CN110847325A - Construction process of sewage pipe network in villages and towns by horizontal directional drilling - Google Patents

Construction process of sewage pipe network in villages and towns by horizontal directional drilling Download PDF

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Publication number
CN110847325A
CN110847325A CN201911271295.5A CN201911271295A CN110847325A CN 110847325 A CN110847325 A CN 110847325A CN 201911271295 A CN201911271295 A CN 201911271295A CN 110847325 A CN110847325 A CN 110847325A
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China
Prior art keywords
pipeline
drilling
hole
pore
soil
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Pending
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CN201911271295.5A
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Inventor
杨正丽
杨正华
黄勇
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NANTONG HUAXIN CONSTRUCTION ENGINEERING GROUP Co Ltd
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NANTONG HUAXIN CONSTRUCTION ENGINEERING GROUP Co Ltd
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Priority to CN201911271295.5A priority Critical patent/CN110847325A/en
Publication of CN110847325A publication Critical patent/CN110847325A/en
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/06Methods of, or installations for, laying sewer pipes
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/04Directional drilling
    • E21B7/046Directional drilling horizontal drilling
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/28Enlarging drilled holes, e.g. by counterboring

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Earth Drilling (AREA)

Abstract

The invention relates to a construction process of a sewage pipe network in a village and a town by using a horizontal directional drill, which comprises the following steps: 1) determining a pore canal formed by an inclined line segment, a curve segment and a horizontal straight line segment of the track segment of the directional pore; 2) drilling a guide hole by using an arrow-type small drill bit, drilling a drill rod from the ground, controlling the direction and the depth of the drill bit, and drilling into an accurate positioning guide hole; 3) then, reversely expanding the soil back by using the guide hole, and only crushing the undisturbed soil in the designed hole diameter during expanding the soil back; 4) finally, cleaning out soil in the pore channel by utilizing hole cleaning equipment to form a pore channel for installing the pipe; 5) welding a pipeline: the pipeline is made of PE pipes and is welded in a hot melting mode; 6) after the pipeline is connected, the pipeline is uniformly and stably pulled, and clean water is injected into the pipeline from the tail of the pipeline in the pulling construction process, so that the self weight of the pipeline is increased, and the pipeline is prevented from floating upwards; 7) after the pipeline is pulled through, in order to avoid the collapse of the pavement, the construction is carried out in time by adopting an in-hole grouting reinforcement method. The process method improves the surface smoothness of the drilled hole and ensures the strength of the constructed pavement.

Description

Construction process of sewage pipe network in villages and towns by horizontal directional drilling
Technical Field
The invention relates to a construction process of a sewage pipe network in a village and a town by using a horizontal directional drill, belonging to the field of sewage pipe networks.
Background
In the sewage pipe network construction process, according to the directional construction process, in the dragging process of the pipeline, the pipeline is always suspended at the upper part of the pore canal because the pipeline is hollow and the specific gravity is smaller than the specific gravity of the slurry, so that the dragging force is overlarge or the elevation deviation exceeds the standard requirement. In addition, the soil in the construction area is silty clay, underground water is abundant, and the problems of road surface collapse and the like caused by pore canal collapse and the like are easily caused.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction process of a horizontal directional drill in a sewage pipe network in villages and towns, and the process method improves the surface smoothness of a drill hole and ensures the strength of a constructed road surface.
In order to solve the above problems, the specific technical scheme of the invention is as follows: a construction process of a sewage pipe network in a village and a town by using a horizontal directional drill comprises the following steps:
1) determining a pore canal formed by an inclined line segment, a curve segment and a horizontal straight line segment of the track segment of the directional pore;
2) drilling a guide hole by using an arrow-type small drill bit with the outer diameter slightly larger than that of the drill rod, drilling the drill rod from the ground, receiving a message sent by a transmitter in the underground drill bit by a ground instrument, controlling the direction and the depth of the drill bit, and drilling the drill bit into an accurate positioning guide hole;
3) then, reversely expanding the soil back by using the guide hole, and only crushing the undisturbed soil in the designed hole diameter during expanding the soil back;
4) finally, cleaning out soil in the pore channel by utilizing hole cleaning equipment to form a pore channel for installing the pipe;
5) welding a pipeline: the pipeline is made of PE pipes and is welded in a hot melting mode;
6) after the pipeline is connected, the pipeline is uniformly and stably pulled, and clean water is injected into the pipeline from the tail of the pipeline in the pulling construction process, so that the self weight of the pipeline is increased, and the pipeline is prevented from floating upwards;
7) after the pipeline is pulled through, in order to avoid the collapse of the pavement, the construction is carried out in time by adopting an in-hole grouting reinforcement method.
In the processes of drilling the guide hole and back reaming in the step 2) and the step 3), drilling fluid is added, and the components of the drilling fluid comprise, by weight, 20% of bentonite, 1% of commercially available drilling fluid, 0.4% of caustic soda and the balance of water.
The grouting component in the step 7) consists of a liquid A and a liquid B, wherein the liquid A: liquid B = 3: 1; the solution A consists of water and cement, and the weight part ratio of the water to the cement is 0.75-1.5: 1; the liquid B comprises 35-40% of water glass, 2-3% of retarder and the balance of water.
The two sides of the pore passage are provided with downward inclined sections, the outer end part of the inclined section at the inlet is provided with a working pit (1), the outer end part of the inclined section at the outlet is provided with a receiving pit, and the depths of the working pit and the receiving pit are less than the depth of the horizontal section; the horizontal section in the middle of the pore canal is provided with a plurality of pressure relief pits.
The construction process of the horizontal directional drill in the sewage pipe network in villages and towns adopts the process, the pore is finally formed, the inner wall is smooth, the pipeline is convenient to drag in, and the installation work is completed.
Drawings
Fig. 1 is a schematic view of the drilling construction of the present application.
Fig. 2 is a schematic view of back-reaming drilling construction according to the present application.
Fig. 3 is a schematic diagram of the construction of the pore canal mud cleaning of the application.
Fig. 4 is a schematic diagram of pipeline dragging installation construction according to the application.
Detailed Description
A construction process of a sewage pipe network in a village and a town by using a horizontal directional drill comprises the following steps:
1) as shown in fig. 1, determining a directional hole trajectory line segment, wherein the directional hole trajectory line segment comprises an inclined line segment, a curved line segment and a horizontal straight line segment to form a hole channel;
2) drilling a guide hole by using an arrow-type small drill bit with the outer diameter slightly larger than that of the drill rod, drilling the drill rod from the ground, receiving a message sent by a transmitter in the underground drill bit by a ground instrument, controlling the direction and the depth of the drill bit, and drilling the drill bit into an accurate positioning guide hole;
3) then, the guide hole is utilized to reversely expand back, and only the undisturbed soil in the designed hole diameter is crushed during expanding back, as shown in figure 2;
4) finally, cleaning out soil in the pore channel by utilizing hole cleaning equipment to form a pore channel for installing the pipe, as shown in figure 3;
5) welding a pipeline: the pipeline is made of PE pipes and is welded in a hot melting mode;
6) after the pipeline is connected, the pipeline is uniformly and stably pulled, as shown in fig. 4, in the dragging construction process, clear water is injected into the pipeline from the tail of the pipeline, the self weight of the pipeline is increased, and the pipeline is prevented from floating upwards;
7) after the pipeline is pulled through, in order to avoid the collapse of the pavement, the construction is carried out in time by adopting an in-hole grouting reinforcement method.
In the processes of drilling the guide hole and back reaming in the step 2) and the step 3), drilling fluid is added, and the components of the drilling fluid comprise, by weight, 20% of bentonite, 1% of commercially available drilling fluid, 0.4% of caustic soda and the balance of water. When the original soil in the hole is crushed by reaming, the soil in the hole is stirred to form plastic slurry, and a smooth layer of wall protection mud skin is formed on the hole wall by means of extrusion of machines and tools during hole cleaning so as to balance the rock fixing pressure in the hole channel and finally form a stable and smooth pipe installing channel.
The grouting component in the step 7) consists of a liquid A and a liquid B, wherein the liquid A: liquid B = 3: 1; the solution A consists of water and cement, and the weight part ratio of the water to the cement is 0.75-1.5: 1; the liquid B comprises 35-40% of water glass, 2-3% of retarder and the balance of water. The grouting component can realize rapid pipeline reinforcement and avoid road surface collapse.
The two sides of the pore passage are provided with downward inclined sections, the outer end part of the inclined section at the inlet is provided with a working pit 1, the outer end part of the inclined section at the outlet is provided with a receiving pit 2, and the depths of the working pit 1 and the receiving pit 2 are smaller than the depth of the horizontal section; a plurality of pressure relief pits 3 are arranged at the horizontal section in the middle of the pore channel.

Claims (4)

1. A construction process of a sewage pipe network in a village and a town by using a horizontal directional drill is characterized by comprising the following steps:
1) determining a pore canal formed by an inclined line segment, a curve segment and a horizontal straight line segment of the track segment of the directional pore;
2) drilling a guide hole by using an arrow-type small drill bit with the outer diameter slightly larger than that of the drill rod, drilling the drill rod from the ground, receiving a message sent by a transmitter in the underground drill bit by a ground instrument, controlling the direction and the depth of the drill bit, and drilling the drill bit into an accurate positioning guide hole;
3) then, reversely expanding the soil back by using the guide hole, and only crushing the undisturbed soil in the designed hole diameter during expanding the soil back;
4) finally, cleaning out soil in the pore channel by utilizing hole cleaning equipment to form a pore channel for installing the pipe;
5) welding a pipeline: the pipeline is made of PE pipes and is welded in a hot melting mode;
6) after the pipeline is connected, the pipeline is uniformly and stably pulled, and clean water is injected into the pipeline from the tail of the pipeline in the pulling construction process, so that the self weight of the pipeline is increased, and the pipeline is prevented from floating upwards;
7) after the pipeline is pulled through, in order to avoid the collapse of the pavement, the construction is carried out in time by adopting an in-hole grouting reinforcement method.
2. The process of claim 1, wherein the horizontal directional drilling is carried out in a sewage pipe network in villages and towns, and the process comprises the following steps: in the processes of drilling the guide hole and back reaming in the step 2) and the step 3), drilling fluid is added, and the components of the drilling fluid comprise, by weight, 20% of bentonite, 1% of commercially available drilling fluid, 0.4% of caustic soda and the balance of water.
3. The process of claim 1, wherein the horizontal directional drilling is carried out in a sewage pipe network in villages and towns, and the process comprises the following steps: the grouting component in the step 7) consists of a liquid A and a liquid B, wherein the liquid A: liquid B = 3: 1; the solution A consists of water and cement, and the weight part ratio of the water to the cement is 0.75-1.5: 1; the liquid B comprises 35-40% of water glass, 2-3% of retarder and the balance of water.
4. The process of claim 1, wherein the horizontal directional drilling is carried out in a sewage pipe network in villages and towns, and the process comprises the following steps: the two sides of the pore passage are provided with downward inclined sections, the outer end part of the inclined section at the inlet is provided with a working pit (1), the outer end part of the inclined section at the outlet is provided with a receiving pit (2), and the depths of the working pit (1) and the receiving pit (2) are smaller than the depth of the horizontal section; a plurality of pressure relief pits (3) are arranged at the horizontal section in the middle of the pore channel.
CN201911271295.5A 2019-12-12 2019-12-12 Construction process of sewage pipe network in villages and towns by horizontal directional drilling Pending CN110847325A (en)

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CN201911271295.5A CN110847325A (en) 2019-12-12 2019-12-12 Construction process of sewage pipe network in villages and towns by horizontal directional drilling

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CN201911271295.5A CN110847325A (en) 2019-12-12 2019-12-12 Construction process of sewage pipe network in villages and towns by horizontal directional drilling

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112145791A (en) * 2020-08-12 2020-12-29 中国二十冶集团有限公司 Method for horizontally dragging and laying pipeline
CN112282022A (en) * 2020-09-15 2021-01-29 北京建工土木工程有限公司 Method for quickly constructing rain sewage inspection well on existing road
CN113236857A (en) * 2021-03-24 2021-08-10 北京恩菲环保股份有限公司 Pipeline connection method for preventing pulling-out leakage during directional drilling construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101457853A (en) * 2008-11-20 2009-06-17 江苏广宇建设集团有限公司 Non-digging tube-pulling construction method
CN102061933A (en) * 2010-12-13 2011-05-18 山西晋城无烟煤矿业集团有限责任公司 Long drilling positioning construction process
RU2429403C1 (en) * 2010-03-09 2011-09-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования Сибирский федеральный университет (СФУ) Installation for trenchless replacement of underground pipelines
CN102434716A (en) * 2011-09-26 2012-05-02 武汉地网非开挖科技有限公司 Flexible pipe assisted type pipeline returning method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101457853A (en) * 2008-11-20 2009-06-17 江苏广宇建设集团有限公司 Non-digging tube-pulling construction method
RU2429403C1 (en) * 2010-03-09 2011-09-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования Сибирский федеральный университет (СФУ) Installation for trenchless replacement of underground pipelines
CN102061933A (en) * 2010-12-13 2011-05-18 山西晋城无烟煤矿业集团有限责任公司 Long drilling positioning construction process
CN102434716A (en) * 2011-09-26 2012-05-02 武汉地网非开挖科技有限公司 Flexible pipe assisted type pipeline returning method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
乌效鸣等: "《钻井液与岩土工程浆材》", 31 July 2014 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112145791A (en) * 2020-08-12 2020-12-29 中国二十冶集团有限公司 Method for horizontally dragging and laying pipeline
CN112282022A (en) * 2020-09-15 2021-01-29 北京建工土木工程有限公司 Method for quickly constructing rain sewage inspection well on existing road
CN113236857A (en) * 2021-03-24 2021-08-10 北京恩菲环保股份有限公司 Pipeline connection method for preventing pulling-out leakage during directional drilling construction

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Application publication date: 20200228

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