Chen YingXian, Wang PengFei, Chen Jian, Zhou Meng, Yang HongXia, Li JiaYing
College of Mining, Liaoning Technical University, Fuxin, 123000, China.
Sci Rep. 2022 Jan 11;12(1):541. doi: 10.1038/s41598-021-04615-8.
The development and use of intelligent drilling rigs make it available to obtain accurate lithology data of blast drilling. In order to make full use of drilling data to improve blasting efficiency, the following research was carried out. First, a database is established to manage and store the blast hole data recognized by the intelligent drill. Secondly, the blast hole lithology data is taken as a sample, and the inverse distance square method is used to interpolate the blasting range's solid elements to generate a three-dimensional solid model of the blasting rock mass. Afterward, the blasting range polygon and stope triangle grid are used successively in the solid model to obtain the cut 3D solid model of the blasting rock mass; finally, the blast hole charge is calculated based on the cut 3D solid model of the blasting rock. The C++ programming language is used to realize all the blast hole charge amount processes based on the three-dimensional solid model of the blasting rock mass. With the application example of No. 918 bench blasting of Shengli Open-pit Coal Mine in Xilinhot, Inner Mongolia, the blast hole charge amount in the blasting area is calculated and compared with the results of single hole rock property calculation, the results show that the blast hole charge calculated by three-dimensional rock mass model can be effectively reduced.
智能钻机的发展与应用使得获取爆破钻孔的准确岩性数据成为可能。为了充分利用钻孔数据提高爆破效率，开展了以下研究。首先，建立数据库来管理和存储智能钻机识别的炮孔数据。其次，将炮孔岩性数据作为样本，采用距离平方反比法对爆破范围内的实体单元进行插值，生成爆破岩体的三维实体模型。然后，在实体模型中依次使用爆破范围多边形和采场三角形网格，得到爆破岩体的切割三维实体模型；最后，基于爆破岩体的切割三维实体模型计算炮孔装药量。利用C++编程语言实现了基于爆破岩体三维实体模型的所有炮孔装药量计算过程。以内蒙古锡林浩特胜利露天煤矿918台阶爆破为例，计算了爆破区域的炮孔装药量，并与单孔岩石性质计算结果进行比较，结果表明，采用三维岩体模型计算的炮孔装药量可有效降低。
