Study On The Measurement Method Of Karez In Xinjiang

The history of thousands of years in Karez has played an important role in various countries along the Belt and Road.It is a milestone in the historical development of the Silk Road and a precious cultural heritage left by mankind.Researchers at home and abroad mainly study the origin and spread of Karez and Karez from linguistics,history,etc.There are few studies on the construction measurement methods of Karez.This paper mainly takes the Karez in Turpan,Xinjiang as an example,through field investigation,simulation,mathematics and other methods,it systematically studies the Turpan Karez project,and divides its measurement technology into exploration survey and construction survey.The main conclusions are as follows:Exploration measurement technology: In-depth study on the characteristics of the ancient selection of the Karez route and the determination of the Karez test well position,Kaner well shaft depth measurement tool and height difference measurement method and get a new measurement method of height difference: diamond measurement method.Construction survey methods: The use of interviews to study and analyze the orientation of culverts,the transfer of culvert elevations,and the determination of slopes using the method of plumbing,water leveling,and water depth(the basket method).Using the literature data method to study and summarize the characteristics of the Karez engineering measurement technique in Iran,the comparative analysis method was used to analyze the similarities and differences of the Karez engineering structure and measurement method characteristics in Xinjiang and Iran.The similarity is that the structures of the two Karez are the same,and the geometrical rectangle method is used to determine the depth of the shaft and is based on the same height difference measurement principle.The difference is the use of Pythagorean theorem to calculate the underground interval between shafts in Karez,Iran,and its measurement method of height difference is relatively abundant.The subject under study is Karezs and systematically studies its engineering techniques.It has certain academic value for the origin and propagation process of Karez and the development of science and technology for the Silk Road in China.