Bing Liu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Bing Liu has a total of 10 co-authors. Here are the top co-authors by number of shared publications:
Chundi Feng
School of Resources and Safety Engineering Central South University Changsha China
1 shared publication- Diyuan Li
School of Resources and Safety Engineering, Central South University, Changsha, China
1 shared publication Lei Wen
School of Resources and Safety Engineering Central South University Changsha China
1 shared publication- Longjun Dong
School of Resources and Safety Engineering, Central South University, Changsha 410083, China
1 shared publication Ming Lan
School of Resources and Safety Engineering Central South University Changsha China
1 shared publication- Xibing Li
School of Resources and Safety Engineering, Central South University, Changsha 410083, China
1 shared publication
Latest Publications
- Open Access
- 10 April 2019
- Published by Wiley in Energy Science & Engineering
- Vol. 7 (4) , 1154-1165
Research and application of Boolean operation for triangular mesh model of underground space engineering—Boolean operation for triangular mesh model
This study is aiming at the problems of slow collision detection speed of bounding box, low efficiency of triangle intersection detection, and triangulation in regions where complex intersecting lines are segmented that exist in Boolean operation of triangular mesh model in underground space engineering. The orientation calculation method of underground space engineering is put forward, and the precise definition of bounding box is realized. A simple method to realize the fast intersection detection algorithm between triangles is presented, the process of transforming the projection of intersecting lines into scalar and then judging is eliminated, and the efficiency of triangle intersection detection is improved. On the basis of Delaunay triangulation robust algorithm, numbering method of intersection position is improved. Central axis region division method and hierarchical subdivision triangulation method are proposed, which can divide all the regions of mixed complex intersections in one traversal. A subdivision triangulation method by comparing the cosine value of internal tension angle is proposed, and the subdivision triangulation of polygon is optimized. The feasibility of the algorithm is verified by practical engineering application.
- 10 April 2019
- Published by Wiley in Energy Science & Engineering
- Vol. 7 (4) , 1154-1165
Open AccessResearch and application of Boolean operation for triangular mesh model of underground space engineering—Boolean operation for triangular mesh model
This study is aiming at the problems of slow collision detection speed of bounding box, low efficiency of triangle intersection detection, and triangulation in regions where complex intersecting lines are segmented that exist in Boolean operation of triangular mesh model in underground space engineering. The orientation calculation method of underground space engineering is put forward, and the precise definition of bounding box is realized. A simple method to realize the fast intersection detection algorithm between triangles is presented, the process of transforming the projection of intersecting lines into scalar and then judging is eliminated, and the efficiency of triangle intersection detection is improved. On the basis of Delaunay triangulation robust algorithm, numbering method of intersection position is improved. Central axis region division method and hierarchical subdivision triangulation method are proposed, which can divide all the regions of mixed complex intersections in one traversal. A subdivision triangulation method by comparing the cosine value of internal tension angle is proposed, and the subdivision triangulation of polygon is optimized. The feasibility of the algorithm is verified by practical engineering application.
- Open Access
Experimental Study on Backfilling Mine Goafs with Chemical Waste Phosphogypsum
To explore the feasibility of cemented paste backfill with phosphogypsum (PG), bleeding water and rheological tests (slump and on-site pipeline loop tests) were performed with PG backfill slurry (PGBS). In the bleeding water test, the PGBS concentration with minimal bleeding water was measured between 60.87 and 67.61%; in the rheological slump test, values of 61 to 68% were determined for the on-site pipeline loop test. The rheological pipeline loop test demonstrated that the resistance coefficient is lowest when the concentration is no higher than 65%. Through industrial experiments, PG slurry with a concentration of 64%–65% backfill was successfully applied to the goaf. The experimental results demonstrate that PGBS with characteristics of “less bleeding water” and “improved pumpability” is obtained when its concentration is between 61 and 65%. Paste-like PG slurry was proven to be optimal for cemented PG backfilling technology.
Open AccessExperimental Study on Backfilling Mine Goafs with Chemical Waste Phosphogypsum
To explore the feasibility of cemented paste backfill with phosphogypsum (PG), bleeding water and rheological tests (slump and on-site pipeline loop tests) were performed with PG backfill slurry (PGBS). In the bleeding water test, the PGBS concentration with minimal bleeding water was measured between 60.87 and 67.61%; in the rheological slump test, values of 61 to 68% were determined for the on-site pipeline loop test. The rheological pipeline loop test demonstrated that the resistance coefficient is lowest when the concentration is no higher than 65%. Through industrial experiments, PG slurry with a concentration of 64%–65% backfill was successfully applied to the goaf. The experimental results demonstrate that PGBS with characteristics of “less bleeding water” and “improved pumpability” is obtained when its concentration is between 61 and 65%. Paste-like PG slurry was proven to be optimal for cemented PG backfilling technology.