CN-121976599-A - Rain sewage square culvert tail end blocking stop block and construction method

CN121976599ACN 121976599 ACN121976599 ACN 121976599ACN-121976599-A

Abstract

The invention relates to the technical field of rain sewage pipe culvert construction, in particular to a rain sewage square culvert tail end blocking block and a construction method, wherein the rain sewage square culvert tail end blocking block comprises a blocking block, the side end face of the blocking block is of a right trapezoid structure with a narrow upper part and a wide lower part, the upstream face of the blocking block is a vertical face, and the downstream face is an inclined face; two sides of the bottom of the plugging block are respectively provided with an axillary angle II which is matched with the axillary angle I at the bottom of the square culvert, and the top of the plugging block is provided with a hanging ring. The invention adopts a gravity type trapezoid structure with narrow upper part and wide lower part, has strong anti-floating and anti-capsizing capabilities, can resist the impact of high-flow and high-flow-rate water flow, and the stop block is a prefabricated part, and is only required to be hoisted in place on site, so that the risk of underwater operation is avoided, the plugging construction time is greatly shortened, and the subsequent construction working face can be rapidly provided.

Inventors

CHENG PENG
GUO HUIWEN
XIA LI
GUO CHENGHUA
Feng Fakang
ZHANG LINCONG

Assignees

中国二十二冶集团有限公司

Dates

Publication Date: 20260505
Application Date: 20260331

Claims (7)

1. The end blocking block for the square culvert of the rain sewage is characterized by comprising a blocking block, wherein the side end face of the blocking block is of a right trapezoid structure with the upper part narrow and the lower part wide, the upstream face of the blocking block is a vertical face, the downstream face of the blocking block is an inclined face, two sides of the bottom of the blocking block are respectively provided with an axillary angle II which is matched with an axillary angle I of the bottom of the square culvert, and the top of the blocking block is provided with a hanging ring.
2. The block for plugging the ends of a culvert in rainy sewage according to claim 1, wherein grooves are respectively formed on two sides and the bottom of the block, and water-swelling materials are filled in the grooves.
3. The block for plugging a terminal of a culvert in rainy sewage according to claim 2, wherein the groove comprises a first groove positioned above an axillary corner and a second groove positioned below the axillary corner and plugging block, and the width of the first groove is larger than that of the second groove.
4. The block for plugging a terminal of a culvert in rainy sewage according to claim 3, wherein the first groove is filled with the water-swellable material and the square timber at the same time, and the second groove is filled with the water-swellable material.
5. The block for plugging the end of a culvert in rainy sewage according to claim 1, wherein the length of the top end of the block is more than or equal to 0.5mm, the width is less than 0.05m-0.07m of the clear width of the culvert, and the height is Yu Fanghan m higher than the top at least 0.3m.
6. The block for plugging the ends of a culvert in rainy sewage according to claim 1, wherein the slope of the block is 1:0.3.
7. A construction method for a block for blocking the tail end of a square culvert in rain sewage, which is characterized by being applicable to the block for blocking the tail end of the square culvert in rain sewage according to any one of claims 1 to 6, and comprises the following specific steps: S1, determining the size of a plugging block according to the water flow and the size of a rain sewage square culvert; s2, supporting the bottom die according to the size of the plugging stop block; s3, binding the reinforcing steel bars, namely designing related reinforcing steel bars according to the size of the plugging block, binding the plugging block reinforcing steel bars on the paved bottom die, wherein the inclined plane of the plugging block is upward and the vertical plane is downward when the reinforcing steel bars are bound; S4, embedding a hanging ring; s5, supporting a mold; S6, pouring concrete; S7, after the plugging block is prefabricated, water-swelling water-stopping materials are arranged in the first groove and the second groove and fixed by cement nails; S8, installing the plugging block, namely after the plugging block is hoisted to a proper position, inserting square timber into the first groove for plugging a gap between the square culvert wall body and the plugging block, and then arranging a pressing plate on the top of the square timber, and fixing the pressing plate and the plugging block, thereby completing the installation.

Description

Rain sewage square culvert tail end blocking stop block and construction method Technical Field The invention relates to the technical field of rain sewage pipe culvert construction, in particular to a rain sewage square culvert end blocking stop block and a construction method. Background During municipal engineering construction, particularly in the construction process of underground utility tunnel and external sewage pipeline engineering of old urban areas, the end blocking of a rain sewage pipeline (square culvert) is the most commonly encountered problem. Because the original pipeline is not plugged in place, leakage accidents occur in the later foundation pit excavation and structure construction process. Meanwhile, sewage leakage or sudden surge can bring huge damage to urban environment, and seriously affect normal life of urban residents. The existing sewage pipeline plugging is smoothly realized by adopting methods such as manual underwater plugging, grouting and slice stone silk cage matched with concrete pouring plugging, and the like, and the existing sewage pipeline plugging is realized by adopting methods such as air bag plugging for pipelines with smaller pipe diameters or smaller sewage flow. To the shutoff of rain sewage square culvert in municipal construction, because square culvert size and discharge, water velocity are great, lead to rivers to have great impact force. The manual underwater plugging effect is good, but the risk is particularly high, the safety is low, and the safety accident is very easy to cause. The grouting slice stone silk cage matched pouring concrete plugging method is suitable for plugging Fang Hanguan channels with smaller water flow, and has certain limitation because the water flow is large in the concrete pouring process and cannot be constructed. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a block for plugging the tail end of a rain sewage square culvert and a construction method, which are suitable for the rain sewage square culvert plugging construction with various sizes and various water flows, and have the advantages of high construction speed, good effect and high safety. The technical scheme adopted for solving the technical problems is as follows: The end blocking block for the square culvert of the rain sewage comprises a blocking block, wherein the side end face of the blocking block is of a right trapezoid structure with the upper part narrow and the lower part wide, the upstream face of the blocking block is a vertical face, the downstream face of the blocking block is an inclined face, two sides of the bottom of the blocking block are respectively provided with an axillary angle II which is matched with an axillary angle I of the bottom of the square culvert, and the top of the blocking block is provided with a hanging ring. Compared with the prior art, the invention has the beneficial effects that: The invention adopts a gravity type trapezoid structure with narrow upper part and wide lower part, has strong anti-floating and anti-capsizing capabilities, can resist the impact of high-flow and high-flow-rate water flow, and the stop block is a prefabricated part, and is only required to be hoisted in place on site, so that the risk of underwater operation is avoided, the plugging construction time is greatly shortened, and the subsequent construction working face can be rapidly provided. Preferably, the invention further adopts the technical scheme that: preferably, grooves are respectively formed on two sides and the bottom of the plugging block, and water-swellable materials are filled in the grooves. Preferably, the grooves comprise a first groove positioned above the axillary angle and a second groove positioned below the axillary angle and the plugging block, and the width of the first groove is larger than that of the second groove. Preferably, the first groove is filled with the water-swelling material and the square timber at the same time, and the second groove is filled with the water-swelling material. Preferably, the length of the top end of the plugging block is more than or equal to 0.5mm, the width is less than 0.05m-0.07m of the net width of the square culvert, and the height is at least 0.3m at the top of Yu Fanghan m. Preferably, the slope of the inclined surface of the plugging block is 1:0.3. The invention also relates to a construction method of the end plugging stop block of the rain sewage square culvert, which comprises the following specific steps: S1, determining the size of a plugging block according to the water flow and the size of a rain sewage square culvert; s2, supporting the bottom die according to the size of the plugging stop block; s3, binding the reinforcing steel bars, namely designing related reinforcing steel bars according to the size of the plugging block, binding the plugging block reinforcing steel bars on the paved bottom die, wherein the inclined plane of t