With the increasing depth of coal mining,more and more mines are facing high temperature damage. The drainage pipes in the shaft are affected by the change of temperature, and the force applied to the hosting beam increases exponentially. New challenges are presented for the supporting of hosting beam.The Xinzhuang coal miner has the following characteristics, as large shaft depth, high water temperature, large displacement. These characteristics leading to the greater force imposed on hosting beam. But freezing method is adopted during construction stage of auxiliary vertical shaft, no beam nest or back beam nest can be pre-reserved.In the paper, focus on the disadvantages of Xinzhuang coal miner, we propose an improved arrangement method of fixing hosting beam with anchor bracket. We first improve the strength of anchor bracket, and optimize its structure at the same time. We also propose the force calculation method of anchor bracket. We hope that our design has a certain reference for similar cases.

Taking Guojiatan mine industrial site as the case, the paper combining with the engineering condition and hydrogeological characteristics in the region, using the Low Impact Development (LID) concept design “sponge industrial”site of the drainage system, beneficial to reduce the risk of flooding by rainfall process in industrial site, beneficial to improve business efficiency and safety production, beneficial to improve the ecological environment and the humanities landscape. It has important implications for the construction, operation and sustainability of the project..

For the problem that fully mechanized caving face geting through collapse column is very difficult as a result of hard rock，coal mining machine cutting difficulty and great loss of pick seriously restrict the speed and productivity of face. In order to solve these problems by theory research and experimenting on worksite, the geological structure conditions of face and presplit blasting principle of rock are analyzed，so deep hole presplit blasting and construction requirements are put forward，by numerical simulation and experimenting on worksite to validate reasonable blasting parameters and achieve favourable blasting effect.The result of study indicates that the speed and efficiency of fully mechanized caving coal face are improved greatly，because drilling and blasting are operated in transportation channel and normal production work of caving coal face is not interfered by adopting deep hole presplit blasting.

The roof mining pressure monitoring was carried out to prevent and control of roof cut-off, gushing and sand-blasting in the thin-bedrock and water –rich areas of 22206 mining face in Halagou coal mine and to ensure safety mining in the initial mining stage. The results show that the roof was fully collapsed to form penetrating fissure and surface collapse and the pressure of weighting was obviously greater than the first weighting during the second weighting period, meanwhile, technical research on roof disaster prevention and control was carried out from the aspects of drainage water in advance, the construction surface hydrological observation hole, grouting reinforcement engineering, forced caving roof construction, optimization of mining drainage system and reserve emergency supplies. Hydrogeological protection, pressure prediction, engineering quality assurance and speed control of working face such as the four safety technical measures was proposed for the face to cross the thin-bedrock and water –rich areas.

Since the implementation of the coal mine production capacity policy, China has withdrawn 4.4 million tons of coal production capacity, a large number of coal mining enterprises are facing the transformation, the " PostCoalMine era " is coming. From the concept of " PostCoalMine era ", the article combs the current situation of the transformation of the current shut - off mine, and points out that the PostCoalMine era will going through three stages. The author proposed the stage of "Active Use of PostCoalMine era " point of view. This article lists the types of space in underground coal mine, summarized the design idea of development of underground space, The article points out the key directions for the planning and design of the related industries, and also provides a reference for the transformation of the mine.

Shaft sinking by freezing method of shaft lining in our country has reached more than 1100, engineering quantity, and get the relatively rich practical experience. The freezing method construction of inclined shaft is only more than 30, an engineering example, lack of construction experience, the technology research of inclined shaft freezing is less.In recent years, because of slope development is simple in equipment, such as large transport capacity advantages, is widely applied in the western region in China. Due to the geological conditions, using the freezing method construction of inclined shaft is becoming more and more pressing for construction of inclined shaft freezing study and discusses the basic theory, this paper takes Pang Pang freezing engineering for the model of inclined well of the tower is different depth (pressure), frozen wall thickness, different intensity of frozen wall and the numerical calculation between the deformation of borehole wall, explore the relationship between the variables and the size of the impact, to provide guidance for slope design and construction of freezing,.The basic research of inclined shaft freezing scheme comparison and optimum design, saving energy and reducing consumption has important reference value.

In order to investigate the goafs distribution in Linfen mining area, based on comprehensive detection application practices, the types classification were analyzed and surface survey were carried out. Then the comprehensive geological detection methods were proposed combined Time domain electromagnetic method, Controlled-source audio magnetotellurics method with 3D seismic method. The results showed that Linfen mining area belongs to Hedong, Huoxi and Qinshui Coalfield of China. In 42 coal mines, the longwall mining goafs distribution were clearly while such shotwall mining goafs as room and pillar method goas distribution were unknown and the roofs were partly caved or no-caved. The goafs of Linfen mining area were usually located in coalseam2 and coalseam 3, and they were continuous, multi-layers, nearly horizontal or slowly inclined, shallow or mid-deep buried, and large- scale area; through surface survey, there were 142 closed shafts or small kilns, 333 reservoirs, 207 springs, 158 surface cracks or subsidence. The comprehensive geophysical detection application practices and case analysis showed reliable results and good affect.

Taking China's promotion of high-quality economic development as the background, starting from the “three major challenges” priority is to prevent and resolve major risks, and to explore the tactics of promoting the high-quality development of coal enterprises with comprehensive risk management. With reference to the comprehensive risk management framework at home and abroad, a comprehensive risk management framework for coal companies is constructed, including macroeconomic risks, market risks, and environmental risks. The micro dimensions include strategic risks, safety production risks, financial risks, and marketing risks. The authors Identify risk sources separately for the above risk issues and provide corresponding risk management and control tactics.