Classification of Hydrocarbon Deposits in the South-Eastern Part of the Bukhara-Khiva Region, Justification of Its Methodology and Analysis of the Results

The article considers the dependences of determining the parameters of the destruction zones of the rock mass by explosive charges, proposed by V.N. Mosints, N.P. Gorbachev, M.F. Drukovanny, V.N. Tyupin, B.N. Kutuzov and A.P. Andrievsky and others. The above dependences allow determining the location of the boreholes in the face, taking into account the physical and mechanical characteristics of the massif being destroyed, the features of the explosive used, the variety of mining, geological and mining technical conditions for driving mine workings, as well as performing the calculation of rational parameters under conditions of increased rock pressure.

Section: Discussionmentioning

confidence: 99%

Methods for calculating the parameters of drilling and blasting operations based on the primary determination of the zones of destruction of the rock mass

Оchilov,

Маkhmudоv,

Nizamova

et al. 2024

“…In these cases, the increased speed of the rock mass will contribute to the growth of the efficiency of blasting. It should be noted that the speed of movement of broken rock mass during short-delayed blasting of several layers is always lower than during simultaneous instantaneous blasting under similar conditions [30][31][32][33][34][35][36][37][38][39][40][41][42].…”

Section: Fig 5 Graph Of the Output Of Fractions Crushed By The Explos...mentioning

confidence: 99%

Investigation of the Process of Destruction of a Roain Massif by Borehole Charges with an Axial Air Cavity by the Method of Physical Simulation

Zairov,

Urinov,

Ochilov

et al. 2024

the design of downhole explosive charges with an axial air cavity was developed, which ensures uniform crushing of the rock mass and reduces the specific consumption of explosives. A technique has been developed for modeling the process of destruction of a rock mass by borehole charges with an axial air cavity. It has been established that with an increase in the diameter of the axial cavity, the mass of the charge and the specific consumption of explosives for breaking decrease. However, this decrease occurs only up to a certain limit, after which the volume of the chipped mass decreases and the specific consumption of explosives increases. The most efficient way is to reduce the specific consumption of explosives for breaking when the ratio of cavity diameters and charge diameters is 1.3:5–2.2:5. For other values of the ratio, the specific consumption of explosives increases dramatically.

“…This leads to the fact that the energy in the drill is used unsatisfactorily, since the stresses that arise in the drill area produce only an insignificant part of the useful destruction, ensuring the normal state of the bottom of the bottom after the explosion. Despite this, there are quarries in the mining industry where the overdrill value is 3-5m [32][33][34][35][36][37][38][39][40][41][42][43][44][45]. From the point of view of drilling and blasting technology, with a 15-meter height of ledges in a well with a diameter of more than 200 mm, the height of the charge column is from 5-8 to 8-10 m, as a result, the stemming share is 30-40% of the well length.…”

Section: Fig 1 Scheme Of the Formation Of The Slope Angle Of The Ledg...mentioning

confidence: 99%

Justification of the Value of Well Drilling During Explosion of Leads

Umarov,

Nasirov,

Makhmudov

et al. 2024

The article considers the influence of the strength of rocks, the type of explosive height, the diameter and length of the charge in the drilling of wells on the quality of crushing rocks. It has been established that about 50% or more of the length of the drilled well is used irrationally, and only 50% is used for its intended purpose for destroying the explosive charge in order to destroy the massif by explosion. To determine the effect of the distance between the charges on the value of the resistance overcome along the sole, industrial experiments were carried out at the quarries of the NMMC and AGMK.