Bidding for belt conveyor in Xutuan mine of Huaibei Mining Group

In the aspect of Shaft Construction: the central air shaft and chamber project of Liuzhuang Coal Mine of Huainan Xinji group, which was constructed in 2003, has a diameter of 6.5 meters, a depth of 802 meters and a freezing depth of 343 meters. It was completed in March 2004, with an average completion of 97 meters per month. In the freezing section, with a monthly completion of 150.2 meters, it has set a new record for permafrost shaft sinking in Huainan and Huainan areas; In the bedrock section, the well was completed 150.2 meters per month, setting a new record for the construction of the bedrock section of the vertical shaft in East China. The project was also rated as the "Sun Cup" project by China Coal Construction Association. The main shaft and chamber project of Wobei coal mine of Huaibei mining Group was constructed in February 2004. The shaft diameter is 5m, the depth is 687.9m, and the freezing depth is 516m. It was completed in October 2004. The maximum monthly completion is 130m, and the average monthly completion is 96m; The main shaft and chamber project of Dingji Coal Mine of Huainan Mining Group was constructed in July 2004. The shaft diameter is 7.5m, the excavation depth is 851.8m, and the freezing depth is 567m. In the excavation and construction of the outer wall of the freezing section, many complex conditions such as the gravel layer and the extra thick clay layer are overcome. The construction has exceeded 100m for three consecutive months, and the average monthly well completion is 95m, The project was also awarded the "Sun Cup" project by China Coal Construction Association. The air shaft and chamber project of Suntuan coal mine of Huaibei Mining Group was undertaken at the end of 2004. The diameter of the shaft is 6 meters, the excavation depth is 572 meters, the freezing depth is 263 meters, and the maximum monthly completion is 165 meters, with an average monthly advance of 95.8 meters; The Xifeng shaft project of Liuzhuang Coal Mine in Xinji, Huainan, which was undertaken in early 2005, has a diameter of 6 meters, a excavation depth of 802 meters, a freezing depth of 405 meters, and an average monthly advance of 100 meters. In September 2005, a new record of 162.8 meters was set in the construction of bedrock section in Lianghuai mining area; The main shaft project of Guotun mine of Luneng Heze coal and power company was constructed in October 2005. The excavation depth is 870 meters, the freezing depth is 702 meters, and the topsoil thickness is 586 meters. The geological conditions are complex. In the topsoil freezing section, the well has been completed for more than 100 meters for four consecutive months, and the monthly average footage is 118 meters; At the end of 2005, the air shaft and chamber project of Liudian coal mine of Huaibei Mining Group was constructed. The excavation depth was 662.8 meters and the freezing depth was 510 meters. In January 2006, the excavation depth of the outer wall was 170 meters, which set the highest footage record in the surface soil section of freezing shaft sinking in Lianghuai coal mine
the auxiliary shaft project of Gaohe coal mine of Lu'an Mining Group was constructed in June 2006. The net diameter of the shaft is 8.2 meters, which is the largest cross-section shaft in China. The excavation depth is 498.5 meters, and the freezing depth is 245 meters. In September 2006, a record of 121 meters was set in the bedrock section of Lu'an mining area; In October 2006, the new auxiliary shaft project of Taoyuan Coal Mine of Huaibei Mining Group, the deepest shaft in Northern Anhui, was constructed. The shaft diameter was 6.5 meters, the freezing depth was 332 meters, and the excavation and construction depth was 855 meters. In November 2006, the excavation and construction of the outer wall was 171 meters, setting the highest footage record of the surface soil section of freezing shaft sinking in Anhui Province; In March 2007, the air intake shaft project of Gaohe coal mine of Lu'an Mining Group was constructed, with a depth of 484.5 meters and a net diameter of 7.5 meters. The difficulty of rock hardness was overcome in the construction of bedrock section. In August 2007, the shaft footage was 138 meters, which broke the record of Lu'an mining area and was praised and awarded by Lu'an Mining Group Company; The auxiliary shaft project of Kouzidong coal mine of SDIC Xinji group is 1032m deep, 617m frozen depth, 8m net diameter and 12m waste diameter. New technology and mechanized operation line are fully adopted. In August 2007, the shaft footage of 165.7m was achieved in the topsoil section, which is the first record of vertical shaft construction with the same diameter in East China; In August 2008, the shaft construction broke the 100 meter mark again, and achieved a remarkable achievement of 100.8 meters of rapid excavation and construction in the bedrock section of the shaft below 800 meters. In the middle of November, the shaft engineering was completed safely and smoothly; The air shaft project of Tiebei mine of ZALAINUOER Coal Instry Co., Ltd. was constructed in May 2008. The geological conditions are complex. In July 2008, the remarkable achievement of 181.8 meters per month was achieved, which was highly praised by Huaneng Group. The return air shaft project of hujiahe coal mine of Shaanxi Binchang hujiahe Mining Co., Ltd. is under construction. The shaft depth is 540 meters and the shaft diameter is 7 meters. The whole shaft depth freezing method is adopted for construction, and the advanced science and technology are fully adopted. In October and November 2008, the shaft footage is 120 meters and 121 meters respectively, setting the highest record for shaft construction in Binchang mining area, which has been highly appraised by all walks of life. The auxiliary shaft project of Liangbaosi coal mine of Shandong Feicheng Mining Group, which has won the bid, has a depth of 1092 meters, a diameter of 6.5 meters, a freezing depth of 536 meters and a topsoil thickness of 464 meters
in the construction of horizontal inclined roadway: in August 2004, ring the track downhill construction in 82 mining area of Xutuan coal mine in Huaibei, the monthly footage was 206 meters; The average monthly footage of belt conveyor tunnel 1 in Bailongshan coal mine, Yunnan Province, completed in August 2005, is 193 meters, among which the highest mining record of 236 meters was set in March 2005; In 2005, Huangling No.2 coal mine auxiliary inclined shaft project was constructed, with a total length of 2010 meters, a net cross section of 18.9 m2, and an average monthly footage of 152 meters. In March 2005, it achieved a good result of 218 meters. This project was also rated as the "Sun Cup" project by China Coal Construction Association. In 2005, Xutuan coal mine in Huaibei, constructed by our department, achieved good results of 320m, 350m and 365m continuously from April to June in the mechanized operation construction of track chute in mining area