Goaf slip casting treatment method of road

A goaf and grouting technology, which is applied to mining equipment, earth square drilling, filling, etc., can solve the problems of uncommon application, difficult implementation, and long cycle

Inactive Publication Date: 2012-01-25
SHANXI TRAFFIC PLANNING PROSPECTING & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can intuitively and quantitatively evaluate the stable state of the goaf, and provide basic data for the survey and treatment design of the goaf; but the cycle is long, the implementation is difficult, and the application is not universal

Method used

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  • Goaf slip casting treatment method of road

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Experimental program
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Effect test

Embodiment Construction

[0030] (1) fixed point

[0031] The grouting hole shall be measured and set out on the spot with theodolite and tape measure, and the principle error of the actual position of the borehole shall not exceed 0.5m. Due to the impact of the terrain, when the borehole cannot be placed in the design position, it can be adjusted according to the specific situation with the approval of the design representative and engineering supervisor.

[0032] (2) Drilling and casing

[0033] Boreholes are constructed on the surface.

[0034] ① Open the hole with a φ127mm drill bit, drill to 6m of the complete bedrock, run in a φ114mm casing or welded pipe retaining wall, and then reduce the diameter to φ91mm. Follow-up pipe drilling is used in the drilling process of Quaternary eggs and gravel layers.

[0035] ② Use a φ89mm drill bit to drill to the subsidence and caving zone in the coal seam goaf or 1m below the coal seam floor.

[0036] (3) Pouring orifice pipe

[0037] The operation of po...

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Abstract

The invention relates to a goaf slip casting treatment method of a road, which comprises the following steps of: 1, determining a position of a slip casting hole; 2, drilling and running a casting; 3, pouring an orifice pipe; 4, mixing slurry; 5, slip-casting; and 6, stopping slip-casting. The slip casting treatment method is suitable for a goaf collapse region where overlying strata seriously collapse and slide or are understable or instable after being subjected to stability evaluation after an ore bed is explored.

Description

[0001] technical field [0002] The invention belongs to a goaf treatment method, in particular to a grouting treatment method for a highway goaf. Background technique [0003] At present, the commonly used treatment methods for gobs at home and abroad include the deployment of monitoring network monitoring, drilling, geophysical prospecting, excavation detection, and in-hole television. (1) Monitoring of the monitoring network. By arranging a suitable monitoring network to monitor the deformation of the goaf after treatment, the treatment effect of the goaf can be quantitatively evaluated. This method can intuitively and quantitatively evaluate the stable state of the goaf, and provide basic data for the survey and treatment design of the goaf; however, the cycle is long, the implementation is difficult, and the application is not common. (2) Drilling. After 6 months of goaf treatment, select a certain number of points, and use drilling and coring observation metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00
Inventor 田志忠孙雅洁窦随兵张明欣王亚伟崔兰
Owner SHANXI TRAFFIC PLANNING PROSPECTING & DESIGN INST
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