Grouting treatment method for underlying coal mine gob area along railway

A goaf and grouting technology, applied in mining equipment, earth-moving drilling, filling and other directions, can solve the problems of lack of systematic results, mature theory and engineering design system, lack of norms and regulations, etc. Overall performance, reducing hidden dangers of geological disasters, and ensuring social harmony and stability

Active Publication Date: 2018-07-03
LIAONING TECHNICAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regarding the governance of gobs under highways, the "Grouting Treatment Method for Highway Goafs" (Chinese Patent Publication No. CN 102330567 A, published on January 25, 2012) has been published, and the "Highway Goafs" has been formed. (Empty) Survey, Design and Construction Management Manual" (Edited by Shanxi Provincial Communications Department and China Communications Highway Survey and Design Engineering Co., Ltd., Pe

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  • Grouting treatment method for underlying coal mine gob area along railway
  • Grouting treatment method for underlying coal mine gob area along railway
  • Grouting treatment method for underlying coal mine gob area along railway

Examples

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Embodiment Construction

[0063] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0064] The grouting equipment and tools used in the following examples need to meet the following requirements:

[0065] (1) Drilling rig: The drilling rig should be selected according to the requirements of the goaf's rock formation structure, lithology, grouting hole or curtain hole structure, and slurry stop technology. Percussion drilling rigs or drilling tools without coring should not be used. Rotary drilling rigs and carbide drills with core pipes should be used.

[0066] (2) The speed and pulping capacity of the mixer should be compatible with the engineering quantity, type of slurry and performance of the grouting pump, and the slurry ...

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Abstract

The invention discloses a grouting treatment method for an underlying coal mine gob area along a railway. By virtue of reasonable design on drill hole arrangement, a drill hole construction method, agrouting mode, grouting parameters, grouting stopping of grouting holes, grouting construction sequence and grouting quality detection, and by virtue of a gob area grouting project, influence of deepformation mining on soil intensity of foundation of a shallow part is reduced, uneven settlement is reduced, and overall performance of foundation rock soil body is improved. Through treatment, potential geological hazards in a gob area are eliminated or reduced to the utmost extent, and safe railway operation and social harmony and stability are guaranteed.

Description

technical field [0001] The invention belongs to the field of goaf treatment methods, and in particular relates to a grouting treatment method for the goaf of an underlying coal mine along a railway. Background technique [0002] Over the years of coal mining in my country, a large number of goafs with different depths, areas, and even multi-levels have been formed or are being formed. The goaf is a very complex geological body, which has the characteristics of concealment, complexity, suddenness and long-term. With the rapid development of railway engineering construction, many railway projects cannot avoid going through coal mine goafs. The increase of railway transport capacity, the construction of double tracks, the impact of complex environments such as train dynamic loads and extreme rain and snow on the mined rock mass are more likely to cause surface deformation and goaf collapse, which affects the stability of the railway subgrade and threatens the safety of railway...

Claims

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Application Information

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IPC IPC(8): E21F15/00
CPCE21F15/00E21F15/005
Inventor 李喜林刘玲王来贵刘向峰肖明儒郝哲赵娜冯瑞
Owner LIAONING TECHNICAL UNIVERSITY
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