Roof-Breaking Characteristics and Ground Pressure Behavior in Deep Jurassic Coal Seams: A Thick-Plate Model and Field Measurements

Table 2

Judgment criteria for periodic weighting in some hydraulic supports.

No.
#4	7635	680	8315	8794	663	9457
#15	8537	534	9071	9502	508	10010
#30	8999	520	9519	9810	573	10383
#46	8905	434	9339	9731	473	10204
#60	8957	475	9432	9873	633	10506
#83	8840	379	9219	9729	448	10177
#92	8552	708	9260	9547	486	10033
#98	8893	363	9256	9695	365	10060
#113	8844	436	9280	9676	505	10181
#128	8595	591	9186	9516	442	9958
#136	9259	667	9926	10245	783	11028
#150	8664	561	9225	9614	590	10204
#166	7590	543	8133	8652	687	9339
#174	7419	830	8249	8169	690	8859

: mean value of CTR; : standard deviation of CTR; : JCCTR.