Engineering Analysis of Ground Grouting Controlling Shaft Fr…

1 Ground grouting reinforcement wellbore mechanism The vertical additional force hypothesis of shaft rupture suggests that the special aquifer is hydrophobic due to mining and other activities, causing the water level to drop, the effective stress of the soil layer to increase, the consolidation an ...read more...

Basic application of ip broadcast intercom terminal

1. Which electronic map is supported 2. How to use fire alarm Answer: The company has its own fire alarm matrix. A single device can be linked to 32 network terminals. 3. How to use the terminal on different network segments 6000 terminals. 4. What are our terminal devices? Intercom class: I ...read more...

LED lighting fixtures that are easy to increase sales in sto…

Since entering the LED lighting industry, whether it is walking on the street or walking in the mall. I especially like to look around and see what kind of LED lighting is used in the street shops. Especially when shopping in large shopping malls, everyone can often see LED track lights. I found t ...read more...

Mining, the number of ore samples during the beneficiation e…

The number of mineral samples can generally be determined by the following conditions: 1. A large number of ore samples are generally taken from the pre-exploitation section of the deposit, and a small number of verified ore samples should be taken for the later stage of mining. When the ore reser ...read more...

Dongfeng Motor Transfers 80% of Real Estate Company's Sh…

At the beginning of December, news of FAW, Dongfeng and Chang’an signing the strategic cooperation framework agreement once again brought the three automobile central enterprises to the people's attention. Compared to Changan and FAW, which are frequent actions this year, Dongfeng seems ...read more...

· Zheng coal machine took the lead in acquiring Bosch Elect…

Zhengzhou Coal Mining Machinery (00564.HK) announced that it intends to unite Chizhou Zhongan China Merchants Equity Investment Partnership (Limited Partnership) and China Renaissance Capital Investment Inc. SMG Acquisition Luxembourg Holdings S controlled by a public company. à rl. New Neckar A ...read more...