following steps:
step (1): performing construction investigation before construction of the hidden karst cave;
step (2): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is less than or equal to 2m, adopting a backfilling broken stone mode to treat the hidden karst cave;
step (3): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, high-pressure pouring low-grade concrete treatment is performed on unfilled or semi-filled type cave bodies by adopting construction equipment after stirring on the ground;
step (4): and (3) on the basis of finishing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, performing construction treatment on all filled cave bodies by adopting a dynamic compaction method.
The working principle and the beneficial effects of the technical scheme are as follows:
the invention provides a construction process for backfilling earthwork of a hidden karst cave, which comprises the following steps:
step (1), construction investigation is carried out before construction of the hidden karst cave; mainly find out the conditions of roof thickness, hole height, hole diameter, filling and the like of the hidden karst cave;
and (2) when the thickness of the top plate of the hidden karst cave is less than or equal to 2m after the step (1) is finished, the process flow is as follows: removing coverings such as karst cave top surface soil, blasting to break cave body top plate, removing sundries in cave body, filling broken stone in layers, dynamic compaction (two-time point compaction and one-time full compaction), backfilling broken stone and compaction by rolling.
Specifically, when the thickness of the top of the hidden karst cave is less than or equal to 2m, the hidden karst cave is treated by adopting an explosion-clearing and filling-replacing method. Firstly, removing a hole body covering layer, crushing a hole body top plate by adopting a blasting method, removing broken materials of the top plate and filling materials in the hole body, and performing dynamic compaction by layered backfilling blocks of broken stone; wherein, the dynamic compaction is carried out by adopting 3000 kN.m-level single-click impact energy.
Step (3): when the thickness of the top plate of the hidden karst cave is more than 2m and the cave body is not filled or is partially filled, the process flow is as follows: removing covering materials such as karst cave top surface soil, drilling, pouring low-grade concrete, backfilling broken stone and compacting by rolling.
Specifically, the conditions such as the thickness of the roof, the height of the cavity, the diameter of the cavity, the filling state and the like of the cavity body should be ascertained. For unfilled or partially filled treatment modes adopting drilling to pour high-pressure low-grade concrete. That is, on the basis of completing the step (1), for the unfilled or semi-filled type of tunnel body, the low-grade concrete is poured at high pressure after the ground is stirred by using the construction equipment;
step (4): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, performing construction treatment on all filled cave bodies by adopting a dynamic compaction method; specifically, the energy level dynamic compaction treatment is adopted for the hole top with the burial depth of 2m-8m at 3000 kN.m, and the energy level dynamic compaction treatment is adopted for the hole top with the burial depth of more than 8m at 4000 kN.m.
Further, the design requirements of the filling of the low-grade concrete in the step (3) for treating the unfilled or semi-filled cavity are as follows: the mixture is stirred into low-grade concrete in advance on the ground by using construction equipment, and then is injected into the hidden hole body by using a high-pressure concrete pump through a drill hole, so that the filling and diffusion range is large, and the filling is easy to compact.
Further, the concrete process flow in the step (3) comprises the following steps of construction lofting, investigation and rechecking, clearing of karst cave top surface soil covering, drilling, pouring of low-grade concrete, backfilling of broken stone and compaction by rolling.
Further, the construction lofting has the following key points: and (3) carrying out construction lofting on the karst cave in the area according to the design drawing, carrying out reconnaissance by a geological exploration unit, and rechecking karst cave information, and determining the information of karst cave filling type, cave body volume, cave length and cave depth so as to determine a hidden karst cave processing method and a karst cave volume square quantity.
According to the construction process for backfilling the earthwork of the hidden karst cave, the hidden karst cave adopts different treatment modes according to different burial depths and different top plate thicknesses, wherein the burial depths are treated by adopting the treatment process of explosion clearing and filling, dynamic compaction, stone protection layer, geotextile and stone protection layer. The method has the advantages that the buried depth is deeper, the karst cave is not filled or is partially filled, and a drilling and pouring high-pressure low-grade concrete treatment process is adopted. The burial depth is deeper, and the karst cave is filled completely, and a dynamic compaction treatment process is adopted; compared with other treatment processes such as reinforced concrete beam pouring and beam slab crossing at the upper part of the karst cave, the construction process for backfilling the earthwork of the hidden karst cave has the advantages of low cost, good stability, environment protection and the like.
The invention also provides construction equipment of the hidden karst cave earthwork backfill construction process, which comprises a concrete production device, wherein the concrete production device comprises a concrete stirring station, a concrete pump truck and a concrete conveying part 10, the concrete stirring station is used for stirring and mixing cement, fly ash, sand and fine stone into low-grade concrete, the concrete pump truck is used for conveying the low-grade concrete to the concrete conveying part 10, and the concrete conveying part 10 is used for injecting the concrete into the hidden karst cave under high pressure.
The working principle and the beneficial effects of the technical scheme are as follows: the invention also provides construction equipment of the construction process for backfilling the earthwork of the hidden karst cave, which comprises a concrete production device, wherein the concrete production device comprises a concrete stirring station, a concrete pump truck and a concrete conveying part 10, the concrete stirring station is used for stirring and mixing cement, fly ash, sand and fine stone into low-grade concrete, then the concrete pump truck is used for conveying the low-grade concrete to the concrete conveying part 10, and then the concrete conveying part 10 is used for injecting the concrete into the hidden karst cave under high pressure, so that the low-grade concrete is injected into the hidden karst cave under high pressure through the construction equipment, and the subsequent operation is facilitated.
In one embodiment, the concrete conveying part 10 includes a concrete moving truck 20, a hopper 30, a high-pressure concrete pump 40 and a guide cylinder 50 are disposed on the concrete moving truck 20, the high-pressure concrete pump 40 is disposed at the outer end of the hopper 30, the guide cylinder 50 is connected with a discharge cylinder 41 of the high-pressure concrete pump 40, and the guide cylinder 50 can extend into a borehole to inject concrete into a hidden karst cave.
The working principle and the beneficial effects of the technical scheme are as follows: in this embodiment, a concrete structure of the concrete conveying part 10 is provided, the concrete conveying part 10 of the concrete structure includes a concrete moving and conveying truck 20, where the concrete moving and conveying truck 20 is used for loading low-grade concrete, specifically, a hopper 30, a high-pressure concrete pump 40 and a guide cylinder 50 are installed on the concrete moving and conveying truck 20, the high-pressure concrete pump 40 is installed at the outer end of the hopper 30, the guide cylinder 50 is connected with a discharge cylinder 41 of the high-pressure concrete pump 40, and the guide cylinder 50 can extend into a borehole to inject concrete into a hidden karst cave; it will be appreciated that the concrete mobile carrier 20 has a cab, and a constructor controls the high-pressure concrete pump 40 in the cab, the concrete pump truck carries low-grade concrete into the hopper bin 30, then the low-grade concrete is in the hopper bin 30, the high-pressure concrete pump 40 is started, and the high-pressure concrete pump 40 injects the low-grade concrete into the hidden karst cave through the discharging barrel 41 and the guiding barrel 50. The concrete transporting portion 10 can be moved easily, and the low-grade concrete is poured into the plurality of holes in sequence.
In one embodiment, the hopper bin 30 is provided with a stirring mechanism 31, the stirring mechanism 31 includes a stirring motor 311, a speed reducer 312, a first stirring shaft 313, a second stirring shaft 314, and a third stirring shaft 315, the speed reducer 312 is disposed at an upper end of the hopper bin 30, the stirring motor 311 is disposed on the speed reducer 312 and is rotationally connected to the speed reducer 312, the first stirring shaft 313, the second stirring shaft 314, and the third stirring shaft 315 are uniformly disposed in the hopper bin 30, and the first stirring shaft 313, the second stirring shaft 314, and the third stirring shaft 315 are rotationally connected to the speed reducer 312.
The working principle and the beneficial effects of the technical scheme are as follows: in the present embodiment, a stirring mechanism 31 is disposed in the hopper bin 30, and the low-grade concrete is prevented from being solidified by the stirring mechanism 31; specifically, the stirring mechanism 31 includes a stirring motor 311, a speed reducer 312, a first stirring shaft 313, a second stirring shaft 314, and a third stirring shaft 315, where the speed reducer 312 is mounted at the upper end of the hopper 30, the stirring motor 311 is mounted on the speed reducer 312 and is rotationally connected to the speed reducer 312, the first stirring shaft 313, the second stirring shaft 314, and the third stirring shaft 315 are uniformly mounted in the hopper 30, and the first stirring shaft 313, the second stirring shaft 314, and the third stirring shaft 315 are rotationally connected to the speed reducer 312, it is understood that the first stirring shaft 313, the second stirring shaft 314, and the third stirring shaft 315 each have a vertical stirring shaft, a plurality of stirring fins, here, the stirring fins in the first stirring shaft 313, the second stirring shaft 314 and the third stirring shaft 315 are staggered, so that the stirring motor 311 is started to drive the speed reducer 312 to rotate, the speed reducer 312 drives the first stirring shaft 313, the second stirring shaft 314 and the third stirring shaft 315, the first stirring shaft 313, the second stirring shaft 314 and the third stirring shaft 315 stir and rotate the low-grade concrete in the hopper bin 30, and the first stirring shaft 313, the second stirring shaft 314 and the third stirring shaft 315 are uniformly distributed in the hopper bin 30, so that the stirring of the low-grade concrete is more uniform, and the quality of the low-grade concrete is improved.
In one embodiment, the discharging cylinder 41 of the high-pressure concrete pump 40 is provided with a discharging mechanism 60, the discharging mechanism 60 is detachably connected with the discharging cylinder 41, the discharging mechanism 60 comprises a discharging fixing seat 601, a first locking mechanism, a second locking mechanism and a supporting mechanism, the discharging fixing seat 601 is arranged on the concrete moving and conveying vehicle 20, two sides of the discharging fixing seat 601 are respectively provided with a transverse fin plate 602, the transverse fin plates 602 are arranged on the concrete moving and conveying vehicle 20 through a plurality of first locking mechanisms, the supporting mechanism is arranged on the discharging fixing seat 601, the second locking mechanism is provided with two first vertical holes 603 and is fixed with the supporting mechanism, the middle of the upper end of the discharging fixing seat 601 is provided with two first vertical springs 604, two vertical support rods 605 and two first C-shaped support plates 605, the first vertical springs 604 are arranged inside the first vertical holes 603, the lower ends of the vertical springs 605 are positioned in the first vertical support rods 606 and are connected with the first C-shaped support plates 606, and the first C-shaped support plates 605 are arranged on the first C-shaped support plates.
The working principle and the beneficial effects of the technical scheme are as follows: in the embodiment, a discharging mechanism 60 is arranged at one side of the high-pressure concrete pump 40, the discharging mechanism 60 is fixedly provided with a discharging cylinder 41, so that the discharging cylinder 41 is prevented from being influenced by vibration generated in the working process of the high-pressure concrete pump 40, and the effect of reducing the vibration is achieved; specifically, the discharging mechanism 60 includes a discharging fixing seat 601, a first locking mechanism, a second locking mechanism and a supporting mechanism, where two sides of the discharging fixing seat 601 are respectively provided with a transverse fin 602, the transverse fin 602 fixes the discharging fixing seat 601 on the concrete mobile carrier 20 through a plurality of first locking mechanisms, the supporting mechanism is installed at the upper end of the discharging fixing seat 601, two second locking mechanisms cooperate with the supporting mechanism to jointly fix the discharging cylinder 41 on the discharging fixing seat 601, the supporting mechanism includes two first vertical springs 604, two vertical struts 605 and two first C-shaped supporting plates 606, two first vertical holes 603 are opened in the middle of the upper end of the discharging fixing seat 601, the first vertical springs 604 and the vertical struts 605 are installed in the first vertical holes 603, the lower end of the vertical struts 605 is extruded with the first vertical springs 604, the first vertical struts 605 are supported upwards by the first vertical struts 605, meanwhile, the two first C-shaped supporting plates 606 are hinged with each other, and the first C-shaped supporting plates 607 are installed with the first C-shaped supporting plates 606, so that the wear-resisting part of the discharging cylinder 41 is prevented from being damaged by the outer wall 41; the two second locking mechanisms are arranged at the upper part of the discharging cylinder 41 and fix the discharging cylinder 41; the supporting mechanism plays a good supporting role on the discharging cylinder 41, and the two second locking mechanisms and the supporting mechanism can also fix the discharging cylinders 41 with different sizes, so that the practicability of the discharging mechanism 60 is improved; it will be appreciated that the front end of the discharge barrel 41 is provided with a screw sleeve which connects the discharge barrel 41 and the guide barrel 50.
In one embodiment, the second locking mechanism includes a vertical pinch plate 608, a second C-shaped support plate 609, an inner winch 610, an inner driven wheel 611 and a stranded wire 612, two second vertical holes 613 are provided on the discharging fixing seat 601, the vertical pinch plate 608 is provided in the second vertical holes 613, the inner driven wheel 611 is provided at the bottom of the second vertical holes 613, the inner winch 610 is provided at the inner bottom of the discharging fixing seat 601, and the inner winch 610 is connected with the bottom of the vertical pinch plate 608 through the stranded wire 612, the second C-shaped support plate 609 is provided at the upper end of the vertical pinch plate 608 and abuts against the discharging cylinder 41, a second wear-resistant layer 614 is provided at the inner wall of the second C-shaped support plate 609, a first locking plate 615 is provided on one of the second C-shaped support plates 609, a third vertical hole 617, a first locking groove 618 is provided on the first locking plate 615, a third locking groove 620 is provided in the third locking plate 610, a third locking groove 620 is provided in the second locking rod is provided at the second locking rod 620, and a third locking groove 619 is provided in the second locking rod 620 is provided at the second locking rod 619.
The working principle and the beneficial effects of the technical scheme are as follows: in this embodiment, a specific structure of a second locking mechanism is provided, where a second vertical buckle 608, a second C-shaped support plate 609, an inner winch 610, an inner driven wheel 611 and a stranded wire 612 are provided, specifically, two second vertical holes 613 are further formed on the discharging fixing seat 601, the two second vertical holes 613 are located at left and right sides of the two first vertical holes 603, the vertical buckle 608 is installed in the second vertical holes 613, the inner driven wheel 611 is installed at the bottom of the second vertical holes 613, and meanwhile, an inner winch 610 is provided at the bottom of the discharging fixing seat 601, it can be understood that the discharging fixing seat 601 has a rotating handle (not shown) for rotating the inner winch 610; after the discharging cylinder 41 is installed in the second locking mechanism, a constructor drives the inner winch 610 to rotate through a rotating handle, the inner winch 610 is used for winding stranded wires 612 on two sides, the stranded wires 612 are used for pulling the vertical buckle 608 downwards under the action of the inner driven wheel 611, the vertical buckle 608 moves downwards into the second vertical hole 613, the second C-shaped support plates 609 on the vertical buckle 608 also move downwards, the two second C-shaped support plates 609 are buckled close to each other, the two second C-shaped support plates 609 buckle the upper part of the discharging cylinder 41, and the inner wall of the second C-shaped support plates 609 are provided with the second wear-resisting layers 614, so that damage to the outer wall of the discharging cylinder 41 is avoided; one of the second C-shaped support plates 609 is provided with a first locking inclined plate 615, the other second C-shaped support plate 609 is provided with a second locking inclined plate 616, the first locking inclined plate 615 is provided with a third vertical hole 617 and a first locking groove 618, the movable locking rod 620 in the first locking groove 618 can be pushed out of the second locking groove 622 by pressing the vertical locking rod 619 in the third vertical hole 617 downwards, and after the vertical locking rod 619 is released, the third spring 621 in the first locking groove 618 pushes the movable locking rod 620 from the first locking groove 618 into the second locking groove 622, and then the movable locking rod 620 can be fixed to the second locking groove 622, so that the first locking inclined plate 615 and the second locking inclined plate 616 are mutually locked, and then the second locking mechanism and the supporting mechanism are matched to fix the discharging cylinder 41.
In one embodiment, the first locking mechanism comprises a vertical locking cylinder 623, a screw rod 624, a third vertical spring 625, a pressing down cone block 626 and two transverse cone blocks 627, a fourth vertical hole 628 is formed in the transverse fin 602, the vertical locking cylinder 623 is penetrated in the fourth vertical hole 628, a protruding ring 629 is formed in the vertical locking cylinder 623, the lower end of the vertical locking cylinder 623 extends into a fifth vertical hole 632 of the concrete moving and conveying truck 20, two opposite openings 630 are formed in the lower portion of the vertical locking cylinder 623, the screw rod 624, the third vertical spring 625, the pressing down cone block 626 and the two transverse cone blocks 627 are arranged in the vertical locking cylinder 623, and the screw rod 624 abuts against the third vertical spring 625, so that the lower end of the pressing down cone block 626 abuts against the two transverse cone blocks 627, extend into the fifth vertical hole 632 through the openings 630, and a fourth annular groove 627 is formed between the two transverse cone blocks 631.
The working principle and the beneficial effects of the technical scheme are as follows: in this embodiment, a specific structure of the first locking mechanism is provided, the first locking mechanism of the structure includes a vertical locking barrel 623, a screw 624, a third vertical spring 625, a pressing cone block 626 and two transverse cone blocks 627, specifically, a fourth vertical hole 628 is formed on the transverse fin plate 602, the vertical locking barrel 623 is arranged in the fourth vertical hole 628 in a penetrating manner, a protruding ring 629 is arranged on the vertical locking barrel 623, correspondingly, a concave ring is arranged in the fourth vertical hole 628, the lower end of the vertical locking barrel 623 extends into a fifth vertical hole 632 of the concrete moving truck 20, then when the first locking mechanism is fixed, a constructor can rotate the screw 624, and then the screw 624 moves towards the inside of the vertical locking barrel 623, the screw 624 extrudes the third vertical spring 625, so that the third vertical spring 625 pushes the pressing cone block 626 downward, it can be understood that the pressing cone block 626 has a "tip" with two wedge faces, correspondingly, the transverse cone block 627 also has a corresponding wedge face, the pressing cone block 626 pushes the transverse cone block 627 outward, the transverse cone block 627 moves outward to the locking inner ring groove of the fifth vertical hole 632 through the opening 630, so that the first locking mechanism is fixed on the concrete moving truck 20, and since the third vertical spring 625 is arranged in the first locking mechanism, the third vertical spring 625 always has upward elastic force on the screw 624, the screw 624 does not rotate circumferentially and is loosened, and the firmness of the first locking mechanism is provided; the vertical locking cylinder 623 protects the screw 624, the third vertical spring 625, the pressing cone block 626 and the two transverse cone blocks 627, and also improves the service life of the first locking mechanism.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. The construction equipment of a hidden karst cave earthwork backfill construction technology is characterized by comprising:
step (1): performing construction investigation before construction of the hidden karst cave;
step (2): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is less than or equal to 2m, adopting a backfilling broken stone mode to treat the hidden karst cave;
step (3): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, high-pressure pouring low-grade concrete treatment is performed on unfilled or semi-filled type cave bodies by adopting construction equipment after stirring on the ground;
step (4): on the basis of completing the step (1), when the thickness of the top plate of the hidden karst cave is more than 2m, performing construction treatment on all filled cave bodies by adopting a dynamic compaction method;
the construction equipment of the construction process is used for backfilling the earthwork of the hidden karst cave, and the construction equipment comprises:
the concrete production device comprises a concrete stirring station, a concrete pump truck and a concrete conveying part (10), wherein the concrete stirring station is used for stirring and mixing cement, fly ash, sand and fine stone into low-grade concrete, the concrete pump truck is used for conveying the low-grade concrete to the concrete conveying part (10), and the concrete conveying part (10) is used for injecting the concrete into a hidden karst cave under high pressure;
the concrete conveying part (10) comprises a concrete moving conveying vehicle (20), a hopper bin (30), a high-pressure concrete pump (40) and a guide cylinder (50) are arranged on the concrete moving conveying vehicle (20), the high-pressure concrete pump (40) is arranged at the outer end of the hopper bin (30), the guide cylinder (50) is connected with a discharging cylinder (41) of the high-pressure concrete pump (40), and the guide cylinder (50) can extend into a borehole to inject concrete into a hidden karst cave
The discharging mechanism (60) is detachably connected with the discharging cylinder (41), the discharging mechanism (60) comprises a discharging fixing seat (601), a first locking mechanism, a second locking mechanism and a supporting mechanism, the discharging fixing seat (601) is arranged on the concrete moving and conveying vehicle (20), transverse fin plates (602) are respectively arranged on two sides of the discharging fixing seat (601), the transverse fin plates (602) are arranged on the concrete moving and conveying vehicle (20) through a plurality of first locking mechanisms, the supporting mechanism is arranged on the discharging fixing seat (601), two second locking mechanisms are arranged and fix the discharging cylinder (41) with the supporting mechanism, two first vertical holes (603) are formed in the middle of the upper end of the discharging fixing seat (601), the supporting mechanism comprises two first vertical springs (604), two vertical support rods (605) and two first C-shaped support plates (606), the first vertical support rods (605) are arranged at the upper ends of the first vertical support rods (605) and are arranged at the upper ends of the first vertical support rods (605) in the vertical holes (603), the two first C-shaped support plates (606) are hinged, and a first wear-resistant layer (607) is arranged on the upper surface of each first C-shaped support plate (606);
the second locking mechanism comprises a vertical buckle plate (608), a second C-shaped support plate (609), an inner winch (610), an inner driven wheel (611) and stranded wires (612), two second vertical holes (613) are formed in the discharging fixed seat (601), the vertical buckle plate (608) is arranged in the second vertical holes (613), the inner driven wheel (611) is arranged at the bottom of the second vertical holes (613), the inner winch (610) is arranged at the inner bottom of the discharging fixed seat (601), the inner winch (610) is connected with the bottom of the vertical buckle plate (608) through stranded wires (612), the second C-shaped support plate (609) is arranged at the upper end of the vertical buckle plate (608) and abuts against the discharging cylinder (41), a first inclined plate (615) is arranged on one of the second C-shaped support plates (609), a third inclined plate (617) is arranged in the second vertical buckle plate (609), a third vertical buckle hole (616) is formed in the second inclined plate (609), the movable lock rod (620) and a third spring (621) supporting the movable lock rod (620) are arranged in the first locking groove (618), the lower end of the vertical lock rod (619) abuts against the movable lock rod (620), and a second locking groove (622) corresponding to the movable lock rod (620) is arranged on the second locking inclined plate (616).
2. The construction equipment for the hidden karst cave earthwork backfill construction process according to claim 1, wherein the design requirements of the filling of low-grade concrete in the step (3) to treat the unfilled or semi-filled cave body are as follows:
the mixture is stirred into low-grade concrete in advance on the ground by using construction equipment, and then is injected into the hidden hole body by using a high-pressure concrete pump through a drill hole, so that the filling and diffusion range is large, and the filling is easy to compact.
3. The construction equipment of the hidden karst cave earthwork backfill construction process according to claim 1, wherein the specific process flow in the step (3) is as follows, construction lofting, investigation and rechecking, clearing of karst cave top surface soil covering, drilling, pouring of low-grade concrete, backfilling of broken stone and compaction by rolling.
4. A construction equipment for a hidden karst cave earthwork backfill construction process according to claim 3, characterized in that the construction lofting points are as follows: and (3) carrying out construction lofting on the karst cave in the area according to the design drawing, carrying out reconnaissance by a geological exploration unit, and rechecking karst cave information, and determining the information of karst cave filling type, cave body volume, cave length and cave depth so as to determine a hidden karst cave processing method and a karst cave volume square quantity.
5. The construction equipment of a hidden karst cave earthwork backfilling construction process according to claim 1, characterized in that the hopper bin (30) is provided with a stirring mechanism (31), the stirring mechanism (31) comprises a stirring motor (311), a speed reducer (312), a first stirring shaft (313), a second stirring shaft (314) and a third stirring shaft (315), the speed reducer (312) is arranged at the upper end of the hopper bin (30), the stirring motor (311) is arranged on the speed reducer (312) and is rotationally connected with the speed reducer (312), the first stirring shaft (313), the second stirring shaft (314) and the third stirring shaft (315) are uniformly arranged in the hopper bin (30), and the first stirring shaft (313), the second stirring shaft (314) and the third stirring shaft (315) are rotationally connected with the speed reducer (312).
6. The construction equipment of a hidden karst cave earthwork backfill construction process according to claim 1, characterized in that the first locking mechanism comprises a vertical locking barrel (623), a screw rod (624), a third vertical spring (625), a pressing down cone block (626) and two transverse cone blocks (627), a fourth vertical hole (628) is arranged on the transverse fin plate (602), the vertical locking barrel (623) is penetrated in the fourth vertical hole (628), a protruding ring (629) is arranged on the vertical locking barrel (623), the lower end of the vertical locking barrel (623) extends into a fifth vertical hole (632) of the concrete movement conveyor vehicle (20), two opposite openings (630) are arranged at the lower part of the vertical locking barrel (623), the screw rod (624), the third vertical spring (625), the pressing down cone block (626) and two transverse cone blocks (627) are arranged in the vertical locking barrel (623), and the screw rod (624) abuts against the vertical spring (625) so that the lower end of the third cone block (625) abuts against the opening (627) and the two opposite openings (627) extend into the fifth vertical hole (632).
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