CN217896702U - Drop well structure - Google Patents

Abstract

The utility model provides a drop well structure relates to shaft construction technical field. The drop well structure comprises a drop well; the drop well is of a reinforced concrete structure and is divided into a plurality of sections along the well depth direction of the drop well; the inner diameter of the multiple sections of drop wells decreases progressively from the well mouth to the well bottom of the drop well, so that a staggered part positioned on the wall of the drop well is formed between every two adjacent sections of drop wells. The utility model provides a drop well structure can effectively guarantee drop well's intensity and life through the drop well that adopts reinforced concrete structure, and simultaneously, the wrong platform portion on the drop well wall of a well can reduce the impact of mountain flood to the drop well wall of a well. And because the inner diameter of the drop well is gradually reduced from the well mouth to the well bottom of the drop well, the wall thickness of the well wall of the drop well close to the well bottom is larger, and the drop well is more easily suitable for mountain floods with large water volume.

Description

Drop well structure

Technical Field

The utility model belongs to the technical field of the shaft construction technique and specifically relates to a drop well structure is related to.

Background

When building construction is carried out in a mountain area, in order to eliminate potential safety hazards caused by large rainfall of torrential floods in rainy season, a vertical water well is usually arranged on a mountain slope for drainage.

The existing vertical water well is generally formed by adopting a precast concrete socket pipe, but the existing vertical water well is still difficult to adapt to mountain floods with large water flow, and the well wall of the vertical water well is easy to be damaged by the impact of the mountain floods.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drop well structure to alleviate the vertical well that exists and locate on the hillside and be difficult to adapt to big water volume mountain flood among the prior art, its wall of a well easily receives the impact of mountain flood and the technical problem who damages.

In a first aspect, the utility model provides a drop well structure, which comprises a drop well;

the drop well is of a reinforced concrete structure and is divided into a plurality of sections along the well depth direction of the drop well;

the inner diameter of each drop well decreases progressively from the well mouth to the well bottom, so that a staggered part located on the wall of the drop well is formed between every two adjacent drop wells.

In an optional embodiment, the device further comprises a flood discharge ditch;

the flood discharge ditch is of a reinforced concrete structure, is fixed on a hillside along the slope direction of the hillside of the mountain body, and is stepped at the bottom;

and the well mouth of the water drop well is communicated with the end part, positioned at the lower part, of the two ends of the flood discharge ditch.

In an optional embodiment, the flood control system further comprises a supporting member which is vertically fixed in a soil body of a mountain body, and the supporting member and the flood discharge ditch are respectively located on two sides of the drop well.

In an optional embodiment, a top end of the supporting part is provided with a crown beam, and the crown beam is fixed on a hillside of a mountain body;

and the well mouth edge of the drop well is connected with the crown beam.

In an optional embodiment, a drainage ditch extending along the length direction of the crown beam is fixed on the side of the crown beam facing the drop well, and the drainage ditch is communicated with the wellhead of the drop well.

In an optional embodiment, the supporting member includes a plurality of supporting piles, the supporting piles are arranged at intervals, and a supporting wall is fixedly connected between two adjacent supporting piles.

In an optional embodiment, the flood discharge channel further comprises a guide wall, wherein the guide wall is vertically fixed in a soil body of a mountain body, and the top end of the guide wall is fixedly connected with the end part, located at the high position, of the two ends of the flood discharge channel.

In an alternative embodiment, each step of the trench bottom of the flood discharge trench includes a top surface and a side wall, the top surface of the step is an inclined surface, and the inclined surface is inclined downwards from a side far away from the drop well to a side close to the drop well.

In an alternative embodiment, the inclined surface is angled at 3.6 degrees relative to the horizontal.

In an optional embodiment, the drop well comprises a column body and a reinforcement cage, the column body is made of concrete, and the reinforcement cage is buried and fixed in the column body.

The utility model provides a drop well structure which comprises a drop well; the drop well is of a reinforced concrete structure and is divided into a plurality of sections along the well depth direction of the drop well; the inner diameter of each of the plurality of sections of drop wells decreases progressively from the well mouth to the well bottom of the drop well, so that a staggered part positioned on the wall of the drop well is formed between every two adjacent sections of drop wells. Wherein, the drop well in this drop well structure can be guaranteed to the reinforced concrete structure has sufficient intensity, can guarantee simultaneously that the drop well is whole not to have the leakage point to effectively guarantee the drainage function. In addition, the reinforced concrete structure also enables the drop well to play a supporting role on the soil body of the mountain, so that the safety of the construction process is ensured. The drop well can be fixed in the soil body of the mountain body in a cast-in-place mode, specifically, a pile hole can be dug in the soil body of the mountain body, then a steel reinforcement cage is placed in the pile hole, concrete is poured into the pile hole, after the concrete is solidified, construction machinery such as a rotary drilling rig and the like is utilized to perform rotary drilling and core taking and drill lifting in the middle of the solidified concrete, and therefore the purpose of taking cores and forming wells is achieved. In the process of coring and well formation, the drop wells need to be constructed in sections so as to ensure that the inner diameters of the multiple sections of drop wells decrease progressively from the well mouth to the well bottom of the drop well, and therefore a staggered part is formed between two adjacent sections of drop wells. It should be noted that, the above coring and well-forming process is easy to construct and form a drop well with a staggered part on the inner wall, so that the construction process can be greatly simplified, and the construction efficiency can be improved. When large flood mountain floods flow to the drop well along the mountain hillside, the mountain floods can advance enter the well mouth and then fall to the well bottom, and when the mountain floods flow enters the drop well and falls in the well, the mountain floods can impact the well wall of the drop well, but the staggered platform part can generate larger reaction force to the mountain floods, so that the impact potential energy when the mountain floods fall is reduced, the impact of the mountain floods on the well wall of the drop well is favorably reduced, and the service life of the well wall of the drop well can be ensured.

Compared with the prior art, the utility model provides a drop well structure can effectively guarantee drop well's intensity and life through adopting reinforced concrete structure, can utilize the staggered platform portion on the drop well wall of a well to reduce mountain flood to drop well's impact simultaneously. In addition, the inner diameter of the drop well is gradually reduced from the well mouth of the drop well to the well bottom, so that the wall thickness of the well wall of the drop well close to the well bottom is larger, and the drop well is more easily suitable for mountain floods with large water volume.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a drop well structure provided by an embodiment of the present invention;

fig. 2 is a side view of a drop well structure provided by the embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of the flood discharge trench according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of a reinforcement cage of a drop well according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a flood discharge trench provided in an embodiment of the present invention;

fig. 6 is a cross-sectional view of a drop well, a support member, a communicating pipe and a collector well provided by the embodiment of the utility model.

An icon: 1-a drop well; 10-a staggered land portion; 11-a reinforcement cage; 110-stirrup; 111-longitudinal rebar; 112-internal supporting ribs; 113-protective layer support ribs; 2-flood discharge ditch; 20-step; 3-supporting the parts; 4-a crown beam; 5-a drainage ditch; 6, a guide wall; 7-a water collecting well; 8-communicating pipe; 80-supporting table.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example (b):

as shown in fig. 1 and fig. 2, the drop well structure provided by the present embodiment includes a drop well 1; the drop well 1 is of a reinforced concrete structure, and the drop well 1 is divided into a plurality of sections along the well depth direction of the drop well 1; from the well mouth of the drop well 1 to the well bottom, the inner diameter of the multi-section drop well 1 decreases progressively, so that a staggered part 10 positioned on the wall of the drop well 1 is formed between two adjacent sections of drop wells 1.

Wherein, drop well 1 in this drop well structure can be guaranteed to the reinforced concrete structure has sufficient intensity, can guarantee drop well 1 whole no leakage point simultaneously to effectively guarantee the drainage function. In addition, the reinforced concrete structure also enables the drop well 1 to play a supporting role on the soil body of the mountain, so that the safety of the construction process is ensured.

In above-mentioned drop well 1 can be fixed in the soil body of massif through cast-in-place mode, specifically, can dig in the soil body of massif earlier and establish the stake hole, then put into steel reinforcement cage 11 in the stake hole, then pour the concrete to the stake downthehole, after the concrete solidifies, reuse construction machinery such as rotary drilling rig to dig the drilling and get the core and carry and bore at the concrete middle part that solidifies to reach the purpose of getting the core well. In the coring and well-forming process, the drop wells 1 are constructed in sections, so that the inner diameters of the multiple sections of drop wells 1 are ensured to be decreased gradually from the well heads of the drop wells 1 to the well bottoms, and a staggered platform part 10 is formed between two adjacent sections of drop wells 1.

It should be noted that the above coring and well-forming process is easy to construct and form the drop well 1 with the staggered part 10 on the inner wall, so that the construction process can be greatly simplified, and the construction efficiency can be improved. When large-flood mountain floodwater flows to the drop well 1 along the mountain slope, the mountain floodwater can enter the wellhead and then fall to the well bottom, and when the mountain floodwater flows into the drop well 1 and falls in the well, the well wall of the drop well 1 can be impacted, but at the moment, the staggered part 10 can generate large reaction force for the mountain floodwater, so that the impact potential energy when the mountain floodwater falls is reduced, the impact of the mountain floodwater on the well wall of the drop well 1 is favorably reduced, and the service life of the well wall of the drop well 1 can be ensured.

It should be noted that, a reinforcement cage 11 is embedded in the concrete of the drop well 1, and a concrete layer between the outer wall of the reinforcement cage 11 and the inner wall of the drop well 1 is a protective layer of the reinforcement cage 11, and the protective layer has a thickness requirement to protect the reinforcement cage 11. The staggered platform part 10 of the wall of the drop well 1 in the embodiment can reduce the impact of mountain flood on the drop well 1, and can avoid the insufficient thickness of the protective layer on the inner wall of the drop well 1 caused by the deviation gradually generated by the perpendicularity of a drilling machine in the coring and well forming process.

Compared with the prior art, the drop well structure that this embodiment provided can effectively guarantee drop well 1's intensity and life through adopting reinforced concrete structure, can utilize the staggered platform portion 10 on the drop well 1 wall of a well to reduce mountain flood to drop well 1's impact simultaneously. In addition, the inner diameter of the drop well 1 is gradually reduced from the well mouth to the well bottom of the drop well 1, so that the wall thickness of the well wall of the drop well 1 close to the well bottom is larger, and the drop well is more suitable for mountain flood with large water volume.

As shown in fig. 1, fig. 2 and fig. 3, the drop well structure provided by the present embodiment further includes a flood discharge ditch 2; the flood discharge ditch 2 is of a reinforced concrete structure, the flood discharge ditch 2 is fixed on a hillside along the slope direction of the hillside of the mountain body, and the bottom of the flood discharge ditch 2 is in a step shape; the wellhead of the drop well 1 is communicated with the lower end of the two ends of the flood discharge ditch 2.

The reinforced concrete structure can guarantee the intensity of the flood discharge ditch 2 and can effectively guarantee the connection intensity between the flood discharge ditch 2 and the mountain slope.

The flood discharge ditch 2 can guide the mountain flood water to flow to the drop well 1, and the stepped ditch bottom of the flood discharge ditch 2 can reduce the potential energy of the mountain flood by using the multistage steps 20 at the ditch bottom, so that the impact of the mountain flood on the drop well 1 is further relieved.

As shown in fig. 1 and 2, the drop well structure provided by this embodiment further includes a supporting member 3, the supporting member 3 is vertically fixed in the soil body of the mountain, and the supporting member 3 and the flood discharge ditch 2 are respectively located at two sides of the drop well 1.

The supporting piece 3 can not only be used for reinforcing and supporting the soil body of the mountain body, but also can protect the drop well 1.

Further, a crown beam 4 is arranged at the top end of the supporting part 3, and the crown beam 4 is fixed on a hillside of a mountain body; the wellhead edge of the drop well 1 is connected with the crown beam 4.

Because the crown beam 4 is fixed on the hillside of the mountain body, and the well mouth of the drop well 1 is positioned on the hillside, the top of the crown beam 4 and the well mouth of the drop well 1 form a height difference, and the height difference enables the crown beam 4 to form a water retaining dam, so that mountain floodwater can be blocked, the mountain floodwater can more easily flow into the drop well 1, and the impact energy release of the mountain floodwater can be further reduced.

Specifically, the difference in height between the top of the crown beam 4 and the wellhead of the drop well 1 may be 500 mm.

In order to improve the connection strength between the crown beam 4 and the drop well 1, the drop well 1 and the crown beam 4 can be connected through tensile members such as reinforcing steel bars, the periphery of each tensile member can be covered with a concrete layer, and the concrete layer is fixedly connected with the crown beam 4 and the wellhead edge of the drop well 1.

Furthermore, a cement mortar layer can be filled in the joint between the crown beam 4 and the edge of the wellhead of the drop well 1 on the periphery side of the concrete layer.

It can be seen that the drop well 1 of the embodiment can enhance the connection strength between the drop well 1 and the mountain through the crown beam 4, the support member 3 and the flood discharge ditch 2, thereby effectively ensuring the structural stability of the drop well 1 in the mountain soil.

As shown in fig. 1 and 2, a drainage ditch 5 extending in the length direction of the crown beam 4 is fixed to the side of the crown beam 4 facing the drop well 1, and the drainage ditch 5 is communicated with the wellhead of the drop well 1.

The length of the crown beam 4 is generally larger than the diameter of the drop well 1, so in order to make it easier for the torrential water blocked by the crown beam 4 to flow into the drop well 1, in the present embodiment, it is preferable that a drainage ditch 5 extending along the length direction of the crown beam 4 is fixed on the side of the crown beam 4 facing the drop well 1, and the drainage ditch 5 is used for guiding the torrential water blocked by the crown beam 4 to flow into the drop well 1.

Wherein, escape canal 5 is fixed in the hillside surface of massif, and guan liang 4 and escape canal 5 all can be concrete structure, and the joint strength of escape canal 5 and guan liang 4 can effectively be guaranteed this moment.

In this embodiment, the supporting member 3 includes a plurality of supporting piles, and a plurality of supporting piles are arranged at intervals, and a supporting wall is fixedly connected between two adjacent supporting piles.

Wherein, the supporting piles and the supporting wall are both of reinforced concrete structures. The support system formed by connecting the support piles and the support walls can effectively guarantee the stability of soil bodies of mountain bodies and can play an effective protection role for the drop wells 1.

In practical application, when the drop well 1 is connected with the flood discharge ditch 2 and the concrete of the drop well 1 and the concrete of the flood discharge ditch 2 are solidified, soil can be excavated on one side of the drop well 1, which is back to the flood discharge ditch 2, and a support pile and a support wall are constructed. In order to ensure the stability of the drop well 1, as shown in fig. 1, support piles and support walls are arranged at intervals from the drop well 1.

The height of the supporting pile and the height of the supporting wall are both high, and in order to ensure the construction stability, the supporting pile and the supporting wall can be formed by adopting a construction mode of excavating soil body layer by layer and pouring and forming layer by layer.

It should be noted that, in the process of constructing the supporting piles and the supporting wall, in order to ensure the stability of the soil body of the mountain and prevent the soil body from collapsing, anchor pulling measures such as anchor rod driving or anchor cable connection and the like can be performed on the soil body of the mountain to reinforce.

As shown in fig. 3, the drop well structure provided by this embodiment further includes a guide wall 6, the guide wall 6 is vertically fixed in the soil body of the mountain, and the top end of the guide wall 6 is fixedly connected to the end portion of the flood discharge trench 2 located at the high position.

The guide wall 6 can also be of a reinforced concrete structure, and particularly, the guide wall 6 and the flood discharge ditch 2 can be constructed and formed at the same time.

Wherein, lead wall 6 not only can promote the stability of being connected between flood discharge ditch 2 and the massif soil body, and can protect the massif soil body, avoid causing soil erosion and water loss because of rainwash.

In this embodiment, a steel mesh may be embedded in the concrete layer of the guide wall 6 to reinforce the structure of the guide wall 6.

As shown in fig. 5, the flood discharge trench 2 provided in this embodiment includes a sidewall and a trench bottom, and a reinforcement layer may be embedded in both the concrete layer of the sidewall and the concrete layer of the trench bottom, where the reinforcement layer includes a plurality of reinforcements distributed at intervals.

In the present embodiment, it is preferable that the width of the end opening of the flood discharging trench 2 at the high position is 2 meters, the width of the end opening at the low position is 1.5 meters, and the slope ratio of the flood discharging trench 2 may be 5%.

As shown in fig. 2 and 3, each step 20 of the trench bottom of the flood discharge trench 2 includes a top surface and a side wall, the top surface of the step 20 is an inclined surface, and the inclined surface is inclined downward from a side far away from the drop well 1 to a side close to the drop well 1.

The inclined surface enables the flood discharge ditch 2 to guide the mountain torrent water to flow into the drop well 1 more easily, and the liquidity of the mountain torrent water can be guaranteed while the impact of the mountain torrent water is relieved.

Furthermore, the included angle of the inclined plane relative to the horizontal plane is 3.6 degrees.

The inclined plane of the step 20 can effectively ensure the potential energy reduction effect of the bottom of the flood discharge ditch 2 on the mountain flood on the premise of ensuring the fluidity of the mountain flood at 3.6 degrees.

As shown in fig. 4, the drop well 1 includes a column body and a reinforcement cage 11, the column body is made of concrete, and the reinforcement cage 11 is buried and fixed in the column body.

The steel reinforcement cage 11 can be combined together with the cylinder of concrete and effectively guarantee the structural strength of drop well 1, and wherein, the cylinder can form hollow structure through the mode of digging the core soon to form drop well 1.

In order to ensure the strength of the reinforcement cage 11, as shown in fig. 4, the reinforcement cage 11 may include a stirrup 110 and a plurality of longitudinal reinforcements 111, the plurality of longitudinal reinforcements 111 are circumferentially spaced apart from each other along the column, and the stirrup 110 may be spirally spaced along the axial direction of the reinforcement cage 11 and sequentially connected to the plurality of longitudinal reinforcements 111.

Further, as shown in fig. 4, an inner wall of the reinforcement cage 11 may be fixedly connected with an annular inner support rib 112, the inner support rib 112 may be multiple, and the multiple inner support ribs 112 are distributed at intervals along the axial direction of the reinforcement cage 11.

When a solid column is formed in construction, the lower part of the reinforcement cage 11 needs to be arranged in a pre-excavated pile hole, and then objects such as cushion blocks are used for supporting between the outer wall of the reinforcement cage 11 and the inner wall of the pile hole, so that an outer protective layer of the reinforcement cage 11 is formed. In this embodiment, as shown in fig. 4, the outer wall of the reinforcement cage 11 may further be fixed with a protective layer support rib 113, and the protective layer support rib 113 is used to support the reinforcement cage 11 during the construction process, so that a space is provided between the reinforcement cage 11 and the inner wall of the pile hole, and the space is used to form an outer protective layer of the reinforcement cage 11.

The protective layer support rib 113 may be formed by welding a straight steel bar and a semi-circular steel bar, an opening end of the semi-circular steel bar is welded and fixed to the straight steel bar, and the straight steel bar is welded and fixed to the outer wall of the steel reinforcement cage 11. The radius of the semi-annular reinforcement bars may be 50 mm, and the thickness of the outer protective layer of the reinforcement cage 11 formed at this time is correspondingly 50 mm.

In this embodiment, the number of the protective layer support ribs 113 may also be multiple, and the plurality of protective layer support ribs 113 are distributed at intervals along the axial direction of the reinforcement cage 11.

Further, the well depth of the drop well 1 may be 23 meters, and both the distance between two adjacent inner support ribs 112 and the distance between two adjacent protective layer support ribs 113 may be 1.5 meters.

As mentioned above, in this embodiment, the drop well 1 is formed by drilling and coring the above-mentioned column body, and in the coring and well-forming process, a drilling machine needs to be used to dig a pile hole in a mountain soil body, and when digging the pile hole, a total station can be used to position the center of the pile hole, so as to ensure that the pile hole formed by drilling is accurate. Before excavation, can also bury a pile casing underground in stake hole location department, utilize to protect a section of thick bamboo and support the soil body, protect a section of thick bamboo top and need be higher than the soil body surface to drilling location and protect the stake hole. In drilling process, can adjust earlier the rig and counterpoint in order to guarantee the drilling process precision, after drilling, can also continue to drill in order to be less than pile bottom design elevation in pile hole bottom, can fill concrete layer in order to carry out the back cover in the position that is less than pile hole bottom then, the top on this concrete layer is pile hole bottom promptly.

After the pile hole is excavated and formed, the reinforcement cage 11 is placed into the pile hole, concrete can be poured into the pile hole, and after the concrete strength reaches 50% of the design strength, a rotary drilling rig is adopted to core and form a well so as to form the drop well 1. When coring is performed, the core is performed in a segmented manner, when the staggered platform part 10 of the well wall of the drop well 1 in the embodiment is one, the drop well 1 is divided into an upper section and a lower section, and specifically, when coring is performed on the upper section of the drop well 1, the aperture after coring can be controlled to be 1.5 meters; when coring is carried out on the lower drop well 1, the aperture after coring can be controlled to be 1.3 meters.

As shown in fig. 6, the drop well structure provided by this embodiment further includes a water collecting well 7 and a communicating pipe 8; the water collecting well 7 is arranged on one side of the support piece 3 back to the water drop well 1; the position of the supporting piece 3 close to the bottom of the supporting piece is provided with a through hole penetrating through the two sides of the supporting piece, the position of the well wall of the water collecting well 7 close to the bottom of the water collecting well is provided with an opening, the position of the well wall of the water dropping well 1 close to the bottom of the well is provided with an opening, the communicating pipe 8 is arranged in the through hole of the supporting piece 3, one end of the communicating pipe 8 is communicated with the opening of the well wall of the water collecting well 7, and the other end of the communicating pipe is communicated with the opening of the well wall of the water dropping well 1.

Wherein, sump pit 7 is the drainage well in the municipal pipe network, and communicating pipe 8 is used for guiding the torrential flood in drop well 1 and gets into sump pit 7 to arrange to the external world through sump pit 7.

The communicating pipe 8 can be of a reinforced concrete structure, and further, the communicating pipe 8 can be a prefabricated reinforced concrete pipe. For strengthening the joint strength between the collecting well 7, the communicating pipe 8, the supporting piece 3 and the drop well 1, the collecting well 7, the communicating pipe 8, the supporting piece 3 and the drop well 1 are preferably connected through reinforcing steel bars in pairs in the embodiment, the outer sides of the reinforcing steel bars are coated with concrete layers, and the seams on the peripheral sides of the concrete layers can be filled with cement mortar layers.

In order to improve the stability of the communication pipe 8 in the soil body, a concrete support table 80 can be fixedly connected below the communication pipe 8, and the support table 80 is used for forming a concrete back cover for the communication pipe 8 and playing a role in supporting the communication pipe 8.

Further, the pipe wall of the communicating pipe 8 includes a top portion close to the surface of the mountain and a bottom portion far from the surface of the mountain, and in order to alleviate the impact of the mountain flood on the water collecting well 7, the inner side of the pipe wall of the bottom portion of the communicating pipe 8 is preferably provided with a stepped drop platform.

The top of each step 20 of the drop platform can be provided with a slope which inclines downwards from the side close to the drop well 1 to the side close to the water collecting well 7, and the inclination angle of the slope relative to the horizontal plane can also be 3.6 degrees.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A drop well structure, characterized by comprising a drop well (1);

the drop well (1) is of a reinforced concrete structure, and the drop well (1) is divided into a plurality of sections along the well depth direction of the drop well (1);

from the well head of drop well (1) to the shaft bottom, the internal diameter of multistage drop well (1) decreases progressively to make two sections adjacent drop well (1) between form and be located staggered part (10) on the drop well (1) wall of a well.

2. A drop well structure according to claim 1, further comprising a flood discharge trench (2);

the flood discharge ditch (2) is of a reinforced concrete structure, the flood discharge ditch (2) is fixed on a hillside along the slope direction of the hillside of a mountain body, and the bottom of the flood discharge ditch (2) is in a step shape;

and the wellhead of the water drop well (1) is communicated with the end part, positioned at the lower part, of the two ends of the flood discharge ditch (2).

3. Drop well structure according to claim 2, characterized by further comprising a brace (3), wherein the brace (3) is vertically fixed in the soil mass of a mountain, and the brace (3) and the flood discharge trench (2) are respectively located on both sides of the drop well (1).

4. The drop well structure according to claim 3, characterized in that the top end of the supporting member (3) is provided with a crown beam (4), and the crown beam (4) is fixed on the hillside of the mountain body;

the well mouth edge of the drop well (1) is connected with the crown beam (4).

5. The drop well structure according to claim 4, characterized in that a drainage ditch (5) extending in the length direction of the crown beam (4) is fixed to the side of the crown beam (4) facing the drop well (1), and the drainage ditch (5) is communicated with the wellhead of the drop well (1).

6. The drop well structure according to claim 4, wherein the supporting member (3) comprises a plurality of supporting piles, the supporting piles are arranged at intervals, and a supporting wall is fixedly connected between two adjacent supporting piles.

7. A drop well structure according to any of claims 2-6, further comprising a guide wall (6), wherein the guide wall (6) is vertically fixed in the soil body of a mountain, and the top end of the guide wall (6) is fixedly connected with the end of the flood discharge ditch (2) which is positioned at the high position.

8. Drop well structure according to any of claims 2-6, characterized in that each step (20) of the trench bottom of the flood spillway (2) comprises a top surface and a side wall, the top surface of the step (20) is an inclined surface, and the inclined surface slopes downwards from the side away from the drop well (1) to the side close to the drop well (1).

9. The drop well structure of claim 8, wherein the inclined surface is at an angle of 3.6 degrees with respect to the horizontal.

10. Drop well structure according to any of claims 1-6, characterized in that drop well (1) comprises a column made of concrete and a reinforcement cage (11), and that reinforcement cage (11) is buried and fixed in the column.

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