www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
China / Society

Rising lake levels threaten to flood major railway line

By Zheng Jinran (China Daily) Updated: 2014-06-14 08:24

Rising lakes in Qinghai province may affect the safety of the nearby high-elevation Qinghai-Tibet Railway, experts said, as they called for joint efforts between departments to prevent possible damage.

"The railway is now only 8 km from the Salt Lake in the Hoh Xil area of Qinghai, down from 12 km in September 2011," said Liu Baokang, an engineer from the Satellite Remote Sensing Center under the Meteorological Bureau of Qinghai province, on Friday.

The weather in the Qinghai-Tibetan Plateau is becoming wetter and hotter in summer, resulting in steadily increasing rainfall in July and August, according to provincial meteorological records.

Rising lake levels threaten to flood major railway line

The coming flood season will thus push the water level higher, possibly extending the Salt Lake closer to the major rail line, which links Xining, Qinghai province, and Lhasa, the Tibet autonomous region, he said.

In the Hoh Xil area in southwestern Qinghai, four inland lakes, including the Zonag Lake in the west and the Salt Lake in the east, were linked by flooding after a natural dam break of Zonag Lake in September 2011, an event that experts believe was triggered by two nearby earthquakes.

Due to the dam break, about 5 billion cubic meters of water, equal to 485 West Lakes in Hangzhou, Zhejiang province, were discharged from Zonag Lake, located in the higher western area, flowing to the two lakes nearby.

Flooding from the three lakes converged on the Salt Lake in the lower eastern area, quickly expanding its surface area from about 46 square km before the dam break in 2011 to around 142 sq km in 2014.

In addition to posing a possible danger to the railway, the expanding lake surface may create problems in telecommunications in the area.

"The Salt Lake contains a higher salt concentration, and the salty water could corrode the communication optical cables nearby," Liu said. The government needs to take action to avoid damage to the telecommunications and railway systems, he added.

Obtaining a more accurate analysis of the direction of the lake's expansion requires a map reference that can give the topographical situation of the lake and surrounding areas to within 20 meters. Such information is available only from the province's mapping bureau, Liu said.

"We urgently need to cooperate with the bureau to share the accurate topographic information in order to release the targeted measures," he said.

Zheng Jie, deputy head of Qinghai province's forestry department, said the government began to keep a closer eye on the increasing surface of the Salt Lake to protect the safety of the railway and other tunnels, China News Service reported.

A professional team conducted a field investigation and handed in a response report to the central government in 2013, the deputy head said.

But Liu said the experts did not agree on whether to rebuild the broken dam, and the authority has not taken any action.

 

Highlights
Hot Topics
...
主站蜘蛛池模板: 高清一本之道加勒比在线 | 中文字幕在线播放视频 | 欧美黄色精品 | 国产三级a三级三级 | 一区二区亚洲精品 | 香蕉依依精品视频在线播放 | 亚洲伊人色综合网站亚洲伊人 | 久久99国产亚洲高清观看韩国 | 日本乱理伦中文三区 | 亚洲伊人久久综合影院2021 | 久久91亚洲精品久久91综合 | 久艹在线观看 | 国产精品18久久久久久久久久 | 嫩草影院在线观看网站成人 | 亚洲一区二区三区在线播放 | 在线观看中文字幕国产 | 一级毛片视频免费观看 | 久久久久国产免费 | 91人碰| 无限资源中文免费 | 久久久毛片免费全部播放 | 国产高清精品毛片基地 | 在线中文字幕亚洲 | 日韩一区精品 | 九九精品成人免费国产片 | 亚洲性视频网站 | 久久一本色道综合 | 日本视频在线观看不卡高清免费 | 欧美色老头oldvideos | 成人a影片在线观看 | 99re5久久在热线播放 | 久久成人国产精品免费 | 成人亚洲欧美日韩中文字幕 | 久久久亚洲欧洲日产国码二区 | 久久两性视频 | 在线亚视频| 久久亚洲国产视频 | 久久道| 综合亚洲精品一区二区三区 | 国产一区二区三区四区五区tv | 91大神大战丝袜美女在线观看 |