Bceg Environmental Remediation Co., Ltd

Other

China University of Mining and Technology

Xuzhou Hongyi Technology Development Co., Ltd.

Hangzhou Geomantle Fenergy Hydrogen Tech. Co., Ltd.

Qiang Niu

Yue Hua Zhang

Yang Wang

Xiaowei Song

Fan Chen

Shupeng Li

Lili Guo

Yuewei Yang

Pengcheng Yin

Peng Liu

Fuwang Wang

Jianliang Zhang

Anye Cao

Min Li

Shuangchao Cui

Yaoqi Liu

Siyuan Gong

Linming Dou

Wu Cai

Zhancheng Guo

Xu Yang

Changbin Wang

Hongbiao Dong

Pengpeng Chen

Qing Ge

Zhifeng Ma

Fanyang Bu

Xiaobin Zhang

Guohua Yu

Jianming Pang

Tianjun Yang

Zhongqiu Wang

Shixiong Xia

An online stress monitoring system is used to obtain a stress distribution of each position, a geophone monitoring system is used to monitor high-frequency vibration signals produced by coal and rock fracture, a support resistance monitoring system is used to monitor working resistance of hydraulic supports in a working face, a well-ground joint microseismic system is used to monitor low-frequency vibration signals produced by the coal and rock fracture, and realize position of a microseismic source and inversion imaging of mining fractures, and an anchor stress monitoring system is used to monitor stress states of anchor bolts and cables. A data processing center is used to comprehensively process data obtained from the above five systems using an early warning model, thereby to obtain a prediction result of rock burst and determine whether to make early warning, thus workers can take timely measures according to the early warning situation.

Intelligent monitoring and early warning device and method for rock burst based on multi-field and multi-source information fusion

A gasifier for organic solid waste by injection into molten iron and slag bath includes a gasification furnace, a liquid level adjusting furnace and a slag discharge and heat exchange shaft furnace. The liquid level adjusting furnace, in communication with the bottom of the gasification furnace, contains 1200-1700&#xb0; C. molten iron-based alloy liquid, which is covered with molten liquid slag layer. When gas pressure above or liquid volume in the liquid level adjusting furnace increases, liquid level of the molten liquid in the gasification furnace rises simultaneously. A particle material injection lance is immersed, through which organic particles to be gasified are blown into molten bath, and oxygen gas or oxygen-enriched air as gasifying agent is blown into the melt at the same time. Organic substance is gasified into CO-rich and H-rich syngas, and most of inorganic substance enters molten slag and is discharged termly.

Gasifier for organic solid waste by injection into molten iron and slag bath

An in-situ injection of soil and groundwater&#x2014;high pressure rotary jet grouting in-situ remediation system and method. The system has an agent dispensing station, high pressure grouting pump, air compressor, rotary jet grouting drilling machine, second double-pipe water flow joint, automatic lifting mechanism for grouting drill pipe of rotary jet grouting drilling machine, high pressure jet drill pipe, inner tube for high pressure jet triple drill pipe, outer tube for high pressure jet triple drill pipe, agent jet nozzle, an air jet nozzle, cemented carbide block and a drill bit. Parameters are arranged according to the triangle method to ensure that the remediation area is covered within the diffusion radius of the agent. After positioning the GPS measuring point, a guided-boring rig is positioned at the center of the injection point. The high pressure injection remediation uses a double-pipe: using gas and liquid fluids to spread the soil while cutting the soil from bottom to top to achieve thorough mixing of the remediation agent with soil and groundwater; quickly combining laboratory testing to obtain parameters for remediation agent residues, pH values, and contaminant concentrations to verify the in-situ remediation effect and monitor the residual agent.

In-situ injection of soil and groundwater&#x2014;high pressure rotary jet grouting in-situ remediation system and method

A method for determining the diffusion radius of in-situ injection and remediation of contaminated soil and groundwater. According to the triangle method, the hole spacing is perpendicular to the groundwater flow direction, the row spacing is along the groundwater flow direction, and the flow diffusion in the groundwater during the effective time of the remediation agent reaction is considered. Under high pressure rotary injection, the remediation agent and a certain proportion of bromide ions are simultaneously injected into the aquifer as a tracer. The diffusion of the agent is determined by observing the phenomenon of slurry-returning and slurry-channeling of adjacent injection points. After the completion of the injection, the groundwater is quickly sampled in fixed depth, the tracer concentration is quickly detected on site, and the concentration of bromide ions in the groundwater is compared with the background value. Comprehensive determination determines the optimal diffusion radius.

Method for determining diffusion radius of in-situ injection and remediation of contaminated soil and groundwater

An in-situ chemical oxidation high pressure injection optimization remediation method for soil and groundwater. A field test determines the diffusion radius of the injection agent in a typical formation, the maximum single-hole grouting amount per linear meter and the injectability parameter. Density-increased supplementary investigation, soil and groundwater data analysis, is divided by spatial distribution into four concentration main partitions, eight concentration sub-partitions. By optimizing the single-hole grouting amount per linear meter, the preparation concentration of the oxidant, and the parameters of the formulation of each partition, the optimization of the dosing ratio of remediation agent of each partition is achieved. The specific construction performance is to adjust the lifting speed of the high pressure injection drill pipe during the injection process for finally achieve the purpose of reducing the dosing ratio parameters of the agent in the remediation plot.

In-situ chemical oxidation high pressure injection optimization remediation method for soil and groundwater

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Beijing, China

Qiang Niu