CN214577012U - Prestressed hole sealing pipe assembly for high-stress roadway surrounding rock pressure relief hole - Google Patents
Prestressed hole sealing pipe assembly for high-stress roadway surrounding rock pressure relief hole Download PDFInfo
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- CN214577012U CN214577012U CN202120680247.8U CN202120680247U CN214577012U CN 214577012 U CN214577012 U CN 214577012U CN 202120680247 U CN202120680247 U CN 202120680247U CN 214577012 U CN214577012 U CN 214577012U
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- relief hole
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Abstract
The utility model relates to the technical field of roadways, and provides a prestressed hole sealing pipe assembly for a high-stress roadway surrounding rock pressure relief hole, which comprises a hollow hose and a hollow pipe, wherein the hollow hose is arranged in the pressure relief hole, the first end of the hollow hose is of a closed structure, and the second end of the hollow hose is provided with an opening; the first end of the medium pipe extends into the hollow hose through the opening, and the second end of the medium pipe is positioned outside the hollow hose and is used for being connected with a high-pressure pipe so as to introduce a high-pressure medium into the hollow hose; and the one-way stop valve is arranged in the middle of the medium pipe. The utility model discloses can maintain the shallow portion of high stress tunnel country rock release hole and not collapse and make the country rock stable to the country rock through the release hole deep collapses naturally, with the effect that reaches the release of high stress tunnel country rock release hole deep.
Description
Technical Field
The utility model relates to a tunnel technical field especially relates to a high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole.
Background
Roadways are various passages drilled between the ground surface and the coal body, passages for transporting mines, ventilation, drainage, pedestrians and the like, and are collectively called roadways. Influenced by the buried depth, geological structure and mining activity, tunnel country rock 2 always forms high stress concentration district 1, because the stress level in high stress concentration district 1 exceedes tunnel country rock 2's bearing limit greatly, the serious deformation destruction condition often appears in tunnel country rock 2. In order to control the stability of the surrounding rock 2 of the roadway at a high stress level, people often control the stability by means of a high-prestress anchor rod supporting system, wherein the high prestress is the supporting stress diffused into the surrounding rock 2 of the roadway by rotating and extruding a tray through the threads at the tail part of the anchor rod 3. Because the prestress between the two high-prestress anchor rods 3 can be diffused to form the prestress superposition area 41, the prestress superposition area 41 can extrude the surrounding rock 2 of the roadway, so that the overall performance of the surrounding rock 2 of the roadway is improved, and the bearing capacity of the surrounding rock is further improved, as shown in fig. 1.
The high prestressed anchor rod is convenient to construct, reliable in technology and good in effect of controlling the stability of surrounding rocks of the roadway, so that the high prestressed anchor rod is widely applied. Later, in order to relieve a part of the high stress to relieve the pressure in the high prestressed anchor supporting area, a pressure relief hole 5 is formed between the two high prestressed anchors 3, wherein the pressure relief hole 5 is a circular hole with a certain depth, and most of the high stress is released when the high stress extrudes the surrounding rock 2 of the roadway to be crushed and deformed in the pressure relief hole 5, as shown in fig. 2.
The initial purpose of pressure relief of the pressure relief hole 5 is good, but in practical application, the pressure relief hole 5 has a major defect that after deformation and damage of the roadway surrounding rock 2, the pressure relief hole 5 not only generates a fracture area 6 in the deep roadway surrounding rock 2, but also generates a large number of fracture areas 6 in the support range of the anchor rod 3, so that the roadway surrounding rock 2 in the prestress superposition area 41 of the anchor rod 3 is damaged, the constraint force of the roadway surrounding rock 2 is greatly reduced, the prestress superposition area 41 is reduced, a prestress residual area 42 is formed, and deformation and damage of the roadway shallow surrounding rock are increased, as shown in fig. 3. In summary, the integrity of the surrounding rock of the shallow part is damaged while the high stress concentration is removed by utilizing the pressure relief hole at present, so that the damage and reduction of the prestress superposition area of the anchor rod are serious, and further the deformation and damage phenomena of the surrounding rock of the roadway are serious.
SUMMERY OF THE UTILITY MODEL
The utility model provides a prestressing force hole sealing pipe subassembly for high stress tunnel country rock release hole can maintain the shallow portion of high stress tunnel country rock release hole and not collapse and make the country rock stable to the country rock through the release hole deep collapses naturally, with the effect that reaches the release of high stress tunnel country rock release hole deep.
The utility model provides a high stress tunnel country rock prestressed hole sealing pipe subassembly for release hole, include: the hollow hose is arranged in the pressure relief hole, a first end of the hollow hose is of a closed structure, and a second end of the hollow hose is provided with an opening; the first end of the medium pipe extends into the hollow hose through the opening, and the second end of the medium pipe is positioned outside the hollow hose and is used for being connected with a high-pressure pipe so as to introduce a high-pressure medium into the hollow hose; and the one-way stop valve is arranged in the middle of the medium pipe.
According to the utility model provides a pair of high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole, be equipped with the sealing member in the opening, the sealing member cover is located on the medium pipe and be located the outside of one-way stop valve.
According to the utility model provides a pair of high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole, the outer wall of the second end of cavity hose is equipped with the fastener, be used for with the cavity hose with the sealing member fastening.
According to the utility model provides a pair of high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole, the fastener is for tying up the ring.
According to the utility model provides a prestressing force hole sealing pipe subassembly for high stress tunnel country rock relief hole, still include tray and lock nut, the tray cover is located the second end of medium pipe and is located the outside of sealing member, the external diameter of tray is greater than the aperture of relief hole, is used for installing on the lateral wall of relief hole; the locking nut is arranged at the second end of the medium pipe and positioned on the outer side of the tray.
According to the utility model provides a pair of high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole, be equipped with first screw thread section on the outer wall of the second end of medium pipe, lock nut with first screw thread section is connected.
According to the utility model provides a pair of high stress tunnel country rock prestressing force hole sealing pipe subassembly for release hole still includes the spanner, is used for revolving soon lock nut.
According to the utility model provides a pair of high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole, the inner wall of the second end of medium pipe is equipped with the second screw thread section, be used for with the interface threaded connection of high-pressure pipe.
According to the utility model provides a pair of high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole, be equipped with the strengthening rib in the body of cavity hose.
According to the utility model provides a pair of prestressing force hole sealing pipe subassembly for high stress tunnel country rock release hole, the length of cavity hose is less than the degree of depth of release hole just is greater than the length of the stock in the high stress tunnel country rock.
The utility model provides a prestressing force hole sealing pipe subassembly for high stress tunnel country rock release hole lets in high pressure medium through the medium pipe in to the hollow hose, makes the hollow hose expand and hug closely the wall of release hole, and makes high pressure medium maintain in the hollow hose through one-way stop valve, can maintain high stress tunnel country rock release hole shallow and not collapse and make the tunnel country rock stable, and through the surrounding rock section that the release hole deep does not have the hollow hose to support collapse naturally, so as to reach the effect of release in the deep of high stress tunnel country rock release hole; furthermore, the utility model discloses prestressing force hole sealing pipe subassembly reasonable in design, the technique is feasible, control high stress tunnel country rock stability effect is outstanding, has overcome traditional release hole and has not had shutoff and have not had the slip casting, destroy high stress tunnel country rock shallow portion country rock integrality, lead to the many problems that high prestressed anchorage pole prestressing force stack district subducted the inefficacy.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for the embodiments or the prior art descriptions, and obviously, the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic illustration of a pre-stressed overlap zone of a bolt in high stress roadway surrounding rock of the prior art;
FIG. 2 is a schematic illustration of a prior art pressure relief vent;
FIG. 3 is a schematic diagram showing the damage of a prestressed superposition area of a pressure relief hole and surrounding rock at a shallow part of a roadway in the prior art;
fig. 4 is an assembly view of the prestressed hole sealing pipe assembly for the high stress roadway surrounding rock pressure relief hole provided by the utility model;
fig. 5 is a schematic structural view of the prestressed hole sealing pipe assembly for the high stress roadway surrounding rock pressure relief hole provided by the utility model;
fig. 6 is an exploded view of the prestressed hole sealing pipe assembly for the high stress roadway surrounding rock pressure relief hole provided by the utility model;
reference numerals:
1: a region of high stress concentration; 2: surrounding rocks of the roadway; 3: an anchor rod;
41: a pre-stress superposition area; 42: a pre-stressed residual region; 5: a pressure relief hole;
6: a fracture zone; 7: a hollow hose; 8: an opening;
9: a medium pipe; 10: a high pressure pipe; 11: a one-way stop valve;
12: a seal member; 13: a fastener; 14: a tray;
15: locking the nut; 16: a first thread segment; 17: a second thread segment;
18: and (5) reinforcing ribs.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, 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 belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
For the specific description of fig. 1-3, please refer to the background art section, in short, the prior art uses the pressure relief holes 5 to relieve the high stress concentration and also destroy the integrity of the shallow surrounding rock, so that the prestressed overlapping area 41 of the anchor rod 3 is seriously damaged and eliminated, and further the roadway surrounding rock 2 is seriously deformed and damaged. To the defect that prior art exists, the utility model provides a prestressing force hole sealing pipe subassembly for high stress tunnel country rock relief hole.
The prestressed hole sealing pipe assembly for the high stress tunnel surrounding rock pressure relief hole of the present invention is described below with reference to fig. 4 to 6, and in this embodiment, the prestressed hole sealing pipe assembly mainly includes a hollow hose 7, a medium pipe 9 and a one-way stop valve 11. Wherein the hollow hose 7 is arranged in the pressure relief hole 5, a first end of the hollow hose 7 is a closed structure, and a second end of the hollow hose 7 is provided with an opening 8, it being understood that the first end of the hollow hose 7 is located at the deep end of the pressure relief hole 5, and the second end of the hollow hose 7 is located at the open end of the pressure relief hole 5, facilitating the installation of the medium pipe 9.
The first end of the medium pipe 9 extends to the inside of the hollow hose 7 through the opening 8, the second end of the medium pipe 9 is located outside the hollow hose 7 and is used for being connected with the high-pressure pipe 10, high-pressure medium is introduced into the hollow hose 7 through the medium pipe 9 through the high-pressure pipe 10, the hollow hose 7 is expanded to be attached to the wall surface of the pressure relief hole 5, the pressure relief hole 5 can be protected from collapsing, and the prestress superposition area 41 of the anchor rod 3 is further maintained to be complete, so that the roadway surrounding rock 2 in the area is stable. The specific type of the high-pressure medium of the present invention is not particularly limited as long as it can expand the hollow hose 7, and may be, for example, water, gas, or the like.
A one-way shut-off valve 11 is arranged in the middle of the medium pipe 9, by means of which one-way shut-off valve 11 the high-pressure medium can be maintained inside the hollow hose 7 without flowing out.
The embodiment of the utility model provides a let in high pressure medium through medium pipe 9 in to hollow hose 7, make hollow hose 7 expand and hug closely the wall of release hole 5, and make high pressure medium maintain in hollow hose 7 through one-way stop valve 11, can maintain the shallow portion of high stress tunnel country rock release hole and make the tunnel country rock stable not collapsing, and through the release hole deep not have the country rock section that hollow hose supported naturally collapse to reach the effect of release in the high stress tunnel country rock release hole deep; furthermore, the utility model discloses prestressing force hole sealing pipe subassembly reasonable in design, the technique is feasible, control high stress tunnel country rock stability effect is outstanding, has overcome traditional release hole and has not had shutoff and have not had the slip casting, destroy high stress tunnel country rock shallow portion country rock integrality, lead to the many problems that high prestressed anchorage pole prestressing force stack district subducted the inefficacy.
According to the utility model discloses an embodiment is equipped with sealing member 12 in the opening 8 of the second end of hollow hose 7, and sealing member 12 cover is located on medium pipe 9 and is located the outside of one-way stop valve 11 for opening 8 to the second end of hollow hose 7 seals. The specific type of the sealing member of the present invention is not particularly limited, and in this example, the sealing member 12 is a hollow torus, and the medium pipe 9 passes through the hollow torus and enters the hollow hose 7.
Further, the outer wall of the second end of the hollow hose 7 is provided with a fastening member 13 for fastening the hollow hose 7 with the sealing member 12, in this example, the fastening member 13 is a bundling ring, and a plurality of spacing rings are arranged.
According to the embodiment of the utility model, the prestressed hole-sealing pipe assembly of the utility model further comprises a tray 14 and a locking nut 15, the tray 14 is sleeved on the second end of the medium pipe 9 and is positioned outside the sealing element 12, and the outer diameter of the tray 14 is larger than the aperture of the pressure-relief hole 5 and is used for being installed on the outer side wall of the pressure-relief hole 5; a locking nut 15 is arranged at the second end of the medium pipe 9 outside the tray 14. Specifically, the outer wall of the second end of the medium pipe 9 is provided with a first thread section 16, the locking nut 15 is in threaded connection with the first thread section 16, after the tray 14 is sleeved at the second end of the medium pipe 9, the locking nut 15 is screwed by a wrench, the locking nut 15 can be screwed with the first thread section 16 through the inner thread of the locking nut 15, a certain pre-tightening force is applied, the tray 14 is tightly abutted to the outer side wall of the pressure relief hole 5 at the moment, and the pre-stress hole sealing pipe assembly is fixedly locked. Moreover, the installation is convenient for disassembly and assembly.
Further, the inner wall of the second end of the medium pipe 9 is provided with a second threaded section 17 for threaded connection with the interface of the high pressure pipe 10.
According to the utility model discloses an embodiment is equipped with strengthening rib 18 in the body of cavity hose 7 for improve the bulk strength of cavity hose 7, and then improve support intensity. In this example, the reinforcing bars 18 are wire bars.
According to the utility model provides an embodiment, the length of hollow hose 7 is less than the degree of depth of release hole 5 and is greater than the length of stock 3 in the high stress tunnel country rock. Thus, can make the utility model discloses prestressing force hole sealing pipe subassembly can cover whole prestressing force stack area 41, further improves the stability effect of high stress tunnel country rock, prevents that high prestressed anchorage pole prestressing force stack area from subducing the inefficacy to do not have the country rock section that hollow hose 7 supported to collapse naturally through 5 deep portions of release hole, with the effect that reaches the deep release of high stress tunnel country rock release hole.
The following describes the utility model provides a method of use of prestressing force hole sealing pipe subassembly, and the method of use of following description and the prestressing force hole sealing pipe subassembly of the aforesaid description can correspond the reference each other.
The first step is as follows: according to the design scheme of high-stress roadway support, the anchor rods 3 are correctly arranged in the surrounding rocks of the high-stress roadway, and reasonable pretightening force is applied.
The second step is that: a pressure relief hole 5 is drilled in the middle of a high-stress roadway surrounding rock anchor rod (generally, the middle of a roadway side part), the diameter of the pressure relief hole 5 is 300mm, and the depth is generally more than 4 times of the length of the anchor rod.
The third step: and placing a prestress hole sealing pipe assembly in the punched pressure relief hole 5 to ensure that the first thread section 16 of the medium pipe 9 is completely exposed.
The fourth step: the high-pressure pipe 10 is connected with the second threaded section 17 of the medium pipe 9.
The fifth step: and opening a switch of the high-pressure pipe at the bottom of the well to start injecting the high-pressure medium until the hollow hose 7 expands to be tightly attached to the wall surface of the pressure relief hole 5.
And a sixth step: ensure 7 inflation of cavity hose and hug closely 5 firm backs of release pore wall, embolia the first screw thread section 16 of medium pipe 9 with tray 14, then tighten up lock nut 15 with the spanner and apply certain pretightning force and make tray 14 support paste on the lateral wall of release hole 5, this pretightning force keeps unanimous with the pretightning force of stock, and then will the utility model discloses prestressing force seals the hole pipe subassembly and is fixed in release hole 5.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The utility model provides a high stress tunnel country rock is prestressing force hole sealing pipe subassembly for release hole which characterized in that includes:
the hollow hose is arranged in the pressure relief hole, a first end of the hollow hose is of a closed structure, and a second end of the hollow hose is provided with an opening;
the first end of the medium pipe extends into the hollow hose through the opening, and the second end of the medium pipe is positioned outside the hollow hose and is used for being connected with a high-pressure pipe so as to introduce a high-pressure medium into the hollow hose;
and the one-way stop valve is arranged in the middle of the medium pipe.
2. The pre-stressed hole sealing pipe assembly for the high-stress roadway surrounding rock pressure relief hole according to claim 1, wherein a sealing element is arranged in the opening, and the sealing element is sleeved on the medium pipe and located on the outer side of the one-way stop valve.
3. The pre-stressed sealed hole pipe assembly for the high stress roadway surrounding rock pressure relief hole of claim 2, wherein an outer wall of the second end of the hollow hose is provided with a fastener for fastening the hollow hose with the seal.
4. The pre-stressed sealed hole pipe assembly for the high-stress roadway surrounding rock pressure relief hole according to claim 3, wherein the fastener is a strapping ring.
5. The pre-stressed hole sealing pipe assembly for the high-stress roadway surrounding rock pressure relief hole according to claim 2, further comprising a tray and a locking nut, wherein the tray is sleeved at the second end of the medium pipe and located on the outer side of the sealing element, and the outer diameter of the tray is larger than the aperture of the pressure relief hole and is used for being mounted on the outer side wall of the pressure relief hole; the locking nut is arranged at the second end of the medium pipe and positioned on the outer side of the tray.
6. The pre-stressed hole sealing pipe assembly for the high-stress roadway surrounding rock pressure relief hole according to claim 5, wherein a first threaded section is arranged on the outer wall of the second end of the medium pipe, and the locking nut is connected with the first threaded section.
7. The pre-stressed sealed hole pipe assembly for the high-stress roadway surrounding rock pressure relief hole as claimed in claim 6, further comprising a wrench for screwing the locking nut.
8. The pre-stressed hole sealing pipe assembly for the high-stress roadway surrounding rock pressure relief hole according to claim 1, wherein a second threaded section is arranged on the inner wall of the second end of the medium pipe and is used for being in threaded connection with an interface of the high-pressure pipe.
9. The pre-stressed hole sealing pipe assembly for the high-stress roadway surrounding rock pressure relief hole according to claim 1, wherein reinforcing ribs are arranged in the body of the hollow hose.
10. The pre-stressed sealed hole pipe assembly for the pressure relief hole in the high-stress roadway surrounding rock according to any one of claims 1 to 9, wherein the length of the hollow hose is smaller than the depth of the pressure relief hole and larger than the length of an anchor rod in the high-stress roadway surrounding rock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120680247.8U CN214577012U (en) | 2021-04-02 | 2021-04-02 | Prestressed hole sealing pipe assembly for high-stress roadway surrounding rock pressure relief hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120680247.8U CN214577012U (en) | 2021-04-02 | 2021-04-02 | Prestressed hole sealing pipe assembly for high-stress roadway surrounding rock pressure relief hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214577012U true CN214577012U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120680247.8U Active CN214577012U (en) | 2021-04-02 | 2021-04-02 | Prestressed hole sealing pipe assembly for high-stress roadway surrounding rock pressure relief hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214577012U (en) |
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2021
- 2021-04-02 CN CN202120680247.8U patent/CN214577012U/en active Active
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