Metal and nonmetal mine serious production safety accidents criteria (Trial)
1. Hidden dangers of major production safety accidents in metal non-metallic underground mines
(1) Safety exports do not meet national standards, industry standards or design requirements.
(2) Use equipment, materials and processes that are prohibited by the State.
(3) The wells of adjacent mines are interconnected.
(4) If the drawing is not completed in time, the current status map is seriously inconsistent with the actual situation.
(5) Open-pit mining to underground mining, the formation of the surface and the underground, and failing to take corresponding measures in accordance with the design requirements.
(6) The surface water system passes through the mining area and the water prevention measures are not taken in accordance with the design requirements.
(7) The drainage system does not conform to the design requirements, resulting in a decrease in drainage capacity.
(8) The elevation of the wellhead is below 1 m in the highest historical flood level in the local area, and no corresponding protective measures have been taken.
(9) The mines with medium hydrology and geological type are not equipped with special water prevention and control facilities, equipped with exploration and release water operation teams or equipped with special exploration and release water equipment.
(10) The setting of the waterproof door of the key roadway with complicated hydrogeological types is inconsistent with the design requirements.
(11) Mines that are at risk of spontaneous combustion are not fire-fighting measures in accordance with national standards, industry standards or designs.
(12) Excavation operations are carried out in areas where water inrush is threatened or in suspicious areas, and no water is being explored.
(13) Mines threatened by surface water inversion will not be suspended during heavy rainfall or floods upstream of the incoming water.
(14) The misalignment lines of adjacent mines overlap and no corresponding measures are taken according to the design requirements.
(15) When the wrong line is mined, it is stored in a resident village, or when important equipment and facilities exist, the corresponding measures are not taken in accordance with the design requirements.
(16) Unauthorized exploitation of various security pillars or their forms and parameters is inferior to the design value.
(17) The goafs formed by the production were not treated in accordance with the design requirements.
(18) It has serious pressure conditions and has not taken measures to prevent geophysical disasters.
(19) The roadway or the roof of the stope did not take support measures according to the design requirements.
(20) The mine does not establish a mechanical ventilation system according to the design requirements, or the wind speed, air volume and wind quality do not meet the requirements of national standards or industry standards.
(21) Portable gas detection alarms and self-rescuers with safety signs for mining products are not available.
(22) The safety protection devices such as the fall arrester and the car stop of the lifting system or the signal blocking measures are invalid; there is no regular test or inspection.
(23) The primary load is not powered by dual or dual power supplies, or a single power supply cannot meet all primary load requirements.
(24) Ground-to-down power supply transformers or ordinary transformers used underground are neutral grounded.
Second, metal non-metal open pit mine major production safety accidents
(1) Underground open-pit mining, no proven goaf or special safety technical measures for the goaf.
(2) Use equipment, materials and processes that are prohibited by the State.
(3) Mining is not carried out in a top-down, step-by-step or stratified manner.
(4) The working slope angle is larger than the design working angle, or the step (layering) height exceeds the design height.
(5) Unauthorized exploitation or destruction of pillars, rock pillars and hanging ore bodies retained by the design regulations.
(6) The stability of the stop slope and dumping site has not been assessed according to national standards or industry standards.
(7) On-line monitoring of slopes or dumps with a height of 200 m and above has not been carried out.
(8) The slip phenomenon exists on the slope.
(9) The slope of the uphill road is greater than 10% of the design slope.
(10) The open pit mines with a closed circle depth of 30 meters and above have not constructed flood control and flood discharge facilities in accordance with the design requirements.
(11) Perform blasting operations in thunderstorms.
(12) Dangerous dumping sites.
Third, the tailings warehouse major production safety accidents
(1) There are activities such as mining, excavation and blasting on the reservoir area and tailings dam that are not in accordance with the approved design plan.
(2) There is a penetrating transverse crack in the dam body, and a large range of piping and fluid deformation occurs, and the dam body shows signs of deep sliding.
(3) The slope ratio outside the dam is steeper than the design slope ratio.
(4) The dam body exceeds the design dam height, or the super design storage capacity stores the tailings.
(5) The rate of rise of the tailings accumulation dam is greater than the rate of design accumulation.
(6) Failure to evaluate the stability of the dam according to regulations, national standards or industry standards.
(7) The depth of the immersion line is less than the buried depth of the control immersion line.
(8) Safety super high and dry beach length are less than design regulations.
(9) The structure of the flood discharge system is seriously blocked or collapsed, resulting in a sharp drop in drainage capacity.
(10) The tailings, waste or waste water outside the design is put into storage.
(11) When the tailings with different ore properties are mixed and discharged, they are not discharged according to the design requirements.
(12) In the winter, the operation under the ice is not used according to the design requirements.
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