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Catastrophic Debris Flows on July 10^(th) 2013 along the Min River in Areas Seriously-hit by the Wenchuan Earthquake

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Journal of Mountain Science 2015年第1期12卷 186-206页

作者： GE Yong-gang CUI Peng ZHANG Jian-qiang ZENG Chao SU Feng-huan Key Laboratory of Mountain Hazards and Earth Surface Processes/Chengdu Institute of Mountain Hazards and Environment Chinese Academy of Sciences CAS Center for Excellence in Tibetan Plateau Earth Sciences Sichuan Engineering Research Center for Emergency Mapping & Disaster Reduction

Over 240 debris flows occurred in hill-slopes, gullies （ indicated those with single-channel） and watersheds （indicated those with tributaries and channels） on July 10th 2013 in the Wenchuan county, and caused 29 casualties and about 633×10^6 USD losses. This work aimed to analyze characteristics, hazards and causes of these events and explore mitigating measures based on field investigation and remote sensing images interpretation. The debris flows contained clay content of 0.1%~3.56%, having densities of 1.72-2.14 t/m^3, velocities of 5.0-m.7 m/s, discharges of 335-2353 m^3/s and sediment yields of 0.10-1.26×10^6 m^3, and also numerously occurred in large watersheds with the area over lo km^2. Large debris flows formed 3 hazard-chains in slopes, gullies, watersheds and rivers, which all evolved in dammed lakes and outburst flood, and 26 dammed lakes and lO newly ones were generated along the rivers of Min and Yuzi. The remarkable spatial difference of loose solid materials accumulation and intense rainfall, with the cumulative of about or more than 150 mm and the hourly of over 16mm, caused debris flows in the sections from Yingxiu to Miansi and Gengda. The damages on buildings, reconstructions, highways,factories and hydro power station originated from the impacting, scouring, burying of debris flows, the submerging of dammed lake and the scouring of outburst flood, and the huge losses came from the ruinous destructions of control engineering works of debris flows as well as the irrational location and low- resistant capabilities of reconstructions. For hazards mitigating of debris flows in long term, the feasible measures for short term, including risk-reassessing of foregone and potential hazard sites, regional alarming system establishing and integrated control in disastrous sites, and middle-long term, including improving reconstruction standard, rationally disposing river channel bed rise and selecting appropriate reconstruction time and plans, were strongly

关键词： Debris flows Wenchuan Earthquake Characteristics Damages Causes preventions

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Primary research on neoplasm needle track implantation metastasis after radioactive seeds implantation and preventive measures

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The Chinese-German Journal of Clinical Oncology 2007年第4期6卷 405-407页

作者： Juan Wang Weihong Gong Huige Fan Aixia Sui Na Zhao Yongqing Shen Department of Oncology Hebei Provincial People＇s Hospital Shijiazhuang 050051 China

Objective:To observe the possibility of neoplasm needle track implantation after radioactive seeds implantation and seek preventive measures to avoid ***:Superficial tissue of 250 seeding needle cores and 250 stylophores employed in neoplasm radioactive seeds implantation was smeared on slides to search for tumor *** patients received chemotherapy or endocrine therapy after *** B-mode or computer tomography(CT)was performed at 10th day,30th day,60th day,and 180th day post operation to detect neoplasm implantation metastasis through needle tracks. Results:Positive cells were found on 13 of 250(5.20%)cores,and 7 of 250(2.80%)*** difference was not sta- tistically significant(P>0.05).The positive cells frequency of needles those traversed distance less than 3 cm in normal tissue was 6.19%(13/210),while the frequency of the others those traversed longer distance in normal tissue was 2.41%(7/290). The positive cells frequency of needles traversing different distances in normal tissues is significantly different(P<0.05).No neoplasm was detected through needle tracks by ultrasound B-mode or CT in 180 days after ***:Tumor cells could ablate into the needle track during radioactive seed *** preventive measures,such as optimization of pre-operation and intra-operation treatment plan,chemotherapy or endocrine therapy after operation,may be beneficial to avoid the implantation metastasis of neoplasm in seeding needle tracks.

关键词： tumors radioactive seeds puncture neoplasm implantation/metastasis preventions

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Status quo and Countermeasures of Industrial pollution in Shucheng Coutny

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Agricultural Science & Technology 2016年第5期17卷 1234-1237页

作者：李涓舒城县环境监察大队安徽舒城231300

The research described industrial pollution status quo from geographical location,industry distribution,pollutant variety and quantity of Shucheng County and proposed countermeasures and suggestions.

关键词： Industry Pollution Status quo preventions Countermeasures and sug gestions

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