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"Suddenly bang, the floor trembling, and white light flashing, I frighten shout!" 21 December night when 10 30 points, shaanxi ZiChangXian stability in west road dweller building; lady about two hours ago, that scene, still jittery.
This generates a lot of damage to the building
Fur the rubber friction produced great electrostatic is very strong
Fur the rubber friction produced great electrostatic can change the direction of the flow of fine
That night at 8 10 points, is apart from the xue lady about 50 meters away home satisfying the paradise small area, tower 2, 601 room this happen, a total of 6 building Windows different degree damage, the explosion killed three people were injured. According to professional survey analysis, suspected gas leak decorate after work this sweater by static electricity.
site
Just a propaganda, broken glass, fall down
Satisfying the paradise small area surveillance video shows, this happened in the evening of 21 at 8 10 minutes and 40 seconds. Two hours later reporters arrived at the scene, nearby residents have been evacuated, but the field has yet to clean up, chaos.
Walk into village, the broken glass creaky. A few families dweller building near the lights on, a family with a newspaper is sealed by the shattered Windows, the reporter approached, just a appeal, a piece of broken glass fall down from the sky and hit in 2 meters on the roof of, have BoLiCha splashed reporter shoes. Paste the gesture quickly said: "don't talk loudly, the scene there have been broken glass fall, talking out loud, the sound waves caused by fear will aggravate the glass fall."
The family name is xue, the house just decoration. The hostess said, just after 8 PM for a moment, is talk to somebody, you hear the bang, the "floor tremors, a BaiGuangShan once, the house just decoration is taste, so leave a window, I saw the white light even sew sewn into from the window in the house." Ms: pointing out the window, and the location of the experiment is 50 meters away a new completed 13 storeys of 6 layers.
Ms: in most people different degree window building damaged, the six building damaged window, even JieMianShang near the door of the store of seven small glass also damaged. A taxi driver, said exploded, the accident site about 1 km, frighten he quickly on the brakes.
reason
The valve didn't matter gas leaks
The most serious damage or explode 13 storeys.
22 morning, reporter, once again at satisfying the paradise small area building no. 2, about half the window glass is building shatter, building a side 1 to 9 balcony layer seriously damaged, some glass broke all, some supporting frame deformation serious. The ground broken glass is still not cleared. The police are still set, police on duty told reporters, enter the building there are still dangerous.
After the incident, ZiChangXian related department immediately organize the emergency rescue. Because building soon make a room, check in only a few households, most of the residents in the home is decorated, three wounded is also under construction decoration workers. Reporters from ZiChangXian hospital to realize, 3 people head, face and other exposed part 2 degree, not life-threatening.
This is the damage of the investigation of statistics. This happened, the causes of the accident investigation team ZiChangXian government that the initial results are: natural gas leak experiment. An interiewer said: "this happened the room 601 is being decorated, we judge of natural gas valve no matter, leakage of gas concentration more and more high, decoration workers wearing sweater, may be produced in the static electricity this sweater, but it could be caused by the other fire this." At present in the treatment of workers also, if there was any other fire had not been determined.
prevent
The correct use gas would you
Through the interview security departments and experts, the reporter understands, because the natural gas caused by the improper use of this accident happened frequently, correctly use natural gas to avoid the tragedy occurrence.
Natural gas is flammable and explosive gas, leakage and reaches a certain concentration ratio, meets the fire will burn even explosion. Therefore, do not use gas, the valve should be securing, is not only the kitchen of valve, and indoor natural gas pipeline are vital to the total valve. Feel that there are natural gas leak, open the doors and Windows, tighten valve, evacuees, and to the outdoor warning ring, not in the field use electrical equipment. In addition, often use xiaomao brush dip in soap water, apply to the gas pipe outlet, if there is a bubble, suggests that a leak phenomenon. Decorate building should pay attention, forbids to gas facilities and the fuel gas facilities, such as gas table, pipelines, etc for embedding, in case when gas leak caused gathered themselves together, and then deflagration. Don't in natural gas pipeline winding wires on, don't will be natural gas pipeline as a grounding wire, try to avoid electric rods.
Winter sit bus easily be "electricity"
Static electricity are small cannot ignore
Case: winter sit bus easily be "electricity"
Ms zhao almost every day from xian high-tech zone by bus to the northern suburb to work. Recently on the bus, she often be "electricity" attack.
"More than 8 a.m., the car people much more special, a grasp on the driver shot cast tightening up the back, because there is a 'hands hemp' feeling." Zhao, she said she knew that it is static. To start her don't feel strange, but such a small attacks more and more frequent, "hemp" feeling also more and more serious, almost every time take bus will meet, "I can't touch helped stem......."
To prevent electrostatic, zhao the women sit bus special worn gloves, evening with complaisant agent immersion, but she said the effect is not obvious, "electrostatic was also able to dangerous things, which blew one thousand passengers get on with dangerous goods, and is too dangerous."
When the static electricity at bus similar to how much? 19, morning, the reporter experience on xian more bus.
At about 12 noon, reporters from the south gate stood on the 603 buses, the car lots of people, in a not-for, second the stairs between, hand the armrest. Body turbulence, obviously feel produced on electrostatic, serious when, also can see sparks. A layer of continued passenger said: "zha so big of the electrostatic?"
Then, the reporter from the village on the road 504 ZhongBaChe, reporters recurrence after money, from the flight attendants pick up ticket in his hand, and had "electricity" attack.
In fact, dry winter, in addition to sit bus catch armrest, pick up tickets pass money will produce static outside, according to the computer, go home, take off clothes open key can produce static, sometimes morning hair comb your hair to float up, the reason the disorderly, also is the static electricity.
Xian city bus company technical department work personnel introduces, bus seat and xian most tail has antistatic device: the static electricity. Many vehicles are SuZhi armrest. "Every lap vehicles, we will require cleaner scrub with wet dishcloth armrest and seat."
Workers say, they usually asked the driver note passenger luggage, such as the discovery of "expanded" resolutely advised to get off, "passenger first to avoid charged, chemical fiber clothes easy generation electrostatic, wear cotton clothing; the second best to get on the best plastic armrest or first catch with key touch metal pole, like this can help eliminate static electricity."
Static experiment
Why will produce static? The power of electrostatic how? December 19, SanShiZhong physics laboratory in xian city, the teacher of the physics through several experiments to li jun we answer.
Experiments 1
Electrostatic about?
"Two different materials to friction material produce static" experimental tools: rubber great static tester fur scarf
Li jun took out a use steel yet, green silk, red nylon line of static tester. Then, with a rubber bar and fur friction of about half a minute, and then used rubber stick close to the static tester, see rubber stick close, red nylon cord immediately start "dancing", as the rubber great mobile and "dance".
Li jun and with their own scarf do the experiment. Li jun and the skin friction of static tester after scarf near, red nylon cord and wave rise.
"In addition to appeal, but can also produce the repelling force." Li jun said, silk and glass rod friction, hanging glass rod, garnish with silk friction another root glass rod, and then two glass rod near, the first glass rod immediately "hide" open.
"Two different materials to friction material produce static." Li jun said, popularly says, two kinds of things friction, are charged, and some with a positive charge, some with negative charges, approached, the objects with different charge attracted to each other, the same kind of charges repel each other.
The experiment 2
Static electricity power have how old?
People set up from the sofa, the human body can be as high as 10000 v voltage experimental tools: rubber great fur DiaoPing check electric water
Li jun took out a clock and watch, "check appliances,", the top is a metal ball, it is inside pointer. Friction with fur of rubber bar close to metal ball, pointer immediately begin to turn, it says xiangjiaobang take the static electricity.
The power of the static electricity have how old? LiJunYong a needle tube DiaoPing derived in water, the water flow uniformly, with the static electricity of rubber bar with near the water, in the direction of flow immediately change, rubber great mobile, also move in the direction of flow. In tap water by leading do the same experiment, although the tap water flow is larger, but can still rubber bar "affects" water flow, and to make the change.
"Test, static electricity pen how tough." Pencil close to the fur friction rubber bar, can hear the crackling slight sound, but not the indicator of pencil on the light.
"The electrostatic voltage and different life, electrostatic voltage discharge time is very short, low power, low current, take his clothes off in winter when the noise produced crackling, shake hands was suddenly electricity to, are fast discharge phenomenon." Li jun said, people from carpet or the sofa set up, the human body can be as high as 10000 more voltage also fell.
The harm of static
Affect heart work, make easily person fatigue irritable
"Electrostatic, though not as alternating current so terrible, but it the damage to human body health is not allow to ignore." 22, shaanxi province people's hospital of dr. Wang said, the human body with electrostatic in several kv even than v, it may interfere with human body or even change the inherent differences, influence each organ, especially the heart to the normal work, especially for those who heart function is more vulnerable, this damage will be more serious; Electrostatic also can affect the person's central nervous, make the person feels fatigue, be agitated, insomnia. In addition, lasting electrostatic likely to affect the body of the ph balanced, can let a person feel nausea, lack of power, anorexia.
Dr. Wang said that, in the long run, the open TV, computer and microwave ovens environment, electrostatic effects on the skin is very obvious, such as those for a long time to computer staff, easy occurrence skin pores increases, dry, lupus, and itchy.
Reporters from the fire department to understand, dry winter, many fires, explosions are caused by static electricity. Can sprinkle, water spray fog improve air relative humidity. Oil depot and stored combustible goods the Treasury to keep ventilated, into such places of the staff, you can't wear chemical fiber fabric clothes.
How to prevent static electricity
Wear cotton clothes, indoor add wet
Li jun said, life many casual movements, can make the person charged. "With the hand knock computer keyboard will produce static, a computer small bacteria to face, so use adsorption before computer wash a face, wash a face to use up again." Li jun says, the old skin moisture less, in dry weather easier to produce static, "using the hand cream, the room can prevent electrostatic humidifier."
Dr. Wang said, life can take a simple way to reduce electrostatic, such as wear cotton clothes, as far as possible wear less chemical fiber kinds of clothings; Household appliances need not when pulled out power plug; Long time using a computer or watching television, clean bare skin; Indoor water more.