Chairman's speech:

Xuzhou Cumt Backfill Technology Co., Ltd. has always been committed to the research, development, promotion and application of solid waste paste filling mining technology and equipment, so as to solve mining subsidence, protect the ecological environment of mining area, improve resource recovery rate, and promote green mining and sustainable development of mines in China, especially coal mines.

After more than ten years of joint efforts with coal enterprise partners, beckfill has created a complete set of equipment and technology for comprehensive mechanized coal mining with ordinary paste filling, and created high recovery paste filling mining with no relocation of coal under buildings and structures, paste filling recovery caving mining with strip coal pillar, all paste filling mining with pressure and no coal pillar above confined water The successful application precedent of typical "three down" (under buildings, under railways, under water bodies and above confined water) coal pressing conditions such as increasing the mining upper limit of paste filling under the Quaternary bottom strong aquifer. Paste filling coal mining has been listed as one of the green mining technologies vigorously promoted by the state. The state has given preferential policy support to halve the collection of resource tax for the coal resources extracted by paste filling since 2016.

China's "three down" coal pressure is as high as tens of billions of tons, and only a small part is liberated by filling mining. Green filling mining based on paste filling is a great cause to support the sustainable development of China's coal and other mining industries. It has a broad market and a long way to go.

In the next decade, backfill will adhere to the mission of creating a world-class green mining technology of "safety, efficiency, high recovery rate and environmental coordination", continue to adhere to the enterprise spirit of "innovation, cooperation and win-win", strive to develop a new generation of high-efficiency paste filling, comprehensive mechanized coal mining and other equipment and technologies, widely serve mining enterprises, and make new and important contributions to the green mining and sustainable development of mines in China and even the world, In this way, backfill will be built into a global and dynamic green mining engineering technology innovation and promotion center.

Chairman Zhou Huaqiang:

Professor and doctoral supervisor of mining engineering, a national key discipline of China University of mining and technology, founder, chief expert and chairman of Baker Fall Technology Co., Ltd. of Xuzhou China University of mining and technology, pioneer of solid waste paste filling coal mining technology, has been engaged in scientific research and teaching of mining engineering for more than 30 years, and its main research direction is rock stratum control and filling mining.

Mainly participated in and completed the series design of the first set of roadway metal support in China's coal mines, invented ZKD type high water quick setting material, put forward the theory of roadway support restriction and stability, invented SL and PL series paste cements, and presided over the completion of the first paste filling in China's coal mines to raise the upper limit of mining, the first fully mechanized paste filling in thick coal seams under buildings, no pillar mining The first industrial test projects, such as strip mining of residual coal pillars under paste filling and recovery buildings and paste filling mining under pressurized water buildings, have opened up a new direction of green mining of coal mine solid waste paste filling. Relevant achievements have won more than 10 provincial and ministerial scientific and technological progress awards, published 4 monographs, participated in compiling 1 Textbook and published more than 60 papers.

Some remarks:

"Solid waste paste filling does not move to the village for coal mining"

"Discussion on mining technology of paste filling in coal mine"

"Numerical Simulation Study on rock control of solid waste paste filling"

"Experimental Study on coal gangue gypsum filling material"

"Analysis on Influencing Factors of paste filling material strength"

"Preliminary experiment on mechanical properties of paste filling materials"

"Measurement error analysis of moisture and proportion of paste filling raw materials"

"Experimental Study on rheological properties of paste filling slurry"

"Research and application of high water filling materials"

Theory and application of roadway support restriction and stability