WebFeb 25, 2024 · The geological condition of surrounding rock is essential for supporting design and disaster prevention of roadways in the underground coal mines. The main point of this research is to compare two methods, namely rock drillability index and drilling specific energy, of assessing the geological conditions of surrounding rocks through … WebFormation drillability is an indicator which describes the difficulty degree of drilling into the rock under certain conditions. The main purpose of a drillability study is to classify rock …
Study of Drillability Evaluation in Deep Formations Using
WebFeb 23, 2024 · Firstly, a discrete element software named Particle Flow Code in 2 Dimensions (PFC 2D) was used to analyze the applicability of rock drillability index and drilling specific energy, in which graded particle assemblies were created to simulate the rock behaviour. In the numerical models, Weibull distribution was used to randomize the … WebThe drillability of a rock mass is determined by various geological and mechanical parameters. *Corresponding author. E-mail: [email protected]. Tel: +90 Drillability of rock is one of the important parameter to 372 2574010-1110. Fax: +90 372 2574010. decide the progress and economics of excavation. manitowoc invite results
Drillability prediction: geological influences in hard rock drill …
WebGoodrich Corporation, a Fortune 500 company, is a global supplier of systems and services to the aerospace, defense and homeland security markets. With one of the most … WebFeb 19, 2024 · Rock drillability is a comprehensive index that indicates the ease of drilling a hole in the rock mass, which is a main basis for the design of drilling bits, the … WebAug 3, 2016 · Unit for conducting tests on the drillability of rock: 1 – core; 2 – bit; 3 – scale; 4 – pump for pore pressure; 6 – pump for axial pressure; 6 – pump for confining pressure; 7 – pump for bottomhole pressure; 8 – air compressor; 9 – feedback control; 10 – data transmission line; 11 – center for monitoring “bit-rock” interaction. Full size image kosciusko community fair