Coring and grouting construction method in underground obstacle removing construction
By adopting the core grouting construction method in deep underground cleaning construction, the problems of hole collapse caused by many equipment, complex operation, long time and abnormal grouting of the barrier cleaning holes in the existing technology are solved, and the construction efficiency and safety are improved.
Patent Information
- Application Number
- CN202311609997.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-29
- Publication Date
- 2025-04-18
AI Technical Summary
In deep underground cleaning construction, the existing technology has many equipment, complex operation, and long time-consuming, and the damage holes are not synchronously grouted and easily collapsed, affecting construction safety and efficiency.
The core grouting construction method is adopted, and the grouting equipment is installed through drilling operations. The casing drilling rig is in place to extract soil into holes. The core cleaning drilling tool is used for the barrier cleaning operation, and grouting is carried out simultaneously during the retraction process to ensure that the grouting liquid exits the barrier cleaning hole after initially condenses.
It improves construction efficiency and economic benefits, avoids hole collapse accidents after mechanical core extraction, and ensures the safety and smooth development of construction.
Smart Images
Figure CN119844032A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, and in particular to a coring and grouting construction method in underground obstacle removal construction. Background Art
[0002] At present, in deep underground obstacle removal construction, it is necessary to remove the cleared obstacles, then backfill, and then repeat the steps of clearing obstacles, removing obstacles, and backfilling. At present, in this process, the equipment and methods used are as follows: first drill, then remove the drilling equipment, then put the core filling equipment in for core filling, then take out the core filling equipment, and lower the drilling equipment again for drilling operations, and perform cyclic operations. In this construction process, many equipment are used, the operation process is relatively complicated, time-consuming, and the labor and economic benefits are poor. How to better improve work efficiency and economic benefits has become a problem that needs to be considered during the construction process. If the obstacle clearance hole is not grouted synchronously, it is easy to collapse when encountering bad geological conditions, resulting in the inability to carry out obstacle clearance operations. Summary of the invention
[0003] The purpose of the present invention is to provide a new coring and grouting method for underground obstacle removal construction to solve the problems raised in the above-mentioned background technology and improve work efficiency and economic benefits.
[0004] To achieve the above object, the technical solution adopted by the present invention is: a coring and grouting construction method in underground obstacle removal construction, which specifically includes the following steps: S1: Grouting hole drilling operation: Use a drilling rig to perform drilling operations, the drilling depth reaches the designed obstacle clearance position, and the drilling verticality meets the principle of not damaging the steel cage; S2: Grouting equipment installation: After the drilling is completed, install the grouting pipe tooling and grouting equipment; S3: Obstacle-clearing drilling construction and equipment installation: The casing drilling rig is in place, the steel casing is pressed into the working well, and the soil is taken out of the casing to form a hole. Then, the horizontal drilling equipment is hoisted and lowered to the designated position in the steel casing by a crane. The horizontal drilling equipment includes a coring and obstacle-clearing drilling tool; S4: Obstacle clearing operation: using the coring and obstacle clearing drill to perform obstacle clearing operation, when the coring and obstacle clearing drill passes through the obstacle, the cleared obstacle is placed in the coring and obstacle clearing drill; S5: Synchronous grouting operation: The coring and obstacle clearing drill tool is slowly retracted, and the grouting operation is started synchronously. The coring and obstacle clearing drill tool stays for a while before exiting the obstacle clearing hole, and the grouting is stopped at the same time. After the grouting liquid reaches the initial setting state, all the coring and obstacle clearing drill tools are withdrawn from the obstacle clearing hole; S6: Coring and clearing obstacles: Raise the coring and clearing drill tool to the ground and remove obstacles in the drill tool; S7: Secondary obstacle clearing drilling and grouting hole re-drilling: The steel casing is lifted to a certain height, and the horizontal drilling equipment is lowered to a designated position in the steel casing again. The coring obstacle clearing drill in the horizontal drilling equipment performs obstacle clearing operations until the coring obstacle clearing drill passes through the obstacle, and at the same time, the grouting hole is re-drilled on the ground. After the grouting hole is drilled, the grouting pipe tooling and the grouting equipment are connected and installed; S8: Repeat steps S5 to S7 until the row is cleared; S9: Move the casing drill horizontally to the next grid column position, repeat steps S3-S8, and complete the next grid column obstacle clearance until all grid obstacle clearances are completed.
[0005] Furthermore, the drilled holes in step S1 are grouting holes, and the grouting holes vertically pass through the ground-connected wall to the designated position of the obstacle, and the obstacle is grid-arranged.
[0006] The beneficial technical effects of the present invention are: ① The construction method of the present invention has the characteristics of strong operability, high construction efficiency, and relatively fast construction; ② The present invention uses synchronous grouting operations during the obstacle removal process to timely fill the core and plug it, thereby avoiding the occurrence of hole collapse accidents after mechanical coring and obstacle removal, and ensuring the safety of the construction work and the smooth progress of the construction. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0008] Figure 1 It is the construction flow chart of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention during construction; Figure 3 It is a cross-sectional schematic diagram of the grouting operation of the present invention; Figure 4 It is a schematic diagram of the grouting holes and mechanical obstacle removal positions of the present invention.
[0009] Among them: 1 grouting equipment, 2 grouting holes, 3 ground-connected walls, 4 grid construction, 5 mechanical clearance well sites, 6 pipe sinking / extraction equipment, 7 casing drilling rigs, 8 steel casing, 9 horizontal drilling equipment. Implementation
[0010] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example
[0011] like Figure 1 to Figure 4 As shown, a coring and grouting construction method in underground obstacle removal construction specifically includes the following steps: S1: Grouting hole drilling operation: Use a drilling rig to perform drilling operations, the drilling depth reaches the designed obstacle clearance position, and the drilling verticality meets the principle of not damaging the steel cage; S2: Grouting equipment installation: After the drilling is completed, install the grouting pipe tooling and grouting equipment; S3: Obstacle-clearing drilling construction and equipment installation: The casing drilling rig is in place, the steel casing is pressed into the working well, and the soil is taken out of the casing to form a hole. Then, the horizontal drilling equipment is hoisted and lowered to the designated position in the steel casing by a crane. The horizontal drilling equipment includes a coring and obstacle-clearing drilling tool; S4: Obstacle clearing operation: using the coring and obstacle clearing drill to perform obstacle clearing operation, when the coring and obstacle clearing drill passes through the obstacle, the cleared obstacle is placed in the coring and obstacle clearing drill; S5: Synchronous grouting operation: The coring and obstacle clearing drill tool is slowly retracted, and the grouting operation is started synchronously. The coring and obstacle clearing drill tool stays for a while before exiting the obstacle clearing hole, and the grouting is stopped at the same time. After the grouting liquid reaches the initial setting state, all the coring and obstacle clearing drill tools are withdrawn from the obstacle clearing hole; S6: Coring and clearing obstacles: Raise the coring and clearing drill tool to the ground and remove obstacles in the drill tool; S7: Secondary obstacle clearing drilling and grouting hole re-drilling: The steel casing is lifted to a certain height, and the horizontal drilling equipment is lowered to a designated position in the steel casing again. The coring obstacle clearing drill in the horizontal drilling equipment performs obstacle clearing operations until the coring obstacle clearing drill passes through the obstacle, and at the same time, the grouting hole is re-drilled on the ground. After the grouting hole is drilled, the grouting pipe tooling and the grouting equipment are connected and installed; S8: Repeat steps S5 to S7 until the row is cleared; S9: Move the casing drill horizontally to the next grid column position, repeat steps S3-S8, and complete the next grid column obstacle clearance until all grid obstacle clearances are completed.
[0012] In the above embodiment, the drilled hole in step S1 is a grouting hole, and the grouting hole vertically passes through the ground-connected wall to the specified position of the obstacle, and the obstacle is grid-arranged. The grouting slurry in step S5 is conventionally double slurry.
[0013] For the horizontal drilling equipment and coring and obstacle clearing equipment in the above-mentioned embodiments, please refer to the applicant's prior patent application: Rectangular steel casing vertical sinking pipe combined with horizontal drilling coring and obstacle clearing method, patent number 2023109412970.
[0014] The construction method of the present invention has the characteristics of strong operability, high construction efficiency, etc., and the construction is relatively fast. During the obstacle removal process, the present invention performs synchronous grouting operations and timely core filling and plugging, thereby avoiding the occurrence of hole collapse accidents after mechanical coring and obstacle removal, and ensuring the safety of construction operations and the smooth progress of construction.
[0015] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A coring and grouting construction method in underground obstacle removal construction, characterized in that: The specific steps include: S1: Grouting hole drilling operation: Use a drilling rig to perform drilling operations, the drilling depth reaches the designed obstacle clearance position, and the drilling verticality meets the principle of not damaging the steel cage; S2: Grouting equipment installation: After the drilling is completed, install the grouting pipe tooling and grouting equipment; S3: Obstacle-clearing drilling construction and equipment installation: The casing drilling rig is in place, the steel casing is pressed into the working well, and the soil is taken out of the casing to form a hole. Then, the horizontal drilling equipment is hoisted and lowered to the designated position in the steel casing by a crane. The horizontal drilling equipment includes a coring and obstacle-clearing drilling tool; S4: Obstacle clearing operation: using the coring and obstacle clearing drill to perform obstacle clearing operation, when the coring and obstacle clearing drill passes through the obstacle, the cleared obstacle is placed in the coring and obstacle clearing drill; S5: Synchronous grouting operation: The coring and obstacle clearing drill tool is slowly retracted, and the grouting operation is started synchronously. The coring and obstacle clearing drill tool stays for a while before exiting the obstacle clearing hole, and the grouting is stopped at the same time. After the grouting liquid reaches the initial setting state, all the coring and obstacle clearing drill tools are withdrawn from the obstacle clearing hole; S6: Coring and clearing obstacles: Raise the coring and clearing drill tool to the ground and remove obstacles in the drill tool; S7: Secondary obstacle clearing drilling and grouting hole re-drilling: The steel casing is lifted to a certain height, and the horizontal drilling equipment is lowered to a designated position in the steel casing again. The coring obstacle clearing drill in the horizontal drilling equipment performs obstacle clearing operations until the coring obstacle clearing drill passes through the obstacle, and at the same time, the grouting hole is re-drilled on the ground. After the grouting hole is drilled, the grouting pipe tooling and the grouting equipment are connected and installed; S8: Repeat steps S5 to S7 until the row is cleared; S9: Move the casing drill horizontally to the next grid column position, repeat steps S3-S8, and complete the next grid column obstacle clearance until all grid obstacle clearances are completed.
2. The coring and grouting construction method in underground obstacle removal construction according to claim 1 is characterized by: The drilled holes in step S1 are grouting holes, and the grouting holes vertically pass through the ground connection wall to the designated position of the obstacle, and the obstacle is gridded.