Zhaogu No. 2 Mine Zhaogu No. 2 Mine Enterprise Profile Zhaogu No. 2 Mine is located at the southern foot of Taihang Mountain, east of the Jiaozuo Coalfield. The administrative division is under the jurisdiction of Xinxiang Huixian City. It is a joint venture between Henan Coal Chemical Group Coking Coal Company and Shanghai Baosteel. The development and construction of "Jiaozuo Coal Industry (Group) Xinxiang Energy Co., Ltd." is a national coal industry development "Eleventh Five-Year Plan" project and a key construction project in Henan Province. It includes three individual projects: mines, coal washing plants and railway dedicated lines. Investment The total estimated budget is 1.849 billion yuan. The mine has a designed annual production capacity of 1.8 million tons, a construction period of 45.3 months, and a service life of 55.5 years. The mine has geological reserves of 339 million tons and designed recoverable reserves of 140 million tons. The main mining coal seam is Er1 coal. The inclination angle of the coal seam is generally 2° to 6°, and the average thickness is 6.16m. It is a nearly horizontal and stable thick coal seam. The coal quality is medium ash, low sulfur, high calorific value, high ash melting point, and lump coal. High-quality anthracite coal with high yield, calorific value can reach 30.03MJ/kg. The mine officially started construction on January 9, 2007, and was officially completed and put into production on April 23, 2011. After full production, it can achieve annual sales revenue of 1.6 billion yuan and profits and taxes of 600 million yuan. Zhaogu Second Mine is designed and constructed in accordance with modern mine standards. Comprehensive mechanized mining technology is fully applied, and advanced domestic and foreign equipment are widely used in mine hoisting, transportation, communication and safety monitoring systems. Among them, the main and auxiliary shaft braking systems adopt ABB constant deceleration hydraulic braking system, which is internationally leading in technology; the main shaft electronic control system adopts ABB's ACS6000 AC/DC frequency conversion control system, and the control method is DTC direct torque control. This set of equipment is currently the first AC-AC AC variable-frequency hoist in Henan Coal Chemical Group; the underground main transport belt is 1.4 meters wide, which is the widest transport belt in Henan Coal Chemical Group. The coal preparation plant is equipped with the largest domestic Y-27 jig in Henan Province and the most advanced pressure filter in the country. Since the construction of the Zhaogu No. 2 Mine project started, with the care and support of governments and leaders at all levels, the builders have adhered to the core values ??of Henan Coal Chemical Group’s “working with heart and pursuing excellence”, carried forward the “especially capable of fighting” spirit of Jiaozuo coal miners, and fought hard. Fighting severe cold and scorching heat, we scrambled for deadlines and progress, solved one problem after another, and created one miracle after another: the main shaft's main inclined frame and the auxiliary inclined frame were successfully connected in only 19 days, setting a new national construction speed record for similar projects; The construction speed of the outer shaft wall of the frozen section of the auxiliary shaft has exceeded 100 meters for five consecutive months, setting a new national record for similar mine construction in a comprehensive well of 81.4 meters/month; the coal preparation plant broke ground on October 22, 2009, and in 2010 A single machine was put into trial operation on June 30, 2018, and a modern coal preparation plant was built in 8 months, setting a new national record for the construction speed of similar large-scale coal preparation plants with permanent reinforced concrete structures. During the entire project construction process, Zhaogu No. 2 Mine produced 166 innovations and rationalization suggestions, carried out scientific and technological research and won 22 various scientific and technological progress awards. Among them, the "multi-point rapid grouting device between frozen shaft walls" won the national utility model patent certificate; "composite shaft wall rapid grouting technology" and "deep frozen shaft wall high-strength and high-performance concrete" won the national invention patent certificate; " "Research and Application of Comprehensive Technology for Economic and Rapid Construction of Deep Well Freezing" won the first prize of China Coal Industry Science and Technology Award. The successful application of scientific research results effectively solved the problems that affected the construction progress. In view of the reality of Zhaogu No. 2 Mine’s deep mine, high mine pressure, and easy deformation of tunnels, a new composite support technology of “anchor net (cable) spraying + U-shaped steel + anchor injection” was successfully explored, which not only accelerated the construction speed, but also saved a lot of money. Support costs. During the excavation construction of the 11011 first mining face, a new record of a single coal tunnel excavation in a single month was set at a maximum of 608 meters, and the average monthly footage exceeded 400 meters. The tide is flat, the banks are wide, the wind is blowing and the sail is hanging. All the cadres and employees of Zhaogu No. 2 Mine are deeply practicing the corporate core values ??of "working hard and pursuing excellence" to build Zhaogu No. 2 Mine into the most advanced enterprise of Henan Coal Chemical Group that integrates mechanization, automation and informatization. We strive to achieve high productivity, high efficiency, and first-class modern mines.