|
|
|
| Study on the design attention issues of non-coring section of design drilling hole in coalfield exploration stage |
| Hao Qinhua |
| The 325th Geological Team, Anhui Bureau of Geology and Mineral Exploration, Huaibei 235037, China |
|
|
|
|
Abstract 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.
|
|
|
|
|
|
| [ 1 ] 安徽省地质矿产勘查局325地质队. 安徽省砀山县砀山煤田评价报告[ R ]. 安徽：安徽省地质矿产勘查局325地质队，1962.
[ 2 ] 安徽省地质矿产勘查局325地质队.安徽省砀山县砀山煤田东段详细普查地质报告[ R ]. 安徽：安徽省地质矿产勘查局325地质队，1986.
[ 3 ] 安徽省地质矿产勘查局325地质队.安徽省砀山县朱楼煤矿详查地质报告[ R ]. 安徽：安徽省地质矿产勘查局325地质队，1992.
[ 4 ] 安徽省地质矿产勘查局325地质队.安徽省砀山县朱楼勘查区煤炭详查报告[ R ]. 安徽：安徽省地质矿产勘查局325地质队，2012. |
|
|
|
