阅读说明：本技术 针对桩基础施工与地下管线冲突的处理方法 (Processing method for conflict between pile foundation construction and underground pipeline ) 是由 李海利 郭慧栋 王越 滕博 李树茂 孙占林 戴公强 赵月 顾春雨 白鹏鹏 李雪 于 2021-10-22 设计创作，主要内容包括：本发明公开了针对桩基础施工与地下管线冲突的处理方法,涉及地下管线施工技术领域。本发明包括以下步骤：打入钢护筒：将钢护筒套进行埋设,直至到达废管的顶部；废管破除：采用旋挖钻对废管进行破除；填实：对护筒内部进行回填并压实工作；拔除钢护筒；进行桩基施工工作。本发明通过打入钢护筒-废管破除-填实-拔除钢护筒-桩基施工的步骤设置,使得发明相比较于现有技术而言,可以做到管线回填密实情况可以很方便的进行验证,使得工程质量相对容易保证,能有效防止对后续桩基施工产生不良影响。(The invention discloses a method for processing conflict between pile foundation construction and an underground pipeline, and relates to the technical field of underground pipeline construction. The invention comprises the following steps: driving into a steel casing: embedding the steel casing sleeve until the steel casing sleeve reaches the top of the waste pipe; and (3) breaking waste pipes: adopting a rotary drilling rig to break the waste pipe; filling: backfilling the inside of the protection cylinder and compacting; removing the steel casing; and carrying out pile foundation construction work. Compared with the prior art, the method has the advantages that the steel casing is driven, the waste pipe is broken, the steel casing is filled, the steel casing is pulled out, and the pile foundation construction is performed, so that the dense condition of the pipeline backfill can be verified conveniently, the engineering quality is relatively easy to guarantee, and the adverse effect on the subsequent pile foundation construction can be effectively prevented.)

1. The processing method aiming at the conflict between the pile foundation construction and the underground pipeline is characterized by comprising the following steps of: the method comprises the following steps:

driving into a steel casing: embedding the steel casing sleeve until the steel casing sleeve reaches the top of the waste pipe;

and (3) breaking waste pipes: adopting a rotary drilling rig to break the waste pipe;

filling: backfilling the inside of the protection cylinder and compacting;

removing the steel casing;

and carrying out pile foundation construction work.

2. The method for processing the conflict between the pile foundation construction and the underground pipeline according to claim 1, wherein: the steel casing is made of rolled steel plates with the wall thickness of 2 cm.

3. The method for processing the conflict between the pile foundation construction and the underground pipeline according to claim 1, wherein: the diameter of the steel casing is equal to the diameter of the pile foundation plus 0.5 m.

4. The method for processing the conflict between the pile foundation construction and the underground pipeline according to claim 1, wherein: wherein, bury the steel casing cover underground, bury underground for adopting the vibration pile hammer to carry out the hammering mode.

5. The method for processing the conflict between the pile foundation construction and the underground pipeline according to claim 1, wherein: wherein, before the step of filling clay or mortar, the method also comprises the following steps:

and adjusting the position of the steel casing to reach the top position of the waste pipe.

6. The method for processing the conflict between the pile foundation construction and the underground pipeline according to claim 1, wherein: and the backfilling is carried out by adopting mortar or clay.

7. The method for processing the conflict between the pile foundation construction and the underground pipeline according to claim 1, wherein: the backfill part is formed by externally placing 20cm steel casing, and the backfill length of the pipeline at each pile is 1.9 m.

Technical Field

The invention belongs to the technical field of underground pipeline construction, and particularly relates to a method for processing conflict between pile foundation construction and an underground pipeline.

Background

In the existing pipeline construction under the ground, the existing rainwater and sewage pipelines along the line bridge foundation may form occupation conflict, in this case, the design scheme is to move the pipeline to a new line position and then complete the foundation construction, and the existing pipeline removal scheme on the site is to dispose the in-situ pipeline according to waste. Existing underpass laying pipelines include: rainwater, sewage, gas, water supply, communication and other underground pipelines, wherein the rainwater and sewage pipelines conflict with the pile foundation in an occupying mode, and the rainwater and sewage pipelines are buried in a depth range of 2.6-8.5 m below the ground.

After the pipeline is moved and changed, the original underground pipeline is not cleared, so that certain difficulty is caused in the implementation of the cast-in-situ bored pile. For the waste gas pipeline, the existing construction from the new construction point of view adopts a pipeline excavating scheme and a pipeline backfilling scheme: for the pipeline excavation scheme, the cost of excavation is higher than the cost of the pipeline due to the fact that the pipeline is deeply buried; for the pipeline backfilling scheme, cement mortar is adopted to plug the pipeline, two sides of each pipe need to be plugged, if the interval length is long, the plugging and the pouring are performed in sections, the construction period is prolonged by about 2-3 months, the dense condition of the pipeline backfilling cannot be verified, and adverse effects on subsequent pile foundation construction are possibly caused.

Therefore, the invention develops a method for processing conflict between pile foundation construction and underground pipelines.

Disclosure of Invention

The invention aims to provide a method for processing conflict between pile foundation construction and underground pipelines, which solves the existing problems: the dense condition of pipeline backfill in the existing pipeline backfill scheme cannot be verified, and adverse effects on subsequent pile foundation construction can be possibly caused.

In order to solve the technical problems, the invention is realized by the following technical scheme: a method for handling conflicts between pile foundation construction and underground pipelines, the method comprising the steps of:

driving into a steel casing: embedding the steel casing sleeve until the steel casing sleeve reaches the top of the waste pipe;

and (3) breaking waste pipes: adopting a rotary drilling rig to break the waste pipe;

filling: backfilling the inside of the protection cylinder and compacting;

removing the steel casing;

and carrying out pile foundation construction work.

Further preferred is: the steel casing is made of rolled steel plates with the wall thickness of 2 cm.

Further preferred is: the diameter of the steel casing is equal to the diameter of the pile foundation plus 0.5 m.

Further preferred is: wherein, bury the steel casing cover underground, bury underground for adopting the vibration pile hammer to carry out the hammering mode.

Further preferred is: wherein, before the step of filling clay or mortar, the method also comprises the following steps:

and adjusting the position of the steel casing to reach the top position of the waste pipe.

Further preferred is: and the backfilling is carried out by adopting mortar or clay.

Further preferred is: the backfill part is formed by externally placing 20cm steel casing, and the backfill length of the pipeline at each pile is 1.9 m.

The invention has the following beneficial effects:

compared with the prior art, the method has the advantages that the steel casing is driven, the waste pipe is broken, the steel casing is filled, the steel casing is pulled out, and the pile foundation construction is performed, so that the dense condition of the pipeline backfill can be verified conveniently, the engineering quality is relatively easy to guarantee, and the adverse effect on the subsequent pile foundation construction can be effectively prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic flow diagram of the process of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the method for handling a conflict between pile foundation construction and an underground pipeline of the present invention specifically includes the following steps:

s1: driven steel casing

The selected steel casing is made by rolling a steel plate with the wall thickness of 2cm, wherein the pile foundation with the diameter of 1-2 m is made of the steel casing with the diameter of 1.5m, and the pile foundation with the diameter of 1.5m is made of the steel casing with the diameter of 1.8 m. That is, the diameter of the steel casing should be equal to the pile foundation plus 0.5m

Burying the steel casing until reaching the top of the waste pipe, and hammering by using a vibration pile hammer in the burying process.

S2: waste pipe breaking

The rotary drilling rig is adopted to break the waste pipe, and the steel casing can possibly fall to the bottom of the waste pipe along with the waste pipe breaking process.

S3: clay or mortar filling

Firstly, adjusting the position of a steel casing to enable the steel casing to reach the top position of a waste pipe;

and then, backfilling the interior of the pile casing and compacting, wherein mortar or clay can be adopted for backfilling, the backfilling part is about 20cm outside the steel pile casing by taking a 1.2-meter pile foundation as an example, and the backfilling length of a pipeline at each pile position is about 1.9 m.

S4: steel pulling-out protective cylinder

S5: and (5) pile foundation construction.

After the steel casing is pulled out, the pile foundation construction can be carried out after the pipeline is plugged for the full age.

Compared with the prior art, the invention has the advantages that the dense condition of the pipeline backfill can be conveniently verified, so that the engineering quality is relatively easy to ensure, and the adverse effect on the subsequent pile foundation construction can be effectively prevented.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.