Establishment of a 3D solid model blasting rock mass based on intelligent lithology identification
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摘要: 随着智能钻机的研发和使用,能够准确地获得爆破钻孔的岩性数据。通过建立炮孔数据库对智能识别的炮孔数据进行存储和管理;以炮孔岩性数据为样本,使用距离平方反比法对爆破区域范围内的实体单元进行插值,生成爆破岩体三维实体模型;使用爆破区域范围多边形和采场三角网先后对岩体三维实体模型进行裁切,得到裁切后的爆破岩体三维实体模型。使用C++编程实现爆破岩体三维实体模型建立的所有过程,以内蒙古锡林浩特某露天矿918平盘爆破为应用实例,建立该爆破区域的岩体三维实体模型。通过该爆破岩体三维实体模型计算炮孔装药量,与单孔岩性计算炮孔装药量结果进行对比,结果表明,通过三维岩体模型计算炮孔装药量有效地降低了爆破成本,提高了爆破效率。Abstract: With the development and application of intelligent drilling machine, the lithology data of blasting borehole can be obtained accurately. The blast-hole database is established to store and manage the intelligently identified blast-hole data. Taking the rock property data of blast hole as the sample, the inverse distance square method is used to interpolate the solid elements within the blasting area to generate the 3D solid model of blasting rock mass. The 3D solid model of rock mass was cut by using the polygon of blasting area and the triangular network of bench, and then the 3D solid model of blasting rock mass was obtained. C++ programming is used to realize all the process of establishing 3D solid model of blasting rock mass. Taking 918 bench blasting of an open pit mine in Xilinhot, Inner Mongolia as an example, the 3D solid model of rock mass in the blasting area is established. The blasting charge calculated by the three-dimensional rock mass model in this area is compared with that calculated by the single hole rock property. The results show that the blasting cost is effectively reduced and the blasting efficiency is improved by calculating the blasting charge by the three-dimensional rock mass model.
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表 1 炮孔数据
Table 1 Blast hole data
O;"9";"1.炮孔编号:0620171118170059 " O;"9";"2.钻机状态:2 " O;"9";"3.钻机号:6 " O;"9";"4开机时间:20171118170059 " O;"9";"5.经度:115°59′52.0 ″" O;"9";"6.纬度:44°0′2.0 ″" O;"9";"7.高程:940.46 m" O;"9";"8.炮孔编号:0620171118170059 " O;"9";"9.炮孔深度:401 cm" O;"9";"10.回转速度:120 r/min" O;"9";"11.回转压差:6.2 MPa" O;"9";"12.加压压力1:4.3 MPa" O;"9";"13.加压压力2:0.7MPa" O;"9";"14.钻进速度:4 cm/s" O;"9";"15.风压:0.4 MPa" O;"9";"16.识别岩性:1" 表 2 数据库中的炮孔基本信息
Table 2 Basic information table of blast hole in database
炮孔号 经度 纬度 X/m Y/m Z/m 开机时间 ZK2023 116°0′15.0″ 43°59′48.0″ 19477.48 74464.33 916.61 2018-09-13 10:10 ZK2024 116°0′17.0″ 43°59′48.0″ 19480.17 74458.97 916.19 2018-09-13 10:10 ZK2025 116°0′14.0″ 43°59′48.0″ 19482.85 74453.60 916.03 2018-09-13 10:10 ZK2026 116°0′12.0″ 43°59′49.0″ 19485.54 74448.24 915.97 2018-09-13 10:10 $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ ZK2027 116°0′15.0″ 43°59′49.0″ 19488.22 74442.87 916.08 2018-09-13 10:10 表 3 数据库中的炮孔数据
Table 3 Data table of blast hole in database
序号 炮孔号 炮孔深度/
m回转速度/
(r·min−1)回转压差/
MPa加压压力1/
MPa加压压力2/
MPa钻进速度/
(cm·s−1)风压/
MPa识别岩性 深度顺序 25971 ZK2023 16.62 90 55 43 7 6 5 3 21 25972 ZK2023 4.68 75 46 30 7 3 4 3 1 25973 ZK2023 5.04 105 55 40 8 7 4 3 2 25974 ZK2023 5.37 120 39 30 7 3 4 3 3 $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ $ \vdots $ 25975 ZK2023 5.74 90 49 40 7 6 5 5 4 表 4 数据库中的岩性数据
Table 4 Lithology data table in database
层号 岩性识别 1 泥岩 2 粉(细)砂岩 3 砂质泥岩或泥质砂岩 4 粗砂岩 5 炭质泥岩 6 煤 7 钙质或硅质胶结砾岩 -
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