CN118007670A - Rock slope dangerous rock supporting, embedding and supplementing protection system and construction method thereof - Google Patents

Abstract

The invention provides a rock slope dangerous rock supporting, embedding and supplementing protection system and a construction method thereof, wherein the rock slope dangerous rock supporting, embedding and supplementing protection system comprises dangerous rock, anchor rods, temporary steel cantilever frames, a construction platform, a disassembly-free shaping template, an arc-shaped precast slab and a slurry laying strip stone; the temporary steel cantilever frame comprises an arc-shaped supporting plate, inclined rods, cross rods and a falling stone protection net, wherein the falling stone protection net comprises protection rods and a steel wire net, and the protection rods on two sides are connected with a ground anchor through anchor cables; the construction platform is erected through a transverse horizontal rod, a longitudinal horizontal rod and a vertical rod, and one side of the vertical rod is reinforced through a side diagonal brace; the invention can improve the integrity of the dangerous rock mass of the rock slope, reduce the collapse risk of the dangerous rock mass, reduce the construction difficulty of the dangerous rock mass protection of the rock slope and ensure the safety of constructors.

Description

Rock slope dangerous rock supporting, embedding and supplementing protection system and construction method thereof

Technical Field

The invention relates to the field of rock slope protection engineering, in particular to a rock slope dangerous rock supporting and embedding protection system and a construction method thereof.

Background

Under the action of heavy rain and the like, scarps or steep slopes of soft rocks at the lower part of the upper hard rock are easy to erode, and a series of concave rock cavities are formed. The dangerous rock at the upper part of the concave rock cavity is continuously developed along with the continuous development of cracks and the continuous weathering erosion effect of the weak base, and is converted into collapse damage. The dangerous rock is wholly unstable under the condition of storm and earthquake, and the local dangerous rock monomer is unstable, so that the safety of buildings, roads, tourists and the like below the dangerous rock is influenced, and support, embedding and repair protection construction is required to be carried out on the dangerous rock monomer.

For the protection and treatment of large-area dangerous rock bodies, measures such as dangerous rock body cutting, slope cleaning, concave rock cavity embedding and passive protection net and the like are generally adopted. The construction method has the advantages that the engineering quantity is large, the labor cost is high, and in the concave rock cavity embedding construction process, the local dangerous rock monomers are unstable, so that certain potential safety hazards are easily caused for constructors.

Disclosure of Invention

The invention aims to provide a rock slope dangerous rock supporting and embedding protection system with high site construction efficiency, good protection effect and low safety risk and a construction method thereof.

In order to solve the technical problems, the invention provides a rock slope dangerous rock supporting and embedding protection system, which comprises a dangerous rock, an anchor rod, a temporary steel cantilever frame, a construction platform, a disassembly-free shaping template, an arc precast slab and a grout stone; the temporary steel cantilever frame comprises an arc-shaped supporting plate, inclined rods, cross rods and a falling stone protection net, wherein the falling stone protection net comprises protection rods and a steel wire net, and the protection rods on two sides are connected with a ground anchor through anchor cables; the construction platform is erected through a transverse horizontal rod, a longitudinal horizontal rod and a vertical rod, and one side of the vertical rod is reinforced through a side diagonal brace;

The end part of the cross rod is provided with a clamping groove corresponding to the clamping block, so that the clamping block is buckled in the clamping groove when the arc-shaped support plate is connected with the cross rod; and a plurality of anchoring grooves are formed in the cross rod at intervals, and each anchoring groove comprises at least two through grooves which are symmetrically arranged, so that the open cable joint can penetrate through the through grooves to be connected with the cross rod.

Further, the inner side surface of the arc-shaped supporting plate is provided with a plurality of propping grooves at intervals from the position close to the cross rod to the position far away from the cross rod, and the end parts of the inclined rods are inserted into the propping grooves.

Further, the spread groove has been seted up to the one end of arc backup pad, and the interval is provided with a plurality of clamping bars in the spread groove, and when falling stone protection network and arc backup pad linked to each other, the mesh department of falling stone protection network bottom was hung and is located on a plurality of clamping bars.

Further, the lower end face of the clamping groove is arranged in an inclined structure.

Further, the top of the construction platform is provided with a guardrail, an adjustable base and a sleeve are fixed on the cast-in-place concrete bottom plate, and the upright rod is inserted into the sleeve to be fixed.

Further, the upper surface of the arc-shaped supporting plate is propped against the upside of the concave rock cavity at the lower end of the dangerous rock body, meanwhile, one end of the cross rod is propped against the downside of the concave rock cavity, the other end of the cross rod is connected with one end, close to the concave rock cavity, of the arc-shaped supporting plate, one end of the inclined rod is connected with one end of the cross rod through a hinge shaft, and the other end of the inclined rod is propped against the arc-shaped supporting plate.

Further, the lower part of the temporary steel cantilever frame is fixed through a steel plate connecting piece and an anchor nail, and the upper part of the temporary steel cantilever frame is connected with an anchor rod of the cantilever frame through an opening cable joint.

Further, the dangerous rock body on the upper portion of the concave rock cavity is connected through the anchor rod in a pulling mode, the inside of the concave rock cavity is supported through a slurry stone strip, the anchor rod is arranged on the periphery of the concave rock cavity, and a backing plate and a nut drawknot arc-shaped precast plate are arranged at the end portion of the anchor rod.

Furthermore, the periphery of the concave rock cavity is connected with the disassembly-free shaping template through the anchor rod in a pulling way, and the inside of the concave rock cavity is directly filled with the expansion concrete through the grouting holes.

The invention also discloses a construction method of the rock slope dangerous rock supporting and embedding protection system, which is used for obtaining the rock slope dangerous rock supporting and embedding protection system through construction and comprises the following steps:

step one, casting a concrete bottom plate in situ: the slope bottom cast-in-place concrete is used as a bottom plate of the construction platform;

step two, building a construction platform: erecting a construction platform on the cast-in-place concrete bottom plate;

Thirdly, anchor bolts and cantilever frame anchor rods are constructed: anchor nails and cantilever frame anchor rods are constructed on the cavity wall of the concave rock cavity and used for fixing the temporary steel cantilever frame;

Step four, erecting a temporary steel cantilever frame: setting up a diagonal rod, a cross rod and an arc-shaped supporting plate of the temporary steel cantilever frame, wherein the diagonal rod is connected with the bottom of the cross rod through a hinge shaft, a falling stone protection net is arranged at the top of the temporary steel cantilever frame along a slope surface, and two sides of the falling stone protection net are connected with ground anchors for fixation;

Fifthly, anchor rod construction: anchor rods are arranged on the upper dangerous rock body of the concave rock cavity in a drilling mode, and the upper dangerous rock body is reinforced through the anchor rods;

Step six, stone masonry is carried out by grouting strips: the slurry masonry strip stones are built by a slurry paving method, the stones are laid in layers and horizontally, the middle of the upper and lower staggered joints is filled with cores, and the cavities between the slurry masonry strip stones and the concave rock cavities are filled with C-shaped expansion concrete;

step seven, installing an arc prefabricated plate: the arc-shaped precast slab is pulled and connected outside the concave rock cavity, and the gap is filled with expansion mortar;

step eight, pouring expanded concrete: and (3) embedding and filling the concave rock cavity which is not required to be filled with the grout strip stone, and directly filling the expansion concrete into the concave rock cavity.

The invention has the beneficial effects that:

(1) According to the invention, temporary steel cantilever supports are adopted for supporting during construction of the dangerous rock, so that the difficulty of protective construction of the dangerous rock is reduced, and the construction efficiency is improved.

(2) The dangerous rock body at the upper part of the concave rock cavity is connected by the anchor rod in a pulling way, and the interior of the concave rock cavity is supported by the serous masonry strip or filled with the expansion concrete, so that the filling and sealing effects on the concave rock cavity can be achieved, and the integrity of the dangerous rock body is further improved.

(3) The concave rock cavity is supported by the slurry laying strip stones, and the gap of the arc precast slab is filled with the expansion mortar through the anchor rod tie, so that the integrity and stability of the dangerous rock mass are improved.

Drawings

FIG. 1 is a schematic diagram of the rock slope dangerous rock mass supporting and embedding protection of the invention;

FIG. 2 is a schematic representation of the cavity expansion concrete filling of the present invention;

FIG. 3 is a schematic view of a masonry support according to the present invention;

FIG. 4 is a schematic view of the section steel cantilever support of the present invention;

FIG. 5 is a schematic view of the protection net of the section steel cantilever frame of the invention;

FIG. 6 is a schematic illustration of a construction flow of the present invention;

FIG. 7 is a schematic view of a support structure of the medium-sized steel cantilever of the present invention;

FIG. 8 is an axial view of a supporting structure of the section steel cantilever in the invention;

Fig. 9 is a side view of the middle-sized steel cantilever support structure of the present invention.

In the figure: 1-dangerous rock mass, 2-anchor rod, 3-rock slope, 4-concave rock cavity, 5-cantilever anchor rod, 6-temporary steel cantilever, 7-open cable joint, 8-steel plate connecting piece, 9-anchor, 10-backing plate, 11-nut, 12-sleeve, 13-cat ladder, 14-adjustable base, 15-cast-in-place concrete bottom plate, 16-diagonal brace, 17-horizontal rod, 18-longitudinal horizontal rod, 19-upright rod, 20-construction platform, 21-guardrail, 22-expanded concrete, 23-disassembly-free shaping template, 24-arc precast slab, 25-expanded mortar, 26-grout stone, 27-arc supporting plate, 28-diagonal rod, 29-cross rod, 30-falling stone protecting net, 31-protecting rod, 32-steel wire net, 33-anchor cable, 34-ground anchor, 35-grouting hole, 36-hinge shaft, 37-clamping block, 38-clamping groove, 39-through groove, 40-supporting groove, 41-connecting groove and 42-clamping rod.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.

It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.

1-9, The invention provides a rock slope dangerous rock supporting and embedding protection system, which comprises a dangerous rock 1, an anchor rod 2, a temporary steel cantilever frame 6, a construction platform 20, a disassembly-free shaping template 23, an arc-shaped precast slab 24 and a grout stone 26; the temporary steel cantilever 6 comprises an arc-shaped supporting plate 27, inclined rods 28, cross rods 29 and a falling stone protective net 30, wherein the falling stone protective net 30 comprises protective rods 31 and steel wire nets 32, and the protective rods 31 on two sides are connected with a ground anchor 34 through anchor cables 33. The size of the grout stone 26 is 25 multiplied by 90cm or the temporary section steel cantilever frame 6 is manufactured according to practical conditions, and the temporary section steel cantilever frame is manufactured by Q235 section steel.

The upper surface of the arc-shaped supporting plate 27 abuts against the upper side of the concave rock cavity 4 at the lower end of the dangerous rock body 1, so that the arc-shaped supporting plate 27 plays a supporting role on the concave rock cavity 4, meanwhile, one end of the cross rod 29 abuts against the lower side of the concave rock cavity 4, the other end of the cross rod 29 is connected with one end of the arc-shaped supporting plate 27, which is close to the concave rock cavity 4, of the arc-shaped supporting plate 27, one end of the inclined rod 28 is connected with one end of the cross rod 29 through a hinge shaft 36, the other end of the inclined rod 28 abuts against the arc-shaped supporting plate 27, so that the arc-shaped supporting plate 27, the cross rod 29 and the inclined rod 28 form a triangular supporting structure through the hinge shaft 36, the arc-shaped supporting plate 27, the cross rod 29 and the inclined rod 28 can adaptively adjust for different concave rock cavities 4, the supporting effect is improved, and in addition, stones falling on the dangerous rock body 1 can be blocked by the falling stone protecting net 30 and temporarily collected in the gap between the falling stone protecting net 30 and the lower end of the dangerous rock body 1, so that the dangerous rock falling workers are prevented from being influenced.

In particular, the guard bars 31 are longitudinally arranged, the guard bars 31 are distributed at intervals along the horizontal direction, the steel wire nets 32 are transversely arranged on the guard bars 31, the steel wire nets 32 are supported and protected through the guard bars 31, so that falling rocks can be blocked by the steel wire nets 32, anchor cables 33 are connected to the tops of the two guard bars 31 on two sides, one ends of the anchor cables 33, far away from the guard bars 31, are connected to the ground through ground anchors 34, and the stability of the guard bars 31 is improved.

Preferably, one end of the arc-shaped supporting plate 27, which is close to the cross rod 29, is provided with a clamping block 37, and the end part of the cross rod 29 is provided with a clamping groove 38 corresponding to the clamping block 37, so that when the arc-shaped supporting plate 27 is connected with the cross rod 29, the clamping block 37 is buckled in the clamping groove 38; and the cross bar 29 is provided with a plurality of anchoring grooves at intervals, and the anchoring grooves comprise at least two symmetrically arranged through grooves 39, so that the split cable joint 7 can pass through the positions of the through grooves 39 to be connected with the cross bar 29.

Specifically, when arc backup pad and horizontal pole are connected, carry out joint cooperation through joint piece and draw-in groove for arc backup pad and horizontal pole are direct to have certain stability, and because the joint mode of joint piece and draw-in groove is comparatively simple and convenient, consequently can improve the efficiency of construction in actual construction.

Simultaneously, after horizontal pole and arc backup pad are connected stably, through beating the stock and establish to in the soil body to peg graft the tip of opening cable joint in leading to the groove, then the tip of opening cable joint is fixed through connecting piece such as bolt again, in order to guarantee the stability between opening cable joint and the horizontal pole, and because offered a plurality of anchor grooves on the horizontal pole, consequently in the concave rock chamber of different forms, the anchor groove of optional different positions is in order to guarantee stability.

It should be noted that the split cable is generally in a Y-shaped structure, so one end of the split cable has two ends, and during connection, the two ends of the split cable can be respectively inserted into two through grooves in the same anchoring groove to ensure the connection stability of the split cable, and after the split cable passes through the through grooves, the bolt is connected to the end of the split cable to prevent the split cable from being separated from the through grooves by itself.

Preferably, the inner side surface of the arc-shaped supporting plate 27 is provided with a plurality of supporting grooves 40 at intervals from a position close to the cross bar 29 to a position far away from the cross bar 29, and the end parts of the inclined bars 28 are inserted into the supporting grooves 40.

Specifically, peg graft to the bracing groove through the diagonal bar for diagonal bar, horizontal pole, arc backup pad form triangle-shaped bearing structure, improve stability, simultaneously because a plurality of bracing grooves are interval distribution by the position department that is close to the horizontal pole to keeping away from the horizontal pole, consequently the angle between diagonal bar and the horizontal pole is adjusted to the bracing groove of different positions in the grafting of accessible diagonal bar tip, and then adjusts the angle, the position of propping up of arc backup pad to concave rock chamber.

Preferably, a connecting groove 41 is formed at one end of the arc-shaped supporting plate 27, a plurality of clamping rods 42 are arranged in the connecting groove 41 at intervals, and when the falling stone protection net 30 is connected with the arc-shaped supporting plate 27, the mesh holes at the bottom of the falling stone protection net 30 are hung on the plurality of clamping rods 42.

Specifically, because the bottom of falling stone protection network needs to be connected with the arc backup pad, and in case more falling stones drop to the falling stone protection network in, the bottom of this falling stone protection network must bear great pressure, in order to avoid falling stone protection network bottom fracture, therefore hang the mesh position of falling stone protection network bottom through establishing to the kelly for falling stone protection network bottom stability improves.

Preferably, the lower end surface of the clamping groove 38 is arranged in an inclined structure.

Specifically, when the arc-shaped supporting plate receives downward pressure and leads to the downward inclination of the outer end of the arc-shaped supporting plate, the clamping block can incline synchronously, and at the moment, the clamping block can be contacted with the inclined position of the lower end face of the clamping groove, so that the clamping block is limited by the inclined position, and the clamping block is prevented from being separated from the clamping groove, so that the arc-shaped supporting plate and the cross rod are connected stably enough.

Fig. 1 is a schematic view of the support and reinforcement protection of a rock slope dangerous rock mass, a construction platform 20 is erected through a transverse horizontal rod 17, a longitudinal horizontal rod 18 and a vertical rod 19, one side of the vertical rod 19 is reinforced through a side inclined support 16, and a guardrail 21 is arranged at the top of the construction platform 20. An adjustable base 14 and a sleeve 12 are fixed on the cast-in-place concrete bottom plate 15, and a vertical rod 19 is inserted into the sleeve 12 for fixation, so that the height can be finely adjusted.

Wherein, horizontal pole 17, vertical horizontal pole 18 and pole setting 19 are X, Y, Z triaxial respectively and are fixed, guarantee that the three-dimensional structure of construction platform 20 is stable, but adjustable base 14 itself has the telescopic link simultaneously, and the total length of adjustable base 14 is adjusted through the screw thread with the interior pole to the outer pole of telescopic link, and then the height of adjustable base 14.

Fig. 2 to 3 are schematic diagrams of filling the concave rock cavity, wherein the dangerous rock body 1 at the upper part of the concave rock cavity 4 is connected with the rock slope 3 through the anchor rod 2 in a pulling way, the inside of the concave rock cavity 4 is supported by the grout stone 26, the grout stone 26 adopts the rock which is not easy to be weathered, the strength is not less than 30Mpa, the stone size is 25 multiplied by 90cm or the stone is manufactured according to the actual conditions, and the mortar joint thickness of the stone masonry is not more than 20mm. The anchor rods 2 are arranged on the outer periphery of the concave rock cavity 4, and the end parts of the anchor rods 2 positioned on the outer periphery of the concave rock cavity 4 are provided with the base plates 10 and the nuts 11 to be connected with the arc-shaped precast slabs 24 in a pulling mode, so that the arc-shaped precast slabs 24 limit the grout stone bars 26 in the concave rock cavity 4.

The gap between the arc-shaped precast slab 24 and the masonry 26 is filled with C25 expansion mortar 25.

The concave rock cavity 4 which is not suitable for grouting the strip stone 26 to fill is embedded and filled, the disassembly-free shaping template 23 is connected to the periphery of the concave rock cavity 4 in a pulling mode through the anchor rod 2, a plurality of grouting holes 35 are formed in the disassembly-free shaping template 23, and the expansion concrete 22 is directly filled into the concave rock cavity 4 through the grouting holes 35.

Fig. 4 to 5 are schematic views of the supporting and protecting of the section steel cantilever frame of the invention, and the temporary section steel cantilever frame 6 is arranged in the cavity cleaning cavity of the concave rock cavity 4, so that the supporting and protecting can be carried out when the upper dangerous rock body 1 is constructed.

The lower part of the temporary steel cantilever frame 6 is fixed through a steel plate connecting piece 8 and an anchor 9, the upper part of the temporary steel cantilever frame is connected with a cantilever frame anchor rod 5 through an opening cable joint 7, and the upper dangerous rock body 12 is supported and protected through an arc-shaped supporting plate 27.

The hinge shaft 36 is fixedly connected to the steel plate connecting piece 8, so that the cross rod 29 and the diagonal rod 28 can be fixed on the steel plate connecting piece 8 while rotating relatively, and then the steel plate connecting piece 8 is fixed through the anchor 9, so that the overall stability of the temporary steel cantilever frame 6 is improved.

In addition, the opening cable joint 7 and the cantilever frame anchor rod 5 are used for fixedly supporting the cross rod 29, so that the stabilizing effect of the temporary steel cantilever frame 6 is further improved.

The invention also discloses a construction method of the rock slope dangerous rock supporting and embedding protection system, which comprises the following steps:

Step one, cast-in-place concrete bottom plate 15: the slope bottom cast-in-place concrete is used as a bottom plate of the construction platform 20;

step two, building a construction platform 20: erecting a construction platform 20 on the cast-in-place concrete bottom plate 15;

Thirdly, constructing an anchor 9 and an overhanging frame anchor rod 5: the construction of an anchor 9 and an overhanging frame anchor rod 5 is carried out on the cavity wall of the concave rock cavity 4, and the anchor 9 and the overhanging frame anchor rod are used for fixing a temporary steel overhanging frame 6;

Step four, erecting a temporary steel cantilever frame 6: the inclined rod 28, the cross rod 29 and the arc-shaped supporting plate 27 of the temporary steel cantilever frame 6 are erected, the inclined rod 28 is connected with the bottom of the cross rod 29 through a hinge shaft 36, the falling stone protection net 30 is arranged on the top of the temporary steel cantilever frame 6 along the slope, and two sides of the falling stone protection net 30 are connected with the ground anchors 34 for fixation;

Fifthly, constructing an anchor rod 2: drilling holes on the upper dangerous rock body 1 of the concave rock cavity 4, arranging anchor rods 2, and reinforcing the upper dangerous rock body 1 through the anchor rods 2;

Step six, masonry of the slurry masonry strip stone 26: the slurry masonry strip stones 26 are built by a slurry paving method, stone blocks are laid in layers and horizontally, the middle of the upper and lower staggered joints is filled with cores, and the cavities between the slurry masonry strip stones 26 and the concave rock cavities 4 are filled with C25 expanded concrete;

step seven, installing an arc prefabricated plate 24: the arc-shaped precast slab 24 is pulled and connected outside the concave rock cavity 4, and the gap is filled with expansion mortar 25;

Step eight, pouring expanded concrete 22: the concave rock cavity 4 which is not required to be grouted with the strip stone 26 is embedded and filled with the expansion concrete 22 directly inside the concave rock cavity 4.

The present application is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present application can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present application fall within the scope of the present application.

Claims (10)

1. The utility model provides a rock slope dangerous rock mass body supports and inlays protective system which characterized in that: the construction method comprises a dangerous rock body (1), an anchor rod (2), a temporary section steel cantilever frame (6), a construction platform (20), a disassembly-free shaping template (23), an arc-shaped precast slab (24) and a slurry laying strip stone (26); the temporary profile steel cantilever frame (6) comprises an arc-shaped supporting plate (27), inclined rods (28), cross rods (29) and a falling stone protective net (30), the falling stone protective net (30) comprises protective rods (31) and steel wire nets (32), and the protective rods (31) on two sides are connected with a ground anchor (34) through anchor cables (33); the construction platform (20) is erected through a transverse horizontal rod (17), a longitudinal horizontal rod (18) and a vertical rod (19), and one side of the vertical rod (19) is reinforced through a side inclined strut (16);

one end of the arc-shaped supporting plate (27) close to the cross rod (29) is provided with a clamping block (37), and the end part of the cross rod (29) is provided with a clamping groove (38) corresponding to the clamping block (37), so that the clamping block (37) is buckled in the clamping groove (38) when the arc-shaped supporting plate (27) is connected with the cross rod (29); and a plurality of anchoring grooves are arranged on the cross rod (29) at intervals, and each anchoring groove comprises at least two through grooves (39) which are symmetrically arranged, so that the split cable joint (7) can pass through the positions of the through grooves (39) to be connected with the cross rod (29).

2. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

The inner side surface of the arc-shaped supporting plate (27) is provided with a plurality of propping grooves (40) at intervals from the position close to the cross rod (29) to the position far away from the cross rod (29), and the end parts of the inclined rods (28) are inserted into the propping grooves (40).

3. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

One end of the arc-shaped supporting plate (27) is provided with a connecting groove (41), a plurality of clamping rods (42) are arranged in the connecting groove (41) at intervals, and when the falling stone protection net (30) is connected with the arc-shaped supporting plate (27), the mesh holes at the bottom of the falling stone protection net (30) are hung on the plurality of clamping rods (42).

4. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

the lower end surface of the clamping groove (38) is arranged in an inclined structure.

5. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

the top of the construction platform (20) is provided with a guardrail (21), and an adjustable base is fixed on the cast-in-place concrete bottom plate (15)

(14) And a sleeve (12), wherein the vertical rod (19) is inserted into the sleeve (12) for fixation.

6. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

The upper surface of the arc-shaped supporting plate (27) is propped against the upper side of the concave rock cavity (4) at the lower end of the dangerous rock body (1), and meanwhile, the cross rod (29) is arranged at the same time

One end of the inclined rod (28) is connected with one end of the cross rod (29) through a hinge shaft (36), and the other end of the inclined rod (28) is propped against the arc-shaped supporting plate (27).

7. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

the lower part of the temporary steel cantilever frame (6) is fixed with an anchor bolt (9) through a steel plate connecting piece (8), and the upper part is connected with a cantilever frame anchor rod (5) through an opening cable joint (7).

8. The rock slope dangerous rock support and supplement protection system according to claim 1, wherein:

The dangerous rock body (1) at the upper part of the concave rock cavity (4) is connected with the anchor rod (2) in a pulling way, and the interior of the concave rock cavity (4) is filled with a stone by grouting

(26) And an anchor rod (2) is arranged on the periphery of the concave rock cavity (4), and a backing plate (10) and a nut (11) are arranged at the end part of the anchor rod (2) to tie the arc-shaped precast slab (24).

9. The rock slope dangerous rock support and supplement protection system of claim 6, wherein:

The periphery of the concave rock cavity (4) is connected with a disassembly-free shaping template (23) in a pulling way through an anchor rod (2), and the inside of the concave rock cavity (4) is directly filled with expansion concrete (22) through a grouting hole (35).

10. A construction method of a rock slope dangerous rock mass supporting and embedding protection system, which is used for constructing and obtaining the rock slope dangerous rock mass supporting and embedding protection system as set forth in any one of claims 1-9, and is characterized by comprising the following steps:

step one, a cast-in-place concrete bottom plate (15): the slope bottom cast-in-place concrete is used as a bottom plate of a construction platform (20);

step two, building a construction platform (20): erecting a construction platform (20) on the cast-in-place concrete bottom plate (15);

Thirdly, constructing an anchor bolt (9) and an overhanging frame anchor rod (5): the construction of an anchor bolt (9) and an overhanging frame anchor rod (5) is carried out on the cavity wall of the concave rock cavity (4) and is used for fixing the temporary steel overhanging frame (6);

step four, erecting a temporary steel cantilever frame (6): the method comprises the steps of erecting a diagonal rod (28), a cross rod (29) and an arc-shaped supporting plate (27) of a temporary steel cantilever frame (6), connecting the diagonal rod (28) with the bottom of the cross rod (29) through a hinge shaft (36), arranging a falling stone protection net (30) along the slope surface at the top of the temporary steel cantilever frame (6), and connecting and fixing ground anchors (34) on two sides of the falling stone protection net (30);

Fifthly, constructing an anchor rod (2): drilling holes on the dangerous rock body (1) at the upper part of the concave rock cavity (4), arranging anchor rods (2), and reinforcing the dangerous rock body (1) at the upper part through the anchor rods (2);

Step six, masonry of the slurry stone (26): the slurry masonry strip stones (26) are built by a slurry paving method, stone blocks are laid in layers and horizontally, the middle of the upper and lower staggered joints is filled with cores, and a cavity between the slurry masonry strip stones (26) and the concave rock cavities (4) is filled with C25 expanded concrete;

Seventh, installing an arc prefabricated plate (24): the concave rock cavity (4) is externally connected with an arc-shaped precast slab (24), and the gap is filled with expansion mortar (25);

pouring expanded concrete (22): the concave rock cavity (4) which is not required to be grouted with the strip stone (26) is embedded and filled, and the expansion concrete (22) is directly filled in the concave rock cavity (4).