CN113550294A - A steel reinforcement cage drainage and seepage pipe for reducing infiltration line in side slope body fast - Google Patents
A steel reinforcement cage drainage and seepage pipe for reducing infiltration line in side slope body fast Download PDFInfo
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- CN113550294A CN113550294A CN202110843218.3A CN202110843218A CN113550294A CN 113550294 A CN113550294 A CN 113550294A CN 202110843218 A CN202110843218 A CN 202110843218A CN 113550294 A CN113550294 A CN 113550294A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- General Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a reinforcement cage seepage drainage pipe for quickly reducing a seepage line in a side slope, which is formed by combining geotextile (2) wrapped outside a reinforcement cage pipe, wherein the reinforcement cage pipe is of an integrated structure formed by combining 4 equal-length longitudinal support reinforcements (3), 2 longitudinal reinforcing ribs (4), transverse support disc circles (5) arranged at equal intervals and transverse reinforcing ribs (1) arranged at equal intervals; 4 longitudinal support steel bars (3) with equal length are respectively welded on the inner sides of the transverse support disc circles (5) arranged at equal intervals in an upper, lower, left and right mode to form a steel bar cage pipe. The drainage pipe can well realize the drainage and precipitation functions in the side slope, effectively reduces the saturation line in the side slope, reduces the number of drilled holes, optimizes the side slope treatment scheme, saves the investment cost, has the characteristics of simple and convenient construction, high reliability and strong water permeability, is not easy to block in the side slope, has high reliability and long service cycle, and can well meet the drainage requirements of the side slope.
Description
Technical Field
The invention belongs to the technical field of drainage of slope bodies, and particularly relates to a drainage pipe for reducing a saturation line in a slope body, which is suitable for drainage of different rock mass/soil body slopes and is also suitable for drainage of soil slope with low permeability coefficient and poor water permeability, so that the rapid reduction of the saturation line in the slope body is realized, and the safety and stability of the slope body are ensured.
Background
The factors influencing the slope stability have two aspects of internal factors and external factors. The internal factors comprise the physical and mechanical properties, internal structure, structural plane, ground stress and the like of the rock-soil mass forming the side slope, and the factors often play an important control role; the extrinsic factor is mainly the action of water, i.e. mainly of two types: surface water and groundwater. Surface and ground water are the most important and active extrinsic factors affecting slope stability.
The influence of soil body internal water seepage flow on the slope stability, especially to soil property side slope, mainly shows: water in the slope body forms pore water pressure through pores in the soil body in the side slope, and the water pressure exists in the slope body and generates static and dynamic water pressure on the slope body. On one hand, the static water pressure reduces the effective gravity of the rock-soil body and softens the soil body, and from the mechanical angle, the static water pressure reduces the effective stress of the rock-soil body, thereby reducing the cohesive force and the internal friction angle of the slope body; the dynamic pressure increases the gliding force of the slope body through the osmosis between soil body particles, and the slope stability is reduced due to the existence of the two factors. Therefore, the underground water existing in the side slope body has important influence on the stability of the side slope, and how to quickly discharge the underground water in the side slope body has important significance for enhancing the stability of the side slope.
At present, side slope drainage is mainly completed by pre-forming holes and then implanting drainage pipes into the pre-formed holes. Slope drainage measure mainly adopts the HDPE plastic tubing, at the pipe wall trompil, overcoat geotechnological cloth parcel, nevertheless discovers in a large amount of practical application that current plastics drain pipe arranges the infiltration effect in the soil body side slope not good enough, mainly has following problem:
(1) because of the structural influence of the drain pipe, the opening is small and easy to block, the drainage and seepage effects of the drainage and seepage pipe are limited in the vertical and horizontal water permeability, the drainage and seepage effect is reduced, and the drainage and seepage pipe is easy to lose efficacy for a long time;
(2) because of the rigidity problem of the material, the pipe wall opening quantity is limited, the upper half wall of the pipe can be perforated, the water permeability is not good enough, in order to achieve the drainage effect, the distance between the drainage pipes needs to be encrypted, and the cost is increased.
(3) Practice tests show that the plastic drain pipe has low water permeability, is easy to block, and the water in the slope body cannot be drained in time, so that the soil body is soaked in the water for a long time, the soil body is softened, the strength is reduced, the safety and the stability of the slope are obviously reduced, extra reinforcing and treating measures are required, and the investment cost is increased.
In order to improve the drainage and seepage effect of the side slope, the chinese utility model patent 201721526701.4 introduces a drainage and seepage pipe and drainage and seepage system, and the drainage and seepage pipe includes: the pipe comprises a pipe body and a sand net, wherein the sand net is sleeved outside the pipe body, a water seepage seam is formed in the top of the pipe body, and the sand net is an anti-corrosion sand net. This arrange and ooze the pipe and set up the infiltration seam at the top and can prevent that water from getting into the body from the bottom, anticorrosive sand net can increase the life of arranging and oozing the pipe. However, the drainage efficiency of the drainage pipe is not fundamentally improved compared with the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the existing drainage mode of the plastic drainage pipe in the side slope body, and provides the reinforcement cage drainage pipe which has high water permeability, good drainage effect, difficult clogging, simple and convenient field construction and low construction cost and is used for quickly reducing the infiltration line in the side slope body.
In order to realize the purpose, the reinforcement cage drainage and seepage pipe for quickly reducing the infiltration line in the side slope adopts the following technical scheme:
the invention relates to a reinforcement cage drainage pipe for quickly reducing infiltration lines in a side slope, which is formed by wrapping geotextile outside a reinforcement cage pipe, wherein the geotextile plays a role in reverse filtration and drainage and prevents soil from entering the pipe. The reinforcement cage pipe is an integrated structure formed by combining 4 longitudinal supporting reinforcements with equal length, 2 longitudinal reinforcing ribs, transverse supporting coils arranged at equal intervals and transverse reinforcing ribs arranged at equal intervals; 4 longitudinal support steel bars with equal length are respectively welded on the inner sides of the transverse support disc circles which are arranged at equal intervals in an upper, lower, left and right way; 2 longitudinal reinforcing ribs are equal to the longitudinal supporting steel bars in length and are symmetrically welded on two inner sides of the middle upper part of the transverse supporting disk in equal-interval arrangement; the transverse reinforcing rib is a cross-shaped reinforcing steel bar frame, and four ends of the transverse reinforcing rib are respectively welded with 4 longitudinal supporting steel bars of the steel bar cage pipe to form an integral structure; the longitudinal and transverse supports jointly form a steel skeleton of the infiltration discharge pipe, and the longitudinal reinforcing rib and the transverse reinforcing rib are jointly used, so that the overall rigidity of the reinforcement cage pipe is greatly enhanced.
In order to realize that the infiltration line in the slope body can be effectively reduced, the overall strength of the infiltration line in the slope body can be effectively reduced, and meanwhile, the production cost and the construction convenience are considered, through repeated tests, comparison and calculation, the technical parameters of the reinforcement cage drainage pipe for quickly reducing the infiltration line in the slope body are determined as follows: the inner diameter of the transverse supporting disk is 90-150 mm, the distance between adjacent transverse supporting disk is 130-180 mm, and the distance between adjacent transverse reinforcing ribs is 1.6-2.5 m; the further optimized technical parameters are as follows: the number of the longitudinal supporting steel bars is phi 22-26 mm, the number of the longitudinal reinforcing ribs is phi 16-20 mm, the diameter of the cross section of the transverse supporting disk is phi 8-12 mm, and the number of the transverse reinforcing ribs is phi 22-26 mm; the geotechnical cloth has the specification of 200 g/square meter, 250 g/square meter and 300 g/square meter, and has the functions of reverse filtration and seepage drainage to prevent soil from entering the pipe.
Compared with the traditional drainage mode of the plastic drainage pipe in the side slope body, the reinforcement cage drainage pipe for quickly reducing the infiltration line in the side slope body has the following positive effects after adopting the technical scheme:
(1) the invention is a full-tubular drainage and seepage, the whole body is a water permeable body, the pipe wall does not need to be opened, the effective drainage and seepage area is more than 5 times of the total area of the openings of the pipe wall of the existing drainage and seepage pipe, the invention has the characteristics of strong water permeability and the like, greatly enhances the drainage effect of the slope body, can quickly reduce the infiltration line in the slope body, and has extremely remarkable effect.
(2) The invention mainly adopts the reinforcing steel bars and the geotextiles with different diameters and different types to carry out combined drainage, has simple and convenient field construction, is not easy to cause silting in the application process, obviously reduces the number of the holes on the side slope, reduces the drilling cost, optimizes the side slope treatment scheme and saves the investment under the condition of the same drainage capacity.
Drawings
FIG. 1 is a longitudinal sectional view of a reinforcement cage drainage pipe structure for rapidly reducing a saturation line in a slope according to the present invention;
FIG. 2 is a cross-sectional view of a reinforcement cage drainage pipe structure for rapidly reducing a saturation line in a slope according to the present invention;
FIG. 3 is a schematic view of the construction of a lateral support disk used in the present invention;
fig. 4 is a schematic view of the construction of a transverse stiffener-cross bar according to the present invention;
the reference signs are: 1-transverse reinforcing rib-cross reinforcing frame; 2-geotextile; 3-longitudinal supporting steel bars; 4-longitudinal reinforcing ribs; 5-transverse supporting disk
Detailed Description
For better describing the invention, the reinforcement cage drainage pipe for rapidly reducing the infiltration line in the slope body is further described in detail with reference to the attached drawings.
The longitudinal section view of the reinforcement cage drainage pipe structure for quickly reducing the saturation line in the side slope is shown in figure 1 and is combined with figures 2, 3 and 4, and the reinforcement cage drainage pipe for quickly reducing the saturation line in the side slope is formed by combining geotextile 2 outside the reinforcement cage pipe, plays a role in reverse filtration and drainage and prevents soil from entering the pipe. The reinforcement cage pipe comprises 4 longitudinal supporting reinforcements 3 with equal length, 2 longitudinal reinforcing ribs 4, transverse supporting coils 5 arranged at equal intervals, and transverse reinforcing ribs 1 arranged at equal intervals, wherein the 4 longitudinal supporting reinforcements 3 with equal length are respectively welded on the inner sides of the transverse supporting coils 5 arranged at equal intervals in an upper, lower, left and right mode to form the reinforcement cage pipe; the 2 longitudinal reinforcing ribs 4 are equal in length to the longitudinal supporting steel bars 3 and are symmetrically welded on two inner sides of the middle upper part of the transverse supporting disk 5 which are arranged at equal intervals; the transverse reinforcing rib 1 is a cross reinforcing frame, and four ends of the transverse reinforcing rib 1 are respectively welded with 4 longitudinal supporting steel bars 3 of the steel bar cage pipe to form an integral structure. The whole framework of the drainage pipe is formed by the longitudinal support and the transverse support, and bears the soil pressure of the surrounding soil body.
The length of the drainage pipe of the reinforcement cage can be freely adjusted; the invention can also adopt a mode of strengthening the longitudinal support, namely, the invention also comprises another two longitudinal reinforcing ribs 4, wherein the other two longitudinal reinforcing ribs 4 are also as long as the longitudinal supporting reinforcing steel bars 3 and are symmetrically welded on two inner sides of the middle lower part of the transverse supporting disk 5 which are arranged at equal intervals.
In practical use, the inner diameter of the transverse supporting disk 5 is 90 mm-150 mm, the distance between adjacent transverse supporting disk 5 is 150mm, and the distance between adjacent transverse reinforcing ribs 1 is 2.0 m. The longitudinal support steel bars 3 are made of deformed steel bars with the model phi 24mm, the longitudinal reinforcing ribs 4 are made of deformed steel bars with the model phi 18mm, the cross section diameter of the transverse support disk circle 5 is phi 10mm, and each transverse reinforcing rib 1 is made of two deformed steel bars with the model phi 24mm and the model phi 24mm to form a cross-shaped reinforcing frame; the specification of the geotextile 2 is one of 200 grams per square meter, 250 grams per square meter and 300 grams per square meter according to the actual engineering and the drainage requirements.
Practical application verification of the reinforcement cage drainage and seepage pipe for quickly reducing the infiltration lines in the side slope body shows that the novel drainage and seepage pipe can quickly and obviously reduce the infiltration lines in the side slope body; under the condition of the same drainage capacity, the number of drilled holes is greatly reduced. After the invention is practically applied in engineering, the soil strength can be obviously improved, the slope treatment scheme is optimized, and the investment is saved. Meanwhile, because of the characteristics of convenient construction and strong water permeability, the water-permeable side slope can not be silted up in the side slope body, has high reliability and long service cycle, and can be more and more widely applied to different (rock) soil bodies, particularly to the drainage of silty clay, silty clay and the like with poor water permeability.
The contrast test research of engineering application shows that under the condition of same pipe (hole) net density and same pipe (hole) inner diameter, the geotextile with the same specification is used for wrapping, and compared with a pipe wall perforated and geotextile HDPE plastic pipe wrapped outside, the reinforcement cage seepage drainage pipe has the advantages that the seepage drainage efficiency is improved by more than 5 times under the condition of reducing the pipe wall to a safe seepage line in a side slope, and unexpected technical effects are achieved.
Claims (4)
1. The utility model provides a steel reinforcement cage drainage and seepage pipe for reducing infiltration line in side slope body fast which characterized in that: the steel reinforcement cage pipe is formed by wrapping geotextile (2) outside a steel reinforcement cage pipe, and the steel reinforcement cage pipe is formed into an integrated structure by combining 4 longitudinal supporting steel bars (3) with equal length, 2 longitudinal reinforcing ribs (4), transverse supporting disk circles (5) arranged at equal intervals and transverse reinforcing ribs (1) arranged at equal intervals; 4 longitudinal support steel bars (3) with equal length are respectively welded on the inner sides of the transverse support disc circles (5) which are arranged at equal intervals in an upper, lower, left and right way; the 2 longitudinal reinforcing ribs (4) are equal in length to the longitudinal supporting steel bars (3) and are symmetrically welded on two inner sides of the middle upper part of the transverse supporting disk (5) which are arranged at equal intervals; the transverse reinforcing rib (1) is a cross reinforcing frame, and four ends of the transverse reinforcing rib (1) are respectively welded with 4 longitudinal supporting reinforcing steel bars (3) of the steel reinforcement cage pipe to form an integral structure.
2. The reinforcement cage drainage pipe for rapidly reducing the infiltration line in the slope body as claimed in claim 1, wherein: the steel wire rope further comprises another two longitudinal reinforcing ribs (4), wherein the other two longitudinal reinforcing ribs (4) are also as long as the longitudinal supporting steel bars (3) and are symmetrically welded on two inner sides of the middle lower part of the transverse supporting disk (5) which are arranged at equal intervals.
3. A reinforcement cage infiltration discharge pipe for rapidly reducing infiltration lines in slopes according to claim 1 or 2, which comprises: the inner diameter of the transverse supporting disk (5) is 90-150 mm, the distance between adjacent transverse supporting disk (5) is 130-180 mm, and the distance between adjacent transverse reinforcing ribs (1) is 1.6-2.5 m.
4. A reinforcement cage drainage pipe for rapidly reducing the saturation line in a slope as claimed in claim 3, wherein: the number of the longitudinal supporting steel bars (3) is phi 22-26 mm, the number of the longitudinal reinforcing ribs (4) is phi 16-20 mm, the diameter of the cross section of the transverse supporting disk circle (5) is phi 8-12 mm, and the number of the transverse reinforcing ribs (1) is phi 22-26 mm; the specification of the geotextile (2) is 200 g/square meter, 250 g/square meter or 300 g/square meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110843218.3A CN113550294A (en) | 2021-07-26 | 2021-07-26 | A steel reinforcement cage drainage and seepage pipe for reducing infiltration line in side slope body fast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110843218.3A CN113550294A (en) | 2021-07-26 | 2021-07-26 | A steel reinforcement cage drainage and seepage pipe for reducing infiltration line in side slope body fast |
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| Publication Number | Publication Date |
|---|---|
| CN113550294A true CN113550294A (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110843218.3A Pending CN113550294A (en) | 2021-07-26 | 2021-07-26 | A steel reinforcement cage drainage and seepage pipe for reducing infiltration line in side slope body fast |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100491784B1 (en) * | 2004-03-10 | 2005-05-30 | 지호열 | Dehydration Construction Method for softclay using Diains Surrounded Ionized geotextile filter |
| WO2010060163A1 (en) * | 2008-11-26 | 2010-06-03 | Sandro Salvador Sandroni | Disposition introduced in a circular vertical drain or in regular polygonal vertical drain |
| CN206090598U (en) * | 2016-10-21 | 2017-04-12 | 西京学院 | Vertical system of oozing of jointly arranging of tailing fill dam level |
| CN108914879A (en) * | 2018-07-19 | 2018-11-30 | 兰州有色冶金设计研究院有限公司 | A kind of frame-type row infiltration system and method |
| CN213014336U (en) * | 2020-07-07 | 2021-04-20 | 中电建十一局工程有限公司 | A double-deck steel reinforcement cage filters sump pit for foundation ditch falls drainage |
| CN216045898U (en) * | 2021-07-26 | 2022-03-15 | 中钢集团马鞍山矿山研究总院股份有限公司 | Drain pipe capable of effectively reducing infiltration line in slope body |
-
2021
- 2021-07-26 CN CN202110843218.3A patent/CN113550294A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100491784B1 (en) * | 2004-03-10 | 2005-05-30 | 지호열 | Dehydration Construction Method for softclay using Diains Surrounded Ionized geotextile filter |
| WO2010060163A1 (en) * | 2008-11-26 | 2010-06-03 | Sandro Salvador Sandroni | Disposition introduced in a circular vertical drain or in regular polygonal vertical drain |
| CN206090598U (en) * | 2016-10-21 | 2017-04-12 | 西京学院 | Vertical system of oozing of jointly arranging of tailing fill dam level |
| CN108914879A (en) * | 2018-07-19 | 2018-11-30 | 兰州有色冶金设计研究院有限公司 | A kind of frame-type row infiltration system and method |
| CN213014336U (en) * | 2020-07-07 | 2021-04-20 | 中电建十一局工程有限公司 | A double-deck steel reinforcement cage filters sump pit for foundation ditch falls drainage |
| CN216045898U (en) * | 2021-07-26 | 2022-03-15 | 中钢集团马鞍山矿山研究总院股份有限公司 | Drain pipe capable of effectively reducing infiltration line in slope body |
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Application publication date: 20211026 |