Prospects of Applying MWD Technology for Quality Management of Drilling and Blasting Operations at Mining Enterprises

Abstract

This paper presents a review of measurement while drilling (MWD) technology as applied to the mining industry, describes its development path, provides a global review of literature on this topic, and outlines further trends of development for research on MWD application in drilling and blasting (D&B) operations at mining enterprises. The current review serves as a starting point for anyone interested in the research or application of MWD technology in Mining and Construction. In the paper, the authors examine major works of researchers in this area, describe current state of the art, and propose a way to improve MWD for drilling equipments. The paper contains examples of technology application in various processes, associated with drilling and mining operations, describes approaches and problems of MWD system utilization, revealed in the course of data collection and analysis of drilling processes. The study also presents a summary of existing approaches in the area of data validation and verification, applied up to the present day to cope with the problems of global MWD use in Mining and Construction. The authors outline future areas of study which are of interest and deserve the attention of the scientific community and researchers working on the development of MWD technology.

Optimal Pitwall Shapes to Increase Financial Return and Decrease Carbon Footprint of Open Pit Mines

“…• E v = 112 − 148J∕cm 3 is the drilling specific energy which depends on rock type and was estimated based on a unified classification system of rocks according to their drillability [61]; • drill = 80% is the assumed driller efficiency; • m b is the mass of the block in tonnes.…”

Intelligent Control of Smooth Blasting Quality in Rock Tunnels Using BP-ANN, ENN, and ANFIS

“…Table 30 shows that the sequence of the comprehensive quality index of tunnel smooth blasting of the seven designed schemes is as follows: scheme 6 < scheme 7 < scheme 2 < scheme 4 < scheme 1 < scheme 3 < scheme 5, and the corresponding comprehensive quality index is successively as follows: 4:6670 < 4:6761 < 5:6525 < 5:9687 < 6:0994 < 6:4114 < 6:8001. The evaluation levels of schemes 2, 6, and 7 are intermediate, and the evaluation levels of the other three 18 Geofluids schemes are lower. Therefore, scheme 6 is the optimal scheme, which can be used as the recommended control parameters, that is, the neighboring eyes spacing is down-adjusted by 20%, the minimum resistance line is down-adjusted by 15%, and the linear charge density is down-adjusted by 1%.…”

“…However, the proposed control index does not form a system, the actual smooth blasting control process is greatly influenced by human subjectivity, and the accuracy and reliability of the control is poor. Numerous domestic scholars have also conducted extensive research on the tunnel smooth blasting quality control, which mainly involves the repeated test and optimization of blasting parameters [1][2][3][4][5][6][7][8][9][10][11][12], neural network models [13,14], mutation comprehensive evaluation theory [15], computer simulation [16,17], information construction [18,19], three-dimensional laser scanning [20], and other technologies, thereby proposing a reasonable control technology. However, no unified system exists for studying the tunnel smooth blasting control index, control criterion, and control method.…”

Условия Формирования Волн Напряжения При Взрыве Шпуровых Зарядов Взрывчатого Вещества И Их Влияние На Качество Разрушения Горных Пород При Проходке Горных Выработок

“…При взрыве заряда ВВ нагрузка на окружающую породу прикладывается мгновенно, а снижается медленно, по мере падения давления с уходом газообразных продуктов взрыва из зарядной полости в процессе растрескивания окружающей породы. Вследствие этого по породному массиву вслед за ударной волной распространяется волна разряжения на значительно большую глубину, чем волна сжатия [8][9][10][11][12].…”