CN114164846B

CN114164846B - Permanent slope waterproof reinforcing construction method

Info

Publication number: CN114164846B
Application number: CN202111418408.7A
Authority: CN
Inventors: 方进波; 郑洪坚; 杨桂青; 秦前波; 郑俊杰; 张堪培; 王玥力; 张雷; 陈丽; 郭成满; 庄诗鸿; 谢盛; 汤顺洪
Original assignee: Guangdong Engineering Investigation Institute
Current assignee: Guangdong Engineering Investigation Institute
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-08-05
Anticipated expiration: 2041-11-26
Also published as: CN114164846A

Abstract

The application discloses permanent side slope waterproof reinforcement construction method, it is through having set gradually waterproofing membrane and drainage network at the side slope soil layer from deep soil layer to top soil layer, waterproofing membrane can prevent the rainwater infiltration, has effectively restricted waterproofing membrane below the rock soil body saturation that absorbs water, thereby reduce the possibility happy that the landslide takes place for the side slope soil body, and the water of richness in the side slope soil layer can permeate in the drainage network and discharge in the side slope through the drainage network, thereby make the side slope soil layer keep the water balance, further reduce the possibility that the landslide takes place for the side slope. The planting frames are laid on the surface layer of the side slope and shrubs are planted, so that the side slope has a soil fixing effect, and the possibility of side slope landslide is reduced.

Description

Permanent slope waterproof reinforcing construction method

Technical Field

The application relates to the technical field of slope protection, in particular to a permanent slope waterproof reinforcement construction method.

Background

Soil needs to be excavated in both road construction engineering and building construction engineering, so that a side slope with a certain inclined plane is easily formed. When the soil body is a water-rich soil body and under the conditions of heavy rain and continuous rainfall, rainwater seeps into the deep soil layer of the side slope, so that the landslide phenomenon is easy to occur, the loss which is difficult to recover due to important construction of roads, bridges, urban buildings and the like close to the side slope is caused, and the life and property safety of people is seriously threatened. Therefore, the slope needs to be waterproofed and reinforced.

The existing slope waterproof reinforcement method mainly comprises two methods, one method is to inject slurry into a slope soil layer to improve the stability of the slope soil layer, but the slope ecology can be damaged; the other type is to plant the vegetation on the side slope, but the survival rate of the vegetation is greatly influenced by weather and human factors, the rainwater cannot be prevented from infiltrating into a deep soil layer, and the reinforcing effect is often poor. Therefore, there is room for improvement.

Disclosure of Invention

In order to reinforce the side slope to reduce the possibility of landslide of the side slope, the application provides a permanent side slope waterproof reinforcing construction method.

The application provides a waterproof reinforcement construction method for a permanent side slope, which adopts the following technical scheme:

a waterproof and reinforcing construction method for a permanent slope comprises the following steps:

s1, excavating a surface soil body of the side slope to form a foundation pit;

s2, laying waterproof rolls at the bottom and the side wall of the foundation pit and fixing;

s3, establishing a drainage network: dividing grid lines on the waterproof coiled material to determine the embedding positions of the anchor rods, and then driving a plurality of anchor rods into the soil layer at the bottom of the foundation pit one by one according to the divided grid lines, wherein the anchor rods are arranged in a hollow manner; then, a drain pipe is arranged between two adjacent anchor rods positioned in the same column, a plurality of water inlet holes are hollowed in the peripheral wall of the drain pipe, first filter cloth is fixedly bonded to inner fold folds of the drain pipe, then a water outlet pipe is externally connected to one row of anchor rods positioned at the bottom end of the side slope, and the water outlet pipe extends out of the lower end of the side slope soil layer;

s4, backfilling a soil body to fill the foundation pit;

s5, leveling and compacting the surface soil body of the side slope;

s6, paving the plurality of planting frames on the surface of the slope, and planting shrubs in a planting area surrounded by the planting frames.

By adopting the technical scheme, the side slope soil layer is reinforced and the stability of the side slope soil layer is improved due to the existence of the planting frame, the anchor rod and the shrubs, so that the possibility of landslide of the side slope is reduced. When raining, partial rainwater flows down along the side slope, and partial rainwater permeates into the side slope soil layer and can be prevented from continuously infiltrating downwards by arranging the waterproof coiled material, so that the rock soil body below the waterproof coiled material can be effectively prevented from being saturated by water, and the aim of reducing the sliding force under the side slope is fulfilled. And surplus water in the side slope soil layer can permeate into the drainage pipe and is finally discharged from the water outlet pipe, so that water balance is kept in the side slope soil layer, and the possibility of landslide of the side slope soil layer is further reduced.

Preferably, the anchor rod is arranged in a hollow manner, a first branch pipe and a second branch pipe are communicated with the side wall of the anchor rod, and the height of the first branch pipe is higher than that of the second branch pipe; the two ends of the drain pipe are bent, a first joint is sleeved on one section of the drain pipe in a sliding mode and is in threaded connection with the first branch pipe, a second joint is sleeved on the other end of the drain pipe in a sliding mode and is in threaded connection with the second branch pipe; when the anchor rod is buried, the orientation of the first joint is adjusted to enable the first joint to face the upper end of the side slope.

Through adopting above-mentioned technical scheme, the setting of first branch pipe and second branch pipe is conveniently connected the drain pipe with the stock, and sets up first branch pipe and second branch pipe one high one low for the effect of the concrete turnover water of stock, thereby be favorable to the drainage.

Preferably, a first partition plate and a second partition plate are fixedly connected in sequence in the anchor rod from top to bottom, the anchor rod is sequentially divided into a water storage section, a water drainage section and an anchoring section from top to bottom by the first partition plate and the second partition plate, the first branch pipe and the second branch pipe are both arranged on the water drainage section, a plurality of water outlet holes are hollowed in the peripheral wall of the water storage section, and second filter cloth is arranged on the inner peripheral wall of the water storage section; after the planting frame is laid, an arc-shaped baffle plate is welded and fixed at the part of the water storage section, which is exposed out of the side slope, the arc-shaped baffle plate is positioned at one side of the water storage section, which faces the upper end of the side slope, and the central angle of the arc-shaped baffle plate is 180-270 degrees.

Through adopting above-mentioned technical scheme, when raining, the in-process that the slope along the side slope flows of rainwater on falling on the side slope, because cowl's existence, the rainwater can not get into in the retaining section. Rainwater permeating into the surface soil layer of the side slope can permeate into the water storage section, and when the rainfall is small, water stored in the water storage section is convenient for the subsequent growth of shrubs; when the rainfall is great, the water level in the water storage section can rise, and the rainwater can flow to the drainage channel from the water outlet hole on the upper portion, so that the drainage effect is achieved, the amount of rainwater permeating into the deep soil layer of the side slope is reduced, and the possibility of landslide of the side slope is favorably reduced. In the growth process of shrubs, when the weather is dry or the soil fertility is insufficient, water or prepared nutrient solution can be poured into the water storage section, so that the survival rate of the shrubs is improved.

Preferably, the outer wall of the anchoring section is fixedly sleeved with a sealing ring, and in the construction process of the anchor rod, when the sealing ring presses the waterproof coiled material to the bottom of the foundation pit, the anchor rod is stopped to be beaten, so that the construction of the anchor rod is completed.

Through adopting above-mentioned technical scheme, the setting up of sealing ring is favorable to improving the leakproofness of stock and waterproofing membrane junction on the one hand, and on the other hand is favorable to judging the anchor rod bury the degree of depth underground to ensure that the degree of depth that a plurality of anchor rods squeezed into the soil layer is unanimous basically, thereby makes things convenient for follow-up installation drain pipe.

Preferably, the planting frame is the rhombus setting, and every equal joint of planting frame is between four adjacent stock, the planting frame includes the framework, the periphery integrated into one piece of framework has solid fixed ring, gu one side of fixed ring flushes with one side of framework, the thickness of fixed frame is less than the thickness of framework, is located solid fixed ring on a plurality of planting frames and supports tightly each other and form a plurality of water drainage tank that are the rhombus setting and intercommunication.

Through adopting above-mentioned technical scheme, the side slope soil layer has not only been consolidated to the stock, still plays the positioning action to planting the frame to conveniently lay and plant the frame. The fixing ring forms a drainage groove, so that part of rainwater falling on the side slope can flow down from the side slope along the drainage groove, and the amount of rainwater permeating into a side slope soil layer is reduced.

Preferably, the arc-shaped notch is formed in the corner of the fixing ring, and the radius of the arc-shaped notch is equal to the outer diameter of the anchor rod.

Through adopting above-mentioned technical scheme, the existence of arc breach conveniently blocks the frame with planting and sists the person between four stock.

Preferably, the upper end of the anchor rod is in threaded connection with an end cover, and the projection of the end cover on the side slope and the frame body located on the four adjacent planting frames are partially overlapped.

Through adopting above-mentioned technical scheme, the stock is not only conveniently buried underground in the setting of end cover, and after planting the frame and laying on the side slope soil layer, usable end cover will plant the frame and support tightly on the side slope soil layer to plant the frame and play the fixed action, so that plant the frame and stably lay on the side slope soil layer.

Preferably, the two adjacent side walls at the lower end of the frame body are provided with drain holes communicated with the drain grooves, and after the planting frame is laid on a side slope soil layer, the water inlet of the drain holes is shielded by the broken stone blocks.

Through adopting above-mentioned technical scheme, when raining, fall to in planting the frame rainwater can follow the wash port and flow into the water drainage tank, further reduce the volume of rainwater infiltration soil layer to reduce the possibility that the side slope takes place the landslide. The broken stone blocks have a filtering effect on rainwater so as to reduce the loss of soil on the surface layer of the side slope.

Drawings

FIG. 1 is a schematic view of a drainage net of the present application installed on a slope;

FIG. 2 is a schematic view of the connection of the drain pipe to the anchor in the present application;

FIG. 3 is a schematic structural view of the planting frame laid on the side slope in the present application;

fig. 4 is a schematic structural diagram of a planting frame in the present application.

Description of reference numerals:

1. waterproof coiled materials; 2. an anchor rod; 21. a water storage section; 22. a drainage section; 23. an anchoring section; 3. a drain pipe; 4. a water outlet pipe; 5. an end cap; 6. a first separator; 7. a second separator; 8. a first branch pipe; 9. a second branch pipe; 10. a seal ring; 11. a first joint; 12. a second joint; 13. planting frames; 131. a frame body; 132. a fixing ring; 14. an arc-shaped notch; 15. a drain hole; 16. an arc baffle.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a permanent slope waterproof reinforcing construction method. The method comprises the following steps:

s1, excavating the surface soil body of the side slope to form a foundation pit, wherein the excavation depth is 1-2 m, and after the excavation is finished, the bottom and the side wall of the foundation pit are leveled.

And S2, paving the waterproof roll material 1 at the bottom and the side wall of the foundation pit and fixing the waterproof roll material 1 in the foundation pit by using waterproof anchoring nails. Waterproofing membrane 1 can effectively prevent rainwater infiltration to effectively restrict waterproofing membrane 1 below rock soil body saturation that absorbs water, and then reduce the possibility that the side slope soil body takes place the landslide.

And S3, establishing a drainage network. Referring to fig. 1, divide the grid line in order to confirm the buried position underground of stock 2 on waterproofing membrane 1, then squeeze into the foundation ditch bottom soil horizon with a plurality of stocks 2 one by one according to the grid line of division, install drain pipe 3 between two adjacent stocks 2 that lie in the same row after that, external outlet pipe 4 on one row of stock 2 that lie in the side slope bottom, outlet pipe 4 stretches out the lower extreme setting of side slope soil horizon. Specifically, the method comprises the following steps:

referring to fig. 1 and 2, the anchor rod 2 is hollow, and the lower end of the anchor rod 2 is tapered so that the anchor rod 2 can be drilled. The upper end of the screw is threadedly connected with an end cap 5 so as to strike the anchor rod 2.

Referring to fig. 2, a first partition plate 6 and a second partition plate 7 are fixedly connected to the inside of the anchor rod 2 from top to bottom in sequence, and the anchor rod 2 is divided into a water storage section 21, a water drainage section 22 and an anchoring section 23 from top to bottom in sequence by the first partition plate 6 and the second partition plate 7. Wherein, the peripheral wall of the water storage section 21 is hollowed with a plurality of water outlet holes. The peripheral wall of the drainage section 22 is communicated with a first branch pipe 8 and a second branch pipe 9, the axis of the first branch pipe 8 is parallel to the axis of the second branch pipe 9, and the height of the first branch pipe 8 is higher than that of the second branch pipe 9. The anchoring section 23 is sleeved with a sealing ring 10, the sealing ring 10 and the anchoring section 23 are welded and fixed, and the sealing ring 10 is arranged close to the second branch pipe 9.

Referring to fig. 1 and 2, before driving the anchor 2 into the ground, the first branch pipe 8 is oriented towards the upper end of the side slope, and the second branch pipe 9 is oriented towards the lower end of the side slope. Then, the anchor rod 2 is driven into the soil layer, after the waterproof coiled material 1 is tightly pressed at the bottom of the foundation pit by the sealing ring 10, the anchor rod 2 is stopped to be knocked, and embedding of the anchor rod 2 is completed. The sealing ring 10 is arranged, so that on one hand, the sealing performance of the penetrating joint of the anchor rod 2 and the asphalt coiled material is enhanced; on the other hand, the anchor rods 2 can be driven into the soil to a basically consistent depth so as to be convenient for installing the drain pipe 3 later.

Referring to fig. 1 and 2, both ends of the drain pipe 3 are bent and arranged to form a structure similar to a Z shape, a plurality of water inlet holes are hollowed in the peripheral wall of the drain pipe 3, and a first filter cloth rolled into a tubular shape is fixedly bonded to the inner peripheral wall of the drain pipe. One end of the drain pipe 3 is sleeved with a first joint 11 in a sliding manner, and the first joint 11 is in threaded connection with the first branch pipe 8; the other end of the water discharge pipe 3 is sleeved with a second joint 12 in a sliding mode, and the second joint 12 is in threaded connection with the second branch pipe 9. The water outlet pipe 4 is connected with the second branch pipe 9 through screw threads.

After the anchor rods 2 are driven into the soil layer at the bottom of the foundation pit, a plurality of drain pipes 3 are installed between two adjacent anchor rods 2 which are located in the same row one by one, and the drain pipes 3 are arranged in a suspending mode. Then the water outlet pipe 4 is connected with the second branch pipe 9 on the anchor rod 2 at the bottom end of the side slope, and at the moment, the water outlet pipe 4 is arranged in a suspended mode.

And S4, backfilling the soil body to fill the foundation pit.

And S5, leveling and compacting the surface soil body of the slope.

S6, paving and fixing the planting frames 13 on the surface of the side slope, and planting shrubs in a planting area surrounded by the planting frames 13. Specifically, the method comprises the following steps:

referring to fig. 3 and 4, the planting frame 13 is arranged in a diamond shape, the planting frame 13 includes a frame body 131, a fixing ring 132 is integrally formed on the outer side wall of the frame body 131, the thickness of the fixing ring 132 is smaller than that of the frame body 131, and one side of the fixing ring 132 is flush with one side of the frame body 131. The edge of the fixing ring 132 is provided with an arc notch 14, the central angle of the arc notch 14 is 90 degrees, and the radius of the arc notch 14 is equal to the outer diameter of the anchor rod 2. Every planting frame 13 all joint between four adjacent stock 2, and the projection of end cover 5 on the side slope all repeats with the frame 131 that is located four adjacent planting frames 13. The planting frames 13 are distributed on the slope in a rhombic array mode, and the fixing rings 132 on the planting frames 13 are mutually spliced to form a plurality of communicated drainage grooves arranged in a rhombic mode. The adjacent two sides of the lower end of the frame 131 are both provided with a drain hole 15 communicated with the drain groove.

Referring to fig. 2 and 3, when the planting frame 13 is laid, the end cover 5 is unscrewed, the planting frame 13 is placed between the four anchor rods 2, one side of the part of the water storage section 21 exposed out of the side slope and facing the upper end of the side slope is fixedly welded with an arc-shaped baffle plate 16, the central angle of the arc-shaped baffle plate 16 ranges from 180 degrees to 270 degrees, and the central angle of the arc-shaped baffle plate 16 in the application ranges from 180 degrees. By providing the arc-shaped baffle 16, rainwater does not enter the water storage section 21 when flowing in the drain tank. And then the end cover 5 is covered on the anchor rod 2 and is screwed until the end cover 5 presses the frame body 131 to the side slope, and the planting frame 13 is laid. And then planting shrubs in the planting area, and after the shrubs are planted in the planting area, blocking the water inlet of the water drainage hole 15 by using the broken stones to play a role in filtering. After that, the prepared nutrient solution is periodically poured into the anchor rod 2 once to improve the survival rate of shrubs.

The implementation principle of the permanent slope waterproof reinforcement construction method provided by the embodiment of the application is as follows: the anchor rod 2 is matched with the planting frame 13 to reinforce the side slope soil layer and improve the stability of the side slope soil layer, and secondly, shrubs are planted on the side slope, so that the stability of the side slope soil layer is further improved, and the possibility of landslide is reduced.

When raining, rainwater falling on the side slope partially flows down from the side slope along the drainage grooves, and partially permeates into the surface soil layer of the side slope, so that the surface soil layer of the side slope is rich in water. And a part of rainwater permeating into the surface soil layer of the side slope flows into the water storage section 21 from the water outlet hole and flows into the drainage groove from the part of the water storage section 21 exposed out of the side slope, so that primary drainage is completed. The rain water left in the water storage section 21 facilitates the subsequent irrigation of shrubs. The other part of the rainwater permeating the soil layer continuously seeps down to the drainage section 22 and the soil layer where the waterproof coiled material 1 is located. Waterproofing membrane 1 restriction rainwater continues the infiltration, and during this moment, the water that is rich in the side slope soil layer can infiltrate in the drain pipe 3 and flow into drainage section 22, constitutes the drainage channel because of stock 2, drain pipe 3 and outlet pipe 4 to derive the water that is rich in the side slope soil layer, accomplish the secondary drainage, make the side slope soil layer can not collapse because of water absorption saturation, reduced the side slope and taken place the possibility of landslide.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A permanent slope waterproof reinforcement construction method is characterized in that: the method comprises the following steps:

s1, excavating a surface soil body of the side slope to form a foundation pit;

s2, paving and fixing waterproof rolls (1) at the bottom and the side wall of the foundation pit;

s3, establishing a drainage network: dividing grid lines on the waterproof coiled material (1) to determine the embedding position of the anchor rods (2), then driving a plurality of anchor rods (2) into a soil layer at the bottom of the foundation pit one by one according to the divided grid lines, wherein the anchor rods (2) are arranged in a hollow mode; then, a drain pipe (3) is arranged between two adjacent anchor rods (2) in the same column, a plurality of water inlet holes are arranged in a hollowed manner on the peripheral wall of the drain pipe (3), first filter cloth is fixedly bonded on the inner peripheral wall of the drain pipe (3), then a row of anchor rods (2) at the bottom end of the side slope are externally connected with a water outlet pipe (4), and the water outlet pipe (4) extends out of the lower end of the side slope soil layer;

s4, backfilling a soil body to fill the foundation pit;

s5, leveling and compacting the soil body on the surface layer of the side slope;

s6, paving the plurality of planting frames (13) on the surface of the side slope, and planting shrubs in a planting area surrounded by the planting frames (13);

the anchor rod (2) is arranged in a hollow mode, a first branch pipe (8) and a second branch pipe (9) are communicated with the side wall of the anchor rod (2), and the height of the first branch pipe (8) is higher than that of the second branch pipe (9); the two ends of the drain pipe (3) are arranged in a bent mode, a first joint (11) is sleeved on one section of the drain pipe (3) in a sliding mode, the first joint (11) is in threaded connection with the first branch pipe (8), a second joint (12) is sleeved on the other end of the drain pipe (3) in a sliding mode, and the second joint (12) is in threaded connection with the second branch pipe (9); when the anchor rod (2) is buried, the orientation of the first joint (11) is adjusted to enable the first joint to face the upper end of the side slope;

a first partition plate (6) and a second partition plate (7) are fixedly connected in sequence in the anchor rod (2) from top to bottom, the anchor rod (2) is sequentially divided into a water storage section (21), a water drainage section (22) and an anchoring section (23) from top to bottom through the first partition plate (6) and the second partition plate (7), the first branch pipe (8) and the second branch pipe (9) are arranged on the water drainage section (22), and a plurality of water outlet holes are hollowed in the peripheral wall of the water storage section (21); after the planting frames (13) are laid, an arc-shaped baffle (16) is welded and fixed at the part of the water storage section (21) exposed out of the side slope, the arc-shaped baffle (16) is positioned on one side of the water storage section (21) facing the upper end of the side slope, and the central angle of the arc-shaped baffle (16) ranges from 180 degrees to 270 degrees.

2. The construction method for waterproof and reinforcing permanent side slope according to claim 1 is characterized in that: the outer wall of anchor section (23) cup joints and is fixed with sealing ring (10), and in the work progress of stock (2), when sealing ring (10) compressed tightly waterproofing membrane (1) in the foundation ditch bottom, stopped beating stock (2), accomplished the construction of stock (2).

3. The construction method for waterproof and reinforcing permanent side slope according to claim 2 is characterized in that: plant frame (13) and be the setting of rhombus, every equal joint of planting frame (13) is between four adjacent stock (2), it includes framework (131) to plant frame (13), the periphery integrated into one piece of framework (131) has solid fixed ring (132), one side of solid fixed ring (132) flushes with one side of framework (131), the thickness of solid fixed ring (132) is less than the thickness of framework (131), is located solid fixed ring (132) on a plurality of planting frames (13) and supports tightly each other and form a plurality of drainage tank that are the setting of rhombus and intercommunication.

4. The construction method for waterproof and reinforcing permanent side slope according to claim 3 is characterized in that: arc breach (14) have all been seted up at the corner of solid fixed ring (132), the radius of arc breach (14) equals with the external diameter of stock (2).

5. The construction method for waterproof and reinforcing permanent side slope according to claim 3 is characterized in that: the upper end threaded connection of stock (2) has end cover (5), the projection of end cover (5) on the side slope all partially overlaps with framework (131) that are located on four adjacent planting frames (13) and sets up.

6. The construction method for waterproof and reinforcing permanent side slope according to claim 3 is characterized in that: the two adjacent side walls at the lower end of the frame body (131) are provided with drain holes (15) communicated with the drainage grooves, and after the planting frame (13) is laid on a side slope soil layer, the water inlets of the drain holes (15) are shielded by broken stones.