Method for forming holes in long and large anchor cables in karst region

A region and anchor cable technology, which is applied in drilling equipment and methods, earthwork drilling, drilling equipment, etc., can solve the problems affecting the construction progress of anchor cables, high cost of large karst caves, and long construction period, so as to speed up the efficiency of hole formation , save the construction period and ensure the quality of the hole

Inactive Publication Date: 2017-12-22
CCFEB CIVIL ENG
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

Under normal circumstances, the anchor cable reinforcement construction of the current slope is the key problem in the construction of the anchor cable hole. During the process of hole formation, drilling through karst caves, fault fracture zones, round gravel layers and other geology is prone to drill sticking, hole collapse, and hole formation. Slow efficiency and other problems seriously affect the progress of anchor cable construction
The existing treatment technology has the following disadvantages: slow pore forming efficiency, high cost of repeated consolidation grouting to treat large karst caves, and long construction period for repeated treatment

Method used

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Embodiment Construction

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation or a ...

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Abstract

The invention provides a method for forming holes in long and large anchor cables in a karst region, and relates to the field of construction of drilling. The method for forming holes in long and large anchor cables in the karst region comprises the following steps: step one, placing a drilling machine at a suitable position; step two, carrying out exposed drilling for the first time; step three, carrying out primary pipe-following construction; and step four, carrying out secondary exposed drilling. By the method for forming holes in long and large anchor cables in the karst region, the technical problem that existing anchor cable hole forming construction is low in hole forming efficiency, high in cost and long in working period is solved.

Description

Technical field [0001] The invention relates to the technical field of drilling construction, in particular to a method for forming a long anchor cable in a karst area. Background technique [0002] Prestressed anchor cable: drilled through the weak rock or sliding surface, anchor one end (anchor rod) in the hard rock (called the inner anchor head), and then stretch the other free end (called the outer anchor head) This method is called pre-stressed anchor cable, or anchor cable for short. It is widely used in China, such as the treatment of dangerous rock masses at Lianziya on the south bank of the Yangtze River and the treatment of landslides in Central Street in Huitong County. This kind of anchor rope is used. [0003] my country has a vast territory, complex topography and geological conditions, and extensive geological distribution areas such as karst caves and broken fault zones. Under normal circumstances, the anchor cable reinforcement construction for the current slope ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B7/04E02D5/74
CPCE21B7/00E02D5/74E21B7/04
Inventor 陈燚赵俊逸罗光财周伏良陈铁
Owner CCFEB CIVIL ENG
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