阅读说明：本技术 自适应可复用充填挡墙及其施工方法 (Self-adaptive reusable filling retaining wall and construction method thereof ) 是由 李兵磊 刘青灵 龚锦睿 李嘉宁 胡洪源 于 2021-01-27 设计创作，主要内容包括：本发明提供一种自适应可复用充填挡墙结构,包括位于巷道内且由前至后依次设置的受力骨架、钢筋网层及滤水土工布层,所述受力骨架包括竖撑杆结构以及位于竖撑杆结构后方的横撑杆结构,所述竖撑杆结构下方设有用以将竖撑杆结构顶起固定的驱动装置。本发明设计合理,结构简单,正确地分析充填挡墙的受力状态,设计合适的挡墙结构及尺寸,可降低矿山充填成本、提高采充效率和充填质量,进而提高矿山生产的安全性。(The invention provides a self-adaptive reusable filling retaining wall structure which comprises a stress framework, a steel bar net layer and a water filtering geotextile layer, wherein the stress framework, the steel bar net layer and the water filtering geotextile layer are positioned in a roadway and are sequentially arranged from front to back, the stress framework comprises a vertical support rod structure and a transverse support rod structure positioned behind the vertical support rod structure, and a driving device for jacking and fixing the vertical support rod structure is arranged below the vertical support rod structure. The invention has reasonable design and simple structure, correctly analyzes the stress state of the filling retaining wall, designs the appropriate retaining wall structure and size, can reduce the mine filling cost, improves the mining and filling efficiency and the filling quality, and further improves the safety of mine production.)

1. The utility model provides a multiplexing barricade that fills of self-adaptation, its characterized in that, including being located the tunnel and by preceding atress skeleton, reinforcing bar net layer and the drainage geotechnological cloth layer that sets gradually after to, the atress skeleton is including erecting the vaulting pole structure and being located the stull structure at vertical brace structure rear, it is equipped with and is used for erecting the drive arrangement that vaulting pole structure jack-up is fixed to erect vaulting pole structure below.

2. The adaptive reusable filling retaining wall according to claim 1, wherein the vertical supporting rod structure comprises a plurality of vertical supporting rod groups arranged at intervals along the width direction of the roadway, each vertical supporting rod group is composed of at least two vertical supporting rods, adjacent vertical supporting rods are connected by a connecting sleeve, and the vertical supporting rods are sleeved in the connecting sleeve and penetrate through the connecting sleeve and the vertical supporting rods by pins.

3. The adaptive reusable filling retaining wall according to claim 2, wherein a torus is welded to the outside of the vertical supporting rod along the length direction of the vertical supporting rod, and a plurality of through holes are formed in the circumference of the torus.

4. The adaptive reusable filling retaining wall according to claim 3, wherein the transverse supporting rod structure comprises a plurality of transverse supporting rod groups arranged at intervals along the height direction of the roadway, each transverse supporting rod group comprises at least two transverse supporting rods, adjacent transverse supporting rods are connected by a connecting sleeve, the transverse supporting rods are sleeved in the connecting sleeves and penetrate through the connecting sleeves and the transverse supporting rods by pins, and one ends of the transverse supporting rods, far away from the connecting sleeves, are fixedly connected with the annular bodies; wherein two ends of the two transverse strut groups respectively extend to the drill holes on two sides of the roadway and are fixed.

5. The adaptive reusable-filling retaining wall of claim 2, wherein each vertical brace has a plurality of vertical pin holes at both ends along the length of the vertical brace.

6. The adaptive reusable filling retaining wall of claim 4, wherein one end of the cross brace is provided with a through round hole, and the other end of the cross brace is provided with a plurality of cross pin holes along the length direction of the cross brace.

7. The adaptive reusable filling retaining wall of claim 2 or 4, wherein the connecting sleeve is provided with a plurality of connecting holes along the length direction of the connecting sleeve.

8. The adaptive reusable-filling retaining wall of claim 4, wherein the driving means is a hydraulic jack and a tray is provided between the hydraulic jack and the vertical brace structure.

9. A construction method using the adaptive reusable-filling retaining wall according to claim 8, comprising the steps of: (1) firstly constructing a filling retaining wall in the process of filling the access; after the stoping of the access is finished, the measuring personnel mark the position of the retaining wall to be constructed and filled by paying off, and the filling operation personnel level the bottom plate; (2) an air leg type drilling machine is adopted to match with a drill bit with the diameter of 38-42 mm, two drill holes with the depth of 20-30 cm are drilled on two sides of a roadway respectively, the distance between the first hole and a bottom plate is 0.4m, and the distance between the second hole and the bottom plate is 1.6m (the position of the waist line of the approach); (3) firstly, uniformly distributing three hydraulic jacks along the width direction of a roadway, then installing a vertical strut group, wherein the vertical strut group is connected with the jacks by adopting a tray, and the vertical strut is movably connected with the vertical strut by adopting a connecting sleeve and is fixed by adopting a pin; (4) after the vertical support rod structure is installed, the hydraulic jack is started, and prestress is applied to the vertical support rod, so that the vertical support rod is vertically fixed; (5) the method comprises the following steps that transverse strut structures are installed, adjacent transverse struts are connected through connecting sleeves and fixed through pins to form transverse strut groups, two transverse strut groups are installed at positions which are 0.4m and 1.6m higher than a bottom plate respectively, two ends of each transverse strut group are inserted into drilled holes of a roadway and fixed respectively, and two ends of the rest transverse strut groups are fixedly connected with a ring body located on a vertical strut through pins respectively; (6) after the stressed frameworks forming the filled retaining wall are installed, installing a reinforcing mesh and water-filtering geotextile, and connecting the reinforcing mesh and the water-filtering geotextile into the through holes of the annular bodies of the vertical support rods in a binding belt manner, so that the reinforcing mesh and the water-filtering geotextile are fixed behind the stressed frameworks of the filled retaining wall; (7) after the filling retaining wall is installed, the filling operation of an access stope is started, when the filling body is dehydrated and solidified to reach the strength meeting the safety requirement (generally 2-5 days), the filling retaining wall is disassembled, the hydraulic jack is started again, the prestress of the vertical supporting rod applied during installation is released, and then the disassembly of the filling retaining wall framework is completed.

Technical Field

The invention relates to a self-adaptive reusable filling retaining wall and a construction method thereof.

Background

Along with gradual depletion of shallow-buried easy-mining mineral resources, difficult-mining mineral deposits and deep mineral deposits become necessary for future mining of mineral resources. Governments and the public require the development of mineral resources to ensure the safety of operating personnel and minimize the disturbance to the environment. Therefore, the contradiction between the ever-increasing huge demand of mineral resources and the annual increase of resource exploitation difficulty and safety and environmental protection pressure becomes more and more prominent. Under the background, the filling mining method is more and more widely applied in the practical production due to safe operation, capability of delaying surface subsidence, capability of effectively preventing engineering geological disasters such as deep rock burst and the like. In the filling mining process, the construction of a filling retaining wall is an important work which needs to be completed before filling. The quality of the filling retaining wall construction quality influences the efficiency of the filling engineering and the filling quality. In part of mines, due to the fact that the retaining wall is not properly constructed, the problems of slurry leakage, sand leakage and the like often occur in the filling process, and the accidents of whole collapse of the retaining wall and the like seriously occur, so that the problems of underground environment pollution, difficulty in sand leakage treatment and the like are caused. In order to improve the safety of part of mines, the thickness of a retaining wall is increased, the material consumption is increased, the construction time is prolonged, and the mining and filling operation efficiency is low.

The prior retaining wall comprises a block retaining wall, a concrete retaining wall, a wood retaining wall and a steel wire rope flexible retaining wall. The block retaining wall comprises a red brick retaining wall, a concrete precast block retaining wall, a hollow brick retaining wall and the like. The block retaining wall has poor bending resistance, is easy to generate local displacement deformation to cause collapse and slurry leakage, and has thick and large wall body, large block transportation amount and poor water filtering effect. The concrete retaining wall is high in strength and good in integrity, but a foundation needs to be poured by excavating a trench, formworks are erected on two sides along with the increase of the pouring height, and due to the fact that concrete has certain gelation and shrinkage, the strength of the roadway wall is not high, plugging is not tight, slurry leakage and integral wall pouring accidents are prone to happening, the maintenance period is long, and the construction cost is high. The wooden retaining wall is a retaining wall form which is widely applied in the current mine, greatly reduces the weight of the retaining wall, but has the disadvantages of large wood consumption and high cost in production and use; the wood is required to be processed one by one according to the actual size on site, and the requirement on the quality of the wood is high; the impact resistance is poor, the contact with the wall of the roadway is not tight, a sedimentation tank is often required to be arranged on the outer side, and because the round wood and the back plate are bound and fixedly connected by the nails and the iron wires, the recovery is difficult, and the reuse rate is low. The steel wire rope flexible retaining wall is a novel retaining wall developed in recent years, and compared with the previous retaining wall forms, the steel wire rope flexible retaining wall is applied to a plurality of mines, and has good water filtering effect and low installation labor intensity. However, since a large number of anchor rods for fixing reinforcing bars need to be anchored into surrounding rocks and the anchor rods and the reinforcing bars are welded one by one, a large number of water filtering materials such as anchor rods and nylon cloth need to be tied up on a reinforcing mesh, and the tunnel wall plugging device has the defects of poor tunnel wall plugging effect, slurry leakage and the like, and is low in recycling rate. Therefore, the stress state of the filling retaining wall is accurately analyzed, and the retaining wall structure and the size are properly designed, so that the mine filling cost can be reduced, the mining and filling efficiency and the filling quality are improved, and the safety of mine production is further improved.

Disclosure of Invention

In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a self-adaptive reusable filling retaining wall and a construction method thereof.

The water-filtering geotextile comprises a stressed framework, a steel bar net layer and a water-filtering geotextile layer which are positioned in a roadway and sequentially arranged from front to back, wherein the stressed framework comprises a vertical support rod structure and a transverse support rod structure positioned behind the vertical support rod structure, and a driving device for jacking and fixing the vertical support rod structure is arranged below the vertical support rod structure.

Furthermore, the vertical support rod structure comprises a plurality of vertical support rod groups arranged at intervals along the width direction of the roadway, each vertical support rod group consists of at least two vertical support rods, connecting sleeves are adopted between adjacent vertical support rods for connection, and the vertical support rods are sleeved in the connecting sleeves and adopt pins to penetrate through the connecting sleeves and the vertical support rods.

Furthermore, the outside welding of vertical braces along vertical braces length direction has the tourus, tourus circumference is equipped with a plurality of through-holes.

Furthermore, the transverse supporting rod structure comprises a plurality of transverse supporting rod groups arranged at intervals along the height direction of the roadway, each transverse supporting rod group consists of at least two transverse supporting rods, adjacent transverse supporting rods are connected by adopting connecting sleeves, the transverse supporting rods are sleeved in the connecting sleeves and penetrate through the connecting sleeves and the transverse supporting rods by adopting pins, and one ends of the transverse supporting rods, far away from the connecting sleeves, are fixedly connected with the torus; wherein two ends of the two transverse strut groups respectively extend to the drill holes on two sides of the roadway and are fixed.

Furthermore, a plurality of vertical pin holes are formed in the two ends of each vertical support rod along the length direction of the vertical support rod.

Furthermore, a through round hole is formed in one end of the transverse supporting rod, and a plurality of transverse pin holes are formed in the other end of the transverse supporting rod along the length direction of the transverse supporting rod.

Furthermore, the connecting sleeve is provided with a plurality of connecting holes along the length direction of the connecting sleeve.

Furthermore, the driving device is a hydraulic jack, and a tray is arranged between the hydraulic jack and the vertical support rod structure.

Further, the construction method of the self-adaptive reusable filling retaining wall comprises the following steps: (1) firstly constructing a filling retaining wall in the process of filling the access; after the stoping of the access is finished, the measuring personnel mark the position of the retaining wall to be constructed and filled by paying off, and the filling operation personnel level the bottom plate; (2) an air leg type drilling machine is adopted to match with a drill bit with the diameter of 38-42 mm, two drill holes with the depth of 20-30 cm are drilled on two sides of a roadway respectively, the distance between the first hole and a bottom plate is 0.4m, and the distance between the second hole and the bottom plate is 1.6m (the position of the waist line of the approach); (3) firstly, uniformly distributing three hydraulic jacks along the width direction of a roadway, then installing a vertical strut group, wherein the vertical strut group is connected with the jacks by adopting a tray, and the vertical strut is movably connected with the vertical strut by adopting a connecting sleeve and is fixed by adopting a pin; (4) after the vertical support rod structure is installed, the hydraulic jack is started, and prestress is applied to the vertical support rod, so that the vertical support rod is vertically fixed; (5) the method comprises the following steps that transverse strut structures are installed, adjacent transverse struts are connected through connecting sleeves and fixed through pins to form transverse strut groups, two transverse strut groups are installed at positions which are 0.4m and 1.6m higher than a bottom plate respectively, two ends of each transverse strut group are inserted into drilled holes of a roadway and fixed respectively, and two ends of the rest transverse strut groups are fixedly connected with a ring body located on a vertical strut through pins respectively; (6) after the stressed frameworks forming the filled retaining wall are installed, installing a reinforcing mesh and water-filtering geotextile, and connecting the reinforcing mesh and the water-filtering geotextile into the through holes of the annular bodies of the vertical support rods in a binding belt manner, so that the reinforcing mesh and the water-filtering geotextile are fixed behind the stressed frameworks of the filled retaining wall; (7) after the filling retaining wall is installed, the filling operation of an access stope is started, when the filling body is dehydrated and solidified to reach the strength meeting the safety requirement (generally 2-5 days), the filling retaining wall is disassembled, the hydraulic jack is started again, the prestress of the vertical supporting rod applied during installation is released, and then the disassembly of the filling retaining wall framework is completed.

Compared with the prior art, the invention has the following beneficial effects: the invention has reasonable design and simple structure, correctly analyzes the stress state of the filling retaining wall, designs the appropriate retaining wall structure and size, can reduce the mine filling cost, improve the mining and filling efficiency and the filling quality, and further improve the safety of mine production;

the construction method comprises the following steps of sequentially installing vertical supporting rod structures, transverse supporting rod structures, steel bar net layers and water filtering geotextile layers during construction, filling the retaining wall, starting to perform filling operation of an access stope after the retaining wall is installed, and when a filling body is dehydrated and solidified to reach the strength meeting the safety requirement (generally 2-5 days), beginning to disassemble and fill the retaining wall, releasing the prestress of the vertical supporting rods applied during installation, and then completing the disassembly of filling the retaining wall framework.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a vertical stay bar according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a set of vertical braces according to an embodiment of the present invention;

FIG. 4 is a schematic view of a cross brace in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a cross brace assembly according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a connecting sleeve according to an embodiment of the present invention;

in the figure: 1-stressed framework, 11-vertical brace rod structure, 110-vertical brace rod, 111-vertical pin hole, 112-ring body, 1121-through hole, 12-transverse brace rod structure, 120-transverse brace rod, 121-through round hole, 122-transverse pin hole, 2-connecting sleeve, 21-connecting hole, 3-hydraulic jack, 4-tray, 5-reinforced bar net layer, 6-roadway and 7-approach.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example (b): as shown in fig. 1-6, a multiplex barricade structure that fills of self-adaptation is provided, including being located the tunnel and by preceding atress skeleton 1, reinforcing bar net layer 5 and the drainage geotechnological cloth layer that sets gradually after to, atress skeleton 1 includes erectting strut structure 11 and the stull structure 12 that is located erectting strut structure rear, erectting strut structure below is equipped with and is used for the fixed drive arrangement in erectting strut structure jack-up.

In this embodiment, the vertical support rod structure 11 includes a plurality of vertical support rod groups that set up along the width direction interval in tunnel, and every vertical support rod group comprises two at least vertical support rod 110, adopts adapter sleeve 2 to connect between the adjacent vertical support rod, vertical support rod cover income adapter sleeve inside and adopt the pin to run through the adapter sleeve and vertical support rod.

The vertical support rod is externally welded with a ring body 112 along the length direction of the vertical support rod, and a plurality of through holes 1121 are uniformly formed in the circumferential direction of the ring body so as to conveniently connect the steel bar net layer and the water filtering geotextile layer.

The two ends of the vertical stay bar 110 are provided with a plurality of vertical pin holes 111 along the length direction of the vertical stay bar for matching with the connecting holes of the connecting sleeve to be beneficial to the penetration and fixation of the pins.

In this embodiment, the optimal mesh size of the reinforcing mesh layer is 2.0cm, and the draining geotextile layer is arranged on the innermost layer of the filling retaining wall.

In this embodiment, the transverse supporting rod structure 12 includes a plurality of transverse supporting rod groups arranged at intervals along the height direction of the roadway, each transverse supporting rod group is composed of at least two transverse supporting rods 121, adjacent transverse supporting rods are connected by using a connecting sleeve 2, the transverse supporting rods are sleeved in the connecting sleeve and penetrate through the connecting sleeve and the transverse supporting rods by using pins, and one ends of the transverse supporting rods far away from the connecting sleeve are fixedly connected with the torus 112;

wherein two ends of the two transverse strut groups respectively extend into drill holes on two sides of the roadway and are fixed; drilling two drilled holes with the depth of 20-30 cm at two sides of the roadway respectively, wherein the distance between a first hole and the bottom plate is 0.4m, the distance between a second hole and the bottom plate is 1.6m (the position of the waist line of an access 7), and two ends of two transverse strut groups are inserted into the drilled holes respectively to form fixed constraint; the other transverse rod groups are uniformly arranged according to the height interval of 40 cm.

One end of the transverse supporting rod 120 is provided with a through round hole 121, and the other end of the transverse supporting rod is provided with a plurality of transverse pin holes 122 along the length direction of the transverse supporting rod, so as to be matched with the connecting holes of the connecting sleeve for use, and be beneficial to the pin to be penetrated and fixed.

The connecting sleeve 2 is provided with a plurality of connecting holes 21 along the length direction of the connecting sleeve for the pins to penetrate through.

In this embodiment, the driving device is a hydraulic jack 3, and a tray 4 is arranged between the hydraulic jack and the vertical support rod structure.

In this embodiment, during construction, a filling retaining wall is first constructed in the course of filling the approach; after the stoping of the access is finished, the measuring personnel mark the position of the retaining wall to be constructed and filled by paying off, and the filling operation personnel level the bottom plate; an air leg type drilling machine is adopted to match with a drill bit with the diameter of 38-42 mm, two drill holes with the depth of 20-30 cm are drilled on two sides of a roadway respectively, the distance between the first hole and a bottom plate is 0.4m, and the distance between the second hole and the bottom plate is 1.6m (the position of the waist line of the approach); firstly, uniformly distributing three hydraulic jacks along the width direction of a roadway, then installing a vertical strut group, wherein the vertical strut group is connected with the jacks by adopting a tray, and the vertical strut is movably connected with the vertical strut by adopting a connecting sleeve and is fixed by adopting a pin; after the vertical support rod structure is installed, the hydraulic jack is started, and prestress is applied to the vertical support rod, so that the vertical support rod is vertically fixed; the method comprises the following steps that transverse strut structures are installed, adjacent transverse struts are connected through connecting sleeves and fixed through pins to form transverse strut groups, two transverse strut groups are installed at positions which are 0.4m and 1.6m higher than a bottom plate respectively, two ends of each transverse strut group are inserted into drilled holes of a roadway and fixed respectively, and two ends of the rest transverse strut groups are fixedly connected with a ring body located on a vertical strut through pins respectively; after the stressed frameworks forming the filled retaining wall are installed, installing a reinforcing mesh and water-filtering geotextile, and connecting the reinforcing mesh and the water-filtering geotextile into the through holes of the annular bodies of the vertical support rods in a binding belt manner, so that the reinforcing mesh and the water-filtering geotextile are fixed behind the stressed frameworks of the filled retaining wall; after the filling retaining wall is installed, the filling operation of an access stope is started, when the filling body is dehydrated and solidified to reach the strength meeting the safety requirement (generally 2-5 days), the filling retaining wall is disassembled, the hydraulic jack is started again, the prestress of the vertical supporting rod applied during installation is released, and then the disassembly of the filling retaining wall framework is completed.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.

Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.

Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.