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Method for controlling roadway floor heave and floor rock burst by using parallel-row pile foundations

A technology of rock burst and bottom plate, which is applied in tunnels, sheet pile walls, tunnel linings, etc., to achieve the effects of low treatment cost, guaranteed pressure resistance effect, and simple process

Pending Publication Date: 2018-11-06
TIANDI SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the technical problem of effectively controlling roadway bottom heave and bottom slab rock burst, the present invention provides a method for controlling roadway bottom heave and bottom slab rock burst by using row pile foundations

Method used

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  • Method for controlling roadway floor heave and floor rock burst by using parallel-row pile foundations
  • Method for controlling roadway floor heave and floor rock burst by using parallel-row pile foundations

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] figure 1 with 2 What is shown is a preferred embodiment of the method of the present invention for controlling roadway bottom drum and bottom plate rock burst by using row pile foundations.

[0030] The method for controlling roadway bottom heave and bottom slab rockburst by using row pile foundations comprises the following steps:

[0031] (a) In the development, preparation or recovery roadway, construct a large-diameter borehole 301 at the two bottom corners of the roadway 1 to the bottom plate 2 according to the depression angle α, the depression angle α is 48°, and the diameter of the large-diameter borehole 301 is not less than 200mm , arranged at a certain distance 1 along the direction of the roadway 1, and the depth o...

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Abstract

The invention discloses a method for controlling roadway floor heave and floor rock burst by using parallel-row pile foundations. The method comprises the steps that (a) large-diameter drill holes areconstructed from two bottom angles of a roadway to a bottom plate in accordance with a pitching angle alpha and arranged at certain-distance intervals in the strike direction of the roadway; (b) a high-strength grouting pile is laid in each large-diameter drill hole; and (c) concrete grout is poured into each high-strength grouting pile as well as gaps between the high-strength grouting piles andthe large-diameter drill holes, and thus the parallel-row pile foundations are formed. According to the method for controlling the roadway floor heave and the floor rock burst by using the parallel-row pile foundations, the roadway floor heave and the floor rock burst can be controlled effectively.

Description

technical field [0001] The invention relates to a method for treating roadway bottom heave and floor impact ground pressure by using row pile foundations. Background technique [0002] Underground coal mine development, preparation or mining roadways under deep or high structural stress fields often have floor heaves, or floor bursts. A large number of floor drums lead to frequent overhaul of the roadway, which greatly increases the maintenance cost of the roadway; the rock burst of the floor will cause equipment damage and casualties, which seriously threatens the safe production of the mine. At present, there is no effective method for controlling roadway bottom heave and bottom slab rockburst. Contents of the invention [0003] In order to solve the technical problem of effectively controlling roadway floor heave and floor burst, the invention provides a method for controlling roadway floor heave and floor burst by using row pile foundations. [0004] The technical sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21F17/18E02D5/36E02D27/12
CPCE21D11/00E21F17/18E02D5/36E02D27/12
Inventor 潘俊锋刘少虹王书文夏永学秦子晗
Owner TIANDI SCI & TECH CO LTD
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