Pre-drainage drilling structure of high drainage roadway

Abstract

The utility model provides a pre-drainage drilling structure of a high drainage roadway, and belongs to the technical field of gas drainage. Comprising a bag installed on a gas hole packer body, the bottom end of the gas hole packer body is sleeved with a lower ring body, and the top end of the gas hole packer body is sleeved with an upper ring body; and the clamping assembly is used for fixing the bag to the outer wall of the gas hole packer body, and the clamping assembly is connected with the bag and the lower ring body. According to the gas hole packer, the bottom end of the bag can be fixed to the surface of the gas hole packer body through the clamping assembly, and meanwhile the fixing effect of the bag on the surface of the gas hole packer body can be improved under the cooperation of the upper ring body, the attaching plate and the second arc-shaped plate; and the situation that the bag on the surface of the gas hole packer body is pushed by protrusions on the inner wall of the drill hole when being fed into the drill hole, and the fixing effect of the bag on the surface of the gas hole packer body is affected is avoided, and the structure is light.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas extraction technical field, especially in a kind of high extraction roadway pre-extraction borehole structure. BACKGROUND

[0002] High extraction roadway is the special drainage roadway excavated in the fissure zone formed by mining layer top under the influence of mining, mainly divided into strike high extraction roadway and tendency high extraction roadway, and pre-extraction borehole is a kind of drilling operation in coal seam, aiming at reducing the gas pressure and ground stress of coal seam, improving the permeability of coal seam, and then reducing and eliminating the outburst danger of coal seam, to control gas disaster.

[0003] In order to prevent gas leakage when extracting, it is necessary to fix the gas sealing device inside the borehole, and it is necessary to fix the bag on the surface of the gas sealing device. The existing bag is mostly fixed on the surface of the gas sealing device by grouting pipe or adhesive material. When the gas sealing device and the bag are put into the inside of the borehole, they are easily dragged by the stones on the inner wall of the borehole, which easily affects the fixing effect of the bag on the surface of the gas sealing device. The fixing effect of the bag is poor. Therefore, the utility model provides a high extraction roadway pre-extraction borehole structure to meet the needs. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a high extraction roadway pre-extraction borehole structure, which can fix the bottom end of the bag on the surface of the gas sealing device body by setting the clamping assembly. At the same time, under the cooperation of the upper ring body, the adhering plate and the second arc-shaped plate, the fixing effect of the bag on the surface of the gas sealing device body can be improved. The bag on the surface of the gas sealing device body is not pushed by the protrusions on the inner wall of the borehole when it is sent into the borehole, which affects the fixing effect of the bag on the surface of the gas sealing device body. The structure is light and portable. The above settings can solve the problem of poor fixing effect of the bag on the surface of the gas sealing device.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A high extraction roadway pre-extraction borehole structure, comprising a bag installed on a gas sealing device body, a lower ring body is sleeved on the bottom end of the gas sealing device body, and an upper ring body is sleeved on the top end of the gas sealing device body; a clamping assembly is used to fix the bag on the outer wall of the gas sealing device body, and the clamping assembly is connected with the bag and the lower ring body respectively.

[0007] Optionally, the clamping assembly comprises a first arc-shaped plate fixedly connected to the outer wall of the lower ring body, a bent plate is fixedly connected to one end of the first arc-shaped plate away from the lower ring body, a plurality of clamping joints are fixedly connected to the bottom end of the bag, and a spring ring is fixedly connected to one end of the bent plate away from the first arc-shaped plate.

[0008] Optionally, the outer wall of the upper ring body is fixedly connected with a plurality of abutting plates, and the outer wall of the plurality of abutting plates is fixedly connected with a second arc-shaped plate.

[0009] Optionally, the outer wall of the lower ring body and the outer wall of the upper ring body are fixedly connected with a plurality of clamping sleeves, and the outer wall of the bag is provided with a plurality of wall abutting rods.

[0010] Optionally, the top end and the bottom end of the plurality of wall abutting rods are fixedly connected with bending portions, and the other end of the plurality of bending portions is in clamping engagement with the clamping sleeve.

[0011] Optionally, the outer wall of the lower ring body is fixedly connected with a T-shaped bracket, and the outer wall of the lower ring body is in clamping engagement with the T-shaped bracket.

[0012] Optionally, the outer wall of the plurality of clamping sleeves is fixedly connected with a plurality of convex points.

[0013] Optionally, the inner wall of the plurality of elastic rings is fixedly connected with a plurality of convex rings, and the plurality of convex rings are in clamping engagement with the clamping head.

[0014] Optionally, the outer wall of the plurality of abutting plates is in close abutment with the top end of the bag.

[0015] Optionally, the plurality of clamping heads are in clamping engagement with the elastic ring.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the above scheme, through the setting of the clamping assembly, the bottom end of the bag can be fixed on the surface of the gas hole sealing device body, and meanwhile, under the cooperation of the upper ring body, the abutting plate and the second arc-shaped plate, the fixing effect of the bag on the surface of the gas hole sealing device body can be improved, the bag on the surface of the gas hole sealing device body is prevented from being pushed by the protrusion of the inner wall of the drill hole when being sent into the drill hole, the fixing effect of the bag on the surface of the gas hole sealing device body is affected, and the structure is light and handy.

[0018] Through the setting of the clamping sleeve, the wall abutting rod and the bending portion, the clamping assembly and the upper ring body are conveniently connected as a whole, the stability of the clamping assembly and the upper ring body in fixing the bag is improved, meanwhile, the bag is pushed to abut against the inner wall of the pre-drainage drill hole under the elasticity of the bending portion when grouting, the fixing effect of the bag on the gas hole sealing device body is improved through the convex points on the surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated herein and forming part of the specification show embodiments of the present utility model, and together with the specification further serve to explain the principles of the present utility model, and enable a person skilled in the relevant art to implement and use the present utility model.

[0020] Figure 1It is a high pumping roadway pre-pumping borehole structure three-dimensional structure schematic view;

[0021] Figure 2 It is a lower ring body, first arc plate and bent plate three-dimensional structure schematic view;

[0022] Figure 3 It is a clamping head, elastic ring and convex ring cooperation section view three-dimensional structure schematic view;

[0023] Figure 4 It is an upper ring body, adhering plate and second arc plate three-dimensional structure schematic view;

[0024] Figure 5 It is a wall sticking rod and bending part cooperation enlarged three-dimensional structure schematic view.

[0025] Reference signs:

[0026] 1, gas hole sealing device body; 2, bag; 3, lower ring body; 4, first arc plate; 5, bent plate; 6, clamping head; 7, elastic ring; 8, convex ring; 9, upper ring body; 10, adhering plate; 11, second arc plate; 12, T-shaped frame; 13, clamping sleeve; 14, wall sticking rod; 15, bending part; 16, convex point.

[0027] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in the specific structure, device and environment, and those skilled in the art can adjust or modify these devices and environment according to specific needs. DETAILED DESCRIPTION

[0028] The high pumping roadway pre-pumping borehole structure provided by the present application will be described in detail below in combination with the drawings and specific embodiments. It should be pointed out here that in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement some known technologies; and the drawings are only used to describe the embodiments more specifically, and are not intended to specifically limit the present application.

[0029] It should be pointed out that in the specification, "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like indicate that the embodiments described can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it should be within the knowledge of those skilled in the art to realize this feature, structure or characteristic in combination with other embodiments (whether or not explicitly described).

[0030] In general, the terminology can be understood at least in part from a context of a use of the language within a description. For example, the term “one or more” as used herein, depending at least in part upon a context of a

[0031] It is to be understood that the terms “on,” “over,” and “above” in the present disclosure are to be interpreted in the broadest possible way consistent with the context. Consequently, “on,” “over,” or “above” encompasses both a direct arrangement as well as an indirect arrangement having one or more intervening features or layers therebetween, and “over” or “above” encompasses both an arrangement “over” or “above” as well as an arrangement “over” or “above” without intervening features or layers therebetween.

[0032] In addition, spatially relative terms, such as “beneath,” “below,” “lower,” “above,” “upper” and the like, can be used herein for ease of description to describe one element or feature’s relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0033] As Figures 1 to 5As shown, the embodiment of the utility model provides a kind of high pumping roadway pre-pumping borehole structure, including the bag 2 of being installed on the gas hole sealing device body 1, the bottom end of the gas hole sealing device body 1 is equipped with lower ring body 3, the outer wall of lower ring body 3 is fixedly connected with T-shaped frame 12, the outer wall of lower ring body 3 is connected with T-shaped frame 12 with clamping, the top of the gas hole sealing device body 1 is equipped with upper ring body 9, the outer wall of upper ring body 9 is fixedly connected with multiple adhering plate 10, the outer wall of multiple adhering plate 10 is fixedly connected with second arc plate 11, the outer wall of multiple adhering plate 10 is tightly adhered with the top of bag 2;Clamping assembly, clamping assembly is used for fixing bag 2 on the outer wall of gas hole sealing device body 1, clamping assembly is connected with bag 2 and lower ring body 3 respectively, the surface of gas hole sealing device body 1 is provided with bag 2, the inside of bag 2 is provided with grouting pipe, the surface of gas hole sealing device body 1 is provided with lower ring body 3, one end of lower ring body 3 is provided with air slot, the other end of lower ring body 3 is provided with T-shaped frame 12, the air slot of one end of lower ring body 3 can be equipped in the outer wall of T-shaped frame 12 of the other end of lower ring body 3, the outer wall of upper ring body 9 is fixed with multiple adhering plate 10, the outer wall of adhering plate 10 is fixed with second arc plate 11, adhering plate 10 and second arc plate 11 integrated structure, with elasticity, simultaneously under the elasticity of adhering plate 10 and second arc plate 11 itself, adhering plate 10 is adhered in the top of bag 2, it is convenient to fix the top of bag 2, under the arc of the board body of first arc plate 4 and second arc plate 11, when gas hole sealing device body 1 is sent into the inside of borehole, the board body of first arc plate 4 and second arc plate 11 can be contacted by the protruding place in the inside of borehole, so that first arc plate 4 and second arc plate 11 are extruded by the protrusion in the inside of borehole, and then the fixing effect of bag 2 can be improved, avoid the protrusion in the inside of borehole to influence the fixing effect of bag 2 on the surface of gas hole sealing device body 1.

[0034] As one embodiment in the present embodiment, as Figures 2 to 3As shown, the clamping assembly comprises a first arc-shaped plate 4 fixedly connected to the outer wall of the lower ring body 3, a bent plate 5 fixedly connected to the end of the first arc-shaped plate 4 away from the lower ring body 3, a plurality of clamping heads 6 fixedly connected to the bottom end of the bag 2, a plurality of elastic rings 7 fixedly connected to the end of the bent plate 5 away from the first arc-shaped plate 4, a plurality of convex rings 8 fixedly connected to the inner wall of the elastic ring 7, and a plurality of clamping heads 6 clamped with the convex ring 8. The surface of the clamping head 6 is provided with a circular groove. The first arc-shaped plate 4, the bent plate 5, the elastic ring 7 and the convex ring 8 are provided as an integrated structure and are all elastic. When the bag 2 needs to be fixed on the surface of the gas hole sealing device body 1, the lower ring body 3 can be sleeved on the surface of the gas hole sealing device body 1 by the elasticity of the lower ring body 3 itself, and the air slot on the surface of the lower ring body 3 is moved to the surface of the T-shaped frame 12 at the other end of the lower ring body 3, so as to fix the lower ring body 3 on the surface of the gas hole sealing device body 1. At the same time, the convex ring 8 on the inner wall of the elastic ring 7 is aligned with the circular groove on the surface of the clamping head 6, the convex ring 8 is inserted into the circular groove, and the outer wall of the elastic ring 7 is clamped on the outer wall of the clamping head 6, so as to fix the bottom end of the bag 2. The fixing effect of the bag 2 on the gas hole sealing device body 1 can be improved. When the gas hole sealing device body 1 is put into the drill hole, when the surface of the gas hole sealing device body 1 contacts the protrusions in the drill hole, the first arc-shaped plate 4 is arranged to be pressed down when contacting the protrusions, and the elastic ring 7 is pushed on the surface of the clamping head 6 by the bent plate 5, so as to improve the fixing effect of the bottom end of the bag 2.

[0035] In this embodiment, as shown in the drawings, Figures 4 to 5 The outer walls of the lower ring body 3 and the upper ring body 9 are fixedly connected with a plurality of clamping sleeves 13, the outer wall of the bag 2 is provided with a plurality of wall-adhesion rods 14, the top end and the bottom end of the wall-adhesion rod 14 are fixedly connected with a bent portion 15, the other end of the bent portion 15 is clamped with the clamping sleeve 13, the outer wall of the clamping sleeve 13 is fixedly connected with a plurality of convex points 16, the outer walls of the lower ring body 3 and the upper ring body 9 are fixedly connected with a plurality of clamping sleeves 13, the outer wall of the bag 2 is provided with a plurality of wall-adhesion rods 14, the top end and the bottom end of the wall-adhesion rod 14 are fixedly connected with a bent portion 15, and the outer wall of the wall-adhesion rod 14 is provided with a plurality of convex points 16, the wall-adhesion rod 14 and the two bent portions 15 are provided as an integrated structure, and the outer wall of the two bent portions 15 is provided with a weakening groove, which can improve the elasticity of one end of the bent portion 15 and facilitate the clamping of one end of the bent portion 15 with the clamping sleeve 13. When the bag 2 is grouted through the grouting pipe, the bag 2 will expand outward under the cooperation of the grout, so that the expanded bag 2 pushes the wall-adhesion rod 14 to expand outward under the elastic effect of the wall-adhesion rod 14 and the bent portion 15, so that the convex points 16 on the outer wall of the wall-adhesion rod 14 are attached to the inside of the drill hole, thereby improving the contact area between the bag 2 and the inner wall of the drill hole and improving the friction between the bag 2 and the drill hole, thereby facilitating the fixing effect of the bag 2.

[0036] The working principle of the technical scheme provided by the utility model is as follows:

[0037] When in use, the lower ring body 3 is sleeved on the surface of the bag 2, and the hollow slot at one end of the lower ring body 3 is sleeved on the outer wall of the T-shaped frame 12 at the other end of the lower ring body 3, so that the lower end of the lower ring body 3 is fixed on the surface of the gas hole sealing device body 1, and the first arc-shaped plate 4 and the bent plate 5 are pushed, the convex ring 8 on the inner wall of the elastic ring 7 is inserted into the circular groove on the surface of the clamping joint 6, the elastic ring 7 is first fixed on the surface of the clamping joint 6, and meanwhile, under the elasticity of the elastic ring 7, one end of the elastic ring 7 is clamped and matched with the clamping joint 6, so that the bottom end of the bag 2 is fixed, and meanwhile, under the elasticity of the fitting plate 10 and the second arc-shaped plate 11, the inner wall of the fitting plate 10 is fitted on the top end of the bag 2, so that the top end of the bag 2 is fixed, the fixing effect of the bag 2 on the surface of the gas hole sealing device body 1 can be improved, the bag 2 is prevented from being moved by the protrusions such as stones on the inner wall of the drill hole when the gas hole sealing device body 1 is sent into the drill hole, and the fixing effect of the bag 2 is affected, meanwhile, when the protrusions are faced, the protrusions can push the first arc-shaped plate 4 and the second arc-shaped plate 11, so that the bent plate 5 and the elastic ring 7 are closely fitted on the surface of the clamping joint 6, the fixing effect of the bag 2 is improved, then the bent portions 15 at the two ends of the wall-attached rod 14 are clamped in the clamping sleeves 13 on the surfaces of the lower ring body 3 and the upper ring body 9, the lower ring body 3 and the upper ring body 9 are conveniently connected as a whole, when the bag 2 is grouted through the grouting pipe, the bag 2 expands outward, so that the bag 2 drives the wall-attached rod 14 to expand outward through the elasticity of the wall-attached rod 14 and the bent portions 15, the protrusions 16 on the surface of the wall-attached rod 14 are fitted on the inner wall of the drill hole, the contact area of the gas hole sealing device body 1 on the inner wall of the drill hole is improved, the friction effect of the bag 2 on the inner wall of the drill hole is improved, and the fixing effect of the gas hole sealing device body 1 is improved.

[0038] The utility model covers any alternative, modification, equivalent method and scheme made on the essence and range of the utility model. In order to make the public have thorough understanding of the utility model, the specific details are explained in the following preferred embodiments of the utility model, and the utility model can be completely understood without the description of these details for the person skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the utility model, the well-known methods, processes, flows, elements and circuits are not explained in detail.

[0039] It should be noted that, for the ordinary skilled in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, which should also be regarded as the protection range of the utility model.

Claims

1. A high extraction level pre-extraction borehole configuration, characterized by, The gas sealing device comprises a bag fixed on the body of the gas sealing device, a lower ring body is sleeved on the bottom end of the body of the gas sealing device, and an upper ring body is sleeved on the top end of the body of the gas sealing device; A clamping assembly is arranged on the outer wall of the body of the gas sealing device for fixing the bag.

2. The high-level dredging pre-dredging borehole structure according to claim 1, characterized in that, The clamping assembly comprises a first arc-shaped plate fixed on the outer wall of the lower ring body, a bending plate is fixed on the end of the first arc-shaped plate away from the lower ring body, a plurality of clamping joints are fixed on the bottom end of the bag, and a spring ring is fixed on the end of the bending plate away from the first arc-shaped plate.

3. The high-level dredging pre-dredging borehole structure according to claim 1, characterized in that, A plurality of abutting plates are fixed on the outer wall of the upper ring body, and a second arc-shaped plate is fixed on the outer wall of the abutting plates.

4. The high-level dredging pre-dredging borehole structure according to claim 1, characterized in that, A plurality of clamping sleeves are fixed on the outer wall of the lower ring body and the upper ring body, and a plurality of abutting rods are arranged on the outer wall of the bag.

5. The high-level dredging pre-dredging borehole structure according to claim 4, characterized in that, A bending part is fixed on the top end and the bottom end of each abutting rod, and the other end of each bending part is clamped with the clamping sleeve.

6. The high-level dredging pre-dredging borehole structure according to claim 1, characterized in that, A T-shaped bracket is fixed on the outer wall of the lower ring body, and the outer wall of the lower ring body is clamped with the T-shaped bracket.

7. The high-level dredging pre-dredging borehole structure according to claim 4, characterized in that, A plurality of convex points are fixed on the outer wall of each clamping sleeve.

8. The high extraction roadway pre-extraction borehole configuration according to claim 2 wherein, A plurality of convex rings are fixed on the inner wall of each spring ring, and each convex ring is clamped with the clamping joint.

9. The high extraction roadway pre-extraction borehole configuration according to claim 3 wherein, The outer wall of each abutting plate is tightly abutted with the top end of the bag.

10. The high-level dredging pre-dredging borehole structure according to claim 2, characterized in that, Each clamping joint is clamped with the spring ring.

Images