CN217681788U

CN217681788U - Tunnel bottom plate target slip casting reinforced structure based on inorganic nano-material

Info

Publication number: CN217681788U
Application number: CN202222047267.9U
Authority: CN
Inventors: 刘超林; 孙波; 陈阳; 师尚红; 许阳; 朱锐
Original assignee: Information Research Institute Of Emergency Management Department
Current assignee: Information Research Institute Of Emergency Management Department
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-10-28
Anticipated expiration: 2032-08-04

Abstract

Discloses a roadway floor targeting grouting reinforcement structure based on inorganic nano materials, which comprises a groove body and grouting holes. Wherein, the cell body sets up on the bottom plate. The bottom plate has length direction and width direction, and a plurality of cell bodies are along length direction interval distribution. The tank body has relative diapire and opening, the opening with the upper surface of bottom plate is flush. The tank body is internally laid with a grout stopping layer and a filling and leveling layer, the grout stopping layer is positioned below the filling and leveling layer, and the thickness of the grout stopping layer is greater than that of the filling and leveling layer. The bottom surface of the grout stopping layer is attached to the bottom wall, the top surface of the grout stopping layer is attached to the bottom surface of the filling and leveling layer, and the top surface of the filling and leveling layer is flush with the upper surface of the bottom plate. The grouting hole extends downwards from the groove body. The plurality of grouting holes are distributed at intervals along the width direction, and inorganic nano materials are filled in the grouting holes. The roadway floor target grouting reinforcement structure based on the inorganic nano material can effectively control the bottom heave and prevent slurry leakage.

Description

Tunnel bottom plate target slip casting reinforced structure based on inorganic nano-material

Technical Field

The specification relates to the technical field of grouting, in particular to a roadway floor targeted grouting reinforcement structure based on inorganic nano materials.

Background

Under the influence of excavation engineering, the roadway top and bottom plates and the rock masses on the two sides deform and displace into the roadway, and the phenomenon that the roadway bottom plate bulges upwards is called bottom heave. The pucking can lead to the tunnel section to diminish, hinders the ventilation transportation of mine and personnel's walking, especially after coal mining gets into the deep portion, the tunnel pucking then is showing more, and the pucking not only arouses the bottom plate to warp and destroys, causes serious influence to the stability of tunnel roof and two sides moreover.

In order to effectively control the base drum, a plurality of base drum control technologies are proposed, which mainly include support reinforcement methods such as base plate anchor rods, base plate grouting and closed supports, pressure relief methods such as joint cutting, construction drilling and loosening blasting, and various combined support methods. From the analysis of the influence on the stability of surrounding rocks, the effect of controlling the floor heave of the roadway by the reinforcement method is superior to that of the pressure relief method, so that in practical application, the floor heave of the roadway is controlled by the reinforcement method mostly.

The roadway section anchoring and grouting reinforcement method adopts a method of anchoring first and then grouting to control the surrounding rock deformation. However, due to the poor plugging of the hole wall, the injected inorganic nano material often generates a slurry leakage situation.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the invention aims to provide a roadway floor target grouting reinforcement structure based on inorganic nano materials, which can effectively control bottom heave and prevent slurry leakage.

In order to achieve the above object, embodiments of the present specification provide a roadway floor target grouting reinforcement structure based on an inorganic nano material, including:

a tank body arranged on the bottom plate; the bottom plate is provided with a length direction and a width direction, and the plurality of groove bodies are distributed at intervals along the length direction; the tank body is provided with a bottom wall and an opening which are opposite, and the opening is flush with the upper surface of the bottom plate; a grout stopping layer and a filling and leveling layer are laid in the tank body, the grout stopping layer is positioned below the filling and leveling layer, and the thickness of the grout stopping layer is greater than that of the filling and leveling layer; the bottom surface of the grout stopping layer is attached to the bottom wall, the top surface of the grout stopping layer is attached to the bottom surface of the filling and leveling layer, and the top surface of the filling and leveling layer is flush with the upper surface of the bottom plate;

and the grouting holes extend downwards from the tank body, are distributed at intervals in the width direction, and are filled with inorganic nano materials.

In a preferred embodiment, the plurality of grooves are parallel and evenly spaced.

In a preferred embodiment, the length of the trough body is equal to the width of the bottom plate.

In a preferred embodiment, the width of the trough body is at least 0.5 m, and the depth of the trough body is at least 0.4 m.

In a preferred embodiment, the distance between adjacent troughs is 2 m.

As a preferred embodiment, the thickness of the grout layer is 0.3 m.

As a preferred embodiment, the thickness of the levelling layer is 0.1 meter.

In a preferred embodiment, the grouting holes are arranged in parallel and evenly spaced.

As a preferred embodiment, the axial direction of the grouting hole is at 45 ° to the length direction; the nearest distance between the grouting hole and the upper part is 0.6 m.

In a preferred embodiment, the length of the grouting holes is 1.5 meters, and the distance between adjacent grouting holes is 1.5 meters.

Has the advantages that:

according to the roadway bottom plate targeted grouting reinforcement structure based on the inorganic nano material, the bottom plate is made into a stable and integrated beam-slab engineering body structure by arranging the groove body and the grouting hole on the bottom plate, the deformation of the bottom plate can be effectively resisted, and the bottom heave can be effectively controlled. Meanwhile, by arranging the slurry stopping layer, a good hole sealing effect is achieved, and slurry leakage of the inorganic nano material due to untight hole wall can be effectively prevented. In addition, the construction structure of the roadway floor target grouting reinforcement structure is simple, installation and operation are convenient, inorganic nano material slurry can be uniformly diffused into the roadway surrounding rock body through target grouting, grouting homogeneity of the whole surrounding rock body is improved, the broken surrounding rock body forms a whole body with similar mechanical properties, and grouting reinforcement effect is effectively improved.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a front view of a roadway floor target grouting reinforcement structure based on inorganic nano-materials provided in the present embodiment;

FIG. 2 is a left side view of FIG. 1;

fig. 3 is a top view of fig. 1.

Description of reference numerals:

10. a roadway; 11. a base plate; x, length direction; y, width direction; 12. an upper part;

1. a tank body; 2. a bottom wall; 3. an opening; 4. a grout stopping layer; 5. filling and leveling the layer; 6. and (4) grouting holes.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 to 3. The embodiment of the application provides a roadway floor targeting grouting reinforcement structure based on inorganic nano materials, which comprises a groove body 1 and grouting holes 6.

Wherein, the tank body 1 is arranged on the bottom plate 11. The bottom plate 11 has a length direction X and a width direction Y, and the plurality of tanks 1 are distributed at intervals along the length direction X. The tank 1 has opposite bottom walls 2 and an opening 3, the opening 3 being flush with the upper surface of the bottom plate 11. A grout stopping layer 4 and a filling and leveling layer 5 are laid in the tank body 1, the grout stopping layer 4 is located below the filling and leveling layer 5, and the thickness of the grout stopping layer 4 is larger than that of the filling and leveling layer 5. The bottom surface of the grout stopping layer 4 is attached to the bottom wall 2, the top surface of the grout stopping layer 4 is attached to the bottom surface of the leveling layer 5, and the top surface of the leveling layer 5 is flush with the upper surface of the bottom plate 11. The grouting holes 6 extend downward from the tank body 1. The plurality of grouting holes 6 are distributed at intervals along the width direction Y, and inorganic nano materials are filled in the grouting holes 6.

The roadway floor target grouting reinforcement structure based on the inorganic nano material provided by the embodiment has the advantages that the groove body 1 and the grouting hole 6 are arranged on the floor 11, so that the floor 11 becomes a stable and integrated beam slab engineering body structure, the deformation of the floor 11 can be effectively resisted, and the floor heave can be effectively controlled. Meanwhile, by arranging the slurry stopping layer 4, a good hole sealing effect is achieved, and slurry leakage of the inorganic nano material due to untight hole wall can be effectively prevented. In addition, the construction structure of the roadway 10 bottom plate 11 targeting grouting reinforcement structure is simple, installation and operation are convenient, inorganic nano-material slurry can be uniformly diffused into the roadway surrounding rock body through targeting grouting, grouting homogeneity of the whole surrounding rock body is improved, the broken surrounding rock body forms a whole body with similar mechanical properties, and grouting reinforcement effect is effectively improved.

The tunnel 10 in the present embodiment is defined by a bottom plate 11, a roof plate, and side parts 12, the bottom plate 11 being located at the bottom of the tunnel 10, the roof plate being located at the top of the tunnel 10, and the side parts 12 being located on both sides of the tunnel 10.

In the present embodiment, the longitudinal direction X of the floor 11 is the same as the advancing direction of the roadway 10, and the width direction Y of the floor 11 is perpendicular to the longitudinal direction X. Preferably, the length of the tank body 1 is equal to the width of the bottom plate 11, that is, the tank body 1 is continuously arranged in the width direction Y of the bottom plate 11, so that a more stable reinforcing structure can be ensured. In some embodiments, the bottom plate 11 is provided with a ditch, and the tank body 1 may not be continuously provided in the width direction Y of the bottom plate 11. The ditch can be arranged close to the upper part 12, so that the length of the trough body 1 is less than the width of the bottom plate 11; the ditch can be arranged far away from the upper part 12 to divide the tank body 1 into a left section and a right section. The term "left and right" refers to the left and right directions in fig. 1 and 3, based on the width direction Y.

In the present embodiment, as shown in fig. 3, the plurality of the tank bodies 1 are arranged in parallel and at uniform intervals, so that the formed reinforcing structure is more stable. Wherein, the shape and the size of each groove body 1 are the same. Preferably, the width of the tank body 1 is at least 0.5 m, and the depth of the tank body 1 is at least 0.4 m. The distance between the adjacent tank bodies 1 is 2 m.

More preferably, the dimension of the tank body 1 in the longitudinal direction X of the bottom plate 11 is 0.5 m. The depth of the tank body 1 is 0.4 m.

In the present embodiment, the thickness of the grout stop layer 4 is preferably 0.3 m, and the material of the grout stop layer 4 may be the same material as the grout filling the grout holes 6, i.e., an inorganic nanomaterial, or may be other grout material, which is not limited in the present invention. The grout stop layer 4 can prevent the grouting pressure from rising and the grout from running when grouting into the grouting hole 6. The thickness of the filling and leveling layer 5 is preferably 0.1 m, and the material of the filling and leveling layer 5 can be rock fragments such as gangue, which is convenient to obtain in the roadway 10 and is convenient to construct.

In the present embodiment, as shown in fig. 2, the plurality of grouting holes 6 are arranged in parallel and at uniform intervals, so that the formed reinforcing structure is more stable. Wherein each grouting hole 6 has the same shape and size. Preferably, the axial direction of the grouting holes 6 is 45 ° to the length direction X, in order to obtain a more stable reinforcement structure. The length of the grouting holes 6 is preferably 1.5 m, so that the stability of the reinforced structure is ensured under the condition of convenient construction.

In the present embodiment, the distance between adjacent grouting holes 6 is equal to the length of the grouting hole 6. Preferably, the distance between adjacent grouting holes 6 is 1.5 meters. The distance between the grouting holes 6 and the upper part 12 is preferably 0.6 m. That is, the distance between the injection hole 6 adjacent to the upper 12 and the upper 12 is preferably 0.6 m. Each trough body 1 can be provided with 3 grouting holes 6, and the distance between two grouting holes 6 positioned on the outer side and the upper part 12 is 0.6 m.

In the present embodiment, when grouting is performed on the grouting hole 6, the mining inorganic material grouting reinforcement device provided in the application No. CN202110616981.2 and entitled "mining inorganic material grouting reinforcement device and grouting reinforcement method" may be selected for grouting operation. The injection holes 6 in CN202110616981.2 are different from the injection holes 6 in the present application. The length of the inorganic material grouting reinforcement device for the mine and the position of the grouting hole 6 of the grouting pipe are adjusted to be fully intersected with the crack of the bottom plate 11, so that the aim and the effect of directionally reinforcing targeted grouting can be achieved. In addition, the present embodiment also achieves the effect of targeted grouting by using inorganic nano-materials as grouting materials.

The roadway floor target grouting reinforcement structure based on the inorganic nano material has the advantages of simple construction structure and convenience in installation and operation. In a particular application scenario, the reinforcing structure is formed by the following steps.

The method comprises the following steps: digging a groove body 1 on a bottom plate 11, and then forming a reinforced beam type structure of the bottom plate 11 as shown in figure 3;

step two: grouting holes 6 are reasonably distributed in each groove body 1 according to the width of the roadway 10, and the grouting holes 6 form an included angle of 45 degrees with the bottom plate 11 along the advancing direction, so that grouting drilling can be performed by using a drilling machine;

step three: processing a grouting device (the grouting device can be a mining inorganic material grouting reinforcement device provided by the application number CN 202110616981.2), processing threads on the outer surface of a fixed pipe, uniformly winding line hemp on the outer surface of the threads, and plugging the contact part of the grouting device and the orifice 6 of a grouting hole by using a quick-setting high-strength plugging agent to finish the installation and the fixation of the grouting device;

step four: a grout stopping layer 4 is laid in the tank body 1;

step five: and (3) starting grouting, injecting the inorganic nano material according to a preset proportion, forming a leveling layer 5 on the stop layer 4 after grouting is finished, and leveling the stop layer 4. Wherein the given proportion can be set according to actual conditions.

It is to be noted that, in the description of the present specification, the meaning of "a plurality" means two or more unless otherwise specified.

Any numerical value recited herein includes all values from the lower value to the upper value, in increments of one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to 30" is intended to cover "about 20 to about 30", including at least the indicated endpoints.

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified elements, components, parts or steps as well as other elements, components, parts or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed inventive subject matter.

Claims

1. The utility model provides a tunnel bottom plate target slip casting reinforced structure based on inorganic nano-material which characterized in that includes:

a trough body arranged on the bottom plate; the bottom plate is provided with a length direction and a width direction, and the plurality of groove bodies are distributed at intervals along the length direction; the tank body is provided with a bottom wall and an opening which are opposite, and the opening is flush with the upper surface of the bottom plate; a grout stopping layer and a filling and leveling layer are laid in the tank body, the grout stopping layer is positioned below the filling and leveling layer, and the thickness of the grout stopping layer is greater than that of the filling and leveling layer; the bottom surface of the grout stopping layer is attached to the bottom wall, the top surface of the grout stopping layer is attached to the bottom surface of the filling and leveling layer, and the top surface of the filling and leveling layer is flush with the upper surface of the bottom plate;

2. The inorganic nano-material based roadway floor targeting grouting reinforcement structure of claim 1, wherein a plurality of the grooves are arranged in parallel and at even intervals.

3. The roadway floor targeted grouting reinforcement structure based on inorganic nano-materials as claimed in claim 2, wherein the length of the trough body is equal to the width of the floor.

4. The roadway floor targeting grouting reinforcement structure based on inorganic nano-materials of claim 2, wherein the width of the trough body is at least 0.5 m, and the depth of the trough body is at least 0.4 m.

5. The roadway floor target grouting reinforcement structure based on the inorganic nano-materials as claimed in claim 2, wherein the distance between adjacent troughs is 2 meters.

6. The inorganic nano-material based roadway floor targeted grouting reinforcement structure of claim 1, wherein the thickness of the grout stop layer is 0.3 m.

7. The inorganic nanomaterial-based roadway floor targeted grouting reinforcement structure of claim 1, wherein the thickness of the leveling layer is 0.1 meter.

8. The inorganic nanomaterial-based roadway floor targeting grouting reinforcement structure of claim 1, wherein a plurality of the grouting holes are arranged in parallel and evenly spaced.

9. The inorganic nanomaterial-based roadway floor targeting grouting reinforcement structure of claim 8, wherein the axial direction of the grouting holes is at 45 ° to the length direction; the nearest distance between the grouting hole and the upper part is 0.6 m.

10. The inorganic nano-material based roadway floor targeting grouting reinforcement structure of claim 8, wherein the length of the grouting holes is 1.5 m, and the distance between adjacent grouting holes is 1.5 m.