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.
Active Publication Date: 2016-03-30
SINOSTEEL MAANSHAN INST OF MINING RES CO LTD +1
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Problems solved by technology
However, this curtain grouting water shutoff technology is difficult to adapt to the curtain grouting water shutoff of the ore body roof with developed karst fissures and strong water-rich deposits
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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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The invention discloses a curtain grouting process suitable for water-rich mine underground mining water plugging. According to the arrangement method of grouting holes, six grouting holes facing upwards by 5 degrees, six grouting holes facing upwards by 15 degrees and six grouting holes facing upwards by 25 degrees are formed in each chamber, the grouting holes facing upwards by 5 degrees, the six grouting holes facing upwards by 15 degrees and the six grouting holes facing upwards by 25 degrees are evenly distributed in the plane in a 60-degree staggered mode, and grouting holes facing downwards by -5 degrees, grouting holes facing downward by -30 degrees and grouting holes facing downwards by -60 degrees are formed outward in the chambers at the ends. According to the grouting process, bagged cement in a ground warehouse is transported to underground positions where grouting and leveling are needed, grouting is conducted through a working face temporary stirring station, a two-level pulp storage pond, a grouting pump, a grouting pipe and a hole opening high pressure device, grouting is completed after the designed final grouting pressure is reached, and the whole curtain grouting work is completed after further maintenance and hole cleaning. A grouting curtain with a high water plugging rate is set up underground for roof karst cracks, the water isolation function and the reinforcing function can be achieved, an ore body is safely and efficiently freed under protection of the grouting curtain, technical guarantees are provided for safe and efficient mining of the mine, project input is small, and the construction period is short.
Description
Technical field [0001] The invention relates to an underground mine water plugging engineering technology, in particular to an underground mine mining water plugging engineering technology under the conditions of developed karst cracks on the roof of an ore body and strong water-rich conditions, and is particularly suitable for aquifer karst cracks, karst caves, and water It is applied in water shutoff engineering for underground mines with abundant and relatively concentrated ore bodies. Background technique [0002] For mines with abundant groundwater, in order to ensure the safety of underground production, drainage is often required. The pumping of groundwater from the mine will inevitably produce a large area of precipitation funnel, which is easy to cause ground collapse and cause the groundwater level to drop, causing the spring water to stop flowing and the well to dry up. For example, the Shuikoushan lead-zinc mine, Fankou mine, and Siding lead-zinc iron mine have seri...
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IPC IPC(8): E21D11/10E21D11/38
Inventor 王运敏汪为平李何林范庆娄广文武飞汪绍元路洪斌李同鹏唐开元
Owner SINOSTEEL MAANSHAN INST OF MINING RES CO LTD
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