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平整土地是农田基本建设的基本功。以往,我们在哈密县陶家宫公社和巴里坤县三塘湖公社采用下述方法平整土地,效果很好。 首先,每块地的上、下,左、右每隔50米钉一个木椿(椿顶与地面平),求出椿顶高程的算术平均值,作为该地块中心点的设计高程,然后以此点高程,根据地块的上下或左右的坡度,依次增减各椿的设计高程。照此去做,就能达到挖土和填土平衡。 例如,测得某一块地各椿原地面高程(米)如下表:
Land leveling is the basic work of farmland infrastructure. In the past, we used the following methods to flatten the land in the Tajugong commune in Hami County and the Tongtang Lake commune in Balikun County, which worked well. First of all, each block of the top, bottom, left and right every 50 meters nail a wooden piles (top of the ground and the top of the piles), calculate the arithmetic average of the top of the piles as the center of the block design elevation, and then With this point elevation, according to the block up and down or left and right slope, followed by increasing or decreasing the design elevation of each Chun. Do this, we can achieve the excavation and filling balance. For example, the ground elevation (in meters) of each Chunan in a certain area is measured as follows: