Arrangement structure facilitating steel branch pipe transportation and lower adit construction

Abstract

The utility model provides an arrangement structure convenient for steel branch pipe transportation and lower adit construction, which comprises a reservoir, a plurality of water diversion main holes are arranged on one side of the reservoir, a plurality of water diversion branch holes are respectively arranged on one side, far away from the reservoir, of each water diversion main hole, and steel branch pipes are arranged at joints of the water diversion main holes and the water diversion branch holes. Wherein the outer side of one water diversion branch hole is excavated in an expanding mode to form a temporary branch hole, a communicating branch hole is formed between every two adjacent water diversion main holes, a traditional construction branch hole is omitted, the water diversion branch holes are excavated in an expanding mode to form the temporary branch holes, the communicating branch holes are formed between the adjacent water diversion main holes, and therefore steel branch pipes and discharged slag transportation are facilitated, and engineering investment and operation cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy and hydropower technical field especially relates to a kind of arrangement structure of convenient steel bifurcated pipe transport and lower adit construction. BACKGROUND

[0002] Under normal circumstances, for water conservancy and hydropower engineering that diversion system is buried in mountain, if steel bifurcated pipe is set in one-hole multi-machine engineering, steel bifurcated pipe transport is usually set a connecting branch hole, and the connecting branch hole is important passageway for steel bifurcated pipe transport and diversion tunnel slagging. Generally speaking, the method is necessary for the engineering that plant adopts middle development (buried in underground rock mass), and usually combined into plant traffic hole, bifurcated hole is opened at suitable position, so design can save certain engineering quantity, and can meet the demand of steel pipe and slagging. If plant adopts ground plant, it also needs to specially set a connecting branch hole. Since the connecting branch hole is opened, and water delivery system is operated under pressure, therefore, the connecting branch hole needs to be blocked to ensure the operation of water delivery system, since blocking cost and engineering quantity are too large, usually only part of connecting branch hole is blocked, therefore, there is the problem of water accumulation in unblocked connecting branch hole during operation, and pumping setting needs to be set, if leakage of blocking body is too large, even serious accidents such as water flooding plant may occur. SUMMARY

[0003] The utility model aims at overcoming the deficiency of prior art, and provides a kind of arrangement structure of convenient steel bifurcated pipe transport and lower adit construction, which can solve the problem that high blocking cost, long-term water accumulation and even water flooding plant may be caused by using connecting branch hole as steel bifurcated pipe transport passageway and slagging passageway.

[0004] Therefore, the utility model uses the following technical solutions:

[0005] A kind of arrangement structure of convenient steel bifurcated pipe transport and lower adit construction, including reservoir, the side of the reservoir is equipped with several diversion main holes, the side of each diversion main hole away from the reservoir is respectively equipped with several diversion branch holes, the junction of the diversion main hole and the diversion branch hole is equipped with steel bifurcated pipe, the outside of one of the diversion branch holes is expanded to form temporary branch hole, and connecting branch hole is arranged between adjacent two diversion main holes.

[0006] On the basis of using the above technical solutions, the utility model can also use the following further technical solutions, or use these further technical solutions in combination:

[0007] The diameter of the diversion branch hole is less than the diameter of the diversion main hole, and the diameter of the connecting branch hole, the diversion main hole and the temporary branch hole meets the transport requirement and slagging requirement of the steel bifurcated pipe.

[0008] The communication branch hole and the water diversion main hole are obliquely intersected, and the included angle between the two is 60-75 degrees.

[0009] The distance between the communication branch hole and the water diversion branch hole is greater than or equal to twice the diameter of the water diversion branch hole.

[0010] Compared with the prior art, the utility model has the following advantages and beneficial effects: the traditional construction branch hole is cancelled, the temporary branch hole is formed by expanding the water diversion branch hole, and the communication branch hole is arranged between the adjacent water diversion main holes, so that the steel bifurcated pipe and the slag transportation are facilitated, and the engineering investment and operation cost are saved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a plane layout of the utility model. DETAILED DESCRIPTION

[0012] In order to make the skilled in the art better understand the technical scheme of the utility model, the preferred implementation scheme of the utility model is described below in combination with specific embodiments, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar functional elements throughout the drawings, but it should be understood that the drawings are only for illustrative description, and cannot be understood as the limitation of the utility model; in order to better illustrate the embodiments, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted, and the positional relationship described in the drawings is only for illustrative description, and cannot be understood as the limitation of the utility model.

[0013] The utility model is further described below in combination with the drawings and embodiments, but is not used as the basis for limiting the utility model.

[0014] The utility model provides a kind of layout structure of convenient steel bifurcated pipe transportation and lower tunnel construction, including reservoir 5, the side of reservoir 5 is equipped with several water diversion main hole 1, and the side of each water diversion main hole 1 away from reservoir 5 is respectively equipped with several water diversion branch hole 3, and the junction of water diversion main hole 1 and water diversion branch hole 3 is equipped with steel bifurcated pipe 7, one of water diversion branch hole 3 is expanded to form temporary branch hole 2 outside, and communication branch hole 6 is arranged between adjacent two water diversion main holes 1.

[0015] As Figure 1As shown, two diversion main holes 1 are arranged, each of which is communicated with two diversion branch holes 3, a total of four diversion branch holes 3, and a powerhouse (not shown in the figure) is arranged at the right side of the diversion branch holes 3, and in the embodiment, a water power project with two hydraulic units and four units is taken as an example for illustration, wherein the two diversion branch holes 3 at the lower side belong to No. 1 unit, and the two diversion branch holes 3 at the upper side belong to No. 2 unit, and one of the diversion branch holes 3 at the lower side in the No. 1 unit is expanded outward, and the two sides of the expanded part are symmetrical about the axis, and the temporary branch hole 2 is formed after the expansion.

[0016] The diameter of the diversion branch hole 3 is smaller than that of the diversion main hole 1, and the diameters of the communication branch hole 6, the diversion main hole 1 and the temporary branch hole 2 meet the transportation requirements of the steel bifurcated pipe 7 and the requirements of slag discharge, so as to facilitate the transportation of the steel bifurcated pipe 7 from the powerhouse to the intersection of the diversion main hole 1 and the diversion branch hole 3 by the construction vehicle.

[0017] As can be seen from the figure, the diameters of the communication branch hole 6, the diversion main hole 1 and the temporary branch hole 2 are all greater than the width of the steel bifurcated pipe 7.

[0018] The communication branch hole 6 and the diversion main hole 1 are obliquely intersected and the included angle therebetween is 60°-75°, so as to facilitate the turning of the construction vehicle.

[0019] The distance between the communication branch hole 6 and the diversion branch hole 3 is greater than or equal to twice the diameter of the diversion branch hole 3, so as to ensure the stability of the surrounding rock during the excavation period.

[0020] The part of the temporary branch hole 2 exceeding the diameter of the diversion branch hole 3 and the communication branch hole 6 are treated by backfilling and lining with concrete after the completion of the construction of the steel bifurcated pipe 7, and due to the small expanded part of the temporary branch hole 2 and the short communication branch hole 6, the amount of concrete required after the construction is reduced, which greatly saves the engineering cost, and the safety risk of seepage backflow into the powerhouse during the operation period can be avoided after the backfilling of the two.

[0021] According to the description and the drawings of the utility model, the person skilled in the art can easily manufacture or use the utility model of a kind of arrangement structure convenient for steel bifurcated pipe transportation and lower tunnel construction, and can produce the positive effect recorded in the utility model.

[0022] It should be noted that the terms "include" and "have" in the specification and claims of the utility model and the above-mentioned drawings and any modification thereof are intended to cover non-exclusive inclusion. The terms "mount", "arrange", "provide with", "connect", "connect", "sleeve" should be understood broadly. For example, it can be fixedly connected, detachably connected or integrally configured, it can be mechanically connected or electrically connected, it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication between two mechanisms, elements or components. For the person skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0023] In the description of the utility model, need understanding is, the term "one end", "the other end", "the outside", "the inside", "horizontal", "end", "length", "outer end", "left", "right" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the indicated mechanism or element must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as the restriction of the utility model. The phrase "first", "second" is only used for the convenience of description, and is not indicate or imply relative importance.

[0024] In addition, in the practice of the claims of the utility model, those skilled in the art can understand and influence the change to the disclosed embodiments through the study of the drawings, disclosure and attached claims. In addition, in the claims, the specification, "include", "contain" and so on do not exclude other elements or steps, and the singular noun does not exclude its plural form.

[0025] The above described are only the preferred embodiments of the utility model, and are not used to limit the implementation scope of the utility model, that is, all equivalent changes and modifications made according to the utility model are covered in the scope of claims of the utility model, which will not be listed one by one here.

Claims

1. A layout structure for facilitating the transportation of steel bifurcated pipes and the construction of lower adit tunnels, comprising a reservoir (5), characterized in that: A plurality of water diversion main tunnels (1) are provided on one side of the reservoir (5), and a plurality of water diversion branch tunnels (3) are provided on the side of each water diversion main tunnel (1) away from the reservoir (5). A steel bifurcation pipe (7) is provided at the junction of the water diversion main tunnel (1) and the water diversion branch tunnel (3). The outer side of one of the water diversion branch tunnels (3) is expanded to form a temporary branch tunnel (2), and a connecting branch tunnel (6) is provided between two adjacent water diversion main tunnels (1).

2. The arrangement structure for facilitating the transportation of steel bifurcated pipes and the construction of lower adit tunnels as claimed in claim 1, characterized in that: The diameter of the water diversion branch tunnel (3) is smaller than the diameter of the water diversion main tunnel (1), and the diameters of the connecting branch tunnel (6), the water diversion main tunnel (1) and the temporary branch tunnel (2) meet the transportation requirements and slag discharge requirements of the steel bifurcated pipe (7).

3. The arrangement structure for facilitating the transportation of steel bifurcated pipes and the construction of adit tunnels as claimed in claim 1, characterized in that: The connecting branch tunnel (6) and the water diversion main tunnel (1) intersect obliquely, and the angle between the two is 60° to 75°.

4. The arrangement structure for facilitating the transportation of steel bifurcated pipes and the construction of adit tunnels as claimed in claim 1, characterized in that: The distance between the connecting branch hole (6) and the water diversion branch hole (3) is greater than or equal to twice the diameter of the water diversion branch hole (3).

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