Considering that the characteristics of our country ' s highway tunnels are always of long spans, tabular and of various geometry, by means of thorough analysis of the different problems existed in the design of support structures of the tunnels at present, this paper pays special attention to the two key problems, optimization method of form selection of structural section of the tunnel as well as the stability and bearing capacity of the support structures, in the design of the long and large tunnel on high - class highway, introduces the simplified complex - form optimum method in the structure optimization theory, discusses the optimum design model of lining section of highway tunnel with satisfying demands in building clearance, ventilation and load conditions, puts forward an optimization method of form selection of three different kinds of lining sectional forms ( i. e. single - center circle, three - center tabular circle and three - center sharp circle ), establishes a complete set of systematic optimum design the ory and method of long and large tunnel on high - class highway, develops the corresponding computer software used on the planned xuefeng mountain highway tunnel on shaoyang to huaihua expressway in hunan province for optimization of form selections of the structural sections, and obtains a series of relatively reasonable structural design parameters
本文針對我國公路隧道多為大跨度、扁平、幾何形狀呈多樣
化的特點，通過深入分析目前隧道支護結構設計中存在的各種問題，抓住高等級公路長大隧道設計中隧道結構斷面的優
化選型及隧道支護結構的穩定性與承載能力兩個核心問題，引入結構優
化理論中的簡易復合形優
化方法，深入探討了滿足建築限界、通風條件、受力狀態約束等條件下公路隧道襯砌斷面優
化設計模型，提出了三種襯砌斷面形狀（單心圓、坦三心圓和尖三心圓）的優
化選型方法，建立起一套完善的高等級公路長大隧道的系統優
化設計理論與方法，並開發出相應的計算機程序，用於擬建的上海至瑞麗國道主幹線湖南省邵陽至
懷化高速公路雪峰山長大高速公路隧道的結構斷面優
化選型，得出了一系列較為合理的支護結構設計參數。
On july, 7th - 8th, 2000, experts and directors from different regions of guangxi gathered in yingbin hotel, liuzhou and attened the academic exchanged for 3 - year establishment of gamma knife center of liuzhou people s hospital. there were 180 experts and journalists from neurosurgery, internal nerve, irradiation, tumor and facial features all over guangxi and huaihua region of hunan province
日，來自廣西各地區的專家主任雲集柳州市迎賓館，參加柳州市人民醫院伽瑪刀中心成立三周年學術交流會，出席交流會的有廣西各市地縣及湖南
懷化地區的神經外科神經內科放療科腫瘤科五官科的專家和新聞單位的記者共
The manufacture park will cover an area of 1, 000 mu. it has four manufacturing districts including light industrial products and testile, food, metal, building material, medicine and health products
項目位於
懷化市河西新區舞陽大道以東，河西大道以南，佔地面積1000畝，擬建輕紡產品加工區、食品加工區、五金建材加工區和醫藥保健品生產區等4個生產加工區。
Located at the junction of hutian road and zhengqin road, huaihua city. land area : 36mu. contuction contents : 30 storeys of main building and a 5 - star hotel
項目選址于
懷化市湖天大道與正清路交匯處，佔地36畝，擬修建主體大樓30層的五星級賓館一座。
A 640km long rail linking chongqing and huaihua, total investment of 18 billion yuan
重慶至
懷化鐵路，全長640公里，總投資額為180億元人民幣；
Work division and construction of xiangfan - huaihua section of jiaozhou - liuzhou railway
懷化區段站的分工與建設
Conclusion the rate of dyslipdemia of above 4l years old people in huaihua city is high, it predicts that the risk of atherosclerotic cardiovascular disease increases
結論
懷化市區41歲以上的中老年人群血脂異常比例較高，預示動粥樣硬
化性心血管病的發病風險增加。
Study on the central city construction and development of the xiang - gui - qian - yu - e broder areas in huaihua city
略論
懷化市五省邊區中心城市建設與發展
From huaihua yueyang, like to play flute
來自
懷化，岳陽，愛好長笛演奏。
From huaihua, to be good at flute and sax, like pc and music making
來自
懷化，擅長長笛和薩克斯演奏，愛好電腦和音樂製作。
Aim to investigate the blood lipid status and dyslipdemia of 41 years old people group
摘要目的調查
懷化市區41歲以上部分人群血脂現狀及血脂異常情況。
The writer made a large scale investigation on the point of satisfaction with the services from both huaihua mobile communication company and huaihua union communication company, and also has made a quantitative estimate on the satisfaction generally and variously
本研究採用分層的系統抽樣方法，對
懷化市兩大移動通信公司? ?
懷化市移動通信公司與
懷化聯通公司進行了較大規模的客戶滿意度調查。在調查的基礎上，對兩公司的總體滿意度及各方面滿意度進行定量評估。
Probe into the rural hydropower development solution of huaihua
懷化農村水電之對策探討
From huaihua, like to play flute
來自
懷化，愛好長笛演奏。
We shouldn ' t waste that much time at noon on our lunch in huaihua city
我們浪費了太多的時間在
懷化吃中飯。
Thinking about the development of nongovernmeortal and technology enterprises in huaihua
加快發展
懷化民營科技企業的思考
At present, mainly caused by the increase of non - agriculture construction land occupation, the phenomenon of cultivated land non - agriculture is common in huaihua city and the cultivated land decrease gradually every year
目前，懷化市耕地非農化現象較嚴重，非農建設佔地迅速增加，耕地數量逐年減少。
