CN113174977A

CN113174977A - Slope support construction process

Info

Publication number: CN113174977A
Application number: CN202110546931.1A
Authority: CN
Inventors: 吴毅勇; 周攀峰; 陈强
Original assignee: Nuclear Industry South China Huadu Construction Engineering Co ltd
Current assignee: Guangdong Nuclear Industry Construction Engineering Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-07-27
Anticipated expiration: 2041-05-19
Also published as: CN113174977B

Abstract

The utility model relates to a slope support construction technology, it includes and is squeezing into the rock-soil layer in the stock hole with the stock body, and put into the stock hole through elevating gear with prefabricated separating baffle, thereby fall into the cavity that a plurality of waited to pour with the stock hole, then insert the stock hole with the slip casting section of thick bamboo that has the through-hole, the through-hole and each layer cavity of a slip casting section of thick bamboo communicate respectively, through lasting the slip casting, can fill up each layer cavity one by one with top-down, reduce the condition that the side cavity is difficult to fill up on the stock hole, be favorable to improving the anchor effect of stock body. This application can improve the anchor effect to the side slope.

Description

Slope support construction process

Technical Field

The application relates to the technical field of slope support, in particular to a slope support construction process.

Background

When the side slope meets rainfall and strong vibration, the side slope is often unstable, and the anchor rod is a relatively universal means for supporting the side slope.

In the related technology, when a side slope is supported, firstly, drilling and positioning are carried out, then, an anchor rod is driven into a hole, then, concrete is poured into the hole, and after cement grout is solidified, the physical and mechanical property indexes of a side slope rock-soil body can be effectively improved, the strength of the rock-soil body is improved, and the landslide phenomenon is reduced.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when supporting the great slope of slope, because anchor eye and domatic perpendicular for certain contained angle setting is personally submitted with the level in the anchor eye, when toward anchor eye in disposable slip casting, the liquid level and the horizontal plane of thick liquid are parallel, thereby lead to the upside of anchor eye to appear the cavity, make the promotion effect to ground body intensity descend, thereby influence the anchor effect to the side slope, consequently still have the space of improving.

Disclosure of Invention

In order to improve the anchoring effect on the side slope, the application provides a side slope support construction process.

The application provides a slope support construction process adopts the following technical scheme:

a slope support construction process comprises the following steps:

s1: construction preparation: a positioning frame, a grouting cylinder, a plurality of partition baffles and a lifting device are manufactured in advance, a plurality of through holes penetrate through the side wall of the grouting cylinder, and the through holes are distributed along the length direction of the grouting cylinder;

s2: cleaning a side slope;

s3: pore-forming: measuring and lofting on the trimmed slope surface, determining the position of an anchor rod hole, drilling the anchor rod hole by using a rotary drilling rig, and cleaning impurities in the hole by using a high-pressure fan;

s4: and (3) anchor rod installation: hammering the anchor rod body to be installed into the rock-soil layer at the bottom of the corresponding anchor hole;

s5: installing a baffle plate: installing a positioning frame and a lifting assembly above an anchor hole position, lowering a plurality of baffle plates into the anchor hole through the lifting assembly, dividing the anchor hole into a plurality of cavities through the baffle plates, and sequentially penetrating a grouting barrel through the baffle plates to the bottom of the anchor hole;

s5: grouting in the hole: the grouting pipe extends into the grouting cylinder, concrete is poured into the grouting cylinder, and the concrete fills the cavities of all layers from top to bottom;

s6: and (5) dismantling the positioning frame.

Through adopting above-mentioned technical scheme, on the ground layer in squeezing into the anchor hole with the stock body, and put into the anchor hole through elevating gear with prefabricated baffle that separates, thereby fall into the cavity that a plurality of waited to pour with the anchor hole, then insert the anchor hole with the slip casting section of thick bamboo that has the through-hole, the through-hole and each layer cavity of a slip casting section of thick bamboo communicate respectively, through lasting the slip casting, can fill up each layer cavity one by top-down, reduce the condition that the side cavity is difficult to fill up on the anchor hole, be favorable to improving the anchor effect of stock body.

Preferably, the lifting device comprises a motor, a driving roller coaxially and fixedly connected with the output shaft of the motor, a driven roller rotatably connected with the outer peripheral surface of the lower end of the anchor rod body, and a synchronous belt sleeved between the driving roller and the driven roller; separate the baffle including the first semicircle board and the second semicircle board of mutual concatenation, one side joint of hold-in range in the concatenation department of first semicircle board and second semicircle board.

Through adopting above-mentioned technical scheme for under the drive of motor and under the transmission of hold-in range and driven voller, drive roll, it can follow the hold-in range and move to in the anchor hole to separate the baffle, be convenient for realize dividing into the purpose of a plurality of cavitys with the anchor hole, will separate baffle installation and anchor rod body installation and fall into two steps and go on, when avoiding the anchor rod body and separating the baffle and squeeze into the anchor hole together, separate the baffle and lead to separating the cracked condition of baffle and take place because of the small skew of anchor rod body.

Preferably, the splicing surface of the first semicircular plate is fixed with two positioning blocks, the splicing surface of the second semicircular plate is provided with two positioning grooves for horizontally inserting the positioning blocks, and when the two positioning blocks are respectively inserted into the two positioning grooves, the positions of the two positioning grooves are reserved with channels for the synchronous belt to pass through.

Through adopting above-mentioned technical scheme, under the grafting cooperation of constant head tank and locating piece, be convenient for piece together first semicircle board and second semicircle board into the circular slab to the adaptation anchor eye, all block the hold-in range both sides to between first semicircle board and the second semicircle board simultaneously, only need will separate baffle and hold-in range one side and be connected the lift that can realize separating the baffle, be convenient for improve the installation effectiveness who separates baffle and elevating gear.

Preferably, the hold-in range inboard is fixed with a plurality of archs, and is a plurality of protruding equidistant distribution along hold-in range length direction, the spout that supplies protruding slip joint is seted up to the constant head tank inside wall, and spout length direction is unanimous with constant head tank length direction, and the one end opening setting that the constant head tank diapire was kept away from to the spout.

Through adopting above-mentioned technical scheme, when the hold-in range slided into the spout, the locating piece of hold-in range one side slided into the spout of second semicircle board in the lump to realized the hold-in range and separated the purpose that keeps off the joint, when assembling and separating the baffle, also realized elevating gear and separated being connected of baffle, be favorable to improving installation effectiveness between them, and then improved the efficiency of construction that the side slope was strutted.

Preferably, the peripheral surface of the driving roller is provided with an annular groove for accommodating the protrusion.

Through adopting above-mentioned technical scheme, when protruding removal to drive roll department, the ring channel can hold in the ring channel to reduce protruding normal rotation to the hold-in range, the arch still has limiting displacement simultaneously, and at the transmission in-process, the arch can be proofreaded the hold-in range, is favorable to improving the hold-in range and squints gradually and breaks away from the problem of drive roll at the transmission process.

Preferably, the first semi-circular plate is provided with a limiting hole for the grouting cylinder to pass through along the thickness direction of the first semi-circular plate, and after all the groups of partition baffles are assembled, the axes of the limiting holes are overlapped.

Through adopting above-mentioned technical scheme, spacing hole plays the fixed action to a slip casting section of thick bamboo inserts the anchor eye along the length direction who is on a parallel with the stock body, does benefit to simultaneously and remains stable in the slip casting in-process.

Preferably, the locating rack comprises a top plate and two side plates which are vertically fixed on the lower end face of the locating rack, the two side plates are respectively arranged on two sides of the top plate, and the lower ends of the side plates are arranged in a sharp mode.

Through adopting above-mentioned technical scheme, the curb plate lower extreme is sharp-pointed to set up to in inserting the side slope, transfer for subsequent elevating gear and separate the baffle and provide the fulcrum.

Preferably, the motor is arranged on the upper end face of the top plate, and the top plate penetrates through two through grooves for the two sides of the synchronous belt to penetrate through along the thickness direction of the top plate.

Through adopting above-mentioned technical scheme, the roof provides the strong point for the motor, and the elevating gear of being convenient for steadily goes on.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through making the locating rack in advance, elevating gear and separate the baffle, and squeeze into the downthehole ground layer of anchor at the stock body after, with the help of elevating gear with prefabricated separate the baffle and put into in the anchor hole, thereby fall into the cavity that a plurality of was waited to pour with the anchor hole, and insert the anchor hole with the slip casting section of thick bamboo of through-hole in order to realize with the intercommunication purpose of cavity, through lasting the slip casting section of thick bamboo toward the slip casting, and top-down fills up each layer cavity one by one, reduce the condition that the side cavity of anchor hole upside is difficult to the full notes, be favorable to improving the anchor effect of stock body.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a positioning frame in the embodiment of the present application. .

Figure 3 is an exploded view of a bulkhead in an embodiment of the application.

Fig. 4 is an enlarged schematic view at a in fig. 1.

Description of reference numerals: 1. side slope; 2. a positioning frame; 21. a top plate; 211. a through groove; 22. a side plate; 3. an anchor body; 4. a grouting cylinder; 41. a through hole; 5. a grouting pipe; 61. a motor; 62. a drive roll; 621. an annular groove; 63. a synchronous belt; 631. a protrusion; 64. a driven roller; 7. a baffle plate; 71. a first semi-circular plate; 711. positioning blocks; 712. a limiting hole; 72. a second semicircular plate; 721. positioning a groove; 722. a chute; 723. a lead-out groove; 724. an accommodation hole; 73. a bolt; 74. a circular arc notch; 8. an anchor eye; 9. a cavity.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a side slope support construction process. Referring to fig. 1, a slope support construction process includes the following steps:

s1: construction preparation: the positioning frame 2, the grouting barrel 4, the plurality of partition plates 7 and the lifting device are manufactured in advance, a plurality of through holes 41 penetrate through the side wall of the grouting barrel 4, the through holes 41 are distributed along the length direction of the grouting barrel 4, and the manufactured positioning frame 2, the partition plates 7, the lifting device and the plurality of anchor rod bodies 3 to be installed are transported to a construction site by a transport vehicle;

s2: side slope cleaning: manually trimming the slope surface, removing surface soil and sundries of the slope surface, and removing pumice and loose rocks;

s3: pore-forming: measuring and lofting on the trimmed slope surface, determining the position of an anchor rod hole, drilling 8 anchor holes by using a rotary drilling rig, and cleaning impurities in the hole by using a high-pressure fan;

s4: and (3) anchor rod installation: hammering the anchor rod body 3 to be installed into a rock layer at the bottom of the corresponding anchor hole 8;

s5: installing a baffle 7: installing a positioning frame 2 and a lifting assembly above an anchor hole 8, lowering a plurality of baffle plates 7 into the anchor hole 8 through the lifting assembly, enabling the baffle plates 7 to be distributed at equal intervals along the depth of the anchor hole 8, dividing the anchor hole 8 into a plurality of cavities 9 by the baffle plates 7, and sequentially penetrating a grouting barrel 4 through the baffle plates 7 to the bottom of the anchor hole 8;

s5: grouting in the hole: the grouting pipe 5 extends into the grouting cylinder 4, concrete is poured into the grouting cylinder 4, the concrete fills the cavities 9 of all layers from top to bottom, and then the grouting pipe 5 is drawn out of the grouting cylinder 4 and waits for the concrete to be formed;

s6: dismantling the positioning frame 2: and (3) removing the positioning frame 2 and the lifting device, and cutting off the redundant part of the grouting cylinder 4 extending out of the anchor hole 8 after the concrete is formed.

Referring to fig. 1 and 2, the locating rack 2 includes a top plate 21 and two side plates 22 vertically fixed on the lower end face of the locating rack 2, the two side plates 22 are respectively disposed on two sides of the top plate 21, and the lower ends of the side plates 22 are arranged in a sharp manner so as to be inserted into the side slope 1 and provide fulcrums for the partition board 7 to be placed under the subsequent lifting device.

Referring to fig. 1 and 2, the lifting device includes a motor 61 for fixing the upper end surface of the top plate 21, a driving roller 62 coaxially and fixedly connected with an output shaft of the motor 61, a driven roller 64 rotatably connected with the outer peripheral surface of the lower end of the anchor rod body 3, and a synchronous belt 63 sleeved between the driving roller 62 and the driven roller 64, wherein the synchronous belt 63 is in friction transmission with the driven roller 64 and the driving roller 62. Two through grooves 211 for the two sides of the synchronous belt 63 to pass through penetrate through the top plate 21 along the thickness direction of the top plate. Driven roller 64 is steel material, buries in the concrete when later stage pours, improves the concrete strength.

Referring to fig. 1 and 2, before the lifting device is installed, the lower end of the anchor rod body 3 is driven into the bottom of the anchor hole 8 along the axis of the anchor hole 8, and at the moment, the axis of the driven roller 64 is parallel to the slope surface. Then the synchronous belt 63 is extended into the anchor hole 8, the synchronous belt 63 is sleeved on the driven roller 64, then the side plate 22 of the positioning frame 2 is inserted into the slope, so that the top plate 21 is positioned right above the anchor hole 8, and the axis of the driving roller 62 is parallel to the axis of the driven roller 64. Then, the synchronous belt 63 is fitted around the driving roller 62, thereby completing the installation of the positioning frame 2 and the lifting device. The hold-in range 63 can be the strip, can tailor to suitable length with hold-in range 63 according to 8 degree of depth in anchor eye, then welds the both ends of hold-in range 63 to guarantee that hold-in range 63 supports tightly with drive roll 62, driven voller 64, be convenient for realize three's transmission.

Referring to fig. 3 and 4, the baffle 7 comprises a first semicircular plate 71 and a second semicircular plate 72, the first semicircular plate 71 and the second semicircular plate 72 can be assembled into a circular plate, the diameter of the baffle 7 is equal to that of the anchor hole 8, and the baffle 7 is convenient for dividing the anchor hole 8 into a plurality of cavities 9. The splicing surface of the first semicircular plate 71 and the splicing surface of the second semicircular plate 72 are both provided with arc notches 74. By assembling the first semicircular plate 71 and the second semicircular plate 72 in a direction of approaching each other, the two circular arc notches 74 can be assembled into a circular hole through which the anchor rod body 3 passes. First semicircle board 71 is fixed through bolt 73 with the second arc board, and bolt 73 runs through second semicircle board 72 from the arc surface of second semicircle board 72 to be connected with the screw hole of first semicircle board 71 concatenation face, the accommodation hole 724 that holds bolt 73 nut has been seted up to the arc surface of second semicircle board 72, in order to avoid bolt 73 protrusion baffle 7 outer peripheral face.

Referring to fig. 3 and 4, two positioning blocks 711 are fixed on the splicing surface of the first semicircular plate 71, the two positioning blocks 711 are respectively disposed on two sides of the arc notch 74, two positioning grooves 721 for the positioning blocks 711 to be horizontally inserted are formed in the splicing surface of the second semicircular plate 72, and the positioning grooves 721 are communicated with two end surfaces of the second semicircular plate 72. The positioning slot 721 is matched with the positioning block 711 in an inserting manner, so that the first semicircular plate 71 and the second semicircular plate 72 can be conveniently spliced into a circular plate. The length of the positioning slot 721 is greater than that of the positioning block 711, so that when the two positioning blocks 711 are inserted into the two positioning slots 721, two channels for the synchronous belt 63 to pass through are reserved at the bottom of the positioning slots 721.

Referring to fig. 3 and 4, a plurality of protrusions 631 are fixed to the inside of the timing belt 63, and the plurality of protrusions 631 are equally spaced apart along the length direction of the timing belt 63. Each set of baffles 7 corresponds to two projections 631. In the same second semicircular plate 72, the two positioning slots 721 are provided with sliding slots 722 at the sides close to each other for the protrusions 631 to slide and engage, the length direction of the sliding slots 722 is the same as the length direction of the positioning slots 721, and the opening is provided at the end of the sliding slots 722 far away from the bottom wall of the positioning slots 721, so that the protrusions 631 slide into the sliding slots 722. The second semicircular plate 72 is provided with a side groove 723 through the thickness direction thereof, the side groove 723 is communicated with one positioning groove 721 and one sliding groove 722, when two protrusions 631 located at the same height slide into the corresponding sliding grooves 722 at the same time, one protrusion 631 is clamped with the corresponding sliding groove 722, so that the baffle 7 is connected with the synchronous belt 63, the other protrusion 631 moves into the side groove 723, and the lifting of the baffle 7 is realized under the driving of the motor 61 and the transmission of the synchronous belt 63, the driven roller 64 and the driving roller 62. The side groove 723 is formed, so that the protrusions 631 can slide in and out of the side groove 723, normal movement of the baffle plate 7 is prevented from being interfered by the protrusions 631, meanwhile, when two protrusions 631 corresponding to the baffle plate 7 are located at the same height, one of the protrusions 631 is located in the side groove 723, and a path of concrete in the lower-layer cavity 9 flowing into the upper-layer cavity 9 is blocked, so that after the lower-layer cavity 9 is filled, grouting operation of the upper-layer cavity 9 is performed, and the occurrence of a cavity phenomenon is reduced. When the separation baffles 7 are placed one by one, the first group of separation baffles 7 are assembled and fixed outside the anchor holes 8, the separation baffles 7 are placed below the starting motor 61, after the separation baffles 7 are placed for a set distance, the motor 61 stops working, then the second group of separation baffles 7 are installed outside the anchor holes 8, then the motor 61 is started, the distance is set below the second group of separation baffles 7, all the placing steps of the separation baffles 7 are completed through the same operation, the anchor rod body 3 and the separation baffles 7 are installed into the anchor holes 8 in two steps, and when the anchor rod body 3 and the separation baffles 7 are prevented from being placed into the anchor holes 8 together, the separation baffles 7 are broken due to the small deviation of the anchor rod body 3.

Referring to fig. 3 and 4, the annular groove 621 is provided on the outer circumferential surface of the drive roller 62, when the protrusion 631 moves to the drive roller 62, the annular groove 621 can be accommodated in the annular groove 621 to reduce the normal rotation of the protrusion 631 to the synchronous belt 63, and the protrusion 631 further has a limiting effect, so that in the transmission process, the protrusion 631 can correct the synchronous belt 63, and the problem that the synchronous belt 63 gradually deviates in the transmission process and breaks away from the drive roller 62 is favorably solved.

Referring to fig. 1 and 3, a limiting hole 712 for the grouting cylinder 4 to pass through penetrates through the first semicircular plate 71 along the thickness direction of the first semicircular plate, and after the partition boards 7 are assembled, the axes of the limiting holes 712 are overlapped, so that the grouting cylinder 4 is inserted into the anchor hole 8 along the length direction parallel to the anchor rod body 3. When carrying out the slip casting to anchor eye 8, at first pass each spacing hole 712 with slip casting section of thick bamboo 4 in proper order, a plurality of through-holes 41 in the slip casting section of thick bamboo 4 communicate respectively in each layer cavity 9, then extend slip casting pipe 5 to the bottom of slip casting section of thick bamboo 4, the discharge gate of slip casting pipe 5 is in same height with separating baffle 7 this moment, at this moment, toward pouring into the concrete in the slip casting section of thick bamboo 4, the concrete passes through-hole 41 and gets into in the cavity 9, then take out one section slip casting pipe 5, the discharge gate that makes slip casting pipe 5 is located next group and separates baffle 7 department, be convenient for carry out the slip casting operation to next cavity 9, the segmentation slip casting, be favorable to reducing the inside empty condition that appears of concrete.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A side slope support construction process is characterized in that: the method comprises the following steps:

s1: construction preparation: the method comprises the following steps that a positioning frame (2), a grouting cylinder (4), a plurality of partition baffles (7) and a lifting device are manufactured in advance, a plurality of through holes (41) penetrate through the side wall of the grouting cylinder (4), and the through holes (41) are distributed along the length direction of the grouting cylinder (4);

s2: cleaning a side slope;

s3: pore-forming: measuring and lofting on the trimmed slope surface, determining the position of an anchor rod hole, drilling the anchor rod hole (8) by using a rotary drilling rig, and cleaning impurities in the hole by using a high-pressure fan;

s4: and (3) anchor rod installation: hammering the anchor rod body (3) to be installed into the rock-soil layer at the bottom of the corresponding anchor hole (8);

s5: installing a baffle plate: the positioning frame (2) and the lifting assembly are arranged above the anchor hole (8), the plurality of baffle plates (7) are lowered into the anchor hole (8) through the lifting assembly, the anchor hole (8) is divided into a plurality of cavities (9) through the plurality of baffle plates (7), and then the grouting barrel (4) sequentially penetrates through the plurality of baffle plates (7) to the bottom of the anchor hole (8);

s5: grouting in the hole: the grouting pipe (5) extends into the grouting cylinder (4), and concrete is poured into the grouting cylinder (4), and the concrete fills the cavities (9) of all layers from top to bottom;

s6: and (5) dismantling the positioning frame.

2. The side slope support construction process according to claim 1, characterized in that: the lifting device comprises a motor (61), a driving roller (62) coaxially and fixedly connected with an output shaft of the motor (61), a driven roller (64) rotatably connected with the outer peripheral surface of the lower end of the anchor rod body (3), and a synchronous belt (63) sleeved between the driving roller (62) and the driven roller (64); separate baffle (7) including first semicircle board (71) and second semicircle board (72) of mutual concatenation, one side joint of hold-in range (63) in the concatenation department of first semicircle board (71) and second semicircle board (72).

3. The slope support construction process according to claim 2, characterized in that: two positioning blocks (711) are fixed on the splicing surface of the first semicircular plate (71), two positioning grooves (721) for the positioning blocks (711) to be horizontally inserted are formed in the splicing surface of the second semicircular plate (72), and when the two positioning blocks (711) are respectively inserted into the two positioning grooves (721), channels for the synchronous belt (63) to pass through are reserved at the bottoms of the two positioning grooves (721).

4. The slope support construction process according to claim 3, characterized in that: hold-in range (63) inboard is fixed with a plurality of archs (631), and is a plurality of equal interval distribution of protruding (631) length direction is followed in protruding (631), spout (722) that supply protruding (631) slip joint are seted up to constant head tank (721) inside wall, spout (722) length direction is unanimous with constant head tank (721) length direction, and spout (722) keep away from the one end opening setting of constant head tank (721) diapire.

5. The slope support construction process according to claim 4, characterized in that: the peripheral surface of the driving roller (62) is provided with an annular groove (621) for accommodating the protrusion (631).

6. The slope support construction process according to claim 2, characterized in that: the first semi-circular plate (71) penetrates through a limiting hole (712) for the grouting barrel (4) to penetrate through along the thickness direction of the first semi-circular plate, and when all the groups of partition baffles (7) are assembled, the axes of the limiting holes (712) are overlapped.

7. The side slope support construction process according to claim 1, characterized in that: the positioning frame (2) comprises a top plate (21) and two side plates (22) which are vertically fixed on the lower end face of the positioning frame (2), the two side plates (22) are respectively arranged on two sides of the top plate (21), and the lower ends of the side plates (22) are arranged in a sharp mode.

8. The slope support construction process according to claim 7, characterized in that: the motor (61) is arranged on the upper end face of the top plate (21), and two through grooves (211) for the two sides of the synchronous belt (63) to penetrate through are formed in the thickness direction of the top plate (21).