A curtain grouting process suitable for water plugging in underground mining of water-rich mines
A curtain grouting and mining technology, which is applied in wellbore lining, underground chambers, mining equipment, etc., can solve problems such as difficulty in adaptation, and achieve the effects of saving drainage costs, reducing mining risks, and reducing engineering investment.
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[0045] The present invention will be further described in detail below in conjunction with the drawings and embodiments.
[0046] by figure 1 Shown is a vertical projection diagram of a curtain grouting process suitable for water shutoff in underground mining in rich water mines and combined with figure 2 It can be seen that the roadway 2 is located below the water level 6, and the chambers 1 are arranged laterally along the roadway 2.
[0047] 1) Arrangement of upward water exploration and grouting holes: In each chamber 1, 6 water exploration and grouting holes are arranged 5°, 15° and 25° respectively, forming a borehole control network within 8m×8m. The design of exploration and injection drilling is based on the center of the chamber, 6 5° water exploration grouting holes 3, 6 15° water exploration grouting holes 4, and 6 25° water exploration grouting holes 5 are mutually staggered on the plane. Evenly arranged at 60°, and the hole depth is 50m. The 5°, 15° and 25° water pr...
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