Ўзбекистон республикаси фанлар академияси навоий бўлими ташкил этилганининг 5 йиллигига бағишланган “фан, таълим ва ишлаб чиқаришнинг

МЕЖДУНАРОДНАЯ НАУЧНО-ПРАКТИЧЕСКАЯ КОНФЕРЕНЦИЯ 
«ИНТЕГРАЦИЯ НАУКИ, ОБРАЗОВАНИЯ И ПРОИЗВОДСТВА – ЗАЛОГ ПРОГРЕССА И 
ПРОЦВЕТАНИЯ», ТОМ I, ГОРОД НАВОИ, РЕСПУБЛИКА УЗБЕКИСТАН, 2022 
- 274 - 
thickness of limestones is from 67.0 m to 149.0 m, the total has not been 
established. In low relief areas, limestones are overlain by Quaternary deposits 
(loams), with an average thickness of 10.2 m. There are no tectonic disturbances. 
Local cutting cracks are observed, accompanied by rock crushing. Karst 
formations have not been identified. Below, table 1 shows the chemical 
composition of a sample of Shirmanbulak III limestone, where the content of the 
main rock-forming component CaO is within 52.64 - 54.44%, and the loss on 
ignition is 39.9- 42.8%.
Table 1. Chemical composition of limestone from Shirmanbulak III deposit 
In the study of the physical and technical parameters of the limestone 
sample from the Shirmanbulak III deposit, the following parameters were 
established (table 2). 
Table 2. Physical, mechanical and technological properties of limestone 
from the Shirmanbulak III deposit 
Properties 
Unit of measurement The quantity 
Volumetric weight 
kg/m
3
2,67 
Bulk density 
kg/m
3
1770 
Loosening ratio 
- 
1,5 
Water absorption 
% 
0,03-3,19 
Compressive strength in dry condition 
kg/cm
2
1136-1826 
Softening factor 
- 
0,8-1,0 
Naiman II.
The Naiman II limestone deposit is located in the Bulakbashi 
district of the Andijan region. Limestone reserves in the deposit amount to 
1,700.3 thousand tons. The field is located at the northwestern end of the 
Chilustun mountains. The area of the deposit is a rocky ridge with steep sides. 
The useful stratum is composed of marbleized limestones, overlain by Quaternary 
rocks with fragments of limestone exposed up to 0.2 m thick. Limestones of light 
gray and gray color, cryptocrystalline, massive, with small karst voids and a 
network of small white calcite veins. The bedding of limestones is monoclinal 
with a dip to the west of 255-275° at an angle of 63-85°, the exposed thickness of