CN220814156U - Drainage structure of blind drain - Google Patents

Abstract

The application provides a blind ditch drainage structure which comprises a pipeline groove, wherein the pipeline groove is used for arranging a main rainwater pipeline, a blind ditch is arranged below the main rainwater pipeline at the lower end of the pipeline groove, a first gravel layer is paved at the bottom end of the blind ditch, a blind pipe is arranged on the first gravel layer, the blind pipe is interweaved into a cylindrical hollow structure by a plurality of layers of bent structural wires, the center of the cylindrical hollow structure is a hollow water channel, the outer side of the blind pipe is wrapped with water permeable geotechnical cloth, the outer side of the blind pipe in the blind ditch is filled with a second gravel layer, and a fine sand layer is paved on the second gravel layer, so that the problem that the side wall is easy to collapse after water seepage and water accumulation of the groove is solved.

Description

Drainage structure of blind drain

Technical Field

The utility model relates to the field of municipal drainage, in particular to a blind drain structure.

Background

The stratum in the A market mainly takes powdery clay as main material, is in a soft plastic shape, has general bearing capacity, high water content of local soil body, poor bearing, larger rainwater deformation and higher groundwater level in an engineering area.

The ground groundwater types are mainly upper stagnant water in the element fill layer and pore bearing water in the gravel layer. The upper layer stagnant water level is stabilized at 0.8-2.50 m below the natural ground, and the elevation is 41.18-43.59 m, and is in the depth digging range of the engineering pipeline groove, so that the upper layer stagnant water level has a certain influence on engineering construction, and is mainly expressed to flow out from the side wall of the groove when the groove is excavated, and the side wall of the groove is likely to collapse.

In the construction of the pipeline groove, the original adoption of the water collecting pit and the high-power diesel oil water pump are used for draining the groove, but the problems of the size of the groove and the construction safety are solved, and the depth of the water collecting pit is shallower. Meanwhile, the upper layer stagnant water mainly comprises pore water, the channel is mainly oozed from the side wall and the bottom of the channel after being excavated, the single water collecting pit has poor collecting efficiency and small collecting range, a plurality of water pumps are required to be equipped during multi-point simultaneous construction, the high-power water pump has long idle time, and the water is discharged for tens of minutes each time, so that a large amount of manpower is occupied for pumping and carrying the water pumps.

Disclosure of utility model

The utility model provides a blind ditch drainage structure, which solves the problem that side walls collapse easily after water seepage and water accumulation of a ditch.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a blind drain drainage structures, including the pipeline slot, the pipeline slot is used for arranging main rainwater pipeline, the below of pipeline slot lower extreme main rainwater pipeline is equipped with the blind ditch, first gravel layer is laid to the blind ditch bottom, arrange the blind pipe on the first gravel layer, the blind pipe is interweaved into cylindric hollow out construction by the structural wire of multilayer bending, cylindric hollow out construction central authorities are hollow water channel, the blind pipe outside parcel geotechnique cloth that permeates water, the second gravel layer is filled in the outside of blind pipe in the blind ditch, fine sand layer is laid on the second gravel layer.

In the preferred scheme, still include blind pipe joint, a plurality of blind pipes pass through blind pipe joint intercommunication, and the blind pipe joint is including first adapter sleeve and the second adapter sleeve that cup joints mutually, and first adapter sleeve and second adapter sleeve cup joint in the butt joint department outside of blind pipe, and one side that first adapter sleeve and second adapter sleeve kept away from mutually respectively is equipped with the claw cover, and the end of blind pipe is hooked to the claw cover.

In the preferred scheme, first adapter sleeve and second adapter sleeve are equipped with interior knot portion, and the claw cover is equipped with the flange, and interior knot portion is used for backstop flange, and claw cover one end cup joints with first adapter sleeve or second adapter sleeve, and claw cover other end is equipped with a plurality of barbs along circumference, and the barb hooks the structural wire in the blind pipe outside.

In a preferred embodiment, the back side of the barb end is provided with a guide slope.

In the preferred scheme, a plurality of water leakage pores are formed in the side walls of the first connecting sleeve and the second connecting sleeve.

The beneficial effects of the utility model are as follows: through the technology of utilizing the blind pipe drainage, the upper strata in getting rid of the soil body is diapause or is dived, falls the soil base water content in the road bed to engineering tolerance within range to reduce the steamed worker of water pump and artificial consumption, improve the efficiency of slot drainage, avoid the pipeline subsidence that the slot bubble water caused and improve the personnel's safety in the work progress.

Drawings

The utility model is further described below with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the present utility model.

Fig. 2 is a schematic view of the present utility model in a blind drain.

Fig. 3 is an elevation view of the blind tube structure of the present utility model.

Fig. 4 is a cross-sectional view of a blind tube structure of the present utility model.

Fig. 5 is a blind pipe butt joint view of the present utility model.

Fig. 6 is a block diagram of a blind pipe joint according to the present utility model.

In the figure: blind ditches 1; a blind pipe 2; a structural wire 201; a water permeable geotextile 3; a first crushed stone layer 4; a second crushed stone layer 5; a fine sand layer 6; a blind pipe joint 7; a first coupling sleeve 701; a second connection sleeve 702; an inner fastening portion 703; claw sleeve 704; a flange 705; barbs 706; a guide ramp 707; water leakage fine holes 708; a rain pipe cushion layer 8; a pipe groove 9; a main storm drain 10.

Detailed Description

Example 1:

1-6, a blind drain structure, including pipeline slot 9, pipeline slot 9 is used for arranging main rainwater pipeline 10, the below of pipeline slot 9 lower extreme main rainwater pipeline 10 is equipped with blind ditch 1, first gravel layer 4 is laid to blind ditch 1 bottom, arrange blind pipe 2 on the first gravel layer 4, the blind pipe 2 interweaves cylindric hollow structure by the structure silk 201 of multilayer bending, cylindric hollow structure central authorities are hollow water channel, the outside parcel geotechnique cloth 3 permeates water of blind pipe 2, second gravel layer 5 is filled in the outside of blind pipe 2 in the blind ditch 1, lay fine sand layer 6 on the second gravel layer 5.

After the fine sand layer 6 is filled, the rainwater pipe cushion layer 8 is continuously paved in the pipeline groove 9, then the main rainwater pipeline 10 is arranged, and finally backfilling is carried out on the outer side of the main rainwater pipeline 10. The blind pipe 2 is manufactured by heating and melting thermoplastic synthetic resin, extruding fiber filaments through a nozzle and superposing the fiber filaments together, and dissolving and bonding the fiber filaments at the phase points to manufacture the three-dimensional porous pipe.

The water permeable geotextile 3 is provided with fine and dense holes, and can permeate water but prevent large soil particles from falling into the hollow holes of the blind pipe 2 to cause blockage.

The accumulated water on the outer side permeates into a hollow water passing channel in the blind pipe 2 through the hollow holes of the blind pipe 2, underground water in the groove is collected into a large-sized water collecting pit of the last well position on the downstream, and a large-displacement pumping device is arranged for uniform pumping.

In the preferred scheme, the blind pipe joint further comprises a blind pipe joint 7, a plurality of blind pipes 2 are communicated through the blind pipe joint 7, the blind pipe joint 7 comprises a first connecting sleeve 701 and a second connecting sleeve 702 which are sleeved with each other, the first connecting sleeve 701 and the second connecting sleeve 702 are sleeved on the outer side of the butt joint position of the blind pipes 2, a claw sleeve 704 is arranged on one side, away from the first connecting sleeve 701 and the second connecting sleeve 702, of each of the two sides, and the claw sleeve 704 hooks the end head of the blind pipe 2.

In a preferred scheme, the first connecting sleeve 701 and the second connecting sleeve 702 are provided with an inner buckling part 703, the claw sleeve 704 is provided with a flange 705, the inner buckling part 703 is used for stopping the flange 705, one end of the claw sleeve 704 is sleeved with the first connecting sleeve 701 or the second connecting sleeve 702, the other end of the claw sleeve 704 is provided with a plurality of barbs 706 along the circumferential direction, and the barbs 706 hook the structural wires 201 on the outer side of the blind pipe 2.

The barb 706 has a certain elasticity, and the whole claw sleeve 704 can be made of stainless steel or plastic.

In a preferred embodiment, the back side of the end of barb 706 is provided with a guide ramp 707.

In a preferred embodiment, the sidewalls of the first coupling sleeve 701 and the second coupling sleeve 702 are provided with a plurality of water leakage holes 708.

Two claw sleeves 704 are respectively sleeved in a first connecting sleeve 701 and a second connecting sleeve 702, the first connecting sleeve 701 and the second connecting sleeve 702 are respectively sleeved outside two blind pipes 2 in a back-to-back mode, a guide slope 707 guides the claw sleeves 704 to enable the claw sleeves to move unidirectionally along the blind pipes 2, the ends of the two blind pipes 2 are contacted, barbs 706 hook structural wires 201 of the blind pipes 2, and the first connecting sleeve 701 and the second connecting sleeve 702 are butted and screwed until the two blind pipes 2 are tensioned.

The accumulated water outside the first and second connection sleeves 701 and 702 can permeate inwards through the water leakage fine holes 708.

The outer sides of the first connecting sleeve 701 and the second connecting sleeve 702 can be wrapped with geotextiles.

Example 2:

After the pipeline trench is excavated to the bottom elevation of the broken stone replacement and filling, a trench with the bottom width of 200mm and the depth of 350mm is excavated along the bottom edge of the trench by using mechanical cooperation manual work, 100mm broken stone is paved as a drainage blind pipe base, a phi 150 drainage blind pipe wrapped by geotechnical cloth is installed, then 100mm broken stone is paved on the drainage blind pipe, fine sand is scattered on the drainage blind pipe, and finally broken stone replacement and filling of a main pipeline and cushion layer construction are carried out.

Underground water in the groove is collected into a large-sized water collecting pit of the last well position at the downstream through burying a drainage blind pipe, and a large-displacement pumping device is arranged for uniform pumping and drainage.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (5)

1. A drain structure of blind ditch, characterized by: including pipeline slot (9), pipeline slot (9) are used for arranging main rainwater pipeline (10), the below of pipeline slot (9) lower extreme main rainwater pipeline (10) is equipped with french drain (1), first gravel layer (4) are laid to french drain (1) bottom, arrange blind pipe (2) on first gravel layer (4), blind pipe (2) are interweaved cylindric hollow out construction by multilayer crooked structural wire (201), cylindric hollow out construction central authorities are hollow water channel, the outside parcel geotechnique cloth (3) of permeating water of blind pipe (2), second gravel layer (5) are filled in the outside of blind pipe (2) in french drain (1), fine sand layer (6) are laid on second gravel layer (5).

2. The blind drain structure according to claim 1, wherein: still include blind pipe joint (7), a plurality of blind pipes (2) connect (7) intercommunication through the blind pipe, and blind pipe joint (7) are including first adapter sleeve (701) and second adapter sleeve (702) that cup joint mutually, and first adapter sleeve (701) cup joints in the butt joint department outside of blind pipe (2) with second adapter sleeve (702), and one side that first adapter sleeve (701) and second adapter sleeve (702) kept away from mutually respectively is equipped with claw cover (704), and the end of blind pipe (2) is hooked to claw cover (704).

3. The blind drain structure according to claim 2, wherein: the first connecting sleeve (701) and the second connecting sleeve (702) are provided with inner buckling parts (703), the claw sleeves (704) are provided with flange edges (705), the inner buckling parts (703) are used for stopping the flange edges (705), one ends of the claw sleeves (704) are sleeved with the first connecting sleeve (701) or the second connecting sleeve (702), a plurality of barbs (706) are arranged at the other ends of the claw sleeves (704) along the circumferential direction, and the barbs (706) hook structural wires (201) on the outer sides of the blind pipes (2).

4. A blind drain structure according to claim 3, wherein: the back side of the end part of the barb (706) is provided with a guide slope (707).

5. The blind drain structure according to claim 2, wherein: the side walls of the first connecting sleeve (701) and the second connecting sleeve (702) are provided with a plurality of water leakage pores (708).