阅读说明：本技术 一种用于水利工程建设的双层式围堰 (A two-layer equation cofferdam for hydraulic engineering construction ) 是由 袁经宇 于 2020-12-18 设计创作，主要内容包括：本发明公开了一种用于水利工程建设的双层式围堰,涉及水利工程技术领域,解决了现有围堰的隔音降噪的效果较差,施工时发出的嘈杂声传播距离较远,容易干扰附近居民的起居的问题。一种用于水利工程建设的双层式围堰,包括主围堰,副围堰和凸块,所述主围堰为口字形结构,且主围堰的底部设置有一处底板；所述底板的顶部设置有一处副围堰；所述主围堰的四面外壁上均开设有一处外槽,且每处外槽内均通过弹簧安装有一组滑条；所述主围堰上套滑安装有一处挡堰,且挡堰为口字形结构；所述主围堰四面外壁的底部均设置有一处外板。本发明利用四组凸块的凹凸不平做到了物理所述的漫反射原理,起到了较好的隔音降噪效果。(The invention discloses a double-layer cofferdam for hydraulic engineering construction, relates to the technical field of hydraulic engineering, and solves the problems that the existing cofferdam has poor sound insulation and noise reduction effects, the noise generated during construction has a long propagation distance, and the living of nearby residents is easily interfered. A double-layer cofferdam for hydraulic engineering construction comprises a main cofferdam, an auxiliary cofferdam and a bump, wherein the main cofferdam is of a square structure, and the bottom of the main cofferdam is provided with a bottom plate; the top of the bottom plate is provided with an auxiliary cofferdam; the four outer walls of the main cofferdam are all provided with an outer groove, and a group of sliding strips are arranged in each outer groove through springs; a weir is sleeved on the main cofferdam in a sliding manner and is in a square structure; and the bottoms of the four outer walls of the main cofferdam are provided with an outer plate. The invention utilizes the unevenness of the four groups of bumps to realize the principle of diffuse reflection physically, thereby achieving better sound insulation and noise reduction effects.)

1. The utility model provides a two-layer equation cofferdam for hydraulic engineering construction which characterized in that: the cofferdam comprises a main cofferdam (1), wherein the main cofferdam (1) is of a square structure, and the bottom of the main cofferdam (1) is provided with a bottom plate (2); the top of the bottom plate (2) is provided with an auxiliary cofferdam (3); the four outer walls of the main cofferdam (1) are all provided with an outer groove, and a group of sliding strips (4) are arranged in each outer groove through springs; the four groups of sliding strips (4) are of rectangular structures; a first filter plate (5) is arranged between the inner wall of the main cofferdam (1) and the outer wall of the auxiliary cofferdam (3), and a plurality of filter holes are uniformly arranged at the top of the first filter plate (5); a weir (6) is sleeved on the main cofferdam (1) in a sliding manner, and the weir (6) is in a square structure; the bottom of the four outer walls of the main cofferdam (1) is provided with an outer plate (7).

2. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the main cofferdam (1) comprises sliding chutes (101) and sliding plates (102), two groups of sliding chutes (101) are formed in the inner side of the main cofferdam (1), one sliding plate (102) is arranged in each group of sliding chutes (101), and a group of springs are arranged between the bottom of each sliding plate (102) and the top of the bottom plate (2).

3. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the bottom plate (2) comprises fixed inserting columns (201), a top groove is formed in the middle of the top of the bottom plate (2), and a group of fixed inserting columns (201) is arranged at the bottom of the bottom plate (2); and one group of the fixed inserting columns (201) is in a conical structure.

4. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the auxiliary cofferdam (3) comprises inner plates (301) and bumps (302), wherein one inner plate (301) is arranged on each of the four inner walls of the auxiliary cofferdam (3), and a group of bumps (302) is arranged on the inner side of each inner plate (301); the four groups of bumps (302) are in a trapezoidal structure.

5. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the slide bars (4) comprise connecting plates (401) and baffle frames (402), the outer ends of eight slide bars (4) are respectively and rotatably provided with one connecting plate (401), and the other end of each group of connecting plates (401) is connected with one baffle frame (402) through a bearing; the blocking frame (402) at four positions is of an arc-shaped structure.

6. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the first filter plate (5) comprises support columns (501) and second filter plates (502), wherein four support columns (501) are arranged at the bottom of the first filter plate (5), and one second filter plate (502) is arranged at the bottom ends of the four support columns (501); the top of the second filter plate (502) is provided with a plurality of filter grooves.

7. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the weir (6) comprises side plates (601) and floating plates (602), two side plates (601) are arranged on the outer walls of four sides of the weir (6), and one floating plate (602) is arranged at the outer end of each side plate (601); the eight floating plates (602) are of circular structures.

8. The double-layer cofferdam for hydraulic engineering construction according to claim 1, characterized in that: the outer plate (7) comprises flow grooves (701), the outer sides of the outer plates (7) at four positions are of arc-shaped structures, and a group of flow grooves (701) are formed in the outer sides of the outer plates (7) at four positions.

Technical Field

The invention relates to the technical field of hydraulic engineering, in particular to a double-layer cofferdam for hydraulic engineering construction.

Background

The cofferdam is a temporary enclosure structure constructed for constructing permanent water conservancy facilities in the water conservancy project construction. The cofferdam has the functions of preventing water and soil from entering the building position of the building so as to drain water in the cofferdam, excavate a foundation pit and build the building. The cofferdam is mainly used in hydraulic buildings in general, and the cofferdam is dismantled after being used up except for being used as a part of a formal building. The cofferdam height is higher than the highest water level that may occur during construction. In the bridge foundation construction, when bridge piers and platform foundations are positioned below the ground surface water level, earth weirs in various forms are built according to local materials; in rivers with deep water and large flow velocity, sheet-pile or steel-sheet pile (single-layer or double-layer) cofferdams and many double-layer thin-wall steel cofferdams can be adopted. The cofferdam can be used for preventing water and enclosing water and can also be used for supporting the pit wall of the foundation pit. Cofferdam, pile into the terrace-shaped soil dyke of cross section with the soil, the side slope of the upstream face should not be steeper than 1:2 (vertical to horizontal ratio, same below), the side slope of the foundation ditch should not be steeper than 1:1.5, usually fill with the sandy clay. The earth cofferdam is only suitable for shallow water, slow flow rate and the place where the bottom of the cofferdam is a waterproof soil layer. In order to prevent the side slope of the upstream face from being washed away, the enclosure is filled with rubble, turf or grass bags. The rockfill cofferdam can be used in rocky areas, but the outer slope is covered by soil layers to prevent water leakage.

For example, patent No. CN105951855B discloses a double-layer composite truss reinforced steel cofferdam, which comprises a steel cofferdam body, wherein the inner side of the steel cofferdam body is connected with a double-layer truss structure, a steel pipe pile is arranged in the double-layer truss structure, and the double-layer truss structure is connected with the steel pipe pile through a connecting steel pipe. The construction method comprises the following steps: (1) assembling a steel cofferdam body, and installing the front of the steel cofferdam body on the upstream face; (2) inserting and driving a steel pipe pile in advance in the drilled pile constructed in the steel cofferdam body; (3) a double-layer truss structure is arranged in the steel cofferdam body; (4) pouring water into the steel cofferdam body to sink; (5) and welding the double-layer truss structure and the steel pipe pile together by using a connecting steel pipe. The invention has simple structure, quick installation, high structural strength and stability, and can completely meet the requirement of water closing.

The in-process that current cofferdam was used, the effect of making an uproar falls in giving sound insulation is relatively poor, and the noisy noise propagation distance that sends during the construction is far away, disturbs nearby resident's daily life easily to the anticollision effect of current cofferdam is relatively poor, and because of there being the great floater of some volumes in the river often, the floater can strike on the cofferdam under the impact of rivers, brings the damage for the cofferdam, reduces the firm degree of cofferdam.

Disclosure of Invention

The invention aims to provide a double-layer cofferdam for hydraulic engineering construction, and aims to solve the problems that the existing cofferdam in the background technology has poor sound insulation and noise reduction effects, generates long noise propagation distance during construction, and is easy to interfere with living of nearby residents in the using process.

In order to achieve the purpose, the invention provides the following technical scheme: a double-layer cofferdam for hydraulic engineering construction comprises a main cofferdam, wherein the main cofferdam is in a square structure, and the bottom of the main cofferdam is provided with a bottom plate; the top of the bottom plate is provided with an auxiliary cofferdam; the four outer walls of the main cofferdam are all provided with an outer groove, and a group of sliding strips are arranged in each outer groove through springs; the four groups of sliding strips are of rectangular structures; a first filter plate is arranged between the inner wall of the main cofferdam and the outer wall of the auxiliary cofferdam, and a plurality of filter holes are uniformly arranged at the top of the first filter plate; a weir is sleeved on the main cofferdam in a sliding manner and is in a square structure; and the bottoms of the four outer walls of the main cofferdam are provided with an outer plate.

Preferably, the main cofferdam comprises sliding chutes and sliding plates, two groups of sliding chutes are formed in the inner side of the main cofferdam, one sliding plate is slidably mounted in each group of sliding chutes, and a group of springs are arranged between the bottom of each sliding plate and the top of the bottom plate.

Preferably, the bottom plate comprises fixed inserting columns, a top groove is formed in the middle of the top of the bottom plate, and a group of fixed inserting columns are arranged at the bottom of the bottom plate; and one group of the fixed inserting columns are in a conical structure.

Preferably, the auxiliary cofferdam comprises inner plates and bumps, the inner plates are arranged on the inner walls of the four sides of the auxiliary cofferdam, and a group of bumps are arranged on the inner side of each inner plate; the four groups of the bumps are of a trapezoidal structure.

Preferably, the slide bars comprise connecting plates and blocking frames, the outer ends of eight slide bars are respectively rotatably provided with one connecting plate, and the other end of each group of connecting plates is connected with one blocking frame through a bearing; the four blocking frames are of arc-shaped structures.

Preferably, the first filter plate comprises support columns and a second filter plate, four support columns are arranged at the bottom of the first filter plate, and one second filter plate is arranged at the bottom ends of the four support columns; and the top of the second filter plate is provided with a plurality of filter grooves.

Preferably, the weir comprises side plates and floating plates, two side plates are arranged on the outer walls of four sides of the weir, and one floating plate is arranged at the outer end of each side plate; the eight floating plates are of circular structures.

Preferably, the outer plate comprises a flow groove, the outer sides of the outer plates at four positions are of arc structures, and a group of flow grooves are formed in the outer sides of the outer plates at four positions.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the inner part of the auxiliary cofferdam is uneven through the four groups of convex blocks, so that the physical diffuse reflection principle is realized by utilizing the unevenness of the four groups of convex blocks, a better sound insulation and noise reduction effect is achieved, and the influence on living of nearby residents due to far sound transmission caused by overlarge noise generated in the construction process is effectively prevented.

2. The invention is provided with the baffle frame, when the driftage with larger volume in the river impacts the baffle frame, the baffle frame pushes the two connecting plates inwards to expand the connecting plates towards the upper end and the lower end of the outer groove respectively, so that the two sliding strips extrude the spring to play a role in buffering and reducing pressure, the driftage is prevented from directly impacting the main cofferdam to cause slight damage to the main cofferdam, and the firmness degree of the main cofferdam is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a half-section structure of the main cofferdam of the present invention;

FIG. 3 is a schematic diagram of a half-section structure of the auxiliary cofferdam of the present invention;

FIG. 4 is a schematic view of a half-section structure of the retainer frame according to the present invention;

FIG. 5 is a schematic view of a first filter plate and a support pillar according to the present invention;

FIG. 6 is a schematic view of the structure of the dam and the floating plate according to the present invention;

FIG. 7 is a schematic view of a half-section structure of an outer panel according to the present invention;

in the figure: 1. a main cofferdam; 101. a chute; 102. a slide plate; 2. a base plate; 201. fixing the inserted columns; 3. an auxiliary cofferdam; 301. an inner plate; 302. a bump; 4. a slide bar; 401. connecting plates; 402. a blocking frame; 5. a first filter plate; 501. a support pillar; 502. a second filter plate; 6. a weir is blocked; 601. a side plate; 602. a floating plate; 7. an outer plate; 701. a launder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 7, an embodiment of the present invention includes: a double-layer cofferdam for hydraulic engineering construction comprises a main cofferdam 1, wherein the main cofferdam 1 is in a square structure, and the bottom of the main cofferdam 1 is provided with a bottom plate 2; the bottom plate 2 comprises fixed inserting columns 201, a top groove is formed in the middle of the top of the bottom plate 2, and a group of fixed inserting columns 201 are arranged at the bottom of the bottom plate 2; the group of fixed inserting columns 201 are of a conical structure, and the cofferdam can be more stably fixed in the riverbed by inserting the group of fixed inserting columns 201 into the riverbed, so that the cofferdam is better prevented from being impacted by water flow; the top of the bottom plate 2 is provided with an auxiliary cofferdam 3; the four outer walls of the main cofferdam 1 are all provided with an outer groove, and a group of sliding strips 4 are arranged in each outer groove through springs; the slide bars 4 comprise connecting plates 401 and baffle frames 402, the outer ends of the eight slide bars 4 are respectively provided with one connecting plate 401 in a rotating way, and the other end of each group of connecting plates 401 is connected with one baffle frame 402 through a bearing; the four blocking frames 402 are of arc structures, when large-volume driftage objects in a river impact the blocking frames 402, the blocking frames 402 push the two connecting plates 401 inwards to enable the connecting plates to expand and support the two sliding strips 4 towards the upper end and the lower end of the outer groove respectively, so that the two sliding strips 4 extrude springs to play a role in buffering and pressure reduction, the driftage objects are prevented from directly impacting the main cofferdam 1, slight damage is caused to the main cofferdam 1, and the firmness degree of the main cofferdam 1 is reduced; the four groups of sliding strips 4 are of rectangular structures; a first filter plate 5 is arranged between the inner wall of the main cofferdam 1 and the outer wall of the auxiliary cofferdam 3, and a plurality of filter holes are uniformly arranged at the top of the first filter plate 5; a weir 6 is sleeved on the main cofferdam 1 in a sliding way, and the weir 6 is in a square structure; the bottom of the four outer walls of the main cofferdam 1 is provided with an outer plate 7.

Further, main cofferdam 1 includes spout 101 and slide 102, two sets of spouts 101 have been seted up to the inboard of main cofferdam 1, and slidable mounting has a slide 102 in two sets of spouts 101, and be provided with a set of spring between the bottom of slide 102 and the top of bottom plate 2, when filling silt to the gap between main cofferdam 1 and the vice cofferdam 3, pound the top that falls at slide 102 through silt, make its extrusion spring, play the effect of buffering, prevent that the impact force when filling silt is too big, lead to bottom plate 2 to be damaged by the impact force of silt.

Further, the auxiliary cofferdam 3 comprises an inner plate 301 and bumps 302, the inner walls of four sides of the auxiliary cofferdam 3 are all provided with one inner plate 301, and the inner side of each inner plate 301 is provided with a group of bumps 302; the four groups of convex blocks 302 are in a trapezoidal structure, and the inside of the auxiliary cofferdam 3 is uneven through the four groups of convex blocks 302, so that the physical diffuse reflection principle is realized by utilizing the unevenness of the four groups of convex blocks 302, and a good sound insulation and noise reduction effect is realized.

Further, the first filter plate 5 comprises support columns 501 and a second filter plate 502, four support columns 501 are arranged at the bottom of the first filter plate 5, and one second filter plate 502 is arranged at the bottom end of each support column 501; a plurality of filter tanks have been seted up at the top of second filter plate 502, when filling silt to the gap between main cofferdam 1 and the vice cofferdam 3, can filter big caking in the silt through first filter plate 5, and filter great caking in the silt through second filter plate 502, thereby make fine and smooth silt lay in the bottom, great silt caking is laid in the middle level, too big silt caking is laid in the top layer, and then make silt more compact with the gap filling between main cofferdam 1 and the vice cofferdam 3.

Further, the weir 6 comprises side plates 601 and floating plates 602, two side plates 601 are arranged on the four outer walls of the weir 6, and one floating plate 602 is arranged at the outer end of each side plate 601; eight floating plates 602 are circular structures, drive the water level that keeps off the weir 6 and follow in the river course through eight floating plates 602 and rise, keep out rivers to prevent that the water level in the river course from increasing, lead to rivers to overflow main cofferdam 1.

Further, planking 7 includes chute 701, and the outside of four places planking 7 is the arc structure, and a set of chute 701 has all been seted up in the outside of four places planking 7, utilizes the arc structure of two places planking 7 and two sets of chute 701 cooperations to reduce the impact force of undercurrent in the river course, prevents that the impact force because of the undercurrent is too big, leads to the phenomenon that the cofferdam slightly removed to appear.

The working principle is as follows: when large-volume drift objects in a river collide with the blocking frame 402, the blocking frame 402 firstly pushes the two connecting plates 401 inwards to enable the connecting plates to expand the two sliding strips 4 towards the upper end and the lower end of the outer groove respectively, so that the two sliding strips 4 extrude springs to play a role in buffering and pressure reduction, the drift objects are prevented from directly colliding with the main cofferdam 1, slight damage is caused to the main cofferdam 1, the firmness degree of the main cofferdam 1 is reduced, the impact force of the underflow in the river can be reduced by utilizing the arc-shaped structures of the two outer plates 7 and the two groups of flow grooves 701 to match, the phenomenon that the cofferdam slightly moves due to overlarge impact force of the underflow is prevented, and when the water level in the river increases, the blocking weir 6 is driven to rise along with the water level through the eight floating plates 602 to block the water flow, so that the water flow is prevented from overflowing the main cofferdam 1 due to the increase of the water level in the river.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.