Typical case introduction
Case number one:
March 31, 2005 the old water hole popping Qin Qi Jinfeng Fluorite Mine flooded roadway, causing the accident eight people died.
First, the basic situation
The Karafeng jinfeng fluorite mine is a collective enterprise and is affiliated with the Economic Commission of the Royal Government of the Karachi Banner. The mine holds a mining license, business license, pyrotechnic product certificate, and no mine safety certification.
During the period of the Japanese and pseudo-Japanese era, the mine was discovered and mined, and named as dumbagou fluorite mine.
After the liberation, the mining area was taken over by the Inner Mongolia Fourth Prison and renamed as “Huahua Fluorite Mine in the Inner Mongolia Autonomous Regionâ€. It was mined until 1986 . Afterwards, the four prisons handed over the mining rights to the original Daxigou Township Economic and Trade Commission, and in 1991 they applied for the “License of Daxigou Fluorite Mine†at Karad Banner.
In September 2001, Atlantic Gou, the tile-roofed house village, Wang Yefu town after the merger, the mine was taken over by the current government Wang Yefu town.
The mine has 28 employees (both local migrant workers). The mine started preparatory work before production from January 2004, to repair the original four prison pioneering dumb ditch shaft and inclined shaft, and in 2004 August 22 from the 455 m level roadway excavation transport, up to a total of before the accident Tunneled more than 260 meters of roadway.
Second, the cause and nature of the accident
(I) Direct Cause
The rock mass above the middle third section of the mine and the rock body of the No. 3 mining area suddenly collapsed and fell into the mined-out area below the middle-third section, causing the water level of the gob area to rise sharply and quickly flow into the lane. As a result, the transport was completely submerged, and the operators in the transport lanes were either drowned or drowned by the impact.
(b) Indirect causes
1. Before the construction of the transportation lane, the company did not design, did not follow the map and map of the in-hole and downhole engineering, did not take the necessary safety measures, and the safety production investment was seriously insufficient;
2, September 30, 2003 to change the mining area (expanded from 0.1657 km2 to 0.987 km2) and January 20, 2005 corporate name change and expansion of production capacity (expanded from 02,000 tons / year to 05,000 tons / year ) In the case of changing the mining permit twice, the development and utilization plans and the implementation of safety measures have not been prepared in accordance with the requirements of the change procedures;
3. The mine did not establish and improve the safety production responsibility system, and did not organize the establishment of safety production rules and regulations and operating procedures, and did not organize the formulation of emergency rescue plans for safety accidents;
4. The order of mining in the mining area is chaotic. In the mining area where the Jinfeng Fluorite Mine acquired the mining rights, there are 9 individual mine owners illegally mining;
5. In accordance with the arrangement of the Autonomous Region and Chifeng Municipality on deepening the special rectification of non-coal mines, the Karachi Banner People’s Government formulated the “Special Regulation Plan for Deepening the Safety Production of Non-Coal Mines in Karachi Flag†in October 2004 , clearly marking the The Bureau of Supervision and the Bureau of Land and Resources carried out investigations on the non-coal mine gobs, and through investigations, “preventive measures were taken in time to avoid major lossesâ€. However, the relevant authorities did not seriously investigate and implement preventive measures on the mine’s goaf area.
(III) Nature of the accident
The accident was: a major accident of production safety responsibility.
Case 2:
June 3, 2009 Bayannao'er Wulateqianqi Dazhong Mining Limited Liability Company secretary ditch iron cage fourth wells fall well, three people were killed in the accident.
At 8:20 on June 3, 2009, Bayannao'er Wulateqianqi Dazhong Mining Co., Ltd., Inner Mongolia secretary ditch iron ore fourth wells occurred cage fall well accident, killing three people were killed and direct economic losses of 120 Ten thousand yuan.
First, the accident passed
Since the beginning of this year, it has been found during the inspection that the lifting of the No. 4 well has severely worn wire ropes, which is close to the standard for scrapping, and that the catcher wedge of the cage's anti-dropping device does not function properly and is in urgent need of replacement. There are also problems with the hydraulic system. No. well put forward plans to overhaul the company, well after the fourth overhaul plan approved by the company, wells decided to deploy fourth with nine machine repair team's eight staff members to complete the repair work from the mining team. On the afternoon of June 1st , deputy manager Zhou Fuyuan of Well No. 4 organized a total of 8 persons involved in maintenance work (including the team leader Zhang Zhengmao and mining team leader Zhang Jinhong) to hold a special meeting and learn relevant contents. After June 2 as early as 7:30, fourth wells machine repair classes before the team held a meeting, 8 o'clock began to replace the wire rope, first remove all the old rope, bring new rope through the sheave on the mast, and finally Two steel wire ropes are fixed on the drum of the winch, and at the same time, Xue Pei et al. arrange to remove the wedge wire rope connecting device and clean it to check if there is any crack. Due to the replacement of cages and skipping ropes, the old ropes were removed and then the wheels were finally wound onto the drums. The workload was heavy and it was not until 9 o'clock at night that the installation of two steel ropes at the end connected the cage and the wedge connection of the bucket. With the help of mining team workers, maintenance workers Zhang Gencheng, Xue Pei, Chen Libin and others first assembled the wire rope wedge connectors that connected the buckets, and assembled the wedge wire rope connectors that connected the cages. Xue Pei and Chen Libin will be overhauled. when the connector is detached from the inner ring acting peach tighten the top wire, all the installed connector are connected together slowly and skip cage, close all the connected about at 1:00 on June 3 Under the command of deputy manager Zhou Fuyuan and captain Zhang Zhengmao, several I-beams and old rails supporting cages and buckets at the wellhead were removed, and two no-load test runs were carried out to adjust the level of the ropes to reach 1220m . Location, after which maintenance personnel go home to rest. After at 7:00 on June 3 night how much to work, workers who delivered two trips to the ground with the installed cage. After June 3 at 8 o'clock in the morning to go to work, the first trip to the underground sent 13 people, came up empty, and the second trip down sent 13 people, take the cage when a worker came, the cage to stop the wellhead There are several workers pushing a flatbed into a cage (this flatbed is usually placed in a cage to reduce the starting current when the bucket is lifting the ore, and some mine wheels are welded to the floor to increase the weight). There were two crusher side plates, a drill head for drilling, and three 1.5 -inch steel pipes that were 2 meters long . After that, seven workers entered the tank to prepare for the well. Workers lay down safety cage tank tank Lianhou, Bellman not ring a bell, but their own cage slipped down a bit, signal workers thought it was hoist winch workers started running, stop playing hastily to wait for the bell to go down a few other people, and this Meanwhile captain Zhujin Hong mining between the wellhead to the sign, is also ready to go down, to see the cage move a little, and look Ropes connected to the head rope cage (with three wire bundled) slip occurs, quickly shouting " It's incredible ! Jump down." The workers in the cage heard the shouting. The first one that came out of the gap under the canopy was Liu Min, and two more workers drilled out. When the fourth worker clocked out the gold, the top of the cage had fallen to About 30 centimeters above the ground surface , he grabbed the track on the wellhead with both hands. At this time, the falling canopy caught the lamppost behind him. Zhu Jinhong caught him on the shoulder and back at once and picked him up. , then heard rope "pop" sound a bit too late to escape the cage three cans will immediately fall into the cage rapidly 297m deep bottom, this time about 8:20 in the morning. Just a few seconds before and after the first person stepped out of the sink, the man at the wellhead was stunned and reported to the company in a hurry. After hearing the news, Dazhong Company quickly organized personnel to carry out rescue operations. After cooperating with the relevant departments that arrived afterwards, it formulated a rescue plan and established corresponding rescue teams, emergency rescue teams, medical rescue teams, and logistics support groups. there are more than 20 people deep underground rescue, with the help of Bayannao'er mine rescue team ten o'clock in the evening the three victims rescued wellhead, have been confirmed dead, the families of the victims agreed to the dead by the emergency rescue vehicles rushed to the front black Flag hospital.
Second, the cause of the accident
(I) Direct Cause
In the process of replacing the wire rope, due to the lack of understanding and mastery of the structural principle of the wedge wire rope connection device, especially the function and effect of the top wire of the wedge wire rope connection device, it is erroneously assumed that the tighter and more secure the screw wire, resulting in the The top wire, which is removed from the peach-shaped ring during inspection, will cover the peach-shaped ring that has just been placed in the new wire rope. The wire rope in the ring cannot be brought into close contact with the wedge-shaped groove and the new wire rope in the peach-shaped ring cannot be locked. , lost its due role. At the same time, in accordance with the requirements of the "Safety Regulations for Metals and Non-Metallic Mines," "single rope lifting, when the rope is connected with the lifting container with a peach-shaped ring, the steel rope is pierced from the straight side of the peach-shaped ring, and not less than The five rope cards and the first rope are tight, and the actual situation is that the connection between the tail rope and the first rope is only three wires instead of the rope card. This is the direct cause of the accident.
(b) Indirect causes
No. 1 and No. 4 well management personnel knew that the accessories of the cage anti-dropping device were worn out and could not play a role. The repair could not be repaired because the accessories had not been purchased back. The anti-dropping device did not work after the wire rope had just been replaced. The management measures (such as the prohibition of passengers, etc.) directly promote personnel and materials, eventually resulting in the fall of the wire rope and the fall of the cage after the bottom of the well to cause the accident of three workers.
2. Although No. 4 well has found that the wedge of the anti-dropping device has been worn and can not function as anti-dropping, it also listed the procurement plan twice and marked emergency materials. It was reported to the company's supply department for procurement, and the supply department also arranged procurement. The staff carried out the procurement, but due to the complicated procurement procedures, the staff members did not purchase the accessories when the incident occurred. As a result, the fall arrester did not play an anti-dropping role in the event of an accident.
3. The overhaul work, although the maintenance plan and safety technical measures were formulated, also submitted to the company for approval, requiring that “the inspection and repair of all maintenance items must be carried out with no-load and load trial operation...†but the maintenance personnel repeatedly performed the replacement of cage wire ropes. Several times of no-load operation to adjust the wire rope on the reel, there is no load running test, and at the same time, the technical measures for the replacement of wire rope safety are not specified. The specific requirements during the test run and the methods for examination and acceptance are not elaborated. After the wire rope replacement, only a simple no-load is done. Trial operation will be put into normal use, resulting in the accident hidden dangers after the replacement of the steel wire could not be found in time.
4 , safety education, technical training is not in place, resulting in low safety awareness of maintenance personnel, poor safety operation skills, did not really understand the structure and principles of safety equipment and equipment, demolition and installation of technical requirements, resulting in the process of replacing the wire rope, misunderstanding The role of the top wire buried potential accidents.
5. The rules and regulations were not enforced strictly. The signal workers knew that the mixing of cages and containers was a violation of the operating procedures. However, they could not be stopped in time, causing the cages to hold both materials and passengers. In the event of an accident, they affected personnel to escape in time. Storage also exacerbated the cage load, exacerbating the consequences of the accident.
6. The safety management is not in place. The company's management personnel frequently change. Some safety management personnel did not obtain the safety management qualification certificate before they took up posts. Special operators in key positions engaged in special operations (such as signal workers and winches) without obtaining job operation qualification certificates. Workers, etc.)
7. The rules and regulations and operating procedures are not implemented properly, and there are loopholes in safety management. Dazhong Company suffered from two consecutive accidents in less than one month , resulting in four deaths. It revealed that there are serious problems in the implementation of rules and regulations, operations in accordance with operating procedures, and so on.
Third, accident prevention measures
(1) Seriously absorb lessons learned from accidents, strengthen safety education for employees, improve operational safety awareness and operational skills of operators, and carry out targeted special job safety education and technical training in combination with actual conditions so that employees can truly grasp substantive safety. Knowledge and business skills.
(2) Personnel involved in safety management and special operations throughout the company are required to conduct safety training in accordance with the law and obtain safety management qualification certificates and special operation certificates before taking up posts.
(3) Putting an end to habitual violations, in particular, strictly prohibiting the mixing of people and goods in cages, strictly observing the labor discipline in production, and observing safety procedures.
(D) increase the safety investment, in the future, when it comes to safety facilities, equipment, the purchase can not be slow, the premise of failure to ensure safety, must take appropriate measures to eliminate risky operations.
(5) To thoroughly investigate the hidden dangers of accidents, timely rectify the unsafe factors existing in production, and completely eliminate potential accidents.
(6) Intensify safety inspections, establish and improve safety inspection posts, and eliminate missed or missed records.
(7) The overhaul work should be formulated in detail, and related personnel should be strictly examined.
(8) Strictly abide by the “Safety Regulations for Metal-Non-Metallic Minesâ€, earnestly implement the rules, regulations and operating procedures of enterprises, and plug production safety loopholes.
Case 3:
January 16, 2007 Donghe District of Baotou City, Hao Lai ditch iron ore flooding, causing the accident 29 people died.
Around the 16th of January 22, 2007, Donghe District of Baotou City, Hao Lai ditch iron ore flooding accident occurred, resulting in 29 deaths and direct economic losses of 14.2 million yuan.
First, the accident passed
2007 at 11:00 p.m. on January 16 o'clock, mine attendant Liu Jianjun, while No. 7 Well inspections, to another mine Gao Jianguo from the duty room attendant phone call to say, just speak of Inclined Shaft # 1 underground Reported that there was something underground and Liu Jianjun returned to the duty room. Liu Jianjun returned to the duty room and asked if he had just drilled downhole, and Cao just said that the No. 1 inclined well had a piece of water. Liu Jianjun called Wang Jing, the person in charge of No. 1 shaft, and told him that the No. 1 inclined well was out of water, and he withdrew. At the same time, he also called Zhang Shucun, the deputy mine director on duty, and reported the situation. Zhang Shucun asked Liu Jianjun to check at the wellhead. Liu Jianjun went to No. 1 deviated well and asked what exactly the situation was in the borehole. He took a look at him without going down the well. He just said that the man had withdrawn, and he had no need to go down. The electricity also stopped. . Afterwards, Liu Jianjun called Zhang Shucun again and reported the situation. Zhang Shucun asked Liu Jianjun and another staff member of the evening to pick up the winter to the No. 1 shaft. At this time, Wang Jing called Liu Jianjun and said, No. 1 shaft water could not be drained. , Liu Jianjun Wang Jing quickly to let people withdraw up.), Wu Jianjun and winter to meet halfway No. 1 shaft No. 1 shaft Contractors Chiang down school, traveling to three No. 1 shaft, the time is about 23:30 Liu Jianjun asked to withdraw as soon as possible. At this time, the hoist was not up. Xiao Dong called Zhang Shucun again and said that the underground roadway was flooded and call the company as soon as possible. Later, Liu Jianjun and Qi Dong rushed to the No. 2 shaft. (In the middle of the rush to No. 2 shaft, Gao Jianguo called Liu Jianjun and said No. 3 shaft was flooded.) The workers also said that the well was flooded. Liu Jianjun and Qi Dong then returned to the Ministry of Mines and reported the situation to Cao Shihu, the legal representative of China Mining Limited Company. At this point of time is about at 23:40 on January 16, 1, 2, 3, all the underground tunnel shaft was flooded mud and water, mine personnel can not withdraw, 35 miners were trapped underground. Zhang kept on duty deputy mine shaft about 1 arrived at 23:40, so at the site of Liu Chao (Liu Yuzhi's son) notify beyond Group Co., Ltd. Chairman Liu Yuzhi. 4:17 days, Zhang deposit arrangement No. 3 inclined person in charge Xushang Lin started to play drift, are trapped underground rescue.
After the accident, leaders of the Baotou Municipal Party Committee, the government’s main leaders, and related departments rushed to the scene in time to launch Baotou’s accident emergency plan for mine accidents, and formed emergency rescue organizations such as emergency rescue rescue teams and on-site command centers to formulate rescue plans and carry out rescue operations. jobs.
Leaders of the State and the Autonomous Region paid great attention to the accident. Premier Wen Jiabao made important instructions and requested Secretary-General Hua Jianmin to personally question the rescue work and coordinate the relevant departments to quickly mobilize rescue equipment . Party Secretary of the Autonomous Region Chu Bo and Chairman Yang Jing of the Autonomous Region People’s Government also made clear instructions on the rescue and rescue of the accident and made specific requests.
On the morning of the 17th , Yang Jing, chairman of the autonomous regional government, Zhao Shuanglian, vice chairman of the autonomous region, Mo Jiancheng, party secretary of the Baotou Municipal Party Committee, and Huercha, mayor of Baotou, were responsible for the relevant departments of the General Office of the Autonomous Regional Government, the State Administration of Work Safety Supervision, the Supervision Department, and the General Labor Union. People rushed to the scene of the accident and directed rescue work. On the afternoon of the 17th , Sun Huashan, deputy director of the State Administration of Work Safety, and the person in charge of the relevant department arrived at the scene of the accident to guide the accident rescue work. The National Rescue Center urgently transported special equipment such as special high-speed drilling rigs and transported it to the scene of the accident with a helicopter. China Gold Corporation Baotou 318 mining company, Inner Mongolia Armed Police Corps, Electric Power Group Corporation, Shenhua Group, China Coal Corporation earth, Ge Yang Leng mine rescue brigade, Nuclear Corporation 208 geological team, Baotou Steel (Group) Company and Public Security, More than 2,000 people in firefighting and other units participated in accident rescue work.
11 am-18: 00 pm or so, China Gold Corporation Baotou 318 mining company, by taking the No. 3 Shaft crossheadings digging, clearing and pumping sludge discharge and other measures, successfully rescued six trapped miners.
20 am, each well was flooded again appeared sudden surge of mud, the No. 3 shaft more than 130 meters and 3 inclined drift transport more than 100 meters of roadway is full of silt silt, No. 2 shaft surface up 16 meters, and the more mud The more the pumping, the planned drilling of drilling rigs has also been flooded. The dredging work cannot be carried out. The surface collapse area has been expanded from 3,600 square meters to 7,000 square meters, and the collapse depth has increased from 20 meters to 30 meters. There is a tendency to continue to expand and res
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