External subsidence reduction structure for key layer cascade grouting earth surface

Abstract

The utility model discloses an external subsidence reduction structure for a key layer step grouting ground surface, which comprises a subsidence reduction component which comprises an external frame arranged on the grouting ground surface, an internal frame arranged in the grouting ground surface and a support column body arranged between the external frame and the internal frame; supporting box bodies are arranged on the outer frame and the inner frame, a plurality of dispersing meshes are formed in the supporting box bodies, lifting pieces are arranged on the supporting column bodies, the supporting column bodies and the supporting box bodies are used for locking, and due to the fact that the supporting box bodies are combined to form an inverted halfpace shape, during pouring, the supporting box bodies are not prone to falling off during pouring; by means of the supporting column body, pouring grout attached to the supporting box body cannot slide down under the action of gravity, sedimentation is reduced, then the upper end of the supporting column body integrally has upward pulling force through the traction steel bar, and therefore the supporting column body jacks up the internal layer of the ground after grouting, and the influence of sedimentation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of surface settlement reduction, especially relates to a key layer gradient grouting surface external settlement reduction structure. BACKGROUND

[0002] At present, the most effective method to control the surface subsidence of coal mining is filling mining and overburden separation grouting. Compared with separation grouting, filling mining has high investment cost of filling pipeline system, filling equipment and filling material, therefore, the overburden separation grouting technology is paid more and more attention, especially under the severe situation of the overall profit decline of China's coal industry at present. The separation grouting technology also has two problems to be solved: first, due to the influence of mining, the movement of the overburden is a dynamic change process, the height and width of the separation layer are constantly changing with mining, therefore, it is difficult to grasp the position and timing of the separation grouting. Once the separation layer is closed in mining, the grouting work cannot continue, which reduces the total amount of grouting and does not achieve the expected effect in controlling the surface deformation.

[0003] After mining in the mining area, a goaf is left, the goaf is classified based on the overburden gap area, and is roughly divided into overburden broken angle and masonry beam structure (key layer), which needs to be grouted to avoid subsidence and settlement, but the existing grouting method is to directly grout after drilling, the grout has poor flowability in the drilling hole, the diffusion radius between the cracks between the masonry beam structures is small, a large number of drilling holes are needed, the efficiency is affected, and a large amount of gangue and other mine solid wastes are left during mining in the mining area, which cannot be effectively treated. SUMMARY

[0004] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the prior art key layer gradient grouting surface external settlement reduction structure, the utility model is proposed.

[0006] Therefore, the utility model aims to provide a key layer gradient grouting surface external settlement reduction structure.

[0007] To solve the above technical problems, the utility model provides technical scheme as follows: A kind of key layer gradient grouting ground is used to external settlement-reducing structure, including, settlement-reducing component, including being set on grouting ground outside frame, inside frame being set in grouting ground and support column body being set between outside frame and inside frame;And, support box body is set on the outside frame and inside frame, a plurality of dispersion mesh holes are set on the support box body, puller is set on the support column body.

[0008] As a preferred scheme of the key layer gradient grouting ground is used to external settlement-reducing structure of the utility model, wherein: the support box body includes first connecting plate being set on outside frame, second connecting plate being connected with first connecting plate hingedly, third connecting plate being hinged with second connecting plate and fourth connecting plate being hinged on third connecting plate, and the end of first connecting plate and third connecting plate away from second connecting plate is set as inclined plane, and connecting piece is arranged between first connecting plate, second connecting plate, third connecting plate and fourth connecting plate.

[0009] As a preferred scheme of the key layer gradient grouting ground is used to external settlement-reducing structure of the utility model, wherein: the connecting piece includes connecting clamping plate being set on first connecting plate, second connecting plate, third connecting plate and fourth connecting plate, first rotating ring being rotatably connected on connecting clamping plate, internal thread being opened in first rotating ring and intermediate connecting column being threadedly connected with internal thread, and the both ends of intermediate connecting column are provided with external thread, and connecting sphere is arranged on intermediate connecting column close to middle position.

[0010] As a preferred scheme of the key layer gradient grouting ground is used to external settlement-reducing structure of the utility model, wherein: first connecting plate, second connecting plate and third connecting plate are all provided with detachable ring plate, cooperating clamping groove cooperating with support column body is opened on the ring plate, and extension plate is arranged on fourth connecting plate, and recess is opened on the extension plate.

[0011] As a preferred scheme of the key layer gradient grouting ground is used to external settlement-reducing structure of the utility model, wherein: the support column body includes a plurality of connecting column bodies being set between outside frame and inside frame, and the a plurality of connecting column bodies are interconnected by bolt, one end of each connecting column body is provided with protruding ring, the other end is provided with flange plate cooperating with protruding ring, and the flange plate and protruding ring are connected by bolt.

[0012] As a preferred scheme of the key layer gradient grouting ground is used to external settlement-reducing structure of the utility model, wherein: the support column body is provided with upper end block close to one end of outside frame body.

[0013] As a preferred scheme of the external settlement reduction structure for the key layer stepped grouting ground surface of the utility model, wherein: the pulling member comprises a plurality of traction steel bars arranged on the outer frame and traction holes arranged on the upper end block and connected with the traction steel bars, and the traction steel bars are laid with cement layers after being connected with the upper end block.

[0014] As a preferred scheme of the external settlement reduction structure for the key layer stepped grouting ground surface of the utility model, wherein: the support box is formed into an inverted ladder after being spliced.

[0015] As a preferred scheme of the external settlement reduction structure for the key layer stepped grouting ground surface of the utility model, wherein: the upper end of the outer frame is provided with a support frame plate, the pulling member further comprises an upper connecting block arranged on the support frame plate, a rotating rod rotatably connected to the upper connecting block, a rotating support rotatably connected to the lower end of the rotating rod, and a clamping plate rotatably connected to the lower end of the rotating support, and the clamping plate is provided with connecting holes connected with the traction steel bars.

[0016] As a preferred scheme of the external settlement reduction structure for the key layer stepped grouting ground surface of the utility model, wherein: the support frame plate is provided with a motor for controlling the rotation of the upper connecting block.

[0017] The utility model discloses the beneficial effects: before grouting, the operator first installs the internal frame to the grouting ground inside, and then carries out the pre-fixing to the internal frame, after fixing, the operator inserts the plurality of support column to the internal frame, and then installs the plurality of support box to the support column according to certain rule, and utilizes the connecting piece to lock the support box, because the support box is combined and forms the inverted ladder, and then when pouring, the pouring slurry attached to the support box will not slide under the action of gravity, and the settlement is reduced.

[0018] Then the operator can install the external frame to the position above the grouting ground, then connect the support column with the external frame, after connecting, the steel bar is connected with the support column after winding through the traction hole, and the other end of the steel bar extends out from the external frame, thereby making the upper end of the support column have an upward pulling force as a whole, so that the support column lifts the internal layer of the grouting ground upward, reducing the influence of settlement. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor. Among them:

[0020] Figure 1 It is the whole structure side view schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0021] Figure 2 It is the whole structure side view schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0022] Figure 3 It is the support box body schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0023] Figure 4 It is the connecting piece section view schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0024] Figure 5 It is the support column body specific structure schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0025] Figure 6 It is the puller section view schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0026] Figure 7 It is the puller structure schematic diagram of the external settlement reducing structure for key layer step grouting ground surface of the utility model.

[0027] Among them, 100, settlement reducing assembly;101, external frame;102, internal frame;103, support column body;104, support box body;105, dispersion mesh hole;104a, first connecting plate;104b, second connecting plate;104c, third connecting plate;104d, fourth connecting plate;200, connecting piece;201, connecting clamping plate;202, first rotating ring;203, internal thread;204, intermediate connecting column;205, external thread;206, connecting sphere;300, ring plate;301, matched clamping groove;302, extension plate;303, groove;103a, connecting column body;103b, protruding ring;103c, flange;106, upper end block body;107, puller;107a, traction steel bar;107b, traction hole;400, support frame plate;401, upper connecting block;402, rotating rod;403, rotating support;404, clamping plate;405, connecting hole;406, motor. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described in detail below with the help of the drawings in the specification.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0031] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1

[0033] Reference Figures 1-7 This is the first embodiment of the present invention, which provides an external settlement reduction structure for key layer tiered grouting surface, including a settlement reduction component 100. In this embodiment, the settlement reduction component 100 includes an outer frame 101 disposed on the grouting surface, an inner frame 102 disposed inside the grouting surface, and a support column 103 disposed between the outer frame 101 and the inner frame 102. The outer frame 101 is generally inclined and laid outside the grouting surface, and the several outer frames 101 are generally trapezoidal, with the interior used for grouting.

[0034] Furthermore, the internal frame 102 is located at the bottom of the stepped grouting layer and is designed in a stepped shape for overall support strength.

[0035] Preferably, the internal frame 102 includes several base plates that are spliced ​​together, and the base plates are connected to each other by expansion bolts.

[0036] In this embodiment, the base plate includes a first connecting body, a second connecting body and a third connecting body connected to the first connecting body. The second connecting body and the third connecting body are spliced ​​together and connected to each other by bolts. At the same time, several bolt holes are provided on the side walls of the first connecting body, the second connecting body and the third connecting body to facilitate the insertion between the base plates.

[0037] Further, the support box 104 is arranged on the outer frame 101 and the inner frame 102, and a plurality of dispersion meshes 105 are arranged on the support box 104.

[0038] Further, in the embodiment, the support box 104 comprises a first connecting plate 104a arranged on the outer frame 101, a second connecting plate 104b hingedly connected with the first connecting plate 104a, a third connecting plate 104c hingedly connected with the second connecting plate 104b, and a fourth connecting plate 104d hingedly connected with the third connecting plate 104c, the first connecting plate 104a and the third connecting plate 104c are identical in shape and size, and are arranged as inclined surfaces at the ends away from the second connecting plate 104b, and a connecting piece 200 is arranged between the first connecting plate 104a, the second connecting plate 104b, the third connecting plate 104c and the fourth connecting plate 104d, when the operator assembles the support box 104, the operator rotates the first connecting plate 104a, the second connecting plate 104b, the third connecting plate 104c and the fourth connecting plate 104d, so that the fourth connecting plate 104d is connected with the side wall of the first connecting plate 104a.

[0039] Further, in the embodiment, the connecting piece 200 comprises a connecting clamping plate 404201 arranged on the first connecting plate 104a, the second connecting plate 104b, the third connecting plate 104c and the fourth connecting plate 104d, a first rotating ring 202 rotatably connected with the connecting clamping plate 404201, an internal thread 203 formed in the first rotating ring 202, and an intermediate connecting column 204 threadedly connected with the internal thread 203, the intermediate connecting column 204 is provided with external threads 205 at both ends, and a connecting ball 206 is arranged at the middle position of the intermediate connecting column 204.

[0040] As a preferred, the connecting piece 200 on the first connecting plate 104a and the connecting piece 200 on the second connecting plate 104b are arranged high and low, when to be installed, the intermediate connecting column 204 has been connected with the first rotating ring 202 on the second connecting plate 104b, and then when to be installed subsequently, the operator clamps the first connecting ring on the first connecting plate 104a to the upper end position of the intermediate connecting column 204, and then rotates the first connecting ring to be locked by the thread.

[0041] As a preferred, the first connecting plate 104a, the second connecting plate 104b and the third connecting plate 104c are all provided with a detachable ring plate 300, the ring plate 300 is provided with a matching clamping groove 301 matched with the support column 103, the fourth connecting plate 104d is provided with an extension plate 302, and the extension plate 302 is provided with a recess 303, and the matching clamping groove 301 and the recess 303 form a ring-shaped notch after being matched.

[0042] In the embodiment, the support column 103 comprises several connecting columns 103a arranged between the outer frame 101 and the inner frame 102, each of the connecting columns 103a is connected by bolts, a protruding ring 103b is arranged at one end of each of the connecting columns 103a, a flange plate 103c matched with the protruding ring 103b is arranged at the other end of each of the connecting columns 103a, and the flange plate 103c and the protruding ring 103b are connected by bolts.

[0043] Further, an upper end block 106 is arranged at one end of the support column 103 close to the outer frame, a pulling member 107 is arranged between the upper end block 106 and the outer frame, the upper end block 106 and the outer frame are connected, and the upper end block 106 and the outer frame are connected.

[0044] In the embodiment, the pulling member 107 comprises several traction steel bars 107a arranged on the outer frame and traction holes 107b arranged on the upper end block 106 and connected with the traction steel bars 107a, and a cement layer is laid after the traction steel bars 107a and the upper end block 106 are connected.

[0045] Preferably, the support box 104 is spliced to form an inverted ladder.

[0046] Further, a support frame plate 400 is arranged at the upper end of the outer frame 101, the pulling member 107 further comprises an upper connecting block 401 arranged on the support frame plate 400, a rotating rod 402 rotatably connected to the upper connecting block 401, a rotating support 403 rotatably connected to the lower end of the rotating rod 402, and a clamping plate 404 rotatably connected to the lower end of the rotating support 403, the clamping plate 404 is provided with connecting holes 405 connected with the traction steel bars 107a, and a motor 406 is arranged on the support frame plate 400 to control the rotation of the upper connecting block 401.

[0047] Preferably, the rotating rod 402 is arranged in three groups and arranged in a circumferential array on the upper connecting block 401, and the rotating support 403 comprises a cross arm hinged to the rotating rod 402, vertical rods connected to both ends of the cross arm, and a second cross arm connected to the lower ends of the two vertical rods, the second cross arm passes through the clamping plate 404, and each of the clamping plates 404 is provided with two connecting holes 405 corresponding to the upper end traction holes 107b of the upper end block 106.

[0048] Preferably, the operator can fix the clamping plate 404 to the upper end block 106 by bolts as needed.

[0049] The operation process is as follows: before grouting, the operator first installs the inner frame 102 to the inside of the grouting ground, then pre-fixes the inner frame 102, after fixing, the operator inserts a plurality of support column bodies 103 to the inner frame 102, then installs a plurality of support box bodies 104 to the support column bodies 103 according to certain rules, and locks the support box bodies 104 by using the connecting piece 200, because the support box bodies 104 are combined to form an inverted ladder shape, so that the grouting slurry attached to the support box bodies 104 will not slide downward under the action of gravity during pouring, thereby reducing the settlement.

[0050] Then the operator can install the outer frame 101 to the position above the grouting ground, then connects the support column bodies 103 with the outer frame 101, after connecting, the steel bars are wound around the traction hole 107b to realize the connection with the support column bodies 103, and the other end of the steel bars extends out from the outer frame 101, so that the upper end of the support column bodies 103 has an upward pulling force as a whole, so that the support column bodies 103 can lift the inner level of the grouting ground upward, thereby reducing the influence of settlement.

[0051] Importantly, it should be noted that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.). For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of discrete elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the generality of the application. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to particular embodiments described, but extends to any inventive subject matter within the scope of the claims.

[0052] Furthermore, in an effort to provide a concise description of exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the present inventive subject matter, or those unrelated to enabling the claimed application).

[0053] It is to be understood that the development making of the numerous implementation decisions during the development of any embodiment is a design choice. These development efforts would be evolutionary unless otherwise decided by practice, experimentation and experience.

[0054] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and all modifications or equivalent replacements should be included in the scope of the claims of the present application.

Claims

1. A key stratum step grouting ground surface external settlement reducing structure, characterized by: The utility model relates to a kind of injection reduction components, including the outer frame (101) being arranged on the grouting surface, the inner frame (102) being arranged in the grouting surface and the support column (103) being arranged between the outer frame (101) and the inner frame (102);And, The outer frame (101) and the inner frame (102) are provided with support box (104), the support box (104) is provided with several dispersion mesh (105), and the support column (103) is provided with lifting part (107). The support box (104) includes first connecting plate (104a) arranged on the outer frame (101), second connecting plate (104b) hingedly connected with the first connecting plate (104a), third connecting plate (104c) hingedly connected with the second connecting plate (104b) and fourth connecting plate (104d) hingedly connected on the third connecting plate (104c), and the first connecting plate (104a) and the third connecting plate (104c) are arranged as inclined surfaces at one end away from the second connecting plate (104b), and connecting piece (200) is arranged between the first connecting plate (104a), the second connecting plate (104b), the third connecting plate (104c) and the fourth connecting plate (104d).

2. The key layer step grouting ground surface external settlement reducing structure according to claim 1, characterized in that: The connecting piece (200) includes connecting card plate (404) (201) arranged on the first connecting plate (104a), the second connecting plate (104b), the third connecting plate (104c) and the fourth connecting plate (104d), first rotating ring (202) rotatably connected on the connecting card plate (404) (201), internal thread (203) formed in the first rotating ring (202) and intermediate connecting column (204) threadedly connected with the internal thread (203), and the intermediate connecting column (204) is provided with external thread (205) at both ends, and the intermediate connecting column (204) is provided with connecting ball (206) close to the middle position.

3. The key layer step grouting ground surface external settlement reducing structure according to claim 2, characterized in that: The first connecting plate (104a), the second connecting plate (104b) and the third connecting plate (104c) are provided with detachable ring plate (300), the ring plate (300) is provided with matching clamping groove (301) matched with the support column (103), the fourth connecting plate (104d) is provided with extension plate (302), and the extension plate (302) is provided with recess (303).

4. The key layer step grouting ground surface external settlement reducing structure according to claim 2, characterized in that: The support column (103) includes a plurality of connecting columns (103a) arranged between the outer frame (101) and the inner frame (102), the plurality of connecting columns (103a) are interconnected by bolts, one end of each connecting column (103a) is provided with a protruding ring (103b), the other end is provided with a flange (103c) matched with the protruding ring (103b), and the flange (103c) and the protruding ring (103b) are connected by bolts.

5. The key layer step grouting ground surface external settlement reducing structure according to claim 4, characterized in that: The support column (103) is provided with an upper end block (106) close to one end of the outer frame.

6. The key layer step grouting ground surface external settlement reducing structure according to claim 5, characterized in that: ​ 7. The key layer step grouting ground surface external settlement reducing structure according to claim 6, characterized in that: The pulling member (107) comprises a plurality of traction steel bars (107a) arranged on the outer frame and traction holes (107b) arranged on the upper end block (106) and connected with the traction steel bars (107a), and the traction steel bars (107a) are laid with cement after being connected with the upper end block (106).

8. The key layer step grouting ground surface external settlement reducing structure according to claim 1, characterized in that: The support box (104) is connected to form an inverted ladder shape.

9. The key layer step grouting ground surface external settlement reducing structure according to claim 1, characterized in that: The outer frame (101) is provided with a support frame plate (400) at the upper end, the pulling member (107) further comprises an upper connecting block (401) arranged on the support frame plate (400), a rotating rod (402) rotatably connected to the upper connecting block (401), a rotating support (403) rotatably connected to the lower end of the rotating rod (402), and a clamping plate (404) rotatably connected to the lower end of the rotating support (403), and the clamping plate (404) is provided with connecting holes (405) connected with the traction steel bars (107a).

10. The key layer step grouting ground surface external settlement reducing structure according to claim 9, characterized in that: The support frame plate (400) is provided with a motor (406) for controlling the rotation of the upper connecting block (401).

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