CN110241830A - Backfilling device and backfilling method - Google Patents

Abstract

The invention relates to a backfilling device, comprising a stress transfer cone fixedly connected to the cone of a breaker in an excavator, a stress plate fixedly connected to the bottom of the stress transfer cone, and the stress plate is connected to the stress transfer cone The head is kept vertical, and a stress spring is set between the stress transfer cone and the stress plate; the backfill device can be installed on the cone of the excavator's breaker, and the stress plate of the backfill device is driven by the excavator to vibrate to the backfill. The filling is compacted, which can effectively ensure the backfilling effect of the backfilling hole. At the same time, during the backfilling process, the backfilling device can be used to push the backfilling into the backfilling hole. The tamping and pushing are integrated, which saves the time and cost of backfilling. The efficient use of equipment saves manpower and financial resources for backfilling.

Description

Backfilling device and backfilling method

technical field

The invention relates to the technical field of backfill holes, in particular to a backfill device and a backfill method.

Background technique

In Qinghai, Gansu, Shaanxi, Shanxi and other provinces represented by loess geology, there are large surface runoff erosion, far-reaching impacts from groundwater scouring, and the formation of sinkholes in the goafs of human-made mining operations.

Sinkholes come in a variety of forms, and their internal structures are complex and changeable. In the traditional treatment process, shallow cutting and excavation are mainly used, and then water-stabilized binders are rolled and formed to backfill. Or take grouting treatment to the hollow area to achieve a certain supporting capacity after consolidation. In order to provide load transfer, play a bearing role.

Traditional method of backfilling with inorganic binder: within 3m from the ground surface, according to the treatment area, pre-cut grooves, then select inorganic binders, and mix them mechanically to form filling materials such as lime soil, cement soil, and gravel soil. After determining the loose laying coefficient, carry out layered rolling;

Features: Insufficient processing depth, large disturbance to the surrounding area, high unit price of inorganic bonding materials. The compactor is not working effectively.

Traditional grouting backfill:

According to the scope of backfilling, cement slurry is mixed in large quantities, and high-pressure grouting and concrete are used to supplement the hollow parts of the sinkhole;

Features: As a backfilling method, the interface area is used for backfilling. The two media cannot be effectively bonded into one body. The cost of backfilling materials is high, and the cost is high, and the quality of backfilling is difficult to meet the requirements. As a hidden project, effective control cannot be carried out;

The traditional treatment method has the disadvantages of incomplete treatment, high cost of filling treatment materials, large shrinkage and deformation of grouting, high disposal cost, inability to fill deep sections, inability to operate and control large-scale machinery, unguaranteed degree of compaction, and continuous increase in hidden dangers and risks, etc. question.

Contents of the invention

In order to overcome the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of backfilling device and backfilling method that can be installed on the excavator, transmit the stress to the stress hammer plate, and expand the hollow point through layered vibration and dense extrusion.

In order to achieve the above object, the present invention adopts the following technical solution, a backfill device, including a stress transfer cone fixedly connected to the cone of the breaker in the excavator, the bottom of the stress transfer cone is fixedly connected with a stress plate, and The stress plate is kept perpendicular to the stress transfer cone, and a stress spring is arranged between the stress transfer cone and the stress plate.

The middle part of the stress plate is welded with a conical cylinder, the stress transfer conical head is inserted into the conical cylinder and extends into the stress spring inside the conical cylinder, and the stress spring is fixedly connected with the stress plate, the conical The upper end of the barrel is fixedly connected with the excavator through a wire rope.

The cone head of the breaking hammer is fixedly connected with the stress transfer cone head through a connecting hoop.

A plurality of ventilation holes are provided on the stress plate, and the plurality of ventilation holes are evenly distributed around the conical cylinder.

The hammer head of the stress transfer cone is inserted into the stress spring, and the upper end of the stress spring is locked on the upper end of the stress transfer cone.

The lower end of the stress plate is fixed with a column perpendicular to the stress plate.

The lower end of the stress plate is fixedly connected with a triangular cone head.

The lower end surface of the stress plate is fixedly connected with an arc-shaped cone head.

A method of backfilling, performed in the following steps:

Step 1: The dump truck dumps the backfill used to fill the sinkhole to the construction site;

Step 2: Push the soil body to the backfill position through the stress transfer cone at the end of the excavator, and then carry out layered compaction of the backfill in the backfill hole through the stress plate connected with the stress transfer cone, and compact the upper and lower positions; The compaction of the backfill in the backfill hole reaches 95%;

Step 3: After the flood season and heavy rainfall in the later stage, investigate the backfill points of the pavement. If subsidence occurs, continue to backfill and tamp until there is no water on the backfill surface and the road strength hardly changes.

In the second step, when the backfill is tamped, work is done according to the movement of the upper and lower lines, and the left and right overlap, and the distance between the overlapping points is quincunx and the movement is performed for tamping.

The beneficial effect of the invention is that: the engine power of the excavator is used to drive the cone head of the breaking hammer, and the high-energy stress hammer is connected through the hoop. The high-strength stress hammer is welded as a whole. After contacting the medium downward, the stress is transmitted to the stress hammer plate through the spring cone head. Through layered vibration, dense extrusion expands the hollow point, and the parallel hydraulic stress is extruded downward. , so that the loose soil reaches a compact state;

The stress transmission steel plate and the connecting cone head are welded with 2cm steel plate without gaps, and an anti-shock breaking spring is set at the connection part with the cone head of the breaking hammer. In order to prevent slipping during high-energy stress transmission, safety rings are symmetrically welded between the stress steel plate and the cone head, and are hung to the hanging point at the end of the breaker through the safety rope to prevent slipping.

Description of drawings

Fig. 1 is that the present invention is the structural representation of backfill device;

Fig. 2 is a schematic diagram of a stress plate connection structure in the present invention;

Fig. 3 is a schematic diagram of the structure of the breaker cone and the stress transfer cone in the present invention;

Fig. 4 is the structural representation of stress plate among the present invention;

Fig. 5 is a top view structural representation of a stress plate in the present invention;

Fig. 6 is a schematic structural view of a columnar body in the present invention;

Fig. 7 is a schematic structural view with a triangular conical head in the present invention;

Fig. 8 is a schematic structural view of an arc-shaped conical head in the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention.

The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features; in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

Example 1

As shown in Figures 1 and 2, a backfilling device includes a stress transfer cone 3 fixedly connected to a breaker cone 7 in an excavator 6, and a stress plate 4 is fixedly connected to the bottom of the stress transfer cone 3, And the stress plate 4 is kept perpendicular to the stress transfer cone 3 , and a stress spring 5 is arranged between the stress transfer cone 3 and the stress plate 4 . The device is installed on the breaker cone of the excavator when in use, and the driving power is provided by the excavator. When backfilling, the excavator drives the stress transfer cone 3 to push the backfill into the pile. Into the backfill hole, and then drive the stress transfer head = cone to vibrate, the stress transfer cone will drive the gravity plate to vibrate correspondingly during the vibration process, and compact the backfill that enters the backfill hole, ensuring the backfill hole Effective backfilling can be carried out, and it is guaranteed that the backfilling hole will not sink. The pressure spring 5 can ensure that when the stress transmission cone drives the pressure plate to vibrate, it can effectively play a buffering role, thereby avoiding When the stress plate collides with the backfill material, the stress plate is damaged.

Further, in order to facilitate the connection between the stress plate 4 and the stress transfer cone 3, as shown in FIG. And extend to the stress spring 5 in the conical cylinder 401 , and the stress spring 5 is fixedly connected with the stress plate 4 , and the upper end of the conical cylinder 401 is fixedly connected with the excavator 6 through the wire rope 1 . When installing, the pressure spring is packed into the barrel of the welded one-piece cone and stress plate, then the stress transfer cone is inserted into the cone, and the hammer of the stress transfer cone 3 is inserted into the Stress spring 5, and the upper end of stress spring 5 is stuck on the upper end of stress transfer cone 3. Then the upper end of the conical cylinder 401 is fixedly connected with the excavator by a wire rope, specifically, a circular cylinder is fixedly arranged on the top of the conical cylinder 401, and the radius of the circular cylinder is the same as the radius of the conical cylinder upper end. Similarly, when in use, the excavator drives the stress transmission cone 3 to rotate, and the stress transmission cone drives the compression spring to rotate. At this time, the stress plate vibrates under its drive to tamp and vibrate the backfill.

Further, in order to facilitate the connection between the breaker cone and the stress transmission hammer 3, the breaker cone 7 and the stress transmission cone 3 are fixedly connected by a connecting hoop 8 as shown in FIG. 3 . When connecting, align the lower end of the breaker cone 7 with the upper end of the stress transfer cone 3, then place the connecting hoop between the breaker cone 7 and the stress transfer cone 3, and then pull The tie bars connected with the hoop fixedly connect the breaker cone 7 with the stress transfer cone 3 .

Further, when the backfill hole is tamped through the stress plate, since there is air or water in the backfill, when the stress plate is tamped, the air or water in the backfill is squeezed out, which will produce a certain reaction force on the stress plate , leading to the tamping force of the stress plate on the backfill, in order to solve this purpose, a plurality of air holes 402 are provided on the stress plate 4 as shown in FIG. The vent hole can effectively ensure that when the stress plate is pressed down, the air can pass through the vent hole effectively, reducing the stress of the stress plate. At the same time, safety rings are symmetrically welded at the stress steel plate and the cone head, and are hung to the hanging point at the end of the breaker through the safety rope to prevent falling off.

Example 2

According to different soil properties, change the disposal method and change the stress transmission method.

For example, in the section with soft ground and uniform soil quality, as shown in Figure 1, the impact method of the stress plate is directly used for compaction.

Example 3

On the basis of Example 1, in the uneven formation with rocks, the lower end surface of the stress plate 4 as shown in Figure 7 can be fixedly connected with the arc-shaped cone head 11 to tamp the uneven formation with rocks to ensure compaction solidity.

Example 4

On the basis of Example 1, when the cohesive soil throwing filling medium is squeezed out, as shown in Figure 8, the lower end of the stress plate 4 is fixedly connected with a triangular cone head 10, and the triangular cone head 10 can be used to effectively treat the silt soil. Extrusion to ensure the compaction of silt soil.

Example 5

On the basis of Embodiment 1, when dealing with deep caverns, as shown in Figure 6, the lower end of the stress plate 4 is fixedly provided with a columnar body perpendicular to the stress plate 4, and the columnar body carries out stress transmission to deal with soft geology in the deep layer; to ensure that the deep layer The filling in the hole can be completely compacted.

The working process is to use the rated power of the excavator engine to drive the cone head of the breaker, connect the integrally welded stress transfer cone head through the hoop, transfer the stress to the steel plate in contact with the medium, and expand the cavity point through layered vibration and compact extrusion , so that the loose soil reaches a compact state.

The stress transmission steel plate and the connecting cone head are welded with 2cm steel plate without gaps, and an anti-shock breaking spring is set at the connection part with the cone head of the breaking hammer.

In order to prevent slipping during high-energy stress transmission, safety rings are symmetrically welded between the stress steel plate and the cone head, and are hung to the hanging point at the end of the breaker through the safety rope to prevent slipping.

A method of backfilling, performed in the following steps:

Step 1: The dump truck dumps the backfill used to fill the sinkhole to the construction site;

Step 2: Push the soil body to the backfill position through the stress transfer cone 3 at the end of the excavator, and then carry out layered compaction of the backfill in the backfill hole through the stress plate connected to the stress transfer cone 3, and compact the upper and lower positions ; Make the compaction of the backfill in the backfill hole reach 95%;

Step 3: After the flood season and heavy rainfall in the later stage, investigate the backfill points of the pavement. If subsidence occurs, continue to backfill and tamp until there is no water on the backfill surface and the road strength hardly changes.

In the second step, when the backfill is tamped, work is done according to the movement of the upper and lower lines, and the left and right overlap, and the distance between the overlapping points is quincunx and the movement is performed for tamping.

Sinkholes from the ground surface to a vertical treatment depth of 30m, including shallow mined-out areas, backfilling of strip foundations above 2m, and backfilling near the existing structures of the municipal pipe network, without being restricted by terrain changes.

Homogeneous geological sections are treated with plate hammers. The uneven geological section is treated with a spherical cone head. Crushed stone soil and gravel soil are treated with cone hammers. To expand and backfill the tomb or inclined alley, adjust the vibrating rod to deal with it.

Using the undisturbed soil, the mechanical operator places the cone head on the backfill medium, pushes the soil into the cavity to about 50cm, and puts the working end on the top of the backfill soil to perform work compaction. When the settlement and deformation reach the pre-control indicators, the next layer of backfilling can be carried out.

Features: It subverts the traditional processing method and is not affected by the region. In the process of processing the position of the backfill section, the undisturbed soil is used to save costs. At the same time, the compaction degree, deformation, and two-way indicators can be used for compaction control.

The above embodiment is only an illustration of the present invention, and does not constitute a limitation to the protection scope of the present invention. Any design that is the same as or similar to the present invention belongs to the protection scope of the present invention.

Claims (10)

1. a kind of backfilling apparatus, which is characterized in that including the stress being fixedly connected in excavator (6) on quartering hammer conehead (7) Transmit conehead (3), the bottom of the stress transfer conehead (3) is fixedly connected with stress plate (4), and the stress plate (4) with it is described Stress transfer conehead (3) keeps vertical, is equipped with stress spring (5) between the stress transfer conehead (3) and stress plate (4).

2. a kind of backfilling apparatus according to claim 1, which is characterized in that be welded with taper in the middle part of the stress plate (4) Cylinder (401), the stress transfer conehead (3) are inserted into conically shaped (401) and extend to the stress spring in conically shaped (401) (5) in, and the stress spring (5) is fixedly connected with stress plate (4), and upper end and the excavator (6) of the conically shaped (401) pass through Wirerope (1) is fixedly connected.

3. a kind of backfilling apparatus according to claim 1 or claim 2, which is characterized in that the quartering hammer conehead (7) and stress transfer Conehead (3) is fixedly connected by connecting anchor ear (8).

4. a kind of backfilling apparatus according to claim 2, which is characterized in that the stress plate (4) is equipped with multiple air holes (402), and multiple air hole (402) is evenly distributed on the surroundings of conically shaped (401).

5. a kind of backfilling apparatus according to claim 1, which is characterized in that the tup of the stress transfer conehead (3) is inserted into To in stress spring (5), and the upper end of the stress spring (5) is stuck in the upper end of stress transfer conehead (3).

6. a kind of backfilling apparatus according to claim 1 or claim 2, which is characterized in that the lower end of the stress plate (4) is fixed with The column (9) vertical with stress plate (4).

7. a kind of backfilling apparatus according to claim 1 or claim 2, which is characterized in that the lower end of the stress plate (4) is fixedly connected There are triangle conehead (10).

8. a kind of backfilling apparatus according to claim 1 or claim 2, which is characterized in that the lower end surface of the stress plate (4) is fixed to be connected It is connected to arc conehead (11).

9. a kind of earth-filling method, which is characterized in that follow the steps below:

Step 1: the backfill material for being used to fill out sinkhole is poured into construction site by dumper；

Step 2: the soil body is elapsed to backfill position by the stress transfer conehead (3) of excavator end, is then passed by stress The stress plate for passing conehead (3) connection carries out layering to the backfill material in backfill hole and hits reality, up and down poor position compacting；Make to backfill in hole The compactness of backfill material reaches 95%；

Step 3: in the case where the later period is by flood season and rainfall larger situation, road pavement backfill point is investigated, if any under generation Heavy situation continues to be backfilling and compacted, until backfilling surface without ponding and pavement strength hardly happens variation.

10. a kind of earth-filling method according to claim 9, which is characterized in that carried out in the step 2 to backfill material When compacting, according to upper offline position movement acting, left and right overlap joint, overlapped points spacing is tamped in blossom type and taking exercises.