Liaoning University

Beijing Chengtian Hengye Coal Mine Equipment Co. Ltd

Petrochina Company Limited

Liaoning Technical University

Cnpc East China Design Institute

Hongying Wang

Yishan Pan

Jun Zhu

Xiaobo Liu

Kun Yu

Lianpeng Dai

Aiwen Wang

Xuehua Li

Yonghui Xiao

Zibin Huang

Zhi Tang

Yu Long

Zhigao Zhang

Hongqi Shi

Zhenyuan Wang

Zhenmin Cheng

Zhicai Chen

Shengshan Li

Guoqi Wang

The present invention discloses a self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and a using method thereof. The anchor cable includes a steel strand (), with an energy-absorbing and yielding terminal () and a stressed expansion-cracking terminal () respectively fixed to two ends of the steel strand, a bushing () sleeved outside the steel strand, a first lock () provided at one end of the steel strand and a second lock () provided at the other end of the steel strand; the stressed expansion-cracking terminal includes a self-anchored bushing () with a plurality of pre-splitting lines () arranged in the wall of the self-anchored bushing. Under stress, the wall of the self-anchored bushing cracks along the pre-splitting lines and bends and expands, so that it abuts against and is self-anchored to the edge of a sectional coal pillar at the outer side.

Self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and using method thereof

A hydraulic support unit and a hydraulic support for anti-rock burst roadway. The hydraulic support unit includes a base, a top beam, and a hydraulic support column, the top beam is positioned above the base in a spaced manner; the hydraulic support column are disposed between the base and the top beam; a side guard plate and a first base hydraulic cylinder are disposed on the left side and right side of the base, the side guard plates are rotably connected to the base, the two ends of the first base hydraulic cylinder are hinged to the base and the side guard plate respectively, the first base hydraulic cylinder can drive the side guard plate to transit between a horizontal state and a vertical state, and the bottom surfaces of the side guard plates are flush with the bottom surface of the base in the horizontal state.

Hydraulic support unit and hydraulic support for anti-rock burst roadway

A cool hydrogen-propelled cyclone quench box comprises: a mixing chamber () arranged at the center of a lower support plate (); swirl tubes () arranged above the lower support plate () and outside the mixing chamber (), the tubes being in tangential communication with the body of the mixing chamber () along a horizontal direction; a gas-liquid downcomer () perpendicularly arranged outside each swirl tube (), the bottom portions of the downcomers and the outer walls of the swirl tubes () being in tangential communication along a perpendicular direction, and the top portions of the gas-liquid downcomers () being connected to fluid inlets () arranged on an upper support plate (). The bottom end of a cool hydrogen branch pipe () is arranged outside each swirl tube (), and is tangentially connected to the swirl tube () along a horizontal direction. By means of a flange () arranged on the upper support plate (), the top ends of the cool hydrogen branch pipes () connect to a cool hydrogen pipe () arranged outside the upper support plate (). Upper-level cyclone blades () are installed within the mixing chamber (). The bottom ends of the blades () are perpendicularly arranged on the upper-level blade support plate (). Lower-level cyclone blades () are installed at the mixing chamber () outlet; the bottom ends of the blades () are perpendicularly arranged on the lower-level blade support plate ().

Cool hydrogen-propelled cyclone quench box

Growing community of inventors

Beijing, China

Hongying Wang