CN112459835A - Device for preventing crystal blockage of tunnel drainage system in karst area - Google Patents

Device for preventing crystal blockage of tunnel drainage system in karst area Download PDF

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Publication number
CN112459835A
CN112459835A CN202011329557.1A CN202011329557A CN112459835A CN 112459835 A CN112459835 A CN 112459835A CN 202011329557 A CN202011329557 A CN 202011329557A CN 112459835 A CN112459835 A CN 112459835A
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China
Prior art keywords
water pipe
injection water
pipe
tunnel
shell
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Pending
Application number
CN202011329557.1A
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Chinese (zh)
Inventor
李�杰
唐志成
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China University of Geosciences
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China University of Geosciences
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Application filed by China University of Geosciences filed Critical China University of Geosciences
Priority to CN202011329557.1A priority Critical patent/CN112459835A/en
Publication of CN112459835A publication Critical patent/CN112459835A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00Drainage
    • E21F16/02Drainage of tunnels
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F17/00Methods or devices for use in mines or tunnels, not covered elsewhere

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The invention provides a device for preventing crystal blockage of a tunnel drainage system in a karst region, which comprises an injection water pipe penetrating through the interior of the drainage pipe and a plurality of dilution dispersion parts sleeved on the injection water pipe at intervals, wherein each dilution dispersion part comprises a cylindrical shell and two flow baffles arranged at two ends of the shell respectively, each flow baffle comprises a plurality of flow baffles arranged around the injection water pipe, the flow baffles of the two flow baffles are arranged in a relatively staggered mode, a water spray opening is formed in the part, located in the shell, of the injection water pipe, the injection water pipe is used for inputting a pressure scale inhibition solution, the scale inhibition solution enters the shell from the water spray opening, and underground water in the drainage pipe repeatedly impacts between the two flow baffles when flowing through the dilution dispersion parts to mix and dilute the scale inhibition solution in the shell. The invention has the beneficial effects that: can effectively prevent the crystallization of groundwater in the drain pipe, the device can be simultaneously operated along with the drainage system, and can play a better prevention effect in the early stage of tunnel construction.

Description

Device for preventing crystal blockage of tunnel drainage system in karst area
Technical Field
The invention relates to the technical field of tunnel drainage systems, in particular to a device for preventing crystallization blockage of a tunnel drainage system in a karst region.
Background
The calcium crystallization blocking phenomenon often occurs in a tunnel drainage system of a karst area, and the crystallization blocking phenomenon mainly occurs in a transverse drainage pipe and a longitudinal drainage pipe. The tunnel drain pipe not only causes the drainage not smooth because of the continuous increase of crystallization, leads to tunnel water pressure to constantly increase moreover, prevents the drainage system to cause destruction to the tunnel, finally leads to the problem of tunnel large tracts of land percolating water, causes great influence to tunnel construction, operation phase driving safety. At present, a better treatment method is lacked for crystallization blockage of a tunnel drainage system at home and abroad, most of the crystallization blockage is treated after diseases occur, the symptoms are treated but not the root causes, and better preventive measures are not taken in the tunnel construction process.
Disclosure of Invention
In view of the above, in order to solve the problem of crystal blockage of the tunnel drainage system, embodiments of the present invention provide an apparatus for preventing crystal blockage of the tunnel drainage system in the karst region.
The embodiment of the invention provides a device for preventing crystal blockage of a drainage system of a tunnel in a karst region, a drainage pipe is buried underground in the tunnel, the device comprises an injection water pipe penetrating through the drainage pipe and a plurality of dilution and dispersion components sleeved on the injection water pipe at intervals, wherein each dilution and dispersion component comprises a cylindrical shell and two spoilers respectively arranged at two ends of the shell, the flow blocking plates comprise a plurality of flow blocking plates arranged around the injection water pipe, the flow blocking plates of the two flow blocking plates are arranged in a relatively staggered way, the part of the injection water pipe, which is positioned in the shell, is provided with a water spray opening, the injection water pipe is used for inputting a pressure scale inhibition solution, the scale inhibition solution enters the shell from the water spray opening, and when underground water in the drainage pipe flows through the dilution dispersion part, the underground water repeatedly impacts between the two flow blocking sheets to mix and dilute the scale inhibition solution in the shell.
Furthermore, the flow blocking plates are fan-shaped blades, and the flow blocking plates are uniformly distributed around the injection water pipe.
Further, the surface of the dilution distribution part is wrapped with a geotechnical material layer.
Furthermore, a plurality of flanges are sleeved on the outer wall of the injection water pipe at equal intervals, and each dilution dispersion part is fixedly connected with one flange.
Further, the scale inhibition solution is a scale inhibitor solution or an acidic solution.
Furthermore, the drain pipe comprises a longitudinal drain pipe and a transverse drain pipe which are communicated with each other, the transverse drain pipe is obliquely arranged, the upper end of the transverse drain pipe is connected with the longitudinal drain pipe, and the lower end of the transverse drain pipe extends to the central drain ditch;
the injection water pipe includes horizontal injection water pipe and vertical injection water pipe, horizontal injection water pipe with vertical injection water pipe passes through three-way connection, horizontal injection water pipe with all the cover is equipped with a plurality ofly on the vertical injection water pipe dilute dispersion parts.
Furthermore, the injection water pipe still includes the right angle turn, right angle turn one end with the tee junction, the other end extends tunnel secondary lining layer, the right angle turn is used for connecting outside high-pressure pump.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: according to the device for preventing the crystal blockage of the tunnel drainage system in the karst region, the dilution dispersion part is arranged in the drainage pipe, and underground water in the drainage pipe repeatedly impacts between the two flow blocking pieces when flowing through the dilution dispersion part to mix and dilute scale inhibition solution in the shell, so that the crystallization of the underground water in the drainage pipe can be effectively prevented, the device can be simultaneously applied along with the drainage system, and a better prevention effect can be exerted at the early stage of tunnel construction; the injection water pipe passes through the drain pipe and realizes fixing, dilutes dispersion devices cover and locates on the injection water pipe, and design benefit has saved loaded down with trivial details fixed setting, has saved construction cost.
Drawings
FIG. 1 is a schematic view of the dilution dispersion member of an apparatus for preventing crystal plugging in tunnel drainage systems in karst areas according to the present invention;
fig. 2 is a schematic view of the water injection pipe 1 of fig. 1 located in an inner portion of the housing 5;
FIG. 3 is a schematic diagram of an application of the device for preventing crystal blockage of a tunnel drainage system of a karst region.
In the figure: 1-drain pipe, 2-injection water pipe, 3-dilution dispersion component, 4-geotechnical material layer, 5-outer shell, 6-flow damper, 7-flow damper, 8-flange, 9-water jet, 10-horizontal drain pipe, 11-longitudinal drain pipe, 12-horizontal injection water pipe, 13-tee joint, 14-right angle bend, 15-central drain ditch and 16-initial supporting layer; 17-secondary lining layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a device for preventing crystal blockage of a drainage system of a tunnel in a karst region, wherein a drainage pipe 1 is buried underground in the tunnel, and the device comprises an injection water pipe 2 penetrating through the interior of the drainage pipe 1 and a plurality of dilution and dispersion parts 3 sleeved on the injection water pipe 2 at intervals.
The injection water pipe 2 is inserted into the drain pipe 1 to be fixed. The number of the dilution dispersion members 3 is determined according to the length of the drain pipe 1, and all the dilution dispersion members 3 are uniformly distributed in the length direction of the injection water pipe 2. The dilution dispersion part 3 is sleeved on the injection water pipe 2, in addition, a plurality of flanges 8 are sleeved on the outer wall of the injection water pipe 2 at equal intervals, and each dilution dispersion part 3 is fixedly connected with one flange 8.
Each diluting and dispersing component 3 comprises a cylindrical shell 5 and two flow baffles 6 which are respectively arranged at two ends of the shell 5, the two flow baffles 6 are respectively fixed at ports at two ends of the shell 5, and the injection water pipe 2 sequentially penetrates through the middle parts of the two flow baffles 6.
The flow blocking plate 6 comprises a plurality of flow blocking plates 7 arranged around the injection water pipe 2. Preferably, the flow blocking plate 7 is a fan-shaped blade, and a plurality of flow blocking plates 7 are uniformly distributed around the injection water pipe 2. The flow blocking plates 7 of the two flow blocking plates 6 are arranged in a relatively staggered mode, the number of the flow blocking plates 7 is four, the four flow blocking plates 7 equally divide the flow blocking plates 6, and gaps for fluid to flow through are reserved between every two adjacent flow blocking plates 7. The flow blocking plates 7 of the two flow blocking plates 6 are staggered relatively in the axial direction of the shell 5, so that fluid entering the shell 5 can be blocked by the flow blocking plates 7 at the two ends of the shell 5 to flow back and forth in the shell 5, and the aim of fully mixing the liquid in the shell 5 is fulfilled.
In order to prevent 5 outside silt of shell, the surface coating that dilutes distribution component 3 has geotechnological material layer 4, geotechnological material layer 4 has good water permeability, does not influence the mixed liquid outflow after diluting shell 5, and can effectively the separation silt entering shell 5.
Referring to fig. 2, a water spraying port 9 is provided at a portion of the injection water pipe 2 located in the housing 5, the water spraying port 9 is close to the middle portion of the housing 5, the injection water pipe 2 is used for inputting a pressure scale inhibiting solution, and the scale inhibiting solution in the injection water pipe 2 can enter the housing 5 through the water spraying port 9. And selecting a proper scale inhibitor solution or an acid solution according to the actual condition of the tunnel.
Referring to fig. 3, when the device for preventing crystal blockage of a karst region tunnel drainage system is actually applied to the karst region tunnel drainage system, generally, the drainage pipe 1 includes a longitudinal drainage pipe 11 and a transverse drainage pipe 10 which are communicated with each other, and the longitudinal drainage pipe 11 is embedded in a secondary lining layer 17 inside an initial support layer 16 of a tunnel and is located at one side of the bottom of the secondary lining layer 17 and extends along the longitudinal direction. The transverse drain pipes 10 are obliquely arranged, the upper ends of the transverse drain pipes are connected with the longitudinal drain pipes 11, the lower ends of the transverse drain pipes extend to the central drain ditch 15, and the number of the transverse drain pipes 10 can be multiple.
At this time, the injection water pipe 2 comprises a transverse injection water pipe 12 and a longitudinal injection water pipe, the transverse injection water pipe 12 and the longitudinal injection water pipe are connected through a tee 13, and a plurality of the dilution dispersion parts 3 are sleeved on the transverse injection water pipe 12 and the longitudinal injection water pipe. In addition, the injection water pipe 2 further comprises a right-angle bent elbow 14, one end of the right-angle bent elbow 14 is connected with the tee joint 13, the other end of the right-angle bent elbow 14 extends out of the tunnel secondary lining layer 17, and the right-angle bent elbow 14 is used for being connected with an external high-pressure pump.
The working process of the device applied to the drainage system of the tunnel in the karst area is as follows:
(1) determining a scale inhibition solution according to the actual situation of the tunnel, namely determining the period and the type of injecting a scale inhibitor solution or an acidic solution;
(2) pumping the prepared scale inhibition solution into the injection water pipe 2 through a pipe orifice of a right-angled bent 14 extending out of the inner wall of the tunnel secondary lining layer 17 by using a high-pressure pump;
(3) the scale inhibition solution passes through a tee joint 13, one part of the scale inhibition solution flows into a transverse injection water pipe 12 in the transverse drain pipe 10, the other part of the scale inhibition solution flows into a longitudinal injection water pipe in the longitudinal drain pipe 11, and then the scale inhibition solution respectively enters each dilution dispersion part 3 through the water spray opening 9;
(4) because the flow blocking sheets 7 of the two flow blocking plates 6 at the two ends of the shell 5 are arranged in a relatively staggered manner, when underground water in the transverse drain pipe 10 and the longitudinal drain pipe 11 flows through the dilution dispersion part 3, the underground water is repeatedly impacted and flows between the two flow blocking plates 6 under the blocking action of the two flow blocking plates 6, and is fully diluted and dispersed with the scale inhibition solution in the dilution dispersion part 3, so that the crystal blockage of a tunnel drain pipe is effectively prevented.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. The utility model provides a device that prevention karst district tunnel drainage system crystallization was blockked up, the drain pipe has been buried underground in the tunnel, its characterized in that: the device is including passing the inside injection water pipe and the spacer sleeve of drain pipe are located a plurality of dilution dispersion parts on the injection water pipe, each dilute dispersion parts include the tube-shape shell and set up respectively in two spoilers at shell both ends, the spoiler is including encircleing the injection water pipe sets up a plurality of spoilers, two the spoiler setting of staggering relatively of spoiler, the injection water pipe is located part in the shell is equipped with the water jet, the injection water pipe is used for input pressure to hinder dirty solution, hinders dirty solution by the water jet gets into in the shell, the intraductal groundwater of drain flows through when diluting dispersion parts in two strike repeatedly between the spoiler, it is right to hinder dirty solution mixing dilution in the shell.
2. The apparatus for preventing crystal blockage in a tunnel drainage system in a karst area of claim 1, wherein: the flow blocking plates are fan-shaped blades and are uniformly distributed around the injection water pipe.
3. The apparatus for preventing crystal blockage in a tunnel drainage system in a karst area of claim 1, wherein: the surface of the dilution distribution component is wrapped with a geotechnical material layer.
4. The apparatus for preventing crystal blockage in a tunnel drainage system in a karst area of claim 1, wherein: the outer wall of the injection water pipe is sleeved with a plurality of flanges at equal intervals, and each dilution dispersion part is fixedly connected with one flange.
5. The apparatus for preventing crystal blockage in a tunnel drainage system in a karst area of claim 1, wherein: the scale inhibition solution is a scale inhibitor solution or an acidic solution.
6. The apparatus for preventing crystal blockage in a tunnel drainage system in a karst area of claim 1, wherein: the drainage pipe comprises a longitudinal drainage pipe and a transverse drainage pipe which are communicated with each other, the transverse drainage pipe is obliquely arranged, the upper end of the transverse drainage pipe is connected with the longitudinal drainage pipe, and the lower end of the transverse drainage pipe extends to the central drainage ditch;
the injection water pipe includes horizontal injection water pipe and vertical injection water pipe, horizontal injection water pipe with vertical injection water pipe passes through three-way connection, horizontal injection water pipe with all the cover is equipped with a plurality ofly on the vertical injection water pipe dilute dispersion parts.
7. The apparatus for preventing crystal blockage in a tunnel drainage system in a karst area of claim 6, wherein: the injection water pipe further comprises a right-angle bent, one end of the right-angle bent is connected with the tee joint, the other end of the right-angle bent extends out of the secondary lining layer of the tunnel, and the right-angle bent is used for being connected with an external high-pressure pump.
CN202011329557.1A 2020-11-24 2020-11-24 Device for preventing crystal blockage of tunnel drainage system in karst area Pending CN112459835A (en)

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CN202011329557.1A CN112459835A (en) 2020-11-24 2020-11-24 Device for preventing crystal blockage of tunnel drainage system in karst area

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Application Number Priority Date Filing Date Title
CN202011329557.1A CN112459835A (en) 2020-11-24 2020-11-24 Device for preventing crystal blockage of tunnel drainage system in karst area

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CN1040155A (en) * 1988-07-14 1990-03-07 加拿大西方石油有限公司 The preparation method of coal-in-aqueous phase mixture
CN1116963A (en) * 1994-04-19 1996-02-21 小久夫 Element of mixing apparatus and making of same
TW200908075A (en) * 2007-05-14 2009-02-16 Air Liquide Systems and methods for mixing fluids
CN203620528U (en) * 2013-12-19 2014-06-04 中铁工程装备集团有限公司 Liquid-water mixing device of shield foaming system
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CN207533075U (en) * 2017-08-04 2018-06-26 赛鼎工程有限公司 A kind of mixing tube that partial gasification agent is substituted for carbon dioxide
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CN108671781A (en) * 2018-05-15 2018-10-19 合肥智慧龙图腾知识产权股份有限公司 A kind of agricultural insect pests control medication water mixing device
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Application publication date: 20210309