-
公开(公告)号：US20200378258A1
公开(公告)日：2020-12-03
申请号：US16609738
申请日：2019-01-25
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wenping LI , Weichi CHEN , Zhi YANG , Qiqing WANG , Kaifang FAN
Abstract: A method for classifying a phreatic leakage disaster level in shallow coal seam mining includes the following steps: S1. arranging a monitoring hole in a coal mine working face and burying a telemetering water level gauge to perform water level monitoring; S2. monitoring a ground elevation, calculating a ground subsidence amount, and collecting drilling footage information; S3. plotting variation relationship curves of drilling footage and phreatic water level as well as drilling footage and ground subsidence according to monitored information, respectively; and S4. comparing the curves with a no-leakage graph, a slight-leakage graph, and a heavy-leakage graph, and determining a leakage level; and S5. further classifying a studied area as an environmental disaster area or an environmentally friendly area.
-
公开(公告)号：US20200370433A1
公开(公告)日：2020-11-26
申请号：US16630462
申请日：2019-01-25
Applicant: China University of Mining and Technology
Inventor： Wenping LI , Kaifang FAN , Qiqing WANG , Xiaoqin LI , Dongliang ZHAO
Abstract: The present invention relates to the field of prevention of a water disaster in coal mining, and discloses a risk evaluation method of an overburden bed-separation water disaster in a mining area. In the prior art, prevention of the bed-separation water disaster is achieved mainly by making bed-separation water “cut-off holes” and “diversion holes” underground; however, the degree of a roof bed-separation water disaster in the mining area has not yet been qualitatively or quantitatively evaluated and analyzed, resulting in blindness of the prevention of the bed-separation water disaster. In order to solve this problem, the present invention provides a risk evaluation method of an overburden bed-separation water disaster in a mining area, which includes the following steps: S1. collecting geological information about strata in the mining area; S2. calculating the height of a water-conducting fissure zone in the mining area; S3. based on a composite beam principle, determining a bed separation development position in strata above the water-conducting fissure zone; and S4. calculating a bed-separation water inrush coefficient, and zoning the mining area based on a risk of an overburden bed-separation water disaster. The present invention can predict and evaluate a risk of an overburden bed-separation water disaster in the mining area in advance, thus providing a scientific basis for designing a scheme to prevent the bed-separation water disaster, and guaranteeing coal mining safety.
-
3.发明申请公开(公告)号：US20200234170A1
公开(公告)日：2020-07-23
申请号：US16639138
申请日：2019-01-25
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wenping LI , Zhi YANG , Qiqing WANG , Wei QIAO , Xiaoqin LI
Abstract: A method for classifying eco-geological environment types based on coal resource exploitation solves the problem in the prior art of a lack of combined consideration of different geological and ecological environments on the surface in a to-be-mined area before coal mining. Based on surveys of ecological, hydrological, and geological information of the area, and by means of a Fuzzy Delphi Analytic Hierarchy Process (FDAHP) and weighted fuzzy C-means clustering, the present invention determines different eco-geological environment types. According to the existing ecological, hydrological, and geological information, the present invention can rapidly and effectively classify the different eco-geological environment types, and further determine eco-geological features and their sensitivity to coal resource exploitation.
-
公开(公告)号：US20220290563A1
公开(公告)日：2022-09-15
申请号：US17411061
申请日：2021-08-25
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Wenping LI , Weichi CHEN , Qiqing WANG , Jianghui HE , Wei QIAO , Liangning LI , Yuru YANG
Abstract: A monitoring device and a monitoring method for dynamic development of an overburden mining separated bed are provided. The monitoring device includes a settlement magnetic ring assembly and a mounting conduit. The settlement magnetic ring assembly includes an anchor strap assembly, a magnetic induction iron ring and a magnetic ring sleeve sleeved outside the magnetic induction iron ring. The anchor strap assembly is arranged at the outer circumference of the magnetic ring sleeve and has a contraction state and an expansion state. The anchor strap assembly in the contraction state can move in a monitoring hole, and at least two fixing points at different heights are formed in the anchor strap assembly in the expansion state and the wall of the monitoring hole in a vertical direction. Two ends of the mounting conduit are connected to a drill rod and the magnetic ring sleeve respectively.
-
-
-
Search Results
4
records
(took 0.014 seconds)
