Rock slope dangerous rock mass supporting and embedding protection system
Technical Field
The utility model belongs to the technical field of the rock matter side slope is restoreed, especially, relate to a rock matter side slope dangerous rock mass supports and inlays benefit protection system.
Background
Under the action of rainstorm and the like, the scarp or the steep slope of the upper hard rock and the lower soft rock are easy to erode to form a series of concave rock cavities. Dangerous rocks at the upper part of the concave rock cavity are converted into collapse damage along with the continuous development of cracks and the continuous weathering and erosion effects of a soft base. The dangerous rock is overall unstable under the conditions of rainstorm and earthquake, local dangerous rock monomers are unstable, the safety of buildings, roads, tourists and the like below the dangerous rock is affected, and the dangerous rock monomers need to be supported, embedded and repaired for protection construction.
For the protection and treatment of large-area dangerous rock masses, measures such as dangerous rock mass squaring, slope cleaning, concave rock cavity embedding, passive protective net and the like are generally adopted. The construction method has the advantages that the engineering quantity is large, the labor cost is high, local dangerous rock monomers are unstable in the recessed rock cavity embedding and repairing construction process, and certain potential safety hazards are easily caused to constructors.
In view of this, in order to improve the construction quality and efficiency of rocky slope dangerous rock mass support embedment, the invention of the rocky slope dangerous rock mass support embedment protection system which is high in field construction efficiency, good in protection effect and low in safety risk is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rock matter slope dangerous rock mass support inlays mends protection system that site operation efficiency is high, the protecting effect is good, the safety risk is low.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model relates to a rock matter side slope dangerous rock mass supports and inlays benefit protection system, including being used for fixing the dangerous rock mass one row of stock on the rock matter side slope, pack in the stone-making strip stone of thick liquid in the concave rock intracavity, still including being used for placing in the concave rock intracavity and supporting the interim shaped steel cantilever frame of dangerous rock mass, still install the rockfall protection network on the interim shaped steel cantilever frame, the port department in concave rock chamber is fixed with the arc prefabricated plate through the stock, and in the rock matter side slope at concave rock chamber place was stretched into to the tip of this stock, the arc prefabricated plate pressed and covered the stone-making strip stone of thick liquid.
Furthermore, expansion mortar is filled between the grouted barrettes in the recessed rock cavity.
Further, the grouted barrettes are replaced by expansive concrete.
Further, when adopting the expansive concrete to inlay and mend and fill, the port department in concave rock chamber is fixed with through the stock and exempts from to tear open regularization template, it has the injected hole on the regularization template to exempt from to tear open.
Further, interim shaped steel frame of encorbelmenting includes horizontal pole, down tube, arc backup pad, beat in the bottom in concave rock cavity and be equipped with stock and anchor, the tail end of stock and anchor leaks the bottom in concave rock cavity outward, the tail end of anchor has the steel sheet connecting piece, the tail end of stock has the opening cable joint, the one end cooperation of horizontal pole is in the opening cable joint, and the other end passes through the hinge and installs on the steel sheet connecting piece, the steel sheet connecting piece is still connected through the one end of hinge and down tube, the other end of down tube supports in the arc backup pad.
Further, the rockfall protection net comprises a protection rod and a steel wire mesh, a row of protection rods are installed on the arc-shaped supporting plate, the steel wire mesh is installed on the row of protection rods, and the upper end of the protection rod on the outermost side is connected with a ground anchor fixed on the rock slope through an anchor cable.
Furthermore, a construction platform is further installed on the slope bottom of the rock slope and is located obliquely below the concave rock cavity.
Further, construction platform's lower fixed surface has four piece at least pole settings, connects through vertical horizon bar or horizontal horizon bar between the two adjacent pole settings, cast in situ concrete bottom plate has been pour on the rock matter side slope, be fixed with adjustable base on the cast in situ concrete bottom plate, adjustable base has the screw rod, cooperates the sleeve on the screw rod, and the lower extreme of pole setting has the screw thread, and the pole setting cooperation is in the sleeve, has built the cat ladder between construction platform and the cast in situ concrete bottom plate.
Furthermore, the diagonal brace is arranged between the vertical rod and the cast-in-place concrete bottom plate, and the edge of the construction platform is provided with the guardrail.
The utility model discloses following beneficial effect has:
(1) the utility model discloses take interim shaped steel cantilever frame to strut when dangerous rock mass is under construction, reduce the degree of difficulty of dangerous rock mass protection construction, improve the efficiency of construction.
(2) The utility model discloses concave rock chamber upper portion danger rock mass passes through the stock and draws to connect, and concave rock chamber inside adopts to grout the slabstone and supports or fill expansive concrete, can play to fill confined effect to the concave rock chamber, and then improves the wholeness of danger rock mass.
(3) The utility model discloses the concave rock chamber adopts and grout the slabstone and support, through anchor rod drawknot arc prefabricated plate gap filling expansion mortar, improves the wholeness and the stability of danger rock mass.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the supporting, repairing and protecting of the rock slope dangerous rock mass of the utility model;
FIG. 2 is a schematic diagram of the present invention showing the filling of the concave rock cavity with expansive concrete;
FIG. 3 is a schematic view of a grouted bench support of the present invention;
FIG. 4 is a schematic view of the support of the section steel cantilever of the present invention;
FIG. 5 is a schematic view of the protective net of the shaped steel cantilever frame of the present invention
In the drawings, the components represented by the respective reference numerals are listed below:
1-dangerous rock mass, 2-anchor rod, 3-rock slope, 4-concave rock cavity, 5-cantilever anchor rod, 6-temporary steel cantilever, 7-open rope joint, 8-steel plate connecting piece, 9-anchor bolt, 10-base plate, 11-nut, 12-sleeve, 13-ladder, 14-adjustable base, 15-cast-in-place concrete bottom plate, 16-inclined strut, 17-transverse horizontal rod, 18-longitudinal horizontal rod, 19-vertical rod, 20-construction platform, 21-guardrail, 22-expanded concrete, 23-disassembly-free stereotyped template, 24-arc precast slab, 25-expanded mortar, 26-mortar batten stone, 27-arc supporting plate, 28-inclined rod, 29-cross rod, 30-rockfall protective net, 31-guard bar, 32-steel wire mesh, 33-anchor cable, 34-ground anchor, 35-grouting hole and 36-hinge shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Welding technical requirement between the reinforcing bar, concrete placement main points, plain soil tamp, pile foundation construction quality standard etc, the utility model discloses do not describe again tiredly, the key explanation the utility model discloses the embodiment of structure.
Referring to fig. 1-5, the utility model relates to a rock slope dangerous rock supporting and repairing protection system, which comprises a row of anchor rods 2 for fixing dangerous rock 1 on a rock slope 3, a grouted barrette 26 filled in a concave rock cavity 4, the concave rock cavity 4 is arranged at the edge obliquely below the dangerous rock 1, a temporary section steel cantilever frame 6 for placing in the concave rock cavity 4 and supporting the dangerous rock 1, a rockfall protective net 30 is arranged on the temporary section steel cantilever frame 6,
wherein, at the prosthetic in-process of rock matter side slope 3, interim shaped steel cantilever frame 6 is set up for the first time, guarantees in proper order that dangerous rock mass 1 can not slide down or split when dangerous rock mass 1 fixes one row of stock 2 on rock matter side slope 3.
Specifically, the temporary steel cantilever 6 comprises a cross bar 29, an inclined bar 28 and an arc-shaped support plate 27, wherein an anchor rod 2 and an anchor bolt 9 are arranged in the bottom of the concave rock cavity 4 in a drilling mode, tail ends of the anchor rod 2 and the anchor bolt 9 are leaked out of the bottom of the concave rock cavity 4, a steel plate connecting piece 8 is arranged at the tail end of the anchor bolt 9, an opening cable joint 7 is arranged at the tail end of the anchor rod 2, one end of the cross bar 29 is matched in the opening cable joint 7, the other end of the cross bar is installed on the steel plate connecting piece 8 through a hinge shaft 36, the steel plate connecting piece 8 is further connected with one end of the inclined bar 28 through the hinge shaft 36, the other end of the inclined bar 28 abuts against the arc-shaped support plate 27, a hinge seat is arranged on the surface of the concrete steel plate connecting piece 8, and through holes are formed in the end parts of the inclined bar 28 and the cross bar 29.
Then the rockfall protection net 30 is placed, and ground anchors 34 are installed on two sides of the position where the rockfall protection net 30 is arranged.
The rockfall protection net 30 comprises protection rods 31 and steel wire meshes 32, a row of protection rods 31 is mounted on the arc-shaped support plate 27, the steel wire meshes 32 are mounted on the row of protection rods 31, and the upper ends of the protection rods 31 on the outermost sides are connected with ground anchors 34 fixed on the rock slopes 3 through anchor cables 33.
Correspondingly, still assemble work platform, precast cast in situ concrete bottom plate 15 on work platform's the position of buildding, work platform installs in 3 sloping bottoms of rock slopes 4 oblique below in rock cavity, specifically, construction platform 20's lower surface is fixed with four piece at least pole settings 19, connect through vertical horizon bar 18 or horizontal horizon bar 17 between the two adjacent pole settings 19, cast in situ concrete bottom plate 15 has been pour on rock slope 3, be fixed with adjustable base 14 on cast in situ concrete bottom plate 15, adjustable base 14 has the screw rod, cooperation sleeve 12 on the screw rod, the lower extreme of pole setting 19 has the screw thread, pole setting 19 cooperation is in sleeve (12), cat ladder 13 has been built between construction platform 20 and the cast in situ concrete bottom plate 15.
Wherein, bracing 16 is arranged between the upright stanchion 19 and the cast-in-place concrete bottom plate 15, and a guardrail 21 is arranged at the edge of the construction platform 20.
After the dangerous rock mass 1 is fixed, the temporary steel cantilever frame 6 is dismantled, and the concave rock cavity 4 is repaired in a filling manner.
An arc-shaped precast slab 24 is fixed at the port of the concave rock cavity 4 through an anchor rod 2, the end part of the anchor rod 2 extends into the rock slope 3 where the concave rock cavity 4 is located, and the arc-shaped precast slab 24 is pressed and covered with a grouted barred rock 26.
The preferable mortar stone 26 is rock with the strength of more than or equal to 30MPa, and the mortar joint thickness of the mortar stone 26 is not more than 20 mm.
The expansion mortar 25 is filled between the grouted barrettes 26 in the recessed rock cavity 4.
In addition, when the grouted barren rock 26 is not suitable for being used for filling the concave rock cavity 4, the grouted barren rock 26 is replaced by the expanded concrete 22, the disassembly-free stereotyped template 23 is fixed at the port of the corresponding concave rock cavity 4 through the anchor rod 2, the disassembly-free stereotyped template 23 is provided with a grouting hole 35, and grout is injected into the concave rock cavity 4 through the grouting hole 35.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," 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 the invention. In this specification, the schematic representations of the terms used above do not necessarily 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.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.