Supporting design and optimization of large section roadway with straight wall and semicircle arch

The most dominant and important minerals in Russia's far east are oil and gas, gold and silver and non-ferrous metals.The remaining oil and gas reserves in the far east are 6.4 billion tons, and the amount of resources is predicted to be 18 billion tons.The prospective resources of oil and gas are mainly distributed in the southwest and west of the Saha republic, the north Sakhalin area, the north Okhotsk sea and the west Kamchatka region.The oil and gas development is relatively high in the southwest of the Saha republic and the north Sakhalin area, and the oil and gas infrastructure is better.The gold, silver, tungsten, copper and tin ore reserves in the far east are the first in Russia.Affected by the infrastructure, the exploitation and utilization of gold and silver ores in the far east are mainly distributed in magadan, Chukchi autonomous prefecture, Khabarovsk border and Amur region.In addition, they are also concentrated in the eastern part of the republic of Saha.The far eastern region of tin and tungsten mining mainly concentrated in the coastal frontier areas, but the copper mines are barely mined.The prospective resources of tin are mainly distributed in the republic of Saha and Haba.The prospective resources of tungsten are mainly distributed in Binhai frontier area and Amur region.The prospective resources of copper are mainly distributed in the Chukchi autonomous region, Magadan state and the border area of Kamchatka.Overall, the reserves and potential of the far east are huge, but the level of exploitation is still low.Although there are disadvantages such as poor infrastructure and shortage of talents, it still has great development and utilization value.It is suggested that relevant enterprises in our country should actively participate in their infrastructure construction, or consider investing in mineral resources when the development conditions are ripe.