The 325th Geological Team, Anhui Bureau of Geology and Mineral Exploration

为了加快砀山煤田勘探进度，对勘探阶段的部分设计钻孔采取部分非取芯钻进方式。根据多年来的勘查经验，在皖北砀山煤田勘探中对钻孔非取芯段的设计进行研究。研究表明，设计非取芯钻孔时，需要熟悉该区的地层层序和煤层赋存状态、重要标志层和煤层的间距、断层、覆盖层厚度等一系列问题，再参考设计钻孔所在勘探线上前后2个钻孔中的信息，以及左右勘探线上相邻钻孔信息，才能对非取芯段进行精准设计。

In order to speed up the pace of exploration in Dangshan coalfield, part of the design drilling holes in the exploration stage were drilled by non-coring drilling method. Based on many years of exploration experience, I studied the design of non-coring section of drilling in Dangshan coalfield exploration in northern Anhui. The research showed that when designing non-coring drilling holes, it was necessary to be familiar with the stratigraphic sequence and coal seam occurrence state in the area, the spacing between important marker layers and coal seams, faults, overburden thickness and a series of problems, and then refer to the information in the two drilling holes before and after the exploration line where the design drilling hole was located, as well as the information of adjacent drilling holes on the left and right exploration lines, so as to accurately design the non-coring section.

郝琴华. 煤田勘探阶段设计钻孔非取芯段设计注意事项研究[J]. 煤炭与化工, 2023, 46(10): 69-72.

Hao Qinhua. Study on the design attention issues of non-coring section of design drilling hole in coalfield exploration stage. CCI, 2023, 46(10): 69-72.