CN113638751A - Prefabricated pier stud reinforced roadway support method - Google Patents
Prefabricated pier stud reinforced roadway support method Download PDFInfo
- Publication number
- CN113638751A CN113638751A CN202111034494.1A CN202111034494A CN113638751A CN 113638751 A CN113638751 A CN 113638751A CN 202111034494 A CN202111034494 A CN 202111034494A CN 113638751 A CN113638751 A CN 113638751A
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- Prior art keywords
- prefabricated pier
- pier stud
- bag
- prefabricated
- support method
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/02—Non-telescopic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
Abstract
The invention provides a prefabricated pier stud reinforced roadway support method, wherein the prefabricated pier stud replaces an underground cast-in-place pier stud, so that the construction process is greatly optimized; the invention reduces concrete construction equipment, greatly reduces equipment investment, sleeves the top of the prefabricated pier stud with the top-contacting bag, can ensure effective top contacting under the action of grouting pressure, and improves the supporting effect on the underground top plate after the filling material in the top-contacting bag is hardened. On the other hand, the method has the advantages of simple process, less investment, low cost, reduction of labor and efficiency, high degree of mechanization and good roof-contacting effect.
Description
Technical Field
The invention relates to the technical field of coal mine roadway support, in particular to a prefabricated pier stud reinforced roadway support method.
Background
The coal mine roadway is generally supported by anchor net cables, single body reinforced support is adopted when the surrounding rock pressure is high, and under some engineering geological conditions, the single body reinforced support still cannot meet the requirements due to the high surrounding rock pressure, such as the fully mechanized coal mining face through the empty roadway, the gob-side entry retaining roadway support and the like. At present, when a fully mechanized mining face passes through an empty roadway, underground cast-in-place concrete pillars are generally adopted for reinforcing support, the main process is that concrete is poured by a vertical mold and a pump, the underground concrete needs working procedures of concrete feeding, stirring, pumping and the like, concrete equipment needs to be purchased, the number of operators is large, the working procedures are multiple, the hardening period of the concrete is long, and the reinforcing support cannot be provided in time. In order to reduce the working procedures of pier column reinforcing and supporting, reduce equipment investment and timely support, a method for prefabricating a pier column, mechanizing a stand column and timely reinforcing and supporting needs to be developed.
Disclosure of Invention
Aiming at the problems of more working procedures, higher construction cost and long concrete hardening period existing in the prior art of supporting by adding a cast-in-advance concrete pier stud, the invention provides a prefabricated pier stud reinforced roadway supporting method, which omits concrete construction equipment, greatly optimizes the construction process, improves the degree of mechanization and effectively reduces the construction cost.
The invention is realized by the following technical scheme:
a prefabricated pier stud reinforced roadway support method comprises the following steps:
manufacturing prefabricated pier columns and top connection bags;
transporting the prefabricated pier stud and the top connection bag to an underground area needing pier stud reinforcement support;
vertically erecting the prefabricated pier stud, sleeving the bottom opening end of the top bag on the top of the prefabricated pier stud, connecting the top closed end of the top bag to the metal net of the underground top plate, and fixing the periphery of the bottom opening end of the top bag on the pier body of the prefabricated pier stud;
and filling a filling material into the top contacting bag until the top contacting bag is contacted with the underground roof, so as to realize the support of the underground roof.
Preferably, the top bag is a cylindrical structure, wherein the side part of the cylindrical body is provided with a grouting opening.
Preferably, the material of the top-contacting bag is woven fiber cloth, wherein the woven fiber cloth is provided with micropores.
Preferably, the top of the top-contacting bag is bound on the metal net of the top plate through iron wires, the periphery of the opening end of the bottom of the top-contacting bag is sleeved on the top of the prefabricated pier stud, and the top-contacting bag and the pier body are bound and fixed through the iron wires.
Preferably, the prefabricated pier column is made of reinforced concrete.
Preferably, the bottom of prefabricated pier stud is equipped with the steady seat, and the external diameter of steady seat is greater than the pier shaft external diameter of prefabricated pier stud.
Preferably, the pier body of the prefabricated pier stud is provided with a lifting ring.
Preferably, the material of the filling material adopts quick-hardening concrete, quick-hardening mortar or yielding material.
Preferably, the prefabricated pier stud is forked and erected at a position needing reinforced support by a hydraulic forklift.
Preferably, the filling material is injected into the top-connected bag by a manual injection pump.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a prefabricated pier stud reinforced roadway support method, wherein the prefabricated pier stud replaces an underground cast-in-place pier stud, so that the construction process is greatly optimized; the invention reduces concrete construction equipment, greatly reduces equipment investment, sleeves the top of the prefabricated pier stud with the top-contacting bag, can ensure effective top contacting under the action of grouting pressure, and improves the supporting effect on the underground top plate after the filling material in the top-contacting bag is hardened. On the other hand, the method has the advantages of simple process, less investment, low cost, reduction of labor and efficiency, high degree of mechanization and good roof-contacting effect.
Furthermore, the top connection bag is of a cylindrical structure, and the side part of the top connection bag is provided with a grouting port, so that filling materials can be conveniently injected into the top connection bag and can be prevented from being lost.
Furthermore, the top-contacting bag is made of woven fiber cloth, wherein the woven fiber cloth is provided with micropores, so that water and slurry can permeate and cannot permeate, and excess water and air are forced out, thereby realizing dense top-contacting and effective supporting.
Furthermore, the top of the top-contacting bag is bound on the metal net of the top plate through iron wires, the bottom opening end periphery of the top-contacting bag is sleeved on the top of the prefabricated pier stud, and the top-contacting bag and the pier body are bound and fixed through the iron wires, so that the top contacting performance and the shape of the top-contacting bag are effectively improved, and unrealistic top contacting, shape collapse and slurry leakage are avoided.
Furthermore, the prefabricated pier column is made of reinforced concrete, so that the strength of the pier column can be improved.
Furthermore, the bottom of prefabricated pier stud is equipped with the steady seat, and the external diameter of steady seat is greater than the pier shaft external diameter of prefabricated pier stud, has improved pier stud stability.
Furthermore, the filling material adopts quick-hardening concrete, quick-hardening mortar or yielding material, and can provide support in time.
Furthermore, the prefabricated pier stud is erected at the position where supporting needs to be strengthened through a hydraulic forklift, the equipment is simple, and the investment is low.
Furthermore, the top connection bag is filled with filling materials through a grouting pump, the grouting pump is a manual grouting pump, equipment is simple, investment is low, and the manual grouting pump can meet requirements due to the fact that the top connection bag is small in size and is 0.05-0.1 cubic meter.
Drawings
FIG. 1 is a sectional view of a prefabricated pier stud reinforced roadway support according to the present invention;
FIG. 2 is a three-dimensional schematic view of the hand-operated hydraulic forklift carrying pier stud of the invention;
fig. 3 is a three-dimensional schematic view of a top-connected bag of the present invention.
In the figure: 1-prefabricating a pier stud; 2-lifting a ring; 3-connecting a top bag; 4-grouting port; 5-hydraulic forklift; 6-filling material.
Detailed Description
In order to make the technical solutions of 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 drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, in one embodiment of the present invention, a prefabricated pier stud reinforced roadway supporting method is provided, which omits concrete construction equipment, greatly optimizes the construction process, improves the degree of mechanization, and effectively reduces the construction cost.
Specifically, the prefabricated pier stud reinforced roadway supporting method comprises the following steps:
and 4, filling the top contacting bag 3 with filling materials 6 until the top contacting bag 3 is contacted with the underground roof, and supporting the underground roof.
Specifically, the top bag 3 is of a cylindrical structure, wherein the side part of the cylinder body is provided with a grouting port 4, so that filling materials can be conveniently contained, and the filling materials are prevented from being lost.
Specifically, the side part of the top-contacting bag 3 is provided with a grouting port 4, so that filling materials can be conveniently injected into the top-contacting bag, and the loss of the filling materials is avoided.
Specifically, the top-contacting bag 3 is made of woven fiber cloth, wherein the woven fiber cloth is provided with micropores, so that water and slurry can permeate and cannot permeate, excessive water and air are forced out, and dense top-contacting and effective supporting are realized.
Specifically, the top of the top-contacting bag 3 is bound on the metal net of the top plate through an iron wire; connect the bottom open end border of a bag 3 to cup joint at the top of prefabricated pier stud 1 to adopt the iron wire will connect a bag 3 and pier shaft ligature fixed, effectively improved the stability of connecting a bag between roof and prefabricated pier stud, avoid dropping.
Specifically, the bottom of prefabricated pier stud 1 is equipped with the steady seat, and the external diameter of steady seat is greater than the pier shaft external diameter of prefabricated pier stud 1, has improved pier stud stability.
Specifically, set up rings 2 on prefabricated pier stud 1's the pier shaft, it is upright to pull up prefabricated pier stud 1 by the bottom plate through rings 2.
Specifically, erect in the position that needs strengthen strutting through hydraulic fork truck 5 with prefabricated pier stud 1 fork, hydraulic fork truck 5 is manual hydraulic fork truck, and equipment is simple, the small investment.
Specifically, fill material 6 is injected into the top connection bag 3 through a manual grouting pump, the grouting pump is the manual grouting pump, equipment is simple, investment is low, and the manual grouting pump can meet requirements due to the fact that the top connection bag is small in size and is 0.05-0.1 cubic meter.
The prefabricated pier column 1 is made of reinforced concrete, and the filling material 6 is made of quick-hardening concrete, quick-hardening mortar or yielding material, so that support can be provided in time.
Examples
The fully mechanized mining face is inclined to a roadway, the height of the roadway is 2.0m, the width of the roadway is 5.4m, the roadway is supported by anchor net cables, and the roadway is reinforced by pier columns under the influence of advanced mining, wherein the distance between the pier columns is 1.3m, and the row distance is 3 m.
According to the fig. 1, 2 and 3, the prefabricated pier stud reinforced roadway support method provided by the invention comprises the following steps:
and 5, injecting rapid-hardening mortar into the top connection bag 3 through a grouting port by a manual grouting pump until the top connection is realized, and supporting the top plate after the rapid-hardening mortar is hardened.
In conclusion, the invention provides a prefabricated pier stud reinforced roadway support method, the prefabricated pier stud replaces an underground cast-in-place pier stud, and the construction process is greatly optimized; the invention reduces concrete construction equipment, greatly reduces equipment investment, sleeves the top of the prefabricated pier stud with the top-contacting bag, can ensure effective top contacting under the action of grouting pressure, and improves the supporting effect on the underground top plate after the filling material in the top-contacting bag is hardened. On the other hand, the method has the advantages of simple process, less investment, low cost, reduction of labor and efficiency, high degree of mechanization and good roof-contacting effect.
Meanwhile, the invention can be widely applied to the fields of coal mines, metallurgical mines, underground buildings, national defense engineering and the like, and on the other hand, the invention realizes the reinforcement of roadway support by prefabricated pier stud, and has the advantages of high construction speed, good top connection effect, less equipment and personnel and small investment.
The method comprises the steps of prefabricating a concrete pier stud and a top connection bag on the ground according to design requirements, carrying the prefabricated pier stud and the top connection bag to the underground through a transport vehicle, carrying the prefabricated pier stud to a pier stud supporting position through a hydraulic forklift, erecting the prefabricated pier stud through the hydraulic forklift, sleeving the top connection bag on the prefabricated pier stud, injecting a filling material into the top connection bag through a grouting port through a grouting pump, and supporting a top plate through the pier stud after the filling material is hardened. The method has the advantages of simple process, good top-contacting effect, less equipment and operating personnel and quick construction, and is widely applied to the fields of coal mine roadway reinforced support, gob-side entry retaining roadside support, underground engineering and the like.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A prefabricated pier stud reinforced roadway support method is characterized by comprising the following steps:
manufacturing a prefabricated pier stud (1) and a top connection bag (3);
the prefabricated pier stud (1) and the roof connecting bag (3) are transported to an underground area needing pier stud reinforcement and support;
vertically erecting the prefabricated pier stud (1), sleeving the bottom opening end of the top connection bag (3) on the top of the prefabricated pier stud (1), connecting the top closed end of the top connection bag (3) to a metal net of an underground top plate, and fixing the periphery of the bottom opening end of the top connection bag (3) on the pier body of the prefabricated pier stud (1);
and filling a filling material (6) into the top contacting bag (3) until the top contacting bag (3) is contacted with the underground roof, so as to realize the support of the underground roof.
2. The prefabricated pier column reinforced roadway support method according to claim 1, wherein the top connection bag (3) is of a cylindrical structure, and the side part of the cylindrical structure is provided with a grouting opening (4).
3. The prefabricated pier stud reinforced roadway support method according to claim 1, wherein the material of the top-contacting bag (3) is woven fiber cloth, and the woven fiber cloth is provided with micropores.
4. The prefabricated pier column reinforced roadway support method according to claim 1, wherein the top of the top connection bag (3) is bound on a metal mesh of a top plate through iron wires, the periphery of the bottom opening end of the top connection bag (3) is sleeved on the top of the prefabricated pier column (1), and the top connection bag (3) and a pier body are bound and fixed through the iron wires.
5. The precast pier stud reinforced roadway support method according to claim 1, wherein the precast pier stud (1) is made of reinforced concrete.
6. The prefabricated pier column reinforced roadway supporting method according to claim 1, wherein a stabilizing seat is arranged at the bottom of the prefabricated pier column (1), and the outer diameter of the stabilizing seat is larger than the outer diameter of a pier body of the prefabricated pier column (1).
7. The prefabricated pier stud reinforced roadway support method according to claim 1, wherein hoisting rings (2) are arranged on the pier body of the prefabricated pier stud (1).
8. The prefabricated pier column reinforced roadway support method according to claim 1, wherein the material of the filling material (6) is quick-hardening concrete, quick-hardening mortar or yielding material.
9. The prefabricated pier column reinforced roadway support method according to claim 1, wherein the prefabricated pier column (1) is forked and erected at a position needing reinforced support by a hydraulic forklift (5).
10. A prefabricated pier column reinforced roadway support method according to claim 1, wherein the filling material (6) is injected into the roof-contacting bag (3) by a manual grouting pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111034494.1A CN113638751A (en) | 2021-09-03 | 2021-09-03 | Prefabricated pier stud reinforced roadway support method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111034494.1A CN113638751A (en) | 2021-09-03 | 2021-09-03 | Prefabricated pier stud reinforced roadway support method |
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| Publication Number | Publication Date |
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| CN113638751A true CN113638751A (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111034494.1A Pending CN113638751A (en) | 2021-09-03 | 2021-09-03 | Prefabricated pier stud reinforced roadway support method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4107889A (en) * | 1976-03-01 | 1978-08-22 | Gonsalves, Santucci, Inc. | Foundation system |
| CN103161480A (en) * | 2013-03-14 | 2013-06-19 | 中国矿业大学 | Method for actively supporting lane side filling gob-side entry retaining |
| CN103168147A (en) * | 2010-08-02 | 2013-06-19 | 克雷格·道格拉斯·巴奈特 | An improved prop for mining, construction and the like |
| CN103334774A (en) * | 2013-06-05 | 2013-10-02 | 惠兴田 | Externally-anchored mining anchor column and construction method thereof |
| CN104500109A (en) * | 2014-12-19 | 2015-04-08 | 北京瑞诺安科新能源技术有限公司 | Underground support pillar and construction method thereof |
| CN105019924A (en) * | 2015-07-30 | 2015-11-04 | 中国矿业大学 | Strong roof support pier column and method for protecting section coal pillar |
| CN110130926A (en) * | 2019-05-24 | 2019-08-16 | 翟文 | A kind of coal mine fully-mechanized mining working comprehensive support method |
| CN112627864A (en) * | 2020-12-16 | 2021-04-09 | 中煤科工开采研究院有限公司 | Support device for underground coal mine |
-
2021
- 2021-09-03 CN CN202111034494.1A patent/CN113638751A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4107889A (en) * | 1976-03-01 | 1978-08-22 | Gonsalves, Santucci, Inc. | Foundation system |
| CN103168147A (en) * | 2010-08-02 | 2013-06-19 | 克雷格·道格拉斯·巴奈特 | An improved prop for mining, construction and the like |
| CN103161480A (en) * | 2013-03-14 | 2013-06-19 | 中国矿业大学 | Method for actively supporting lane side filling gob-side entry retaining |
| CN103334774A (en) * | 2013-06-05 | 2013-10-02 | 惠兴田 | Externally-anchored mining anchor column and construction method thereof |
| CN104500109A (en) * | 2014-12-19 | 2015-04-08 | 北京瑞诺安科新能源技术有限公司 | Underground support pillar and construction method thereof |
| CN105019924A (en) * | 2015-07-30 | 2015-11-04 | 中国矿业大学 | Strong roof support pier column and method for protecting section coal pillar |
| CN110130926A (en) * | 2019-05-24 | 2019-08-16 | 翟文 | A kind of coal mine fully-mechanized mining working comprehensive support method |
| CN112627864A (en) * | 2020-12-16 | 2021-04-09 | 中煤科工开采研究院有限公司 | Support device for underground coal mine |
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