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1995 Vol. 12, No. 2
Published: 1995-02-15
1
SPEED UP CONSTRUCTION OF RAILWAY NETWORKS AND TURN ROUND “BOTTLE-NECK” STATUS
Ni ping
The present railway traffic has been in the “bottle-neck” status which restrains the national economy developments. According to the circumstances of our country and our railways， this paper discusses the key role of railways on the national communications and transportations and the meaning of speeding up the construction of railway networks. The railway network con-structions consist of the construction of new lines and the reform of existing railways. Speed up new line construction should be put forward and the technical reform of existing trunklines should be strengthened continuously. Nevertheless，according to the situation of the railways and the needs of its passenger and freight traffic developments, the heavy-haul freight traffic and the high-speed passenger traffic should be taken as the targets, so that the modernization of the tech-nical equipments may be realized.
1995 Vol. 12 (2): 1-4 [
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2441
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5
SITUATION AND FUNCTIONS OF XFAN-NANJING RAILWAY IN CHINESE RAILWAY NETWORK
Xu Jinsheng
Combining with the requirements of the present national reform and economy develop?ments ,this paper gives the discussions on the important meanings of constructing the Nanjing- Xi，an Railway Line and its situation and functions in the Chinese railway network. This railway line will be a new east-to-west main trunkline. The problems on circuitous traffic for a long time may be solved，and the intense circumstances of the traffic capacity of the main trunklines may be released. This line bring forth a new structure in the railway networks of the East China and the Middle-South China. The construction of this new railway line has very important meanings on properly regulating the economy distributions and the enterprise structures and on speeding up the development of socialist market economy.
1995 Vol. 12 (2): 5-9 [
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2462
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10
DISCUSSING SIGNIFICANCE OF CONSTRUCTING XV AN-NAN- JING RAILWAY AND ECONOMIC OF TRAFFIC VOLUME
Shi Qun
Based on the growth of local economy of Northwestern region，development of re?sources ? characteristic of passenger-flow and freight-flow among regions and forecasting of traffic demand in the future, this paper discusses the significance of construction of Xi1 an-Nanjing rail?way in the following four aspects： developing of North-Western region’s local economy? laying out of reasonable railway network ? enlarging transportation capacity of the Asia-Europe Conti?nental Bridge and raising local economy along the railway.
1995 Vol. 12 (2): 10-14 [
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2470
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15
RESEARCH AND DISCUSSION ON MOST OPPORTUNE MO MENT OF BUILDING XI, AN-NANJING RAILWAY
Zhong shaolin
On the basis of analyses whether the transport capacity of the east route in northwest area is suited to increase of freight volume, this paper gives research and discussion on most op portune moment of building Xif an-Nanjing railway.
1995 Vol. 12 (2): 15-21 [
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2477
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22
DISCUSSION ON PARTIAL SCHEME OF XFAN-NANJING RAIL WAY
Shen Dezhao Chen Junhua
The route selection works on zheng-Bamiao section of the Xi -Nanjing Railway have been proceeded. This paper suggests the scheme passing through Danjiang^and its superiori?ties are described.
1995 Vol. 12 (2): 22-25 [
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2471
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26
IMPROVE SURVEY AND DESIGN WORK SPEED UP RAILWAY CONSTRUCTION
MA CHENG
At the present moment, how the object management regulation will be reform in depth, how the system of binding investment will be strengthened. how construction task will be finished by contract accroding to the rule rectified by MOR on expanding tent at ion design (or technology design) arid total valoum of budgetary ? are considerable problems to survey and de?sign department in railway system. Combined with the technology design and work of formulat?ing budgetary in the construction of Bao-Zhong Railway. this paper analyses and discusses prob?lems greatly influencing budgetary composition.
1995 Vol. 12 (2): 26-31 [
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2460
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32
SET UP GPS CONTROL NETWORK FOR CONSTRUCTING PAIL?WAY TUNNELS
Chen Xinhuan
Combined with the engineering and scientific research works，this paper introduces the design of the GPS control network for tunnel construction, the design of surveying programme, field surveying works，accuracy of data-processing results and the experience of GPS surveying. The principles are applicable for surveying the bridge construction control net?work ,the track control surveying，surveying the field control points of aerial survey, surveying on enlarging the national-class control points in the railway engineering surveying area, etc.
1995 Vol. 12 (2): 32-40 [
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2495
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41
ACCURACY ANALYSIS ON CURVE-LAYOUT BY POLAR CO-ORDINATES METHOD WITH SURVEYOR'S TABLE AT ARBI-TRARY PLACE
Xu Yong Li Mengshan
A curve-Iayout is usually made by polar coordinates method with optical ranging on surveyor s table placed at arbitrary point in field. The errors produced by this method are ana?lyzed in detail in this paper. Meanwhile，the author suggests the best means in which the survey?ing-station is inspected from the control point, the maximum length of measuring line on the sur- veying-station and a series of prblems that should be paid attention to the curve-lay out works.
1995 Vol. 12 (2): 41-46 [
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2461
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47
KEY LINKS OF SYNTHETICAL GEOLOGICAL PROSPECTING FOR RAILWAY
Yei Zongrong
In this paper. according to experience which develope synthetical geological prospect?ing in last few years, with regard to the question how synthetical geological prospecting was developed well, six important links are concluded. The question how docs well in each important link is briefly expounded, and is illustrated with example.
1995 Vol. 12 (2): 47-50 [
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2464
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51
RESEARCH ON FAILURE MECHANISM OF RAILWAY CUTTING SLOPES WITH EXPANSIVE ROCKS
Li Min
Based on the engineering geological characteristics of the expansive rocks on the Na- Pai Section of the Nanning-Kunming Railway Line，combined with the failure examples of cut?ting slopes with expansive rocks on the roadbed testing engineering works and the investigated results of slope failure in the Na-Pai Section, the mechanism of failure produced on expansive rock cutting slopes in the Na-Pai Section has been analyzed and researched. This paper points out that the principal factors causing unstable failure of cutting slopes are expansive. crack and low- strength properties of the expansive roeks. Thereby, the reference bases for taking engineering measures to further renovate the expansive rock defects are also proposed in this paper.
1995 Vol. 12 (2): 51-56 [
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2537
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57
MEDIUM - DISSOLVED SALT TEST AND QUALITY CONTROL
Wu Lianrang
Applying the managed samples used by the First Survey and Design Institute after standardization，the author proceeded experiments on the whole procedure of the gypsum test with the quality control mode. The EDTA capacity method for determining the content of the medium—dissolved salt has been proposed. Compared with the test equipments of the tradi?tional quality method,this method is much simple and applicable for field tests.
1995 Vol. 12 (2): 57-62 [
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2434
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63
DESIGN AND CALCULATIONS OF CONTROLLED BLASTINGS FOR CONSTRUCTING DOUBLE-TRACK RAILWAY LINES
Guo Feng Zhang Zhiji
During constructing the double-track railway lines,around the blasting area,there are a lot of important installations,such as railway tracks,high-potential overhead catenary, optical communication cables,etc. Controlling the action of blasting is required to reduce its influence on those important installations. This paper proposes the basic methods of design and calculations of the controlled blasting,so that the blasting engineering can be directed properly and the blasting tasks can be accomplished successfully and safely.
1995 Vol. 12 (2): 63-67 [
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2448
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68
SELECTION OF STONEWORK EXCAVATING SCHEMES FOR ELECTRIFIED DOUBLE-TRACK RAILWAYS
Qing Guangquan
As excavating stoneworks under the condition of the electrified railway with dou?ble tracks side by side,the key technical objectives are： both the proper operation and safety of the existing line should be guaranteed absolutely，and the requirements on the speed of construction should be fulfilled also. The paper sums up the various feasible excavating schemes and introduces their technical essentials，effects and application scopes. These schemes can be selected under different conditions.
1995 Vol. 12 (2): 68-73 [
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2443
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74
CONTROLLED BLASTING ADOPTED ON RECONSTRUCTING SECOND LINE OF BAOJI-CHENGDU RAILWAY
Xie Tiaiji
Based on the engineering characteristics and the geological conditions of the Baoji- Chengdu double-track railway line,this paper gives the discussions on the engineering organi?zations and the technological processes of the controlled blasting. A set of working methods have been established for drilling holes, putting in explosives, plugging up and firing. The method for blasting an insolated big rock has been also proposed.
1995 Vol. 12 (2): 74-79 [
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2469
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80
LONG-SPACED EQUAL-DIFFERENTIAL BLASTING TECHNIQUE APPLIED AT OUTSIDE OF TUNNEL
Yin Jide
The long-spaced equal-differential blasting at outside of tunnel is a new blasting technique developed in recent years. The paper introduces its technologic principle,applica?tion scope，characteristics，construction technique，etc. Based on experimental examples?sev?eral specific technical idexes are suggested and the social economy benefits are analyzed. They are valuable as reference for selection and application of this new technique.
1995 Vol. 12 (2): 80-85 [
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2459
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86
THE DISTRIBUTIVE PRINCIPLE ON STOPPING STATIONS AND CROSSING STATIONS OF HIGH-SPEED RAILWAYS
Cao Enling
In this paper，combined with the properties of high-speed railways, the objective restrictive factors for setting middle stopping stations and crossing stations are analysed. Consulting the transport model produced probably to our country’s high-speed railways, the calculating method of the carrying capacity of sections after setting middle stopping stations and crossing stations are discussed. Lastly,the factors which mustbe considered for setting middle stopping stations and crossing stations of high-speed railways are suggested.
1995 Vol. 12 (2): 86-89 [
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2565
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90
PRINCIPLES OF SELECTION AND DESIGN OF INTERSEC?TIONS FOR HIGH-SPEED RAILWAYS
Ju Haozhi
The overpassing trains in the high-speed railways must pass through the points which intersect the nearby railway for changing lines. Designing the intersections are the component parts of the design of the high-speed railway. According to the study result for the number of overpassing trains in pairs in the Xuzhou-Shanghai Section of the Jing-Hu High-speed Railway,this paper suggests the ideas and analyses questions whether the inter?sections are set at Wuxi，Nanjing，Pukou，Bengfu, Fuliji，Xuzhou，etc,and the questions how the inttisections are set. Preliminary ideas on the design range and the design principle are suggested in this paper.
1995 Vol. 12 (2): 90-94 [
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2463
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95
MINIMUM CURVE RADIUS ON A HIGH-SPEED AND MEDI- UM—SPEED COMMON RAILWAY TRACK
Wang Houxion ；Huang Jianran
This paper discusses the several factors which influence the minimum curve radius on a high-speed and medium-speed common railway track. The regularities of the minimum curve radius are analyzed superficially. There are three target values for high-speed，L e. 250km/h，300km/h and 350km/tu A preliminary view at the minimum curve radius on the tracks corresponding with the above three speeds has been proposed.
1995 Vol. 12 (2): 95-101 [
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2488
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102
THE WAY FOR SELECTING LINE OF HIGH — SPEED RAIL?WAY PASSING THROUGH CITY
Chen Zeyian
Since the standard of railway line is greatly raised，the greatest difficult points that the high-speed railways pass through a city are the large amount of demo litions and the railway territory in contradiction with the planning of the city. This paper concisely analyses some ways for selecting the line of the high-speed railway passing through the city.
1995 Vol. 12 (2): 102-105 [
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2506
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106
DISCUSSION ON STABILIZED STRUCTURE OF SURFACE LAYER OF FOUNDATION BED FOR HIGH-SPEED RAILWAYS
Wang Lihui
The functional requirements on surface layer of foundation bed for high-speed rail?ways are rather more strict than for ordinary railways. In other countries,the stabilized layers with various structure forms which are different from the traditional mode have been adopted as the surface layer of foundation bed for high-speed railways,but the engineering costs are raised consequently. Therefore，it is very necessary to select a reasonable and economical sta?bilized surface layer which is suitable for the conditions of our high-speed railways. The tech?nology, strength and other properties of a dry-hard soil material stabilized by cement are re?searched in this paper. Based on the research，the realizability of using this material as the surface layer of foundation bed for the high-speed railways has been discussed.
1995 Vol. 12 (2): 106-110 [
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2490
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111
PERSONNEL MANAGEMENT OF AMERICAN RAILWAY COR-PORATIONS
Wang Qiuming
According to the investigations and observations of the author .the personnel man?agement systems of some American railway corporations are introduced in this paper. The personnel systems consist of the organization. determination of the staff compositions，the invitation .selection and training of the cadres .c-ic.
1995 Vol. 12 (2): 111-114 [
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2438
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147
BRIDGE-CULVERT SURVEY-DESIGN RELATED TO FLOOD CALAMITY IN RAILWAY
Zhao Baosheng Wang Huaiqing
This thesis analyses the reason why the flood calamity happened at some railways of north area in the last few years. And accordingly, seven problems which must be taken attention for constructing bridges in the future are proposed. These viewpoints are valuable as reference for designing bridges with flood control property.
1995 Vol. 12 (2): 147-149 [
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2457
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157
DYNAMIC MANAGEMENT FOR CONSTRUCTION COST OF LOCAL RAILWAY
Zhang Wendong
This thesis expounds the inevitability that carry out dynamic management for building cost of railway engineering. It points out the problem on ragulating some kind ex?penses in the building budgetary of nationalized railway. Moreover，it suggests the views which revise the way of drawing up and carry out dynamic management for building bud?getary of local railway.
1995 Vol. 12 (2): 157-160 [
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2445
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