Case analysis of major meteorological disasters in mines

Meteorological disasters are objective facts that people cannot predict. However, the responsible persons at all levels of the mining enterprise can deal with all kinds of complicated meteorological disasters by learning lessons from the disasters that have already occurred and preparing for emergency meteorological disasters in various aspects. To this end, special cases of major meteorological disasters are listed below. A landslide 2008 August 1, Loufan County Jianshan iron mine in Shanxi due to multiple dump heavy rain runoff, leading to dump landslide collapse 8X10 ⁶ m ³ stone soil, resulting in workers and residents below the dump 45 people died. After the accident, the State Administration of Work Safety and Administration established an accident investigation team with Shanxi Province. The main reasons for the accident were: 1. The design of the slope angle of the dump site is unreasonable. 2. The flood discharge facilities of the dump site are not perfect. 3. Jianshan Iron Mine has poor management of the dumping site. 4. Improper measures to deal with landslides. II. Tailings Reservoir Breaking Dam On September 8, 2008, the tailings reservoir of Ta'ershan Iron Mine in Linqu County Xinyi Mining Co., Ltd. in Linyi City, Shanxi Province was caused by flash floods. The reservoir capacity exceeded the standard, resulting in major dam breaks and tailings sand loss. About 2 X 10 ⁶ m ³ , the flow length is 2 km, the maximum width is 300 m, and the mud area is 30.2 hectares, causing 277 deaths, 34 injuries, and 1047 people affected. After the dam-breaking accident, the party and the state attached great importance to it. The State Council promptly set up an accident investigation team to rush to the Shanxi incident site and conducted a number of investigations. It was agreed that the main reason for the dam break was: illegal production of the Ta'ershan iron mine and illegal production. The construction of the library, the investigation and management of hidden dangers have gone through the scene, the safety rectification instructions have not been implemented, and the supervision and management of the relevant departments of the local government is not effective. 3. The mine inundated the eastern open-pit mining workshop of Daye Iron Mine of Wuhan Iron and Steel Group in Hubei Province. On June 15, 1958, the mining began at the altitude of 264 m above sea level. On July 15, 1998, a 124m horizontal pit was mined. It has a vertical depth of 390 m, a width of 800 m and a length of 2500 m. At 6 o'clock in the morning, there was a sudden rainstorm. At 10 o'clock on the 16th, the rainfall was 510 mm, causing the surrounding mountain torrents to flow into the mine pit. The entire mining site was completely submerged, and 50 large-scale mining equipment were all immersed in the water. The water depth is up to 50 m. Daye Iron Mine has taken various measures to drain it, and received great assistance from the brother mines. After 10 days of hard work, the water in the pit was drained. However, after the equipment enters the water, many faults occur and must be eliminated. Due to various reasons such as the need for road and railway renovation, the mine was shut down for 15 days and the direct economic loss reached 15 million yuan. The causes of the accident are as follows: 1. The rainfall is too large. 2. The mine preparation for flood control is not sufficient. 3. The drainage ditch around the mining site is blocked. 4. inadequate drainage equipment. Four, Mine Flooding, 2003 at 21:40 on July 26, Zaozhuang city Tengzhou City, Shandong Province wood stone coal mine outside Tanabe 3208 exploration of coal roadway flooding accident occurred in large, resulting in 35 deaths, The direct economic loss is 2,586.9 million yuan. (1) Mine tomb situation There is an open pit in the mine field. The elevation of the ground is +60 m, the elevation of the bottom of the pit is +45 m, and there is a small amount of water in some areas of the ordinary pit. 2003 From June to July, the region experienced heavy rains with a rainfall of 411 mm. The accumulated water in the open pit increased to ¹ × ^{10 6} m ³ (2) The accident occurred at 21:40 on July 26, 2003. At the time of handover, a water seepage accident occurred in the cross-border area of ​​the 3208 coal-tracking roadway, resulting in 37 people in five operating locations below the mine-38 m level. After the accident, Zaozhuang, Tengzhou Municipal Committee and the municipal government quickly organized the ambulance team to rush to the scene for rescue. The Zaozhuang Mining Group Co., Ltd. rescue team arrived in time to support the ambulance. Two people escaped from danger and 35 miners were killed. (III) Causes of the accident 1. The direct cause is that the coal-stone coal mine violates the law and cross-border mining coal seam waterproof coal pillar. The 3208 working face is directly connected with the open pit pit bottom during the production process, resulting in the accumulation of water and sediment in the open pit. 2. Indirect causes (1) The Mushi coal mine ignores the national laws and regulations and violates the law and cross-border mining; in violation of the relevant provisions of the Coal Mine Safety Regulations, the coal seam waterproof coal pillars are exploited without authorization, in order to escape the supervision of the local government and relevant departments, the cross-border part is not crossed. The roadway was painted on the plan of the mining project, and even in the early stage of the rescue and disaster relief, no real drawings were provided to conceal the underground working place. (2) Mushi Coal Mine refused to implement the Tengzhou City Safety Production Committee Office “Emergency Notice on Doing a Good Job in Coal Mine Safety” (Tengan Office Order [2003] No. 3) About “When the rainstorm, all coal mines east of Jinpu Railway will immediately go underground The evacuation of personnel, to ensure the safety of the æ±›" requirements, knowing that the water in the exposed mine pit has a spray of 3208 working face is still cross-border mining.

Tablet Capsule Counting Machine

The capsule counting machine adopts electromagnet vibration effect, stable and reliable; Scientific design, simple, easy to use, small size, light weight, suitable for pharmaceutical, hospital, food and other industries, for capsules, tablets, particles and other drugs or food counting. This machine is small in size, light in weight, accurate in counting and easy to operate. The contact surface of counting items are made of stainless steel, which is an ideal special equipment for counting bottled, bagged and canned products in various industries.