Advanced drilling system based on optimal theoretical hole arrangement scheme and working method
A technology of advanced drilling and hole layout, which is applied in the direction of earthwork drilling, mining equipment, tunnels, etc., and can solve the problems of heavy tool load, low speed of shield tunneling and TBM excavation, and easy failure and damage of shield tunneling tunnel and TBM equipment, etc. question
Pending Publication Date: 2019-10-08
CCCC TUNNEL ENG +2
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Problems solved by technology
[0005] When the unexcavated ground in front of the tunnel face is hard and has a high degree of integrity, the speed of shield tunneling and TBM tunneling is low, the load on the cutter is large, and shield tunneling and TBM equipment are prone to failure and damage
Method used
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Embodiment Construction
[0108] Steps 1 to 6 complete the process of statistically calculating from the test data and determining the optimal theoretical hole layout scheme in the tunnel section according to the actual situation on site.
[0109] Steps 7 to 11 are the transformation of the existing parts of the shield machine in the advanced drilling system and the design and installation method of the working system of the advanced drilling rig. The existing parts of the shield machine after transformation and the working system of the advanced drilling rig form the advanced drilling system.
[0110] Step 12 to step 18 are the workflow of the advanced drilling system.
[0111] The specific description is as follows:
[0112] step one
[0113] Determine the formation information of the tunnel face within the excavation range of the shield machine.
[0114] According to the on-site sampling results, determine the face type of the shield machine, that is, the stratum information of the excavation cro...
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The invention relates to an advanced drilling system based on an optimal theoretical hole arrangement scheme and a working method, and belongs to the technical field of shield advanced geological drilling. The working method comprises the optimal theoretical hole arrangement scheme in a tunnel section, a design and installation method of existing part transformation and an advanced drilling machine working system of a shield tunneling machine and a working process of the advanced drilling system, wherein the optimal theoretical hole arrangement scheme is determined through statistics and calculation of test data and according to actual conditions of a site. By means of the method, the integrity of a rock mass in front of a cutter head can be destroyed by manufacturing a free face in a working face through advanced drilling under the condition that formation conditions are complex and changeable in the shield tunneling process, and it is ensured that the overall efficiency of advanced drilling and shield tunneling is maximum. The system and the working method are based on engineering investigation data, the method is reasonable, clear in step and high in feasibility, the working efficiency of shield tunneling of a hard composite stratum can be improved, and important theoretical innovation and engineering practicability are achieved.
Description
technical field [0001] The invention belongs to the technical field of shield advanced geological drilling, and in particular relates to an advanced drilling system and working method based on an optimal theoretical hole layout scheme. Background technique [0002] In the process of tunnel construction using the shield method and TBM, it is often encountered that the stratum in front of the face is unknown. At this time, the drilling rig is used to sample the unexcavated stratum in front of the cutterhead to understand the stratum intuitively. The existing Advanced geological drilling rigs are divided into fixed and adjustable drilling positions. [0003] Fixed advanced drilling can only be drilled at a fixed position on the excavation surface, and the drilling position cannot be changed, and it is only used for stratum sampling and analysis. [0004] There are generally two types of existing adjustable advanced drilling drilling layout methods, one is based on the position...
Claims
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Login to View More IPC IPC(8): E21D9/087E21D9/06
CPCE21D9/087E21D9/0642
Inventor 王建军张世豪李彤韩爱民陈冬陈冲郝保安郑新亮石春马欣生刘禹王金铭李闯施烨辉程荷兰李璇翟维骏张心远
Owner CCCC TUNNEL ENG