论文部分内容阅读
地質技術指示書是鑽探煤田時不可缺少的資料,其中最重要的一項是鑽孔理想柱狀圖。如該图的精度愈準確,鑽探工程也会愈順利,同時鑽探成本也隨之降低。如果圖的誤差大,即理想的深度与实際鑽進的深度相差很大,則不但增加鑽探工程上的困难和影响鑽探進尺;而且造成人力物力上的浪費。若因理想柱狀圖下準確,而打掉煤層,需要補打斜孔時,更給国
Geotechnical instructions are indispensable for drilling coalfields, the most important of which is the ideal bar chart for drilling. As the accuracy of the figure is more accurate, drilling works will be smoother and drilling costs will also decrease. If the error of the figure is large, that is, the difference between the ideal depth and the actual drilling depth is large, it will not only increase the drilling engineering difficulties and affect the drilling footage but also cause a waste of manpower and material resources. Ruoyin ideal column under the accurate, and destroyed the coal seam, you need to fill oblique holes, but also to the country